mm850272-01 unical mmx2

EUROTRON ITALIANA s.r.l.Viale F.lli Casiraghi 409/41320099 S.S.Giovanni (MI) - ItalyTel. +39-02 2488201 Fax +39-02 2440286

eurotron

UniCal MMX2Process Calibrator MultimeterInstruction Manual ed.01

_______________________________________________ ___________________________________________________Instruction Manual n. MM850272 ed. 01

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INTRODUCTORY NOTE

This manual has been with all the information you need to install, operate and maintain theCalibrator/DMM UniCal MMX2 and its accessories.

Eurotron has used the best care and efforts in preparing this book and believes the informationin this publication are accurate. The Eurotron products are subjected to continuousimprovement, in order to pursue the technological leadership; these improvements couldrequire changes to the information of this book.Eurotron reserves the right to change such information without notice.

No part of this document may be stored in a retrieval system, or transmitted in any form,electronic or mechanical, without prior written permission of Eurotron Italiana Srl.

UniCal MMX2 Calibrator/DMM uses sophisticated analogic and digital technologies. Anymaintenance operation must be carried out by qualified personnel ONLY. Eurotron suppliesinstructions and operative procedures for any operation on the instrument. We recommend tocontact our technicians for any support requirements.

UniCal MMX2 is fully tested in conformity with the directive n°89/336/CEE ElectromagneticCompatibility. Eurotron shall not be liable in any event, technical and publishing error oromissions, for any incidental and consequential damages, in connection with, or arising out ofthe use of this book.

All right reservedCopyright © 1998 EUROTRON Italiana S.r.l.

Viale Fratelli Casiraghi 409/41320099 Sesto San Giovanni (MI) – ItalyTel.: 02 248820.1 – Fax: 02 2440286e-mail: [email protected]


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INDEX

1 GENERAL PERFORMANCE ...................................................................................... 51.1 Instrument codes ................................................................................................................. 61.2 Specifications ...................................................................................................................... 71.2.1 Input Specifications ......................................................................................................... 81.2.2 Output Specifications .................................................................................................... 11

2 GENERAL FEATURES............................................................................................. 122.1 Flexibility ........................................................................................................................... 122.2 SELF-PROTECTIVE function............................................................................................. 122.3 Keyboard........................................................................................................................... 122.4 Display .............................................................................................................................. 122.5 I/O Terminals..................................................................................................................... 122.6 Digital interface.................................................................................................................. 122.7 Case ................................................................................................................................. 12

3 PHYSICAL DESCRIPTION....................................................................................... 13

4 FUNCTIONAL DESCRIPTION.................................................................................. 144.1 LCD display....................................................................................................................... 144.2 Rotary Switch .................................................................................................................... 164.3 Input and Output terminals................................................................................................. 17

5 UNPACKING ............................................................................................................ 18

6 PRE-OPERATIONAL CHECK .................................................................................. 19

7 OPERATIONS .......................................................................................................... 207.1 Push-Button operations...................................................................................................... 207.1.1 Output operations.......................................................................................................... 207.1.2 Input operations ............................................................................................................ 217.2 Quick start procedure......................................................................................................... 237.3 Selecting Power-on options................................................................................................ 237.4 Programming Output.......................................................................................................... 247.4.1 Scan output .................................................................................................................. 247.4.2 RAMP output ................................................................................................................ 267.4.3 Square wave output ...................................................................................................... 287.5 Special functions ............................................................................................................... 297.5.1 Dynamic recording ........................................................................................................ 307.5.2 Data hold / Refresh hold................................................................................................ 317.5.3 Relative (Zero) .............................................................................................................. 327.5.4 Auto Power-off and sleep mode..................................................................................... 327.5.5 Disable auto Power-off .................................................................................................. 337.5.6 Demonstrate display annunciators ................................................................................. 337.5.7 Backlit display for easy reading in the dark..................................................................... 337.5.8 Continuity function for Ohms measurement.................................................................... 347.5.9 Combination display...................................................................................................... 347.5.10 1 ms Peak Hold............................................................................................................. 35

8 COMMUNICATION................................................................................................... 37

9 APPLICATIONS ....................................................................................................... 389.1 AC Voltage measurement .................................................................................................. 389.2 DC Voltage measurement ................................................................................................. 399.3 mV measurement .............................................................................................................. 409.4 Resistance measurement................................................................................................... 418.5 Diode Check...................................................................................................................... 419.6 mA measurement ............................................................................................................. 419.7 Temperature measurement ................................................................................................ 42


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9.8 Simulate and measure frequency transmitter ...................................................................... 429.9 Trouble-shooting equipment............................................................................................... 439.10 Component test ................................................................................................................. 439.10.1 Zener diode test ............................................................................................................ 439.10.2 Transistor hfe test ......................................................................................................... 43

10 MAINTENANCE........................................................................................................ 4510.1 Safety Informations............................................................................................................ 4510.2 Service.............................................................................................................................. 4510.3 External battery replacement.............................................................................................. 4610.4 Inside battery replacement ................................................................................................. 4610.5 Fuse replacement .............................................................................................................. 4710.6 Cleaning............................................................................................................................ 47

11 CERTIFICATES........................................................................................................ 4811.1 Warranty terms.................................................................................................................. 48

APPENDIX ............................................................................................................................ 49A1 EMC Conformity ................................................................................................................ 50


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1 GENERAL PERFORMANCE

The UniCal MMX2 is a dual display CALIBRATOR / DMM. In the Calibrator mode, the white rotary switchlabels indicate the source function; The green labels indicate the measure function. Also the white pushbutton labels indicate output control functions. In the DMM mode, the white rotary switch labels indicatethe secondary measurement display while the green labels indicate the primary measurement display.

This device can be used not only for instrument system maintenance, butalso for maintaining and servicing industrial meters and for testingelectronic circuits and electronic equipment. Sensors can be measuredfor automotive or automatic control system. In addition to generating highaccuracy DC voltage and current sources, this device can also generate asquare wave with PWM features.

Main Features:§ Constant Voltage Source.§ Constant Current Source.§ Square Wave Generator with adjustable duty cycle and amplitude.§ Memory Generation Output§ Self-protective function§ DCV, ACV, DCA, ACA, Diode, Temperature, Frequency, Duty

cycle and Pulse width measurements.§ Back-lit display.§ Dynamic Recording.§ AC+DC True RMS measurement for non linear loads(both Voltage

and Current).§ Multi-display for easily analyzing components of signals.§ Computer Interface with PC. for recording only


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1.1 Instrument codes

cat. 3420 - A - B

Table A Accessories0 none1 RS232 Cable with Windows software2 1000Ω high impedance mA output adapter

Table B Report of Calibration0 none1 Calibration Certification


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1.2 Specifications

• Display:− Both primary and secondary display are 5 digits liquid crystal display (LCD) with maximum

reading of 4,000/40,000 adjustable.− Automatic polarity indication.

• Function:− DCV, ACV, DCA, ACA, OHM, Diode check, Audible continuity, Temperature, Frequency, Duty

cycle and Pulse Width tests.− Including AC+DC true RMS measurement for both voltage and current.− 1 ms peak hold for easy glitch capture.− High accuracy constant current and voltage output(Bipolar sink-source system).− Programming: User programmable 16 memories for each range,− Scanning Output for one cycle or continuous cycle process output− Ramp Output for linear process output− A unique square wave output with adjustable duty cycle, pulse width and amplitude.− Back-lit display for easy reading in the dark.

• Measuring rate:− 3 times per second for 4,000 counts.− 1 time per second for 40,000 counts.− 1 time per second for frequency measurement.− 0.25 ~4 times per second for Duty Cycle and Pulse Width measurements.

• Low battery indicator:

The " " appears when the battery voltage drops below 7.2V (approx.).

• Operating temperature:0°C to 40 °C, 0 - 80 % R.H.

• Storage temperature:-20°C to 60°C, 0 - 80 % R.H. with BATTERY REMOVED.

• Temperature coefficientINPUT: 0.15 * (specified accuracy) / °C (from 0°C to 18°C or 28°C to 40°C)OUTPUT: ±(50ppm rdg + 0.5dgt)/ °C

• Power supply:Single standard NEDA1604, JIS006P,IEC6F22 carbon-zinc or alkaline type 9V battery.For output operation, it is necessary for using external power adapter or battery box. This adapter musthave 12 Volts/300 mA capability.

• Dimension:37 (H) * 90 (W) * 192 (L) mm.

• Weight:1240 grams with standard accessories.

• Standard Accessories:Test leads (a pair), manual, 9V battery, protective holster, alligator clip(a pair), 12V battery withleather box.


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1.2.1 Input Specifications

Accuracy is given as ±( % of reading + no. of least significant digits) at +23°C ±5°C, with relative humidityLess than 80% R.H. In the 4 3/4 digit mode, multiply the number of least significant digits(dgt) by 10.

oo DC VOLTAGERange Resolution Accuracy Overload

Protection 40mV 10 µV/ 1µV ±(0.08%rdg+5dgt) 400mV 0.1mV/10µV ±(0.03%rdg+3dgt) for positive range,

±(0.06%rdg+3dgt) for bipolar range. 4V 1mV /0.1mV 300V 40V 10mV/1mV AC RMS 300V 0.1V/10mV ±(0.06%rdg+3dgt)• Input Impedance: 10MΩ (1000 MΩ for 40mV and 400mV)

oo AC VOLTAGE (TRUE RMS : From 5%% to 100%% of range. )Range Resolution Accuracy Overload

50/60Hz 45Hz ~ 5kHz 5kHz ~ 20kHz Protection 40mV 10µV/1µV 400mV 0.1mV/10µV 4V 1mV/0.1mV ±(0.7%rdg+5dgt) ±(1.5%rdg+5dgt) ±(2%rdg+5dgt) 300V 40V 10mV/1mV AC RMS 300V 0.1V/10mV 45Hz~1kHz

±(1.5%rdg+5dgt)NO SPEC.

• Input Impedance: 10MΩ // less than 100pF(1000MΩ for 40mV and 400mV). Crest factor<=3

oo AC+DC VOLTAGE (TRUE RMS : From 5%% to 100%% of range.)Range Resolution Accuracy Overload

50/60Hz 45Hz ~5k Hz 5kHz~20kHz Protection40mV 10µV/1µV400mV 0.1mV/10µV4V 1mV/0.1mV ±(0.8%rdg+10dgt) ±(1.6%rdg+10dgt) ±(2.1%rdg+10dgt) 300V40V 10mV/1mV AC RMS300V 0.1V/10mV 45Hz~1kHz

±(1.6%rdg+10dgt)• Input Impedance: 10MΩ // less than 100pF (1000MΩ for 40mV and 400mV). Crest factor <=3

oo DC CURRENTRange Resolution Accuracy Burden Voltage

and shuntOverload

Protection40 mA 10 µA/1µA ±(0.2%rdg+3dgt) 0.06 V (1Ω) 250V, 630mA400 mA 0.1 mA/10µA 0.6 V (1Ω) Quick acting fuse

oo AC CURRENT (TRUE RMS: From 5%% to 100%% of range.)Range Resolution Accuracy

45Hz ~ 2kHzBurden Voltage

and shuntOverload

Protection40 mA 10 µA/1µA ±(1.0%rdg+5dgt) 0.06 V (1Ω) 250V, 630mA400 mA 0.1 mA/10µA 0.6 V (1Ω) Quick acting fuse• Crest factor<=3


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oo AC+DC CURRENT (TRUE RMS: From 5%% to 100%% of range.)Range Resolution Accuracy

45Hz ~ 2kHzBurden Voltage

and shuntOverload

Protection40 mA 10 µA/1µA ±(1.2%rdg+10dgt) 0.06 V (1Ω) 250V, 630mA400 mA 0.1 mA/10µA 0.6 V (1Ω) Quick acting fuse• Crest factor<=3

oo 1 ms PEAK HOLDSpecified accuracy +/- 40 digits for changes > 1 ms in duration.

VOLTAGERange Resolution Accuracy Overload

Protection 40 mV 10 µV/ 1µV 400 mV 0.1mV/10µV 300V 4 V 1mV /0.1mV ±(2%rdg+43dgt) AC RMS 40 V 10mV/1mV 300 V 0.1V/10mV• Input Impedance: 10MΩ (1000MΩ for 40mV and 400mV)

CURRENTRange Resolution Accuracy Burden Voltage

and shuntOverload

Protection40 mA 10 µA/1µA ±(2%rdg+43dgt) 0.06 V (1Ω) 250V, 630mA400 mA 0.1 mA/10µA 0.6 V (1Ω) Quick acting fuse

oo RESISTANCERange Resolution Accuracy Maximum

Test VoltageOverloadProtection

400 Ω 0.1/0.01 Ω 3.3V4 kΩ 1/0.1 Ω40 kΩ 10/1 Ω ±(0.2%rdg+3dgt) 300V400 kΩ 100/10 Ω 1.28V AC RMS4 MΩ 1/0.1 kΩ40 MΩ 10/1 kΩ ±(1%rdg+5dgt)• Instant Continuity: Built-in buzzer sounds when resistance is less than 10.0Ω

oo DIODE CHECKRange Resolution Accuracy Test Current Test VoltageDiode 1 / 0.1 mV ±(1.0%rdg+2dgt) approx. 1.65mA <3.3V• Overload protection: 300 Vac RMS

oo AUDIBLE CONTINUITY TESTRange Resolution Accuracy Test Current Test Voltage

Diode 1 / 0.1 mVBuilt-in buzzer sounds whenreading is below approx. 100 mV approx. 1.65mA <3.3V

• Overload protection: 300 Vac RMS

oo K -TYPE TEMPERATURE TESTRANGE Resolution Accuracy Overload Protection-40°C ~ 1200°C 1/0.1°C ±(0.3%rdg+3°C) 300V AC RMS-40°F ~ 2192°F 1/0.1°F ±(0.3%rdg+6°F)

• The accuracy does not include the tolerance of thermocouple probe


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oo FREQUENCY for Voltage measurementRange Resolution Accuracy Min. Input Freq.100Hz 0.01/0.001Hz1kHz 0.1/ 0.01Hz10kHz 1/0.1Hz ±(0.02%rdg+1dgt) 1Hz100kHz 10/1 Hz200kHz 100/10Hz• Overload protection: 300Vrms AC

FREQUENCY SENSITIVITY AND TRIGGER LEVELINPUT RANGE MINIMUM SENSITIVITY

(RMS SINEWAVE)Trigger Level for DC coupling

(Maximum input for specifiedaccuracy = 10 x Range or 300V)

40 Hz-20 kHz 10 Hz-200 kHz < 20 kHz 20 kHz ~ 200 kHz

40 mV 10mV NO SPEC. 15mV No SPEC.400 mV 30mV 40mV 40mV 80 mV4V 0.3V 0.4V 0.4V 0.8V40V 3V 4V 4V 8V300V 30V 40V

(≤100 kHz)40V 80 V

(≤100 kHz) The accuracy for duty cycle and pulse width is based a 5V square wave input on the 4V dc range. DUTY CYCLE 0.01 to 99.9 % for DC coupling, 5% to 95% for AC coupling Accuracy: Within ± (0.3% per kHz + 0.3%) of full scale PULSE WIDTH 0.1 ms to 1999 ms Accuracy: ± (0.2%rdg +3dgt ), pulse width must be greater than 10µs. Pulse width range is determined by the frequency of the signal.


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1.2.2 Output Specifications

Accuracy is given as ±( % of reading + no. of least significant digits) at 23°C ± 5°C, with relative humidityLess than 80% R.H.

oo CONSTANT VOLTAGE OUTPUTGeneration Range Resolution Accuracy Maximum

output currentCV:1.5V0 to ± 1.5000V

0.1 mV ±(0.03%rdg+0.3mV) Approx. ± 25mA *Note 1.

CV:15V0 to ±15.000V

1 mV ±(0.03%rdg+3mV) Approx. ± 25mA

NOTE: LOADING COEFFICIENT: 0.012MV / MA FOR 1.5V OUTPUT. MAXIMUM INPUT VOLTAGE: 30 VDC

oo CONSTANT CURRENT OUTPUTGeneration Range Resolution Accuracy Maximum

burden voltageCC:25 mA0 to ± 25.000 mA

1 µA ±(0.03%rdg+5µA) Approx. ±12V *Note 1.

NOTE: LOADING (BURDEN VOLTAGE) COEFFICIENT: 1µµA / V. MAXIMUM INPUT VOLTAGE: 30 VDC

oo SQUARE WAVE OUTPUTOUTPUT Range Resolution AccuracyFrequency 0.5, 1, 2, 5, 10, 15, 20, 25, 30, 40,

50, 60, 75, 80, 100, 120, 150,200, 240, 300, 400, 480, 600, 800,1200, 1600, 2400, 4800 Hz

0.01Hz ± (0.005 %rdg +0.01Hz)

Duty cycle*1 0.39% ~ 99.60 % 0.390625% ± (0.01 %rdg +0.02%)Pulse width *1 1 / Frequency Range/256 ± (0.01 %rdg +0.3ms)Amplitude 5V, ± 5V, 12V, ± 12V 0.1V ± (2 %rdg + 0.2V)

NOTE: THE POSITIVE PULSE WIDTH MUST BE GREATER THAN 50 µµS FOR ADJUSTING THE DUTY CYCLE OR PULSE

WIDTH UNDER DIFFERENT FREQUENCY. ELSE, THE ACCURACY AND RANGE WILL BE DIFFERENT TO

DEFINITION. MAXIMUM INPUT VOLTAGE: 30 VDC


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2 GENERAL FEATURES

2.1 Flexibility

Advanced flexibility of performance has been achieved using microprocessor technology. The indicator-simulator UniCal MMX2 is a complete system for check outs, measurements and calibrations built into asingle compact portable instrument. A single instrument to perform all most common test and calibrationsao process control equipments and systems. 15 different functions available in a rugged, compact, twochannel and dual LCD display unit.

2.2 SELF-PROTECTIVE function

This instrument has a SELF-PROTECTIVE function to turn-off the output function. Under certainconditions the output will automatically shift to the standby mode. This future prevents the user frommaking incorrect measurements due to faulty indication.Some of the conditions which will activate this function are:

• Excessive noise in the power system.• Low external source power supply.• Overload condition.

2.3 Keyboard

A rugged rotary switch is used to allow the selection between the input and output multimeter functions.Seven buttons allow the auxiliary selection and setting for special functions: dynamic recording, data hold,select different combination of dual display, etc.

2.4 Display

The high quality high contrast LCD display allows easy readings even in poor light conditions. The dual40,000 counts resolution display can indicate the input and output values, the technical units and thesignal values simultaneously.

2.5 I/O Terminals

This device has two terminals for input functions that are protected against overloads to the limits shown inthe specifications. The other two terminals provide the output functions.

2.6 Digital interface

A digital interface, with TTL logic levels, is available as standard for communications with external units.A 4 wire cable, with a male mini connector, and an auxiliary module for TTL to RS232C conversion isavailable as an option.

2.7 Case

The case, made of shock-resistant and self-extinguishing ABS, is ergonomically designed for easypractical operation. The instrument is supplied in a vinyl protective case.


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3 PHYSICAL DESCRIPTION

The UniCal MMX2 portable calibrator consists of a rugged and compact case, a mother board with allbase functions, a rotary switch, a rubber keyboard, a dual LCD display and a 9V alkaline battery.The battery container is located on the back of the case and is accessible by removing the plastic cover(see cap. 10 for more information).The case has been designed and manufactured using modern CAD/CAM techniques giving considerationto the manufacturing process and ergonomic characteristics for easy operation and transportation. Thetwo halves of the case are joined together by five metal screws located on the back side.The vinyl case assures better protection of the instrument against knocks or scratches.


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4 FUNCTIONAL DESCRIPTION

This device can be used not only for instrument system maintenance, but also for maintaining andservicing industrial meters and for testing electronic circuits and electronic equipment. Sensors can bemeasured for automotive or automatic control system. In addition to generating high accuracy DC voltageand current sources, this device can also generate a square wave with PWM features.

Main Features§ Constant Voltage Source.§ Constant Current Source.§ Square Wave Generator with adjustable duty cycle and amplitude.§ Memory Generation Output§ Self-protective function§ DCV, ACV, DCA, ACA, Diode, Temperature, Frequency, Duty cycle and Pulse width

measurements.§ Back-lit display.§ Dynamic Recording.§ AC+DC True RMS measurement for non linear loads(both Voltage and Current).§ Multi-display for easily analyzing components of signals.§ Computer Interface with PC. for recording only

4.1 LCD display

1) : Auto power off is enabled

2), 4) : Diode/Audible continuity function annunciator 3) : Large digits for primary input. 4) : Continuity function annunciator 5) DH : Data hold or Refresh hold annunciator 6) AUTO : AUTO range Mode 7) ∆ : Zero(Delta) mode annunciator 8), 14) , : Programmable ramp output 9) : Output signal is in standby.10) : Square wave output11) : Output signal is active.12) : Calibrator mode select.13) : Communication ON annunciator14) : Programmable scan output.15) : Small digits for output and secondary input.16) : Constant current output17) : Constant voltage output18) : Frequency adjustment for Square wave output19) : Duty cycle adjustment for Square wave output20) : Pulse width adjustment for Square wave output21) Level : Amplitude adjustment for Square wave output22) DC : Direct Current or Voltage23) AC : Alternating Current or Voltage24) ACDC : AC+DC measurement (Alternating + Direct Current or Voltage)25) °C, °F : Temperature units for secondary display26) % : Duty cycle unit of square wave output function.27) Hz : Frequency unit of square wave output function.28) k Hz : Frequency unit of input function.29) m sec : Pulse width unit for output function.30) mA : Unit for constant current output


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31) V : Unit for constant voltage output32) mA : Unit for current measurement33) mV, V : Units for voltage measurement34) MAX AVG MIN : Dynamic recording mode, indicates the present reading35) MAX : Maximum reading36) AVG : Average reading37) MIN : Minimum reading38), 5) DH MAX : 1 ms peak hold maximum reading39), 5) DH MIN : 1 ms peak hold minimum reading40) : Low battery indication.41) DC : Direct Current or Voltage42) AC : Alternating Current or Voltage43) ACDC : Means AC+DC measurement (Alternating + Direct Current or

Voltage)44) °C, °F : Temperature units for primary display45) % : Duty cycle unit of input function.46) : Negative (-) trigger slope for Duty cycle and Pulse width

measurements47) : Positive (+) trigger slope for Duty cycle and Pulse width

measurements48) mA : Current unit of input function.49) mV, V : Voltage units of input function.50) m sec : Pulse width unit for input function51) sec : Pulse width unit for input function52) kHz : Frequency unit of input function.53) MkΩ : Resistance (ohm) units

8.8.8.8.8.+-

Level AC DC°C°F%kHzmAV/secµµ

AUTO ∆∆ DH MAX AVG MIN AC DC

8.8.8.8.8. °C % °FmAV/secMkΩΩHzµµ

1

2

34

65

789

101112

13 14 15 16 17 18 19 2021

22,23,24

25

2627,2829,30,31,32,3334,35,36,37,38,394041,42,434445

4746

48,49,50,5152,53

Figure 2. LCD Display


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4.2 Rotary Switch

To turn this device on and select a function, turn the rotary switch (Figure 3) to a switch setting. The wholedisplay will light for one second.

Input OutputMultimeter(secondary) Calibrator(primary)

1) Power Off2) DC, AC or DC+AC Voltage measurements. Square wave output

Constant current : ± 25 mAConstant voltage : ± 1.5V, ± 15V

3) DC, AC or DC+AC milli-volt measurements. Constant voltage : ± 1.5V, ± 15V4) Resistance and Continuity measurements: 400Ω~ 40MΩ Constant voltage : ± 1.5V, ± 15V5) Diode measurement. Constant current : ± 25 mA6) DC,AC or DC+AC milli-ampere Constant voltage : ± 1.5V, ± 15V

measurements: 40, 400 mA Constant current : ± 25 mASquare wave output

In the Calibrator mode: White labels indicate the source function.Green labels indicate the measure function.

In the Multimeter mode: White labels indicate the primary display.Green labels indicate the secondary display.

Figure 3. Rotary Switch


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4.3 Input and Output terminals

WARNING

TO AVOID DAMAGING THIS DEVICE, DO NOT EXCEED THE INPUT LIMIT SHOWN BELOW TABLE 2.

ROTARY SWITCH FUNCTION INPUT TERMINALV ΩΩ mA

OVERLOAD PROTECTION

AC/DC 4V ~ 300VAC/DC 40mV ~ 400mV 300 V AC RMSOHM (Ω) + and -DIODE ( )AC/DC 40 ~400mA 250V/630mA, Quick acting fuse

Table 2. Input limit specification.

This device has two terminals for input functions that are protected against overloads to the limits shown inthe specifications. The other two terminals provide the output functions. The overload protection is DC 30volts.

1) Negative terminal for all measurements.2) Positive terminal for Volts, Ohms, Diode, Current, Temperature and Frequency, Duty Cycle and

Pulse width measurements.3) Negative output terminal.4) Positive input terminal.

Figure 4. Input / Output Terminals


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5 UNPACKING

Remove the instrument from its packing case and remove any shipping ties, clamps, or packing materials.Carefully follow any instructions given on any attached tags.Inspect the instrument for scratches, dents, damage to case corner etc. which may have occurred duringshipment.If any mechanical damage is noted, report the damage to the shipping carrier and then notify EUROTRONdirectly or its nearest agent, and retain the damaged packaging for inspection.

A label, inside the battery container, indicates the serial number of the instrument.Refer to this number for any enquiry for service, spare parts supply or application and technical supportrequirements.EUROTRON will keep a data base with all information regarding your instrument.


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6 PRE-OPERATIONAL CHECK

WARNING

READ "SAFETY INFORMATION" BEFORE USING THIS DEVICE.

NOTE : YOUR PROCESS CALIBRATOR MULTIMETER IS A HAND-HELD, BATTERY-OPERATED INSTRUMENT FOR

TESTING AND TROUBLESHOOTING ELECTRONIC SYSTEMS. IF THIS DEVICE IS DAMAGED OR MISSING AN ACCESSORY,CONTACT THE PLACE OF PURCHASE IMMEDIATELY.

A WARNING identifies conditions and actions that may cause hazard(s) to the user; a CAUTION identifiesconditions and actions that may damage this Device. International electrical symbols used are explained inTable 1.

AC - Alternating Current

DC - Direct Current

AC and DC - Alternating and Direct Current

WGround

;Double Insulation

!See Explanation In The Manual

Table 1. International Electrical Symbols


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7 OPERATIONS

7.1 Push-Button operations

The operation of push-buttons is described below. When a button is pressed, a display symbol will light,and the beeper will sounds. Turning the rotary switch to another switch setting resets all push buttons totheir default state.

7.1.1 Output operations

Figure 5. Output Buttons.

1. mm (SHIFT):Back-light/Shift

• Press this button momentarily to shift operation of push-buttons. All push-buttons are used to

adjust OUTPUT states. The annunicator will turn on while in the output mode.

2. MODE:Select adjustment mode

• For square wave output, press this button momentarily to select which parameter will beadjusted. Press this button to cycle through Hz, %, ms and amplitude adjustment modes.

• For constant voltage output, press this button momentarily to cycle through ±1.5 V, ±15V,SCAN ±1.5 V, SCAN ±15V, RAMP ±1.5 V, RAMP ±15V output modes.

• For constant current output, press this button momentarily to cycle through ±25 mA, SCAN±25 mA, RAMP ±25 mA, output modes.

• After setting SCAN and RAMP for constant voltage and current output, press and hold thisbutton 1 second to go to programming mode. For detail description and operation, pleaserefer to the section about programming.

3. 33 (LEFT):Select which Digits or polarity will be adjusted by pressing UP tor DOWN 6 button.

• For voltage and current output, press this button momentarily to move the adjustment positionfrom polarity, digit 1, 2, 3, 4, 5 then back to polarity. The selected position will flash on thedisplay.

← Digit 5 ← Digit 4 ← Digit 3 ← Digit 2 ← Digit 1 ← ±

• After setting SCAN for voltage and current output, press this button momentarily to selectContinuous, One Cycle or Step output. Normally, it will default to continuous output. For detaildescription and operation, please refer to the section about programming.

• After setting RAMP for voltage and current output, press this button momentarily to selectContinuous or One Cycle output. Normally, it will default to continuous output. For detaildescription and operation, please refer to the section about programming.


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4. 44 (RIGHT):Select which Digits or polarity will be adjusted by pushing UP5 or DOWN 6button.

• Press this button momentarily to move the adjustment position from polarity, digit 5, 4, 3, 2, 1then back to polarity. The selected position will flash on the display.

± → Digit 5 → Digit 4 → Digit 3 → Digit 2 → Digit 1 → ±

5. 55 (UP): Adjust digit or polarity

• Press this button momentarily to increase 1 count for the selected digit or toggle the + and -for polarity of output state.

• Press and hold this button to repeat above action.

6. 66( DOWN):Adjust digit or polarity

• Press this button momentarily to decrease 1 count for the selected digit or toggle the + and -for polarity of output state.

• Press and hold this button to repeat above action.

7. OUTPUT Control the output state

• Press this button momentarily to toggle the output state ON and OFF. The screen will display

to indicate the out is on. Press this button momentarily again, the screen will display

to indicate the device has disabled the signal output.• When programming of SCAN and RAMP functions. After setting for each step, press this

button momentarily to save your setting.

7.1.2 Input operations

Figure 6. Input Buttons.

1. DC •• AC / PEAK (MODE) :Select DC, AC, DC+AC, Peak Test

• This button is used for selecting the measurement of either alternating source, direct source,DC+AC or 1 ms peak hold (glitch capture) function.

• Press this button momentarily to step through DC,AC and DC+AC test.• Press this button for more than 1 second to toggle 1 ms peak hold ON/OFF. The display will

show "DH MAX" to indicate the PEAK + and show "DH MIN" to indicate the PEAK -.• For Ohm test, press this button momentarily to toggle" " ON/OFF. The continuity beeper

will sound when test value is below 100 counts.• For Duty cycle and Pulse width tests, press this button for more than 1 second to change the

trigger slope + or -.

2. DH:DATA HOLD or Refresh Data Hold

• The data hold function allows operator to hold the displayed digital value.


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• To select " Refresh Hold " use Power-ON Options. The reading will be updated to theindicator automatically when the reading is changed. Simultaneously, the beeper sounds atone to indicate the update.

• Press this button momentarily to toggle DH on or off.

3. DH (MAX •• MIN) :Dynamic Recording

• Record maximum, minimum, and calculates true average.• Press this button for more than 1 second to toggle recording mode on or off.• Press this button momentarily to cycle through MAX, MIN, AVG and present (MAX AVG MIN)

readings.• The beeper sounds when a new maximum or minimum value is recorded.• Press this button momentarily to cycle through Peak + and Peak - readings after setting peak

mode. The screen shows "DH MAX" to indicate the PEAK + and show "DH MIN" to indicatethe PEAK -.

4. ∆∆ REL( ZERO)Relative function

• The relative function shows the difference between the measured value and the stored value.• Press to toggle Relative(∆) ON or OFF.• For mV measurements, press this button for more than 1 second to enter Temperature

measurement. Press this button again for more than 1 second will come back the mVmeasurement.

5. RANGE:• In auto-range, press this button to select manual range and turn off the " AUTO " annunciator.• In manual range, press this button momentarily to step up 1 range at a time. Press this button

for more than 1 second to select auto-range.• In auto-range, the " AUTO " annunciator is lit and the meter will select an appropriate range

for resolution if a reading is greater than maximum available range, " OL "(overload) will bedisplayed on the display. The meter will select a lower range when reading is less than about9% of full scale.

• Press this button momentarily to change measuring range and re-start the PEAK+ and PEAK-measurements after setting the peak mode.

6. DUAL:Dual Display Combination

• Press this button momentarily to select different combinations of dual display. Thecombinations of dual display are shown following table.

Function Primary display Secondary displayAC Voltage AC Volt Frequency ( AC coupling )DC Voltage DC Volt Frequency ( DC coupling )AC + DC Voltage AC+DC Volt Frequency ( AC coupling )AC Current AC Amps Frequency ( AC coupling )DC Current DC Amps Frequency ( DC coupling )AC+DC Current AC+DC Amps Frequency ( AC coupling )Temperature Celsius (°C) Fahrenheit (°F)

Fahrenheit (°F) Celsius (°C)

• Press this button momentarily to re-start a new peak value measurement after setting peakmode.

• After setting the SCAN and RAMP modes for output function, this button will be disabled.

7. Hz:Select Frequency, Duty Cycle, Pulse Width Test


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• When measuring Volts or Amps, press this button momentarily to enter Frequencymeasurement while Voltage or Current is indicated on the secondary display. Press thisbutton again to step through Frequency , Duty cycle, Pulse width and to return to Voltage orCurrent measurement.

• The combinations of dual display are shown in the following by pressing Hz button.

Function Primary display Secondary display RemarkAC Voltage Frequency (Hz) AC Volt

Duty Cycle (%) AC VoltPulse Width (ms) AC Volt

DC Voltage Frequency (Hz) DC VoltDuty Cycle (%) DC VoltPulse Width (ms) DC Volt

AC+DC Voltage Frequency (Hz) AC+DC VoltDuty Cycle (%) AC+DC VoltPulse Width (ms) AC+DC Volt

DC/AC Current Frequency (Hz) DC/AC AmpsDuty Cycle (%) DC/AC AmpsPulse Width (ms) DC/AC Amps

AC+DC Current Frequency (Hz) AC+DC AmpsDuty Cycle (%) AC+DC AmpsPulse Width (ms) AC+DC Amps

• After setting the SCAN and RAMP modes for output function, this button will be disabled.

8. mm :Back-light/Shift

• Press this button momentarily to shift operation of push-buttons.• Press this button for more than 1 second to Toggle back-light ON or OFF. Back-light turns off

automatically after 30 seconds.

7.2 Quick start procedure

To quickly set-up and output a process calibration signal:

§ Plug the external source 12 V battery pack into the left side of the meter.

§ Turn the function switch to the white function required ( V, mA or Square wave). The adjacent greenfunction will be the simultaneous measure units.

§ Press the white “SHIFT” button to enter the calibrator standby mode.

§ Use the arrow buttons (left / right for digit selection, up / down for value) to set the output value.

§ Connect the OUTPUT jacks to the device to be tested.

§ Press the OUTPUT(Hz) button. The process signal will become active.

§ press the OUTPUT button again to turn off the signal.

7.3 Selecting Power-on options

Some options can be selected only when you turn the meter on.


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These power-on options are listed in Table 3. To select power-on options, press and hold the push buttonwhile turning the rotary switch to any on position. Power-on options remain selected until the meter isturned off.

PUSHBUTTON OPTION DESCRIPTIONMODE Demonstrate Annunciators

To demonstrate the annunciators, The entire annunciators will be displayed. Pressthe button again to exit demonstration mode.Disable auto-power offIn general, the auto power off function will turn the meter off if neither rotary switchnor push button is activated for 15 minutes. When auto power off is disabled, themeter will stay on continuously.Auto-power off will be auto disabled in Dynamic Recording.

DH Enable " Refresh Hold".

∆ REL Disable beeper function. Turns off all beeper functions.

RANGE Select 4,000/40,000 counts resolution. In general, The meter is 40,000 counts (43/4 digits) resolution and the response time is one time per second. By this option,the meter can be changed to 4,000 counts (3 3/4 digits) resolution and theresponse time can be updated to 3.3 times per second

m Disable turning off the back-light automatically after 30 seconds.

DUAL Set Computer Interface. Turn on Data output function via RS-232C interface. The sign will be lit.

Table 3. Power-ON Options

7.4 Programming Output

For constant voltage and current output, this device offers two usefully functions. One is SCAN output, ithas 16 steps and can be set for amplitude and time interval. The other one is RAMP output. It has dualslopes for linear simulation, and can be set to different resolutions to control the ramp time.

7.4.1 Scan output

1. How to select the scan function.Turn the rotary switch to the outer white mA or V output position. Press SHIFT button

momentarily to shift operation of push-buttons. The annunciator will be on after setting shiftmode. For voltage output, press MODE button momentarily to cycle through ±1.5 V, ±15V, SCAN±1.5 V, SCAN ±15V, RAMP ±1.5 V, RAMP ±15V output modes. For current output, press MODEbutton momentarily to cycle through ±25 mA, SCAN ±25 mA, RAMP ±25 mA, output modes.

After setting the scan function, the annunciator will be on.

2. The 16 steps of below are initially set in memory:Mode ±1.5000 V ±15.000 V ±25.000 mAStep Amplitude Time

intervalAmplitude Time

intervalAmplitude Time

interval 1 +1.5000 V 02 sec +15.000 V 02 sec +25.000 mA 02 sec 2 +1.2000 V 02 sec +12.000 V 02 sec +20.000 mA 02 sec 3 +0.9000 V 02 sec +09.000 V 02 sec +15.000 mA 02 sec 4 +0.6000 V 02 sec +06.000 V 02 sec +10.000 mA 02 sec 5 +0.3000 V 02 sec +03.000 V 02 sec +05.000 mA 02 sec 6 +0.0000 V 02 sec +00.000 V 02 sec +00.000 mA 02 sec


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7 -0.3000 V 02 sec -03.000 V 02 sec -05.000 mA 02 sec 8 -0.6000 V 02 sec -06.000 V 02 sec -10.000 mA 02 sec 9 -0.9000 V 02 sec -09.000 V 02 sec -15.000 mA 02 sec 10 -1.2000 V 02 sec -12.000 V 02 sec -20.000 mA 02 sec 11 -1.5000 V 02 sec -15.000 V 02 sec -25.000 mA 02 sec 12 +0.0000 V 00 sec +00.000 V 00 sec +00.000 mA 00 sec 13 +0.0000 V 00 sec +00.000 V 00 sec +00.000 mA 00 sec 14 +0.0000 V 00 sec +00.000 V 00 sec +00.000 mA 00 sec 15 -1.5000 V 02 sec -15.000 V 02 sec -25.000 mA 02 sec 16 +0.0000 V 02 sec +00.000 V 02 sec +00.000 mA 02 sec

3. How to select automatic output.After setting function, you can select 3 output modes by pressing the “3 (LEFT)” or “4(RIGHT) ” buttons. Press these buttons momentarily to select Continuous, Cycle or Step output.The small digits display will show Cont, CYCLE, or StEP respectively.

C ont+

Level AC DC

VAUTO DC

0 0 0 0 0 V

step+

VAUTO DC

0 0 0 0 0 V

cycle+

VAUTO DC

0 0 0 0 0 V

Presst or u

Presst or u

Presst or u

Figure 7. Operations for selecting SCAN output types .

For Continuous and Cycle outputs always start from step 1. If you set the time interval of step1 to 00second, the output will send out the amplitude of step 1 when you activate the output function.

1) Cont: Continuously cycled output. Press the “OUTPUT” button to start the source output. The meterwill output the programmed memory values starting at step 1 and continuing until the step 16 isreached or until a step containing a time interval of “00” seconds is reached. The output will thenrevert back to step 1 and begin the cycle again. The amplitude of each step will be maintained for theperiod of time stored in memory for that step. For example, for the initial memory setup, the outputwill step from 1, 2,3…… 11(00 interval stored in step 12) and return to step1.

2) CYCLE: One cycle output. Press the “OUTPUT” button to start the source output. The meter willoutput the programmed memory values starting at step 1 and continuing until the step 16 is reachedor until a step containing a time interval of “00” seconds is reached. The output will lock on the finalstep. The amplitude of each step will be maintained for the period of time stored in memory for thatstep. For example, for the initial memory setup, the output will step from 1, 2,3…… 11(00 intervalstored in step 12) and lock on step 11.

3) STEP: Manually stepped output. Press the “OUTPUT” button to start the source output. The meterwill output the programmed memory values starting at step 1. Press “UP” or “DOWN” arrow keys toadvances to the next or last step. The amplitude of currently selected step will remain on until a newstep or the output is returned to standby mode.


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Figure 8. SCAN OUTPUT.

4. Scan output programming. In the scan , standby mode, press and hold “MODE” button for 1 second to enter the scanprogramming mode. The available selections for adjustment are : Step number(1 to 16), Timeinterval (0 to 99 seconds) and amplitude. The flashing digits indicate which adjustment isselected. The arrow buttons are used to set the value desired. The “MODE” key is used toadvance from one selection to the next. When all the values are set to proper setting, press the“OUTPUT” key to store the setting into memory.

1.5000+

V

0 1 - 0 2 sec

Step16 memories

Outputamplitude

0..99 secTime interval

Figure 9. SCAN output programming.

7.4.2 RAMP output

1. How to select the RAMP function.Turn the rotary switch to the outer white mA or V output position.Press SHIFT button momentarily to shift operation of push-buttons. The annunciator will beon after setting shift mode.For voltage output, press MODE button momentarily to cycle through ±1.5 V, ±15V, SCAN ±1.5V, SCAN ±15V, RAMP ±1.5 V, RAMP ±15V output modes. For current output, press MODEbutton momentarily to cycle through ±25 mA, SCAN ±25 mA, RAMP ±25 mA, output modes.


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After setting the RAMP function, the and sign will be indicated on the display.

2. Table is on initial memory values:Mode ± 1.5000 V ± 15.000 V ± 25.000mA

Position Amplitude Resolution Amplitude Resolution Amplitude ResolutionStart -1.5000 V 015 steps -15.000 V 015 steps -25.000mA 025 stepsEnd +1.5000 V 015 steps +15.000 V 015 steps +25.000mA 025 steps

3. How to select automatic output.After setting RAMP function, you can select 2 output modes by pressing the “3 (LEFT)” or “4(RIGHT) ” buttons. Press these buttons momentarily to select Continuous or Cycle output. Thesmall digits of screen will show Cont or CYCLE respectively.

1) Cont: Continuous output. Press the “OUTPUT” button to start the source output. The meterwill output ramp according to programmed memory values. The ramp will begin atprogrammed start amplitude and ramp to programmed end amplitude with a resolutionaccording to number of steps programmed(1-999) in the start screen. The time interval foreach step is 0.33 seconds. The ramp will then ramp from the end value to the start valuewith the number of steps programmed in the end value screen. Again, the time interval foreach step is 0.33 seconds. This cycle will continue until the “OUTPUT” button is pressed.Example: initial values for 1.5 V range. Start= -1.5V, End= +1.5V, Steps= 15, Resolution=(-1.5V-1.5V) / 15steps = 0.2 V. Time = (15 steps x 0.33 sec)= 4.95 sec.

2) CYCLE: One cycle output. Same as Cont except the output will lock at the end of one cycle.

C ont+

Level AC DC

V

AUTO DC

0 0 0 0 0 V

cycle+

V

AUTO DC

0 0 0 0 0 V

Presst or u

Figure 10. Operations for selecting RAMP output types.

4. Memory programming for RAMP output. In the Ramp standby mode, press and hold “MODE” button for 1 second to enter the Rampprogramming mode. The available selections for adjustment are : Start and End position, Numberof steps of resolution (1 to 999) and amplitude. The flashing digits indicate which adjustment isselected. The arrow buttons are used to set the value desired. The “MODE” key is used toadvance from one selection to the next. When all the values are set to proper setting, press the“OUTPUT” key to store the setting into memory.

Figure 11. RAMP OUTPUT.

Start positionStart position

End positionEach interval is (startposition – end position)divide resolution

Each interval is (startposition – end position)divide resolution


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Figure 12. RAMP output programming.

7.4.3 Square wave output

This unique function, can be applied to many various applications. For instance, PWM(pulse widthmodulation) out, regulated voltage control, synchronous clock(baud rate generator) etc. Also it can beused to check and calibrate flow-meter displays, counters, tachometers, oscilloscopes, frequencyconverter, frequency transmitters and other frequency input devices. That is a free-for-all applicationfunction.

It can be set for frequency, amplitude, duty cycle and pulse width for square wave output.

1. How to select the square wave output function.a) Turn the rotary switch to the output position.

b) Press “SHIFT” button momentarily to shift operation of push-buttons. The annunicator willbe on.

c) For square wave output, it has 4 parameters can be adjusted. Initial setting are Frequency(150Hz), Duty cycle(50.00 %), Pulse width(3.3333ms) and Amplitude( + 5V). See the Figure 13.

d) Press “OUTPUT” button momentarily to send out the signal.

2. 28 discreet frequencies are available:

Frequency type0.5, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 480, 600, 800, 1200,1600, 2400, 4800 Hz

Procedure to change frequency:a) Press “SHIFT” button momentarily to shift operation of push-buttons. You will find the

annunicator will be on.b) Press “MODE” button momentarily to select frequency(Hz) output.c) Select the frequency by pressing the 5 (UP) or 6( DOWN) buttons.d) Press “OUTPUT” button momentarily to send out the signal.

3. The duty cycle has an adjust range of 256 steps. Each step is 0.390625 %, but the screencan indicate 00.39 % only.To adjust the duty cycle, refer to following procedures:

a) After selecting the frequency, press “MODE” button momentarily, and the annunciator be on.b) Press the 5 (UP) or 6( DOWN) buttons to adjust the duty cycle.


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4. The Pulse width also has an adjustment range of 256 steps. Each step is 1/ (256*frequency).a) After selecting the duty cycle, press “MODE” button momentarily, the annunciator be on.b) Press the 5 (UP) or 6( DOWN) buttons to adjust the duty cycle.

5. The amplitude has 4 levels which can be selected, they are + 5V, ±± 5V, + 12V, ±± 12V,respectively.

procedure to select the amplitude.a) After selecting the pulse width, press “MODE” button momentarily, the Level annunciator be on.b) Press the 5 (UP) or 6( DOWN) buttons to select the amplitudes.

Figure 13. Parameter selection for square wave output.

7.5 Special functions

This device provides operators with various functions including:• Dynamic Recording• Data Hold / Refresh Hold• Relative• Auto Power Off and Sleep Mode• Disable Auto Power Off• Demonstrate Display Annunciator


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• Back-lit LCD for easy reading in the dark• Continuity Function For Ohms Measurement• Combination Display• ms Peak Hold

7.5.1 Dynamic recording

The dynamic recording mode can be used to catch intermittent turn on or turn off surges, verifyperformance, measure while you are away, or take readings while you are operating the equipment undertest and can not watch the meter.

The average reading is useful for smoothing out unstable or changing inputs, estimating the percentage oftime a circuit is operated, or verifying circuit performance.

The operational procedures are described below:1) Press "MAX • MIN" for more than 1 second to enter the dynamic recording. The present value is

stored to memories of maximum, minimum and average, also the MAX AVG MIN annunicator will belit.

2) Press this button for more than 1 second to exit recording mode.3) Press this button momentarily to cycle through maximum, minimum, average and present readings.

The MAX, MIN, AVG or MAX AVG MIN annunciator turns on respectively to indicate which value isbeing. displayed. See Figure 14.

4) The beeper sounds when a new maximum or minimum value is recorded.5) If an overload is recorded the averaging function will stop. An average value becomes " OL

"(overload).

6) In dynamic recording, the auto power off feature is disabled. and the " " will be turned off.7) Selecting dynamic recording in auto range, it will record the value of MAX, MIN or AVG for different

ranges.8) The recording speed of dynamic recording is about 100 milli-seconds (0.1 second).9) The average value is the true average of all measured values taken since the recording mode was

entered.


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Figure 14. Display of Dynamic Recording

7.5.2 Data hold / Refresh hold

The data hold function allows operators to hold the displayed digital value. Press DH button to enter thedata hold mode, and the "DH" will be displayed.Press the button again to exit. The present reading is now shown.You can use the power-on option to set the Refresh Hold when you are working on a difficult measuringfield. This function will update a old value with new measured value automatically, and sound a tone toremind user. The push button operation is same as for Data hold.

Figure 15. Data Hold Operation.


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7.5.3 Relative (Zero)

The relative function subtracts a stored value from the present measurement and displays the result.

1) Press ∆REL button momentarily to set the relative mode. This sets the display to zero and stores thedisplayed reading as a reference value, also " ∆ " will be displayed.

2) Both auto or manual range can set relative mode. The relative mode can't be set when an overloadhas occurred.

3) Press this button again to exit the relative mode.4) When the Ohm measurement mode is entered, the display will read a non zero value due to the

presence of test leads. You can use the relative function to Zero the display.

Figure 16. Relative(Zero) Operation.

7.5.4 Auto Power-off and sleep mode

Two steps for power saving:1) The instrument may enter "sleep" mode within 15 minutes, if none of the following happens.

1-1. Push buttons are used.1-2. Measurement function is changed.1-3. Dynamic recording is set.1-4. 1 ms peak hold is set.1-5. Disable auto power off with power-up option.1-6. The output has been enabled, and the annunciator is on.

2) In sleep mode, the LCD will display a blinking " . . . " signal.2-1. To wake-up from the sleep mode, press any push button for more than 0.5 sec or turn the

rotary switch.2-2. Without waking up, after 15 minutes, the meter will automatically shut off completely.

3) You must turn the rotary switch to the OFF position, then turn on again to activate the meter afterauto power off.

Figure 17. Sleep Mode


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7.5.5 Disable auto Power-off

When the meter is to be used for long periods of time, the operator may want to disable the auto poweroff. Once the auto power off function is disabled, the meter will stay on continuously. To shut off the meterturn the rotary switch to the off position.To activate this function, press and hold the MODE button before switching the meter power on. When all

annunciators are displayed, press any button momentarily to exit demonstration mode, and the " "annunciator will be off.

7.5.6 Demonstrate display annunciators

To demonstrate the annunciators, press the MODE button and turn on the meter simultaneously. Allannunciators will be displayed. Press any button to exit demonstration mode.

Figure 18. Demonstrate Annunciator.

7.5.7 Backlit display for easy reading in the dark

Press m (white) button for more than 1 second to toggle back-light ON/OFF.Back-light turns off automatically after 30 seconds.To disable back-light(off automatically after 30 seconds), please refer to POWER_ON options.

Figure 19. Back-lit Display.


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7.5.8 Continuity function for Ohms measurement

In Ohm test, press the MODE button momentarily to toggle CONTINUITY function ON/OFF. Momentarilypushing this button will turn the beeper function on/off.While testing continuity, the beeper will sound if the resistance falls below the typical values indicated inTable 4.

measuring range Beeper On if 400.0 Ω <10 Ω 4.000 kΩ <100 Ω 40.00 kΩ <1 kΩ 400.0 kΩ <10 kΩ 4.000 MΩ <100 kΩ 40.00 MΩ <1 MΩ

Table 4. Beeper Responses in Continuity Test

Figure 20. Continuity Operation.

7.5.9 Combination display

The frequency measuring mode helps detect the presence of harmonic currents in neutral conductors anddetermines whether these neutral currents are the result of unbalanced phases or non-linear loads.For Voltage or Current test, press Hz button momentarily to enter Frequency test. Voltage or Current willdisplay on the secondary display, the frequency will display on the primary display. Press this button againto step through Frequency, Duty cycle and pulse width tests. This allows simultaneously monitoring ofcurrent levels and frequency(or Duty Cycle, or pulse width).Press Hz button more than 1 second to return to Voltage or Current measurement.Please refer to the chapter of how to operate. For detail of other combination displays.


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Figure 21. Combination Display for Voltage Measurements.

7.5.10 1 ms Peak Hold

You can use this Meter to analyze components such as power distribution transformers and power factorcorrection capacitors. The additional features allow the measurement of the half-cycle peak voltage byusing the 1 ms peak hold feature. This allows the determination of the crest factor:

Crest factor = Peak value/True RMS value

2) Press MODE button more than 1 second to toggle 1 ms peak hold mode ON/OFF.3) Press DH(MAX• MIN) button momentarily to show peak + or peak - value after setting the peak mode.

The display shows "DH MAX" to indicate the PEAK + and shows "DH MIN" to indicate the PEAK-.See Figure 22.

4) The secondary digits show the relative stamping time for Peak reading.5) If the reading is " OL", then you can push RANGE button momentarily to change measuring range

and re-start the PEAK measurement after setting the peak mode. ´6) Press DUAL button momentarily to re-start the 1 ms peak hold again after setting peak mode.


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Figure 22. 1 ms Peak Hold Display.


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8 COMMUNICATION

This device has a RS232 communication option. This function will assist user to recording anddocumenting data easy.

Please refer to the following procedures If you want to communicate with a personal computer.1. Push and hold the DUAL button then turn the rotary switch from off position to any function, wait 1

second, then release the push button. You will find that the sign be lit on the display.2. Connect one side of cable to the holster of meter and connect the 9 pin’s cable terminal to

communication port 1 or 2 of the personal computer. See the Figure 23.3. Execute the software.

Figure 23. Cable Connection for Communication


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9 APPLICATIONS

9.1 AC Voltage measurement

1) Set the rotary switch to " V ".2) Connect the black test lead to " - " input terminal and red test lead to " + " input terminal.3) Press MODE button momentarily to enter AC voltage measurement.4) Touch the probes to the test points and read the display.5) Press DUAL button momentarily to enter multi-display mode.

DUAL button operation for AC voltage.Key operation Primary display Secondary displayPress Dual AC Voltage HzPress Dual AC Voltage

7) Press Hz button momentarily to enter frequency measurement and press this button again to stepthrough Duty cycle, Pulse width and frequency measurements.

Key operation Primary display Secondary displayPress Hz Hz AC VoltagePress Hz % AC VoltagePress Hz ms AC VoltagePress Hz and hold morethan 1 second

AC Voltage

Figure 24. DUAL and MODE button operation for AC voltage.


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Figure 25. Hz button operation for AC voltage.

9.2 DC Voltage measurement

1) Set the rotary switch to " V ".2) Connect the black test lead to " - " input terminal and red test lead to " + " terminal.3) Touch the probes to the test points and read the display.4) Press MODE button momentarily to step through AC, DC+AC and DC test.

Key operation Primary display Secondary displayPress MODE AC VoltagePress MODE AC+DC VoltagePress MODE DC Voltage

5) Push DUAL button momentarily to enter multi-display mode. Below, the table is DUAL button operationfor DC, AC and AC+DC voltage.

Key operation Primary display Secondary displayPress Dual DC Voltage ( AC, AC+DC) HzPress Dual DC Voltage ( AC, AC+DC)


Key operation Primary display Secondary displayPress Hz Hz DC(AC, AC+DC) VoltagePress Hz % DC(AC, AC+DC) VoltagePress Hz ms DC(AC, AC+DC) VoltagePress Hz and hold morethan 1 second

DC(AC, AC+DC) Voltage


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Figure 26. Hz button operation for AC+DC voltage.

9.3 mV measurement

1) Set the rotary switch to " mV ".2) Connect the black test lead to " - " input terminal and red test lead to " + " input terminal.3) Touch the probes to the test points and read the display.4) Press MODE button momentarily to step through AC , DC+AC and DC test.

Key operation Primary display Secondary displayPress MODE AC mVPress MODE AC+DC mVPress MODE DC mV

5) Press DUAL button momentarily to enter multi-display mode. Below, the table is DUAL buttonoperation for DC mV.

Key operation Primary display Secondary displayPress Dual DC mV (AC, AC+DC) HzPress Dual DC mV (AC, AC+DC)


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Key operation Primary display Secondary displayPress Hz Hz DC(AC, AC+DC) mVPress Hz % DC(AC, AC+DC) mVPress Hz ms DC(AC, AC+DC) mVPress Hz and hold more than1 second

DC(AC, AC+DC) mV

Milli-volt output type pressure transducerRange 0~ 5 PSIG 0~15PSIG 0~30PSIG 0~60PSIG 0~100PSIG 0~ 150 PSIGOutput 50 mV 100 mV 80 mV 60 mV 100 mV 60 mV

9.4 Resistance measurement

1) Set the rotary switch to " Ù".2) Connect the black test lead to " - " input terminal and red test lead to " + " input terminal.3) Touch the probes to resistor (or shunt) and read the display.4) In Ohm test, press MODE button momentarily to toggle CONTINUITY function ON/OFF. The

continuity range is 0-400.0Ù. Momentarily pushing this button will only turn the beeper off. Whiletesting continuity, the beeper will sound if the resistance falls below 10Ù in the 400.0Ù range.

8.5 Diode Check

A good diode allows current to flow in one direction only. To test a diode, turn the power off, remove thediode from the circuit, and proceed as follows:1) Set the rotary switch to " "position.2) Connect the black test lead to " - " input terminal and red test lead to " + " input terminal.3) Touch the red lead to the positive side of the diode and the black lead to the negative side. The

meter can display diode voltage drops to approximately 2.5 V. A typical voltage drop is 0.3 ~ 0.8 V,and the meter will sound a beep to remind user.

4) Reverse the probes and measure the voltage across the diode again. If the diode is: • Good : " OL " is displayed. • Shorted : Near 0 V drop is displayed in both directions, and the beeper sounds continuously. • Open : " OL " is displayed in both directions.

5) Repeat step 3 and 4 for other diodes.

9.6 mA measurement

1) Set the rotary switch to " mA ".2) Connect the black test lead to " - " input terminal and red test lead to " + " input terminal.3) Touch the probes to the test points and read the display.4) Press MODE button momentarily to step through AC, DC+AC and DC test.

Key operation Primary display Secondary displayPress MODE AC mAPress MODE AC+DC mAPress MODE DC mA

5) Press DUAL button momentarily to enter multi-display mode.


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Key operation Primary display Secondary displayPush Dual DC(AC, AC+DC) mA HzPush Dual DC(AC, AC+DC) mA


Key operation Primary display Secondary displayPress Hz Hz DC(AC, AC+DC) mAPress Hz % DC(AC, AC+DC) mAPress Hz ms DC(AC, AC+DC) mAPress Hz and hold more than1 second

DC(AC, AC+DC) mA

9.7 Temperature measurement

The thermocouple probe that comes with the meter is suitable for making temperature measurementsfrom -40°C (°F) to 230°C (440°F) in air or liquid. For best results, use a thermocouple probe designed foreach application (i.e. an immersion probe for liquid or gel, an air probe for air measurements, etc.). Followthe measuring techniques below:

• Clean the measurement surface and make sure the probe is attached securely to the surface.• When measuring above ambient temperatures, move the thermocouple on the surface until

you get the highest temperature reading.• When measuring below ambient temperatures, move the thermocouple on the surface until

you get the lowest temperature reading.

1) Turn the rotary switch to the " mV " range.2) Plug thermocouple probe into the "+” and "-" input terminals.3) Press and hold “∆ REL” button for more than 1 second for temperature measurement.4) Press "DUAL " button to toggle between °C (Celsius) and °F (Fahrenheit) on primary display.5) Attach the thermocouple to the surface being measured.6) Read the display.

9.8 Simulate and measure frequency transmitter

For some frequency transmitters, you can use square wave output to do a source simulator and measurethe current from transmitter output.

1. Turn the rotary switch to the " mA / " range.2. Press MODE momentarily to select square wave output function.3. The default output :FREQUENCY= 150 Hz, Duty cycle = 50 %.4. Press MODE momentarily to cycle through duty cycle. Pulse width, output level and frequency

adjustments. Please refer to page 23 for details.5. Connect the test leads and alligator clips to input and output terminals, respectively.6. Connect the test leads to the output terminals of the transducer.7. Connect the output leads to " - " and " + "terminals of output, fix the alligator clips to the input of

transducer. Make sure the polarity correct.8. Press OUTPUT momentarily to send out the signal.9. Read the display. Compare the current reading and frequency input, whether proportional to the

specifications for transducer.10. Change the frequency output and monitor the current reading on the display.


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9.9 Trouble-shooting equipment

You can use constant voltage, constant current and square wave outputs as a source, then use the meterfunction to check output for the device when test.

9.10 Component test

The constant current can be used to test semiconductors such as ZENER DIODE, hfe of transistor andother verifications for Analog to Digital converter or OP-AMPS.

9.10.1 Zener diode test

Figure 27. ZENER diode test.

9.10.2 Transistor hfe test

Note: Check component specifications for correct parameters.

hfe = IC / IB = 152 hfe = IC / IB = 300 IB = CURRENT SOURCE, IC = Meter Reading


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Figure 28. TRANSISTOR hfe TEST.


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10 MAINTENANCE

WARNING

TO AVOID ELECTRICAL SHOCK, DO NOT PERFORM ANY SERVICE UNLESS YOU ARE QUALIFIED TO DO SO.

10.1 Safety Informations

To ensure that you use this device safely, follow the safety guidelines listed below:

§ Read this operation manual completely before using this device and follow all safety instructions.§ This device is for indoor use, altitude up to 2,000 m(6561 ft).§ Avoid working alone.§ Use the device only as specified in this manual; Otherwise, the protection provided by the meter may

be impaired.§ Never measure Voltage while the test leads are inserted into the current input terminals.§ Do not use this device if it looks damaged.§ Inspect the leads for damaged insulation or exposed metal. Check test lead continuity. Replace

damaged leads.§ Disconnect the power and discharge all high-voltage capacitors before testing in the resistance,

continuity, and diode function.§ Be cautions when working above 60V DC or 30V AC RMS. Such voltages may be hazardous.§ When making measurements, keep your fingers behind the finger guards on the probe.§ Select the proper function and range for your measurement. To avoid damaging this device,

disconnect the test leads from test points before changing functions.§ CE requirement: According to standard, under the influence of R.F field the supplied test leads will

pick up induced noise. For a better shielding effect, short-twisted leads should be used.The standard of test requirement shows below:IEC 801-2: ESD(electro-static discharge).IEC 801-3: RFI ( Radio Frequency Interference).Condition: 27~500MHz, signal intensity is 3Volts per meter.IEC 801-4: EFT( electrical fast transient).EN 55011: EMI.

§ The meter is safety-certified in compliance with EN61010(IEC 1010-1, IEC 1010-2-031) InstallationCategory ΙΙ 300V Pollution Degree 2. In order to maintain its insulation properties, please be sure touse with the standard or equivalent test probes.

10.2 Service

If the instrument fails to operate, check battery, test leads, etc. and replace them if necessary. If theinstrument still does not work, double check operating procedure as described in this instruction manual.When servicing, use specified replacement parts only.

WARNING

TO AVOID ELECTRICAL SHOCK OR DAMAGE TO THE METER, DO NOT GET WATER INSIDE THE CASE. REMOVE THE TEST

LEADS AND ANY INPUT SIGNALS BEFORE OPENING THE CASE.


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10.3 External battery replacement

For output functions powered by a 12V (1.5V x 8) battery box, with NEDA1604, JIS006P,IEC6F22 carbon-zinc or alkaline battery. Replace battery. If there is still no output the signal press the OUTPUT buttonmomentarily verify that changes to . You can use the DC voltage function to test the battery.If the reading on the meter is lower than around 9.6 V, use the following procedures to replace the battery:

a) Remove the connection between the battery box and instrument.b) Take the battery from the leather pouch.c) Replace the batteries. Make sure the connect polarity is observe.

10.4 Inside battery replacement

The meter is powered by a single 9V battery inside, with NEDA1604, JIS006P,IEC6F22 carbon-zinc or

alkaline battery. Replace battery if the low battery sign ( )is displayed and flashes. Use the followingprocedures to replace the battery:

1. Use the rotary switch to turn the meter off. and disconnect the test leads from external equipment.2. Loosen 3 screws on bottom cover, pull up and remove the cover. See Figure 29.3. Replace the defective battery.4. Reverse the procedure to replace the bottom cover.

Figure 29. Inside battery replacement


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10.5 Fuse replacement

Referring to Figure 29 and 30, use the following procedure to examine or replace the fuses of the meter:

1. Use the rotary switch to turn the meter off. and disconnect the test leads from external equipment.2. Loosen 3 screws on bottom cover, pull up and remove the cover. See Figure 39.3. Lift the circuit board as shown in Figure 40.4. Remove the defective fuse by gently prying one end of the fuse loose and sliding the fuse out of the

fuse bracket.5. Install a new fuse of the same size and rating. Make sure the new fuse is centered in the fuse

holder.6. Ensure that the rotary switch in the case top and circuit board switch are in the OFF position.7. Then replace the circuit board and the bottom cover respectively.

Figure 30. Fuse replacement

Fuse rating and sizesPOSITION VOLTAGE RATE CURRENT RATE SIZE Type

Fuse1 250 V 630 mA 5x20 mm Quick actingFuse2 250 V 63 mA 5x20 mm Time-lag actingFuse3 250 V 630 mA 5x20 mm Time-lag acting

10.6 Cleaning

To clean the instrument, use a soft cloth dampened in a solution of mild detergent and water. Do not spraycleaner directly onto the instrument, since it may leak into the cabinet and cause damage.Do not use chemicals containing benzine, benzene, toluene, xylene, acetone or similar solvents.


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11 CERTIFICATES

11.1 Warranty terms

Each instrument is shipped with a Certificate of Warranty that indicates the validity conditions of thewarranty itself.Eurotron warrants its products against defects in materials and workmanship under normal use andservice for the period of one year from the date of purchase.Any misuse, abuse, or non Eurotron authorized alterations, modifications and/or repairs to Eurotronproducts will void the warranty. If you discover a defect, Eurotron will repair or replace the product,provided you return it during the warranty period, transportation prepaid, to an authorized Service Facility.This warranty applies to the original purchaser only.Please include a copy of the original invoice or a small service charge may be applied.Prior to returning the product for warranty consideration, call Eurotron Technical Support for a returnedmaterial authorization number and shipping instructions.


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APPENDIX


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A1 EMC Conformity

The instrument case, made in shock-resistant injection moulded ABS + polycarbonate has an internalmetal shild to fulfil the prevision of the directive 89/336/CEE Electromagnetic Compatibility.Follow the page with the EMC declaration of conformity


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Declaration of Conformity

We : Eurotron Italiana s.r.l.(Supplier's name)

V.le F.lli Casiraghi, 409/413 20099 Sesto S. Giovanni (MI) - Italy(Address)

declare under our sole responsability that the product :

Process Multimeter UniCal MMX2(Name and type)

Cat. 3420(Model)

to which this declaration relates is in conformity with thefollowing normative documents :

EN 50082-2 (3/95)IEC 1000-4-2 / IEC 1000-4-4 / IEC 1000-4-11ENV 50140 - ENV 50141 - ENV 50204

EN 55011(Title, number and date of issue of normative documents)

following the prevision of directive :

89/336/CEE Electromagnetic Compability (EMC)

eurotron

Sesto S. Giovanni, January 08th, 1998(Place and date of issue) (Signature of authorized person)

mm850272-01 unical mmx2

Documents

pulse width

adjustable

unical mmx2

duty cycle

easy reading

eurotron italiana

general performance

input impedance