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Revision 0.1 1 Copyright FlexRadio Systems, 2010 FlexRadio Systems FLEX-1500 Software Defined Radio Service Manual PRELIMINARY Author: Graham Haddock, KE9H

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Page 1: FLEX-1500 Service Manual - V 0.1

Revision 0.1 1 Copyright FlexRadio Systems, 2010

FlexRadio Systems

FLEX-1500

Software Defined Radio

Service Manual

PRELIMINARY

Author: Graham Haddock, KE9H

Page 2: FLEX-1500 Service Manual - V 0.1

Revision 0.1 2 Copyright FlexRadio Systems, 2010

Contents

Introduction …………………………………………...….. 3

Theory of Operation …………………………………….. 4

Alignment, Test and Calibration..…………………….. 11

Troubleshooting and Diagnostics ………………...….. 15

Assembly and Disassembly………………...………….. 16

Appendix “A” Schematic, PTRX (Transceiver) Board

Appendix “B” Schematic, PPA05 (RFPA) Board

Appendix “C” Boards, Top View.

Appendix “D” Test Points and Bus Access.

Appendix “E” Test Fixture.

Appendix “F” Bill of materials.

Page 3: FLEX-1500 Service Manual - V 0.1

Revision 0.1 3 Copyright FlexRadio Systems, 2010

Introduction The FLEX-1500™ QRP Software Defined Radio is both an entry level QRP radio and is also suited to be the ideal IF deck for VHF-Microwave operation. It provides all of the advantages of a software defined radio, including the sophisticated filters, panoramic spectrum displays and computer based Graphic interface characteristic of a Software defined Radio. This service manual assumes that the reader / service technician is familiar with the operation of the radio and powerSDR control software. If additional information is required on those topics, please refer to the Product Manual and Quick Start Guide.

Front View - FLEX-1500

Page 4: FLEX-1500 Service Manual - V 0.1

Revision 0.1 4 Copyright FlexRadio Systems, 2010

Theory of Operation Refer to the Block Diagrams on the two following pages. The Detailed Schematic is included in Appendix “A.” The unit is powered by +13.8 Volts DC, supplied via the 2.5 mm x 5.5 mm coaxial power connector on the rear of the unit. The unit has an internal 3.0 Ampere fuse, that will blow if the unit draws excessive current, or if the polarity of the power connected to the unit is reversed. The FLEX-1500 CPU (TAS1020B Streaming USB Controller) will communicate via USB for both control and streaming baseband data with the host CPU running the PowerSDR software. The CPU in the FLEX-1500 has control of all switching, signal routing, frequency generation via the DDS, FlexWire port, audio amplifier, as well as audio and baseband routing, CODEC clock generation, data conversion, gain and level controls for the radio. Communication between the Flex-1500 radio and the host computer is via a USB connection capable of USB 1.1 or higher level USB operation. The protocol is USB “Full Speed” or 12 Megabits per second data transfer rate.

Power Systems and Distribution The transceiver board requires a source of regulated +5 Volts at approximately 400 mA to function. +3.3 Volts is supplied to the board in general by a linear +3.3Volt regulator derived from the +5 Volt line. Additional +3.3 Volt and +1.8 Volts required to operate some of the integrated circuits is provided by point-of-load regulators in the vicinity of the IC. Overall power for the unit is derived from the +13.8 Volt input on the RFPA board. This 13.8 Volts directly supplies the relays and power amplifier transistors. It is also feeds two regulators. A 6 Volt regulator is switched on when transmitting, and off when receiving. This switched +6 Volt output is used to bias the RF power transistors. A separate +5 Volt regulator supplies power for the SPI decoder and relay driver IC on the RFPA board, as well as supplies all +5 Volt power to the transceiver board (PTRX) via the board to board interconnect system.

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Revision 0.1 5 Copyright FlexRadio Systems, 2010

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Revision 0.1 6 Copyright FlexRadio Systems, 2010

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Revision 0.1 7 Copyright FlexRadio Systems, 2010

Control Busses There are several control busses that interconnect the radio. A USB “Full Speed” bus interconnects the host computer running PowerSDR with the on-board CPU, the TAS1020B. Control from the TAS1020B CPU to the rest of the radio and external control is via an I2C bus sysem, and two each SPI busses. Firmware for the CPU is resident in a local (I2C) EEPROM on the transceiver board. Upon power up, the CPU will look for the presence of a properly programmed EEPROM, load this code, begin execution, and register with the host computer as a FLEX-1500 device. In the absence of the EEPROM, or lack of correctly identified firmware, the CPU will execute from internal ROM, and identify itself to the host computer as a “TI DFU device.” The FLEX-1500 CPU will communicate via USB for both control and streaming baseband data with the host CPU running the PowerSDR software. The CPU in the FLEX-1500 has control of all switching, signal routing, frequency generation via the DDS, FlexWire port, audio amplifier, as well as audio and baseband routing, CODEC clock generation, data conversion, gain and level controls for the radio. All of the above must be translated from local hardware and register controls to the Command and Data structures chosen for USB transport and interface in the host to the PowerSDR software.

I2C Bus  The I2C bus exists as three instances.

(1.) The computer bus (I2C-C), which contains the (master) CPU, the EEPROM containing program memory and calibration parameters, and the Bus Mux. (2.) The Internal I2C bus, (I2C-I) containing the two bus expanders and the CODEC chip. (3.) The External I2C bus (I2C-E) which is routed to the FlexWire DB-9 connector, and is only used in conjunction with an external FlexWire device.

The I2C Bus Mux selects whether the Computer I2C bus will be connected to the Internal or External I2C bus extension at any given time, as well as passing any interrupt requests upwards to the CPU. Since the EEPROM and the Bus Mux are on the computer bus, their addresses will appear in all I2C bus spaces.

I2C Bus Structure 

The I2C bus address values are provided according to the TI convention, where the address is an eight bit word, expressed as two hexadecimal characters. The least

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Revision 0.1 8 Copyright FlexRadio Systems, 2010

significant bit is actually the ~read/write bit, but is always presented as a “0” when the address is expressed. The TAS1020B is the I2C Bus Master and is always connected to the I2C Multiplex Chip and the EEPROM. When the Bus Multiplex is set to “Outside,” the I2C bus is routed to the appropriate pins on the FlexWire connector. When set to “Inside” the I2C bus is routed to the CODEC, and the two Bus Expanders, which convert I2C commands to many high/low outputs used to control the individual switches that control signal routing in the radio. The Audio Amplifier is controlled by general purpose outputs from the CODEC.

SPI Bus  There is also a SPI bus, used to control the DDS and the RFPA. It appears as two physical instances, a 3.3V version and a 5V version. The SPI is outbound control only, for both the AD9951 DDS and RF PA board. The AD9951 DDS is controlled via the 3.3 Volt SPI bus, directly from the CPU. The DDS will operate with either a 20 MHz or 38.4 MHz reference input. The TPIC6B595 Relay Driver is controlled by the 5 Volt SPI bus, and controls the following relays according to the band of operation or transmit/receive status. A “High” SPI control bit is the active state, which provides a LOW output from the relay driver to turn the relays ON. I.C. Name Bit Pin Name Function Initial

Drain0 0 4 15M Active = 17 or 15 Meter Band 0 = Inactive Drain1 1 5 160M Active = 160 Meter Band 0 = Inactive Drain2 2 6 20M Active = 30 or 20 Meter Band 0 = Inactive Drain3 3 7 6M Active = 6 Meter Band 0 = Inactive Drain4 4 14 80M Active = 80 Meter Band 0 = Inactive Drain5 5 15 10M Active = 12 or 10 Meter Band 0 = Inactive Drain6 6 16 XMIT HIGH = Transmit mode, LOW = Receive mode 0 = Receive Drain7 7 17 40M Active = 60 or 40 Meter Band 0 = Inactive

RF Signal Processing The incoming rf signals may be received via the antenna connector on the RFPA board, the transverter receive connector, or the transverter common connector. These signals are routed via the appropriate bandpass filter, then either directly to the preamp, or through a 20 dB pad to offset the gain of the preamp. The output of the preamp is fed to the QSD down-mixer, with an output of I and Q baseband signals in the range of 0 to 24 kHz.

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Revision 0.1 9 Copyright FlexRadio Systems, 2010

The QSD down-mixer is also supplied with a quadrature local oscillator signal which is derived from the DDS. The DDS operates at twice the desired local oscillator signal, passes though a 120 MHz low pass filter, into a Johnson Counter that both divides the DDS frequency by two, as well as generates the two quadrature local oscillator signals. In transmit, in a reverse manner, I-Q baseband signals from the CODEC in the baseband range of 0 to 24 kHz are supplied to the QSE, along with the quadrature local oscillator signals at the operating frequency, resulting in a direct QSE output on the final transmit frequency, which is routed via the bandpass filters to either the transverter output connector, or the input to the RFPA.

Baseband Processing In the receive direction, output I and Q signals from the QSD are passed through a set of OpAmps that have 18 dB of signal gain and 28 kHz low pass filters, then sent to the CODEC for digitization and transmission to the host computer. In transmit, analog I and Q signals output from the CODEC are filtered in a 26 kHz low pass filter to remove wideband digital noise, then sent to the QSE for up-mixing.

Communications In the receive configuration, digitized I and Q signals from the CODEC, representing the received pass band, are transferred using the I2S protocol to the Streaming USB controller. This controller then transfers this information via the USB protocol to the host computer. Processed and demodulated audio is returned via the USB protocol to the controller, then transferred to the CODEC via I2S protocol for conversion into analog audio signals. In transmit, configuration, digitized microphone audio signals from the CODEC are transferred using the I2S protocol to the Streaming USB controller. This controller then transfers this information via the USB protocol to the host computer. Processed transmit audio in a digital I and Q format is returned via the USB protocol to the controller, then transferred to the CODEC via I2S protocol for conversion into analog baseband signals to drive the QSE up-mixer. In the BITE (Built In Test Equipment) configuration, digitized I and Q signals from the CODEC, representing the received pass band, are transferred using the I2S protocol to the Streaming USB controller. This controller then transfers this information via the USB protocol to the host computer. Transmit test signals in a digital I and Q format are sent via the USB protocol to the controller, then transferred to the CODEC via I2S protocol for conversion into analog baseband signals to drive the QSE up-mixer.

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Revision 0.1 10 Copyright FlexRadio Systems, 2010

Audio Amplifier An audio amplifier is present, capable of driving stereo headphones, or stereo powered speakers, in the Stereo configuration, or a monophonic speaker directly, in the Mono configuration. In stereo, each of the two amplifiers are carrying the appropriate left or right channel information, and driving a low power amplifier suitable for headphones or high impedance loads. In the Mono configuration, the two incoming stereo signals are mixed together to form a single mono signal, then this is fed to one amplifier directly, and inverted and fed to the other amplifier to form an “H-Bridge” speaker amplifier. In this mode the speaker must be wired to bridge the amplifier output (Connect to tip and ring on stereo speaker plug) with no connection to ground.

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Revision 0.1 11 Copyright FlexRadio Systems, 2010

Alignment, Test and Calibration The only manual alignment required is setting the quiescent bias for the RF power transistors on the RFPA (PPA05 PCB.) All other alignment, test and calibration will occur using production test software built into PowerSDR.

Bias Adjustment FLEX-1500 RFPA (PPA05) Bias settings == Power Supply Setup: Adjust Power Supply to 13.8 Volts Output Voltage. Adjust Power Supply Current Limit to 2.5 Amperes. To do this, place a short across the output terminals of the power supply and adjust the Output Current knob to read 2.5 Amps on the current meter. == The Bias settings are normally set with the PA board out of the radio. It does not have to be connected to the TRX board, since it is all DC settings, and you do not want any RF drive present. With just the PA by itself on the workbench... Plug in +13.8 Volts into the normal power connector. To turn on the PA bias, ground the test point named "XMIT" at the lower right corner of the board, between K8 and K15. This will also activate relay K15, so you will hear a "click." To measure current in the driver transistor, there is a one Ohm shunt resistor between test points DM- and DM+. Put a voltmeter that will give good readings in the range of 50 milliVolts across these two test points and normally, you would adjust R8 for 50 milliVolts plus minus 5 milliVolts, corresponding to 50 milliAmps flowing through driver transistor Q1. (Hint: do not use long test probes that will go all the way through the PC board and touch the plate below. This will short the +13 Volts to ground, or destroy the metering resistor R2.)

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Revision 0.1 12 Copyright FlexRadio Systems, 2010

After adjusting bias on Q1, adjust bias on Q3. The procedure with a cold plate will be to set total power drain to 530 mA, plus minus 25 ma, by adjusting R10. You will see it drift some with temperature. With a hot base plate, it can rise as high a 580 mA.

Test and Calibration FLEX-1500 Transceiver Final Assembly, Test and Calibration. Required test equipment: Host computer with PowerSDR version 2.0 or later and appropriate drivers for the

FLEX-1500 and PowerMaster RF Powermeter installed. USB Signal Generator, FlexRadio Systems model FLEX-1599 PowerMaster RF Power Meter model ____ with serial interface to host computer. Loop-back test cable per accompanying diagram. Suitable power and RF BNC connection cables. Power Supply capable of supplying at least 2.5 Amperes at 13.8 Volts with current limit adjustable to 2.5 Amperes. == Power Supply Setup: Adjust Power Supply to 13.8 Volts Output Voltage. Adjust Power Supply Current Limit to 2.5 Amperes. To do this, place a short across the output terminals of the power supply and adjust the Output Current knob to read 2.5 Amps on the current meter. == Check for the presence of the latest version of the radio Firmware from the FlexRadio Systems SVN. If not a current version of the radio firmware, use “Firmware Updater” to install and update the latest version of firmware ==

Page 13: FLEX-1500 Service Manual - V 0.1

Revision 0.1 13 Copyright FlexRadio Systems, 2010

If there is any question as to whether the quiescent bias currents are properly set on the RFPA power transistors, they should be set prior to performing the PA calibration tests. == Plug the BNC-Coaxial cable from the PowerMaster watt meter into the BNC connector on the RFPA. Plug the USB cable from the computer into the USB connector on the front edge of the PTRX board. Plug the Powered speaker plug into the Speaker jack on the PTRX front edge. Plug the loop-back test cable into the FlexWire DB-9 connector on the rear card edge, and the Key and Mike connectors into the connectors on the front card edge. (Until full automatic test software is available, the speaker plug on the loop back test cable will be not be used.) Plug in the +13.8 Volt power connector into the power connector on the RFPA. == Turn on the power switch on the PTRX board. The Blue LED should light within two seconds. Open PowerSDR 2.0 Press "Start" Note that the program is running and a moving noise floor appears. Turn up the volume control to verify that noise comes out of the speakers, and the audio amplifier is operating. Return the volume control to "0". Bring up the production test screen by pressing Control-Shift-P. Check that the appropriate Com Port for the PowerMaster RF Power Meter is indicated. The fully automated sequence of tests may be started, or the individual tests run for diagnostic purposes. Press "Dot" Press "DASH" Press "PTT" Press "Mike"

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Revision 0.1 14 Copyright FlexRadio Systems, 2010

Press "Balance" Press "Attenuator" Press "Filter" Press "Level" (Additional tests will be added as additonal test software is completed.) If all tests are passed, as indicated by all green buttons, Press "PA" to perform full calibration of the RFPA on all bands. If this final test is passed, then radio level testing of the assembled radio is complete. Close Production Test window, Stop PowerSDR, close PowerSDR, turn off power Switch on PTRX, Remove cables from Radio Assembly. ==

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Revision 0.1 15 Copyright FlexRadio Systems, 2010

Troubleshooting and Diagnostics For bench testing the complete unit or RFPA as a stand alone board, it is recommended that a 13.8 Volt current limited bench supply is used, with the current limiter set to 2.5 Amperes.

If necessary to test a transceiver board as a stand alone board, a holding fixture with number 4 corner pins can be used to hold the board. A source of regulated +5.0 Volts, current limited at 600 mA may be applied in place of the power source jumper on Jxxx.

The results from the software tests built into PowerSDR should provide direction as to any failures in the radio.

The blue light in the center of the power-on switch is controlled by the CPU. This light will only light if the CPU has downloaded valid firmware from the EEPROM and completed initialization. If no blue light, check all voltages, including the output of the dedicated +3.3V regulator feeding the CPU digital power pins, which is separate from the general 3.3V regulator. If the blue light is present, but the unit will not enumerate on the USB host, check cables, connectors, and proper voltage output from the dedicated +3.3V regulator feeding the CPU digital power pins. None of the band pass filters in the transceiver board should have an insertion loss greater than 6 dB inside the band pass, so signal tracing with an RF signal generator and level meter or spectrum analyzer is very practical. Excessive filter loss is usually associated with an incorrect inductance value.

Page 16: FLEX-1500 Service Manual - V 0.1

Revision 0.1 16 Copyright FlexRadio Systems, 2010

Assembly and Disassembly

Required tools Number 1 Phillips and number 2 Phillips screwdrivers are needed, and a nut driver to remove the DB-9 retention nuts.

Disassembly Remove the two retention nuts on either side of the FlexWire DB-9 connector. Remove the four corner screws on both the front and back covers using the number 2 Phillips screwdriver. Observe the position of the upper PCB, it is in the fourth card slot. That is, three empty slots are above it. Observe the position of the two screw clearance holes on the bottom of the case. These holes are not equally spaced from the ends. The hole furtherest from the edge is on the rear end (end with all BNCs.) Remove the four bottom feet, using the number 1 Phillips screwdriver. Gently slide both cards toward the rear panel, the one with all the BNC's until the connected pair of cards are clear of the outer case. The two cards may be separated.

Re-assembly Reconnect the cards with the ten pin card to card connector. Orient the case so that the rear of the case (end with screw clearance hole spaced furthest from the edge) is upwards. Lower the upper board into the fourth board slot from the top of the housing. Once the upper board engages the side rails by an inch or two, then lower the lower board and heat spreader plate into the box and engage the board to board to board connection. The lower (PA board) should not engage any board slots, and will just roughly center in the bottom of the case. Gently slide in the pair of cards, until fully inside the new case. Check that the two transistor mounting screws in the heat spreader are visible / roughly centered in the screw clearance relief holes in the bottom of the case.

Page 17: FLEX-1500 Service Manual - V 0.1

Revision 0.1 17 Copyright FlexRadio Systems, 2010

Install the four feet using the number 1 Phillips screwdriver. Install the front and rear panels, using the black #6 pan head screws, with a number # 6 flat washer under each screw head, with the number 2 Phillips screwdriver. Install the two retention nuts on either side of the DB-9 connector.

Page 18: FLEX-1500 Service Manual - V 0.1

Revision 0.1 Copyright FlexRadio Systems, 2010

Appendix "A" Schematic, PTRX (Transceiver) Board

Page 19: FLEX-1500 Service Manual - V 0.1

10 M

Hz

SP

I BU

S

FLE

X-15

00 T

RX

BO

AR

DXV

-RX

ANT/

XV-T

X

To P

ABa

nd P

ass

Filte

r Ban

k

Bypa

ss

1.6

- 2.3

MH

z

5.2

- 7.7

MH

z

7.7

- 11.

4 M

Hz

11.4

- 17

.0 M

Hz

25.3

- 37

.6 M

Hz

37.6

- 54

.0 M

Hz

LPF

MH

z

AD99

51

DD

S

John

son

Div

by

2

LO-I

LO-Q

0 - 1

20 M

Hz

38.4

MH

z

Dou

bler

20 M

Hz

Mik

e In

USB

Audi

o O

ut

CO

DEC

USB

/

QSE

QSD

0 - 6

0 M

Hz

BIT

E

I2C

BU

S

Sw

itch

Con

trol

I2C

EXP

AND

ER

A->D

D->

A

120

SP

I BU

S

Key

In

Clo

cks

TLV3

20AI

C33

TAS1

020B

74LV

C74

DSN

65LV

DS3

4D

2 ea

. PC

A955

5

CVT

25-3

8.4

SN74

LVC

1G04

THS4

520

0.88

- 1.

6 M

Hz

0.49

- 0.

88 M

Hz

PTT

In

LED

Vers

ion

2010

APR

05

ADL5

531

4 to

1S

witc

h

+0 d

Bm T

X Le

vel

To P

A

17.0

- 25

.3 M

Hz

3.5

- 5.2

MH

z

2.3

- 3.5

MH

z

Leve

l S

hift

Gat

e

74H

CT0

8

26 k

Hz

LPF

EEPR

OM

Flex

Wire

74C

BT32

53

I2C

MU

XI2

C B

US

Syst

em B

lock

Dia

gram

Spkr

/Hea

dset

SPI

24C

128

CO

NTR

OL

PTT

/INT

InPT

T O

ut

Line

In/O

ut

I2S

I2C

BUS

PRE-

AMP

BUS

-20

dB

3 to

1S

witc

h

Page 20: FLEX-1500 Service Manual - V 0.1

Test 10 MHz Multiplier

GND

5.1kGND

GND.1

u.1

u

SD-73100

SD-73100

GND

5.1k

GND

GBLC03C

GBLC03C

GND

TC4-1T

GND

GND

.1u

GND

GND

10k

.1u

.1u

.1u+3.3V

10n 10n

GND

GN

D

GN

D

SSQ-105-01-F-D+12V

.1u

GN

D

+3.3V

619

3.32

k.1

u 619

619

3.32k 3.32k

GN

D

BAS70-00-V-GS08

BAS70-00-V-GS08

GND

1267

W

.1u

74AHC1G04DBV

1M100

0

1M

GND

+3.3V

Copyright FlexRadio Systems 2009, 2010

XVRX

ANT10MW TX/COM

FRONT END

2.) Ground1.) SPI5-LOAD

3.) SPI5-CLK

5.) SPI5-DATA4.) +12V

7.) +5

9.) RF10.) Ground

8.) +5

Flat Cable Assignments

6.) Ground

R2

C4

C6

J1G$1

J2G$1

R1

D1

D2

3216

4

T1

C1

R7

C16

X1

C13

C15

C7 C8

RFTP1

108642

P2

97531

C27

5

13

GN

D14

15

V2 3

11

V1 4

VD

D2

GN

D1

GN

D5

GN

D7

GN

D9

GN

D10

GN

D12

8

6

PAD

NC

16

IC1

PE42641

R3

R4

C3

R5

R6

R8 R9

D3

D4

L1

C5

2 4

IC2

35

IC2P

GN

DV

CC

R10

R72

R73

R87

SPI5-CLK/8

BITE/5

FRTENDA/11

FRTENDB/11

20MHZ/9

5V-PA/12

BPFI/2

SPI5-LOAD/8

SPI5-DATA/8

RF1

RF2

RF3

RF4

ANTRFC

10 MHz Input

10 MHz Doubler

Page 21: FLEX-1500 Service Manual - V 0.1

MaxiSpring

MaxiSpring

BAND 1

BAND 2

BAND 3

BAND 4

Delevan

Coilcraft CS1812

GND GND

GNDGND

GND GND

GN

D

GND

+3.3V

+3.3V

307n 307n 307n 307n

91p 130p 91p

51p 82p 82p 51p

GND GND GND

491n 491n 491n 491n

150p 200p 150p

75p 110p 110p 75p

GND GND GND

680n 680n 680n 680n110p 180p 180p 110p

220p 300p 220p

GND GND GND

1.2u_CS 1.2u_CS 1.2u_CS 1.2u_CS150p 220p 220p 150p

300p 390p 300p

GND GND GND

+3.3V

+3.3V

10n

10n

10n

10n

10n

10n

10n

10n

GND

GN

DG

ND

GN

D

GN

DG

ND

GN

DG

ND

+3.3V

+3.3V +3.3V

+3.3V

Copyright FlexRadio Systems 2009BANDPASS FILTER BANK - HIGH

11.4 - 17.0 MHz

37.6 - 56 MHz

25.3 - 37.6 MHz

17.0 - 25.3 MHz

Physical Position on PCB:

Band 4 - 11.4 - 17.0 MHzBand 8 - 2.3 - 3.5 MHzBand 2 - 25.3 - 37.6 MHzBand 5 - 7.7 - 11.4 MHzBand 9 - 1.6 - 2.3 MHzBand 1 - 37.6 - 56.0 MHzBand 12 - BypassBand 6 - 5.2 - 7.7 MHzBand 10 - 0.88 - 1.6 MHzBand 3 - 17.0 - 25.3 MHzBand 7 - 3.5 - 5.2 MHzBand 11 - 0.49 - 0.88 MHz

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K5PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K6PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K7PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K8PE4259

L2 L3 L4 L5

C25 C26 C27

C21 C22 C23 C24

L6 L7 L8 L9

C40 C41 C42

C36 C37 C38 C39

L10 L11 L12 L13C49 C50 C51 C52

C53 C54 C55

L14 L15 L16 L17C58 C59 C60 C61

C62 C63 C64

C33

C48

C57

C66

C31

C46

C56

C65

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K1PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K2 PE4259

51

36

4 2CTRL

VDDRFC

RF1

RF2GND

K3PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K4 PE4259

BPFI/1

BPFO/3

BAND04/11

BAND03/11

BAND01/11

BAND02/11

Page 22: FLEX-1500 Service Manual - V 0.1

BAND 5

BAND 6

BAND 7

BAND 8

Delevan 1812 Iron Core, Unshielded

Coilcraft FS

Coilcraft FS

Coilcraft FS

GND

GNDGND

GND GND

GND GND

220p1.8u 1.8u 1.8u 1.8u

330p 330p 220p

430p 620p 430p

GNDGNDGND

+3.3V +3.3V

+3.3V

GND

750p5.6u_FS 5.6u_FS 5.6u_FS 5.6u_FS

1.3n 1.3n 750p

1.3n 2n 1.3n

GNDGNDGND

360p2.4u_FS 2.4u_FS 2.4u_FS 2.4u_FS

560p 560p 360p

680p 1n 680p

GNDGNDGND

470p3.9u_FS 3.9u_FS 3.9u_FS 3.9u_FS

750p 750p 470p

910p 1.3n 910p

GNDGNDGND

+3.3V

+3.3V

+3.3V+3.3V

+3.3V

10n

10n

10n

10n

10n

10n

10n

10n

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

Copyright FlexRadio Systems 2009BANDPASS FILTER BANK - MIDDLE

7.7 - 11.4 MHz

5.2 - 7.7 MHz

3.5 - 5.2 MHz

2.3 - 3.5 MHz

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K9 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K10PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K11 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K12PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K13 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K14PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K15 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K16PE4259

C67L18 L19 L20 L21C68 C69 C70

C71 C72 C73

C94L30 L31 L32 L33C95 C96 C97

C98 C99 C100

C76L22 L23 L24 L25C77 C78 C79

C80 C81 C82

C85L26 L27 L28 L29C86 C87 C88

C89 C90 C91

C75

C84

C93

C10

2

C74

C83

C92

C10

1

BPFI/2 BPFO/4

BAND05/11

BAND06/11

BAND07/11

BAND08/11

Page 23: FLEX-1500 Service Manual - V 0.1

BAND 9

BAND 10

BAND 11

BAND 12 (BYPASS)

CoilCraft FS

CoilCraft FS

CoilCraft FS

Note: 5.1n = 1.8n +3.3n

GNDGND

GND

GND

GND

910p10u_FS 10u_FS 10u_FS 10u_FS

1.3n 1.3n 910p

2n 3n 2n

GNDGNDGNDGND

2.7n10u_FS 10u_FS 10u_FS 10u_FS

5.6n 5.6n 2.7n

3.3n 4.7n 3.3n

GNDGNDGNDGND

5.1n15u_FS 15u_FS 15u_FS 15u_FS

12n 12n 5.1n

6.8n 9.1n 6.8n

GNDGNDGND

GND

+3.3V +3.3V

+3.3V +3.3V

+3.3V +3.3V

+3.3V +3.3V

10n

10n

10n

10n

10n

10n

10n

10n

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

NP NP

Copyright FlexRadio Systems 2009BANDPASS FILTER BANK - LOW

1.6 - 2.3 MHz

0.88 - 1.6 MHz

0.49 - 0.88 MHz

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K17 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K18PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K19 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K20PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K21 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K22PE4259

51

3

6

4 2

CTRL

VDDRFC

RF1

RF2GND

K23 PE4259

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K24PE4259

C103L34 L35 L36 L37C104 C105 C106

C107 C108 C109

C112L38 L39 L40 L41C113 C114 C115

C116 C117 C118

C121L42 L43 L44 L45C122 C123 C124

C125 C126 C127

C11

1C

120

C12

9C

131

C11

0C

119

C12

8C

130

C9 C10

BPFI/3 BPFO/5

BAND09/11

BAND10/11

BAND11/11

BAND12/11

Page 24: FLEX-1500 Service Manual - V 0.1

1.0 V

1.25 V

20 dBAttn

74CBT3253PW

95.3

GND

.1u

GND

GNDGND

GND

2.87

k1.

20k

GND

10u

74CBT3253PW

+3.3V

+3.3V

+3.3V

.1u

TC1-1T

+5V

95.3

TC4-1T

GND

2.00

k1.

20k

GND

10u

+3.3V

ADL5531

.1u

.1u

GND10n

GND

10n

GND GND

+5V

GND

10n

GND

GND

0 +3.3V

3.30

1267

W 330u

61.9

61.9

240

10n

619

619

3.32

k

3.32

k

GND

GNDGND

.1u

6193.32k

+3.3V

GND

Copyright FlexRadio Systems 2009

SEQ: 0, 1, 3, 2

QSD / QSE

QSD

QSE

QSD QSE

1G 1B 2

1C3 31C2 41C1 51C0 61Y7

2Y9 2C0 10

2C1 11

2C2 12

2C3 13

A 14

2G 15

IC48

16G

ND

VC

C

IC4G$2

R11

C146R

13R

15

C138

1G 1B 2

1C3 31C2 41C1 51C0 61Y7

2Y9 2C0 10

2C1 11

2C2 12

2C3 13

A 14

2G 15

IC5

816

GN

DV

CC

IC5G$2

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K26PE4259

C147

3216

4

T3

R12

3216

4

T2

R18

R20 C144

2 7

CLIN 5

P$1

NC

1

NC

3

NC

4

NC

6

NC

8

PAD

IC3

C13

4

C13

5

C137

C132

C143

RFTP2

R74

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K25PE4259

R16

L46

C11

13G

ND

14

15

V23

11

V14

VD

D2

GN

D1

GN

D5

GN

D7

GN

D9

GN

D10

GN

D12

8

6

PAD

NC

16

IC27PE42641

R81

R82

R83

C18

R14

R19

R21

R84

C28

R85R86

~QSD/11

LO-I/10

LO-Q/10

~QSE/11

QSD-QP/6

QSD-IM/6

QSD-QM/6

QSD-IP/6

QSE-QP/6

QSE-IM/6

QSE-QM/6

QSE-IP/6

BITE/1

GEN/11

TXA/11

BPFO/4

TXB/11

ATN/11

RFIN RFOUTRF1

RF2

RF3

RF4

ANTRFC

Page 25: FLEX-1500 Service Manual - V 0.1

Remove GROUND under OpAmp

Narrow bandpass for QSE?

4.7n

4.7n

2.7n

1.60k

1.60k

1.60k

1.60k

2.7n

2.7n

120

120

120

120

2.7n

.1u

GND

.1u

GND.1u

.1u

.1u

.1u

330u

330u

330u

330u

10u

GND

10u

GND

12n

12n

915W

915W

915W

915W

THS

4520

THS

4520

100

100

100

100

1000

W10

00W

.15u .15u

.15u .15u

12.7 12.7

12.7 12.7

12.7 12.7

12.7 12.7

+3.3V

.1u

.1u

10u

10u47

u47

u47

u47

u

Copyright FlexRadio Systems 2009BASEBAND PROCESSING

From QSD To TLV320 Line 1 In

28 kHz LPF

To QSE From AIC33 HP Out

67 Hz HPF

2.4 Hz HPF 34 kHz LPF

C152

C164

C169

R31

R35

R29

R25

C157

C150

R32

R33

R26

R27

C162

C166

C154

C156

C151

C168

C163

C14

8C

158

C16

1C

171

C153

C165

C155

C167

L48

L50

L52

L53V

IN-

2

VO

UT+

3

VIN

+11

VO

UT-

10

VS- 13VS- 14VS- 15VS- 16

VS+5VS+6 VS+7VS+8

/PD

12

CM

9C

M4

NC

1

IC6

PAD PAD

VIN

-2

VO

UT+

3

VIN

+11

VO

UT-

10

VS- 13VS- 14VS- 15VS- 16

VS+5 VS+6VS+7 VS+8

/PD

12

CM

9C

M4

NC

1

IC7

PAD PAD

R24

R28

R30

R34

L49

L51

C173 C174

C177 C178

R36 R37

R38 R39

R40 R41

R42 R43

C32

C34

C35

C43

C17

2C

175

C17

6C

179

L1LP/7

L1LM/7

L1RM/7

L1RP/7

QSE-IM/5

QSE-IP/5

QSE-QM/5

QSE-QP/5

HPLM/7

HPRP/7

HPRM/7

HPLP/7

QSD-QM/5

QSD-QP/5

QSD-IM/5

QSD-IP/5

Page 26: FLEX-1500 Service Manual - V 0.1

TPA0233

1.8 V

3.3

V

3.3 V

3.3 V

1.8 V

TLV320AIC33IRGZ

10u

10u

10u

10u

GNDGND

10u

.1u

10u.1u 10u.1u

10u.1u

GND

330u

10n

GND

.1u10n 10n 10n

GND GND GND

650W

650W

GND

.1u 650W

650W

10n

10n

GND

GND

GND

+3.3V

GND

+5V

10k

10k

1u1u

GND

10u

+5V

GN

D

330u

1u1u

GNDGND

.1u

.1u

10u

TPS79318

10u

GND

+3.3V

1267W

1267W

1267W

GND

2.2k

+3.3

V

100

100

1u

.1u

511

511

47n

47n

FDV303

10k

+5V

Copyright FlexRadio Systems 2009CODEC

TO QSE

FROM QSD

HEADPHONESSPEAKER

MICROPHONE

BASEBAND

BASEBAND

FlexWire Line In/Out

AUDIO AMPLINE1LP3

LINE1LM4

LINE1RP5

LINE1RM6

LINE2LP7

LINE2LM8

LINE2RP9

LINE2RM10

MIC3L11

MIC3R14

MICBIAS13

MICDET12

HPLOUT 18

HPLCOM 19

HPROUT 23

HPRCOM 22

MONO_LOP 27

MONO_LOM 28

LEFT_LOP 29

LEFT_LOM 30

RIGHT_LOP 31

RIGHT_LOM 32

AVS

S_A

DC

15

MFP

348

MFP

247

MFP

146

MFP

045

SE

LEC

T43

SD

A2

SC

L1

/RE

SE

T33

GP

IO1

35

GP

IO2

34

IO/D

VS

S42

DR

VS

S21

DR

VS

S20

AVS

S_D

AC

26

AVD

D_A

DC

16

MC

LK37

BC

LK38

WC

LK39

DIN

40

DO

UT

41

IOV

DD

44

DV

DD

36

DR

VD

D24

DR

VD

D17

AVD

D_D

AC

25

IC9

PAD

PAD

C19

2C

193

C19

4C

196

C18

6C

191

C188C187 C190C189

C181C180

C200

C210

J4-1J4-2J4-3J4-4J4-5J4-6J4-7J4-8 C206

C207 C208 C209

L59

L60

C19

8

3

21

J3L57

L58

C203

C197

R44

R45

C19

9C

201

C19

5

RIN5

LIN9

BYP 4SD2

8

3

RO 6

LO 10

P$1

PAD

VDD

GND

ST/MO7 FILT 1

IC10

C202

C204C205

C182

C185

C184NR4 EN 3

GN

D2

IN 1OUT5

IC8

C183

L54

L55

L56

R46R67

R68

C2

C24

2

R17

R69C12

C14

Q2

R75

MCLK/8

BCLK/8

WCLK/8

DIN/8

DOUT/8

L1LP/6

L1LM/6

L1RP/6

L1RM/6

MPTT/8

MIC

_IN

I-SDA/11

I-SCL/11

HPLP/6

HPLM/6

HPRP/6

HPRM/6

~CRESET/8FWLO/12

FWLI/12

LIN

E_I

N

LIN

E_O

UT

Page 27: FLEX-1500 Service Manual - V 0.1

Review USB Power chokes

GND

1.47k

24.9

24.9

GND

47p 47p

GND GND

GND

10u

10u

+3.3V

6 MHz

24C128

33p

33p

100p

1n 3.09k

GND

GND

+3.3V

.1u

GN

D

GN

D

GND

7408PW

7408PW

7408PW

7408PW

74LVC1G04DBV

GND

.1u .1u

GND

+5V +3.3V

90W

.1u

GND

.1u .1u .1u

.1u

1267W

GND

+5V

.1u

GND

GND

120W

TPD4E0014DRLR

TPS79333-DBV

+5V

GND

.1u

GND

10.0

k

GND

47p

27p

27p

27p

27pGND

Copyright FlexRadio Systems 2009

STREAMING USB CONTROLLER

Level Translator

XTALO46

XTALI47

PLLFILI48

PLLFILO1

MCLKI3

PUR5

DP6

DM7

DVSS14

DVSS216

DVSS328

AVSS45

/MR

ES

ET

9

TES

T10

EXT

EN

11

/RS

TO12

P3.

013

P3.

114

P3.

2,/X

INT

15

P3.

317

P3.

418

P3.

519

NC

120

NC

222

AVDD 2DVDD3 33DVDD2 21DVDD1 8P1.7 31

P1.6 30P1.5 29P1.4 27P1.3 26P1.2 25P1.1 24P1.0 23

CS

CH

NE

32/C

RE

SE

T34

CS

YNC

35C

DAT

I36

CD

ATO

38C

SC

LK37

MC

LKO

139

MC

LKO

240

/RE

SE

T41

/VH

EN

42S

DA

43S

CL

44

IC15GND 4

D+ 3

D- 2

VCC 1

J5

R50

R51

R52

C217 C218

C222

C225

QG2

A01

A12

A23

VSS4 SDA 5SCL 6PTC 7VDD 8

IC11

C213

C214

C21

5C

216

R49

C21

1

1

23

IC13A

4

56

IC13B

9

108

IC13C

12

1311

IC13D

714

GN

DV

CC

IC13P

2 4IC14

35

GN

DV

CC

IC14PC226 C227

4

1 2

3L62

C223

C219 C220 C221

C224

L65

C212L6

3

IO11

IO22 IO4 5

IO3 4

VCC 6

GND3

IC12

NR4 EN 3

GN

D2

IN 1OUT5

IC28

C17

R89

C45

C47

C133C136

C139

MCLK/7

BCLK/7

DIN/7

DOUT/7

WCLK/7

5V-USB/12

C-SCL/11

C-SDA/11

SPI~CSDDS/9

SPI-CLK/9

SPI-DATA/9

SPI5-CLK/1

SPI5-DATA/1

~CRESET/7

~MRESET/12

DRESET/9

C~INT/11

~LED/12

~DOT/12

~DASH/12

FW-PTT-IN/11

MPTT/7

PTT-OUT/12

SPI5-LOAD/1

PTC/11

TAS1020B

Page 28: FLEX-1500 Service Manual - V 0.1

.1u.1u

1u

TPS79318 TPS79318

10u10u1u

.1u

GND GND

CVT25-38.4

1.00k

1.20k

GND

.1u

GNDGND

TC1-1T

AD9951EPGNDGND

GND

+3.3V

1u.1u

1k

3.9k

GND

+3.3V +3.3V

.1u

+3.3V

+3.3V

+3.3V

.1u.1u

.1u .1u .1u

.1u

GND

GNDGND

.1u

GNDG

ND

GN

D

0 0

.1u

.1u

68p

68p

68p

68p 68p

47p

330p

68p

GND

Copyright FlexRadio Systems 2009DDS

C235

C238

C237NR 4EN3

GN

D2

IN1 OUT 5

IC16

NR4 EN 3

GN

D2

IN 1OUT5

IC17

C236C228C230

C233

2

4

3

1QG1

R55

R53

C244

1

3

6

4

2

T4I/O_UPDATE1

SYNC_CLK45

REFCLK9

REFCLK8

CRYSTAL_OUT10

IOUT 21

IOUT 20

DAC_RSET 24

SYNC_IN 44

OSK 46

PWRDWNCTL 35

RESET36

CLKMODESELCT11

LOOP_FILTER12

DACBP 23

IOSYNC 37

SDO38

CS39

SCLK40

SDIO41

DVDD2

DVDD34

DGND3

DGND33

DGND47

DGND42

AVDD 4

AVDD 6

AVDD 13

AVDD 16

AVDD 18

AVDD 19

AVDD 25

AVDD 27

AVDD 29

AGND 5

AGND 7

AGND 14

AGND 15

AGND 17

AGND 22

AGND 26

AGND 28

AGND 30

AGND 31

AGND 32

IC18

DVDD_I/O43

DGND48

EXPEXP

C248C247

R54

R56

C246

51

3

6

42

CTRL

VDDRFC

RF1

RF2 GND

K27 PE4259

C232C231

C239 C240 C241

C23

4

C249

RFTP3 RFTP4

R76 R77

C19

C44

C14

0

C14

1

C145

C14

9

C159

C16

0

C14

2

C17

0

DDS-1.8V-DIGITAL DDS-1.8V-ANALOG

SPI-CLK/8

SPI-DATA/8

REF-SEL/11

20MHZ/1

SPI~CSDDS/8

DRESET/8

DDS/10OUTGND

VCC NC/TS

Page 29: FLEX-1500 Service Manual - V 0.1

Changed IC20 to SN65LVDS34D

Changed T5 to TC4-1T

.1u

GND

GND

74LVC74D

74LVC74D

GND

.1u

GND

GND GND GND GND

100n 120n 100n

15p 27p 27p 15p

SN65LVDS34D

+3.3V

15p 27p 27p 15p

GND GND GND GND

+3.3V

+3.3V

0

200

TC4-1T

24.9

24.9

68p

68p

Copyright FlexRadio Systems 2009LO QUADRATURE GENERATOR

120 MHz Low Pass Filter

Johnson Counter

C25

0

CLR1

D2

CLK3

PRE4 Q 5

Q 6

IC19A

CLR13

D12

CLK11

PRE10 Q 9

Q 8

IC19B

714

IC19P

GN

DV

CC

C259

L66 L67 L68C255 C256 C257 C258

1A8

1B7

2A6

2B5

1Y 2

2Y 3

GN

D4

VD

D1IC20

C251 C252 C253 C254

RFTP5

R78

R793

216

4

T5

R90

R91

C29

C30

DDS/9

LO-I/5

LO-Q/5

Page 30: FLEX-1500 Service Manual - V 0.1

PCA9555PW

PCA9555PW

+3.3V

+3.3V

GND

GND

GND

GND

.1u

.1u

GN

DG

ND

PCA9542A

+3.3V

.1u

GN

D

GND

2.2k

2.2k

2.2k

2.2k

2.2k

2.2k

+3.3V

2.2k

2.2k

2.2k

+3.3

V

Copyright FlexRadio Systems 2009FILTER AND SWITCH CONTROL

CPU I2C BUS

INTERNAL I2C BUS

EXTERNAL I2C BUS

E~INT(FlexWire)

SCL22 SDA23

A021

A12

A23

INT1

VSS 12

VDD 24IC22

I/O0.0 4

I/O0.1 5

I/O0.2 6

I/O0.3 7

I/O0.4 8

I/O0.5 9

I/O0.6 10

I/O0.7 11

I/O1.0 13

I/O1.1 14

I/O1.2 15

I/O1.3 16

I/O1.4 17

I/O1.5 18

I/O1.6 19

I/O1.7 20

SCL22 SDA23

A021

A12

A23

INT1

VSS 12

VDD 24IC23

I/O0.0 4

I/O0.1 5

I/O0.2 6

I/O0.3 7

I/O0.4 8

I/O0.5 9

I/O0.6 10

I/O0.7 11

I/O1.0 13

I/O1.1 14

I/O1.2 15

I/O1.3 16

I/O1.4 17

I/O1.5 18

I/O1.6 19

I/O1.7 20

C26

0C

262

A01

A12

A23

/INT04

SD05

SC06

VSS7 /INT1 8SD1 9SC1 10/INT 11SCL 12SDA 13VDD 14

IC21

C26

1

R57

R58

R59

R60

R61

R62

R47

R48

R70

C-SDA/12

C-SCL/12

C~INT/8

E-SDA/12

E-SCL/12I-SDA/7

I-SCL/7

BAND04/2

BAND08/3BAND02/2

BAND05/3

BAND09/4

BAND01/2BAND12/4

BAND06/3

BAND10/4

BAND07/3BAND11/4

~QSD/5~QSE/5

REF-SEL/9

TXA/5

GEN/5

FRTENDA/1FRTENDB/1

FW-PTT-IN/12

BAND03/2

TXB/5

ATN/5

PTC/8

Page 31: FLEX-1500 Service Manual - V 0.1

+3.3V+5V

GND GND

10u

1u

TPS76833QPWP

GND

GND

1k +3.3

V

MA03-1

GND

FDV303

GND

650W

650W

GND

10n

10n

GND2.2k 2.2k

+3.3V

GND

.1u

GND

+3.3V

10n

1n10n10n

GND

.1u

2.2k

+3.3V

GND

+3.3V

+5V

GND

GND

GND

GNDGND

TPD4E0014DRLR

.1u

+3.3V

GND

GND

+12V

10k

2N7002

3.90

k330u

GND

GND1.

00k

GND

Copyright FlexRadio Systems 2009

I/O AND POWERCopyright FlexRadio Systems 2009

I/O AND POWER

DB-9FLEXWIRE

5 Volt

Source

KEY

ON-OFF

I2C BUS

TEST POINTS

SPI BUS (3.3 V)

POWERGROUNDS

Select

15

SW1

C267

C266IN16

FB/NC 15EN5

OUT1 13

PG 16

OUT2 14IN27

GND1

GND2

GND3

GND 20

GND 19

GND 12

GND 11

GND10 PAD PADGND9

IC25

R65

J8-2J8-3J8-4J8-5J8-6J8-7J8-8J8-9

J8-G

J8-1

123

J6

Q3

3

21

J7

L70

L69

C264

C263

16

34

25

GN

DV

CC

IC24G$3

R63 R64

C276

C271

C270C269C268

C274

R66

TP2

TP3TP4

TP7 TP8

+5

+3.3

GND1

GND2

GND3

GND4

GND5GND6

IO11

IO22 IO4 5

IO3 4

VCC 6

GND3

IC26

C22

9

R71

Q4

R80

C20

GND8

R88

5V-USB/8

5V-PA/1

FWLO/7

E-SCL/11

E-SDA/11

~DASH/8

FW-PTT-IN/11

PTT-OUT/8

~MRESET/8

~LED/8

SPI-CLK/9

C-SDA/11

C-SCL/11

~DOT/8

SPI-DATA/9

SPI~CSDDS/9

FWLI/7

Page 32: FLEX-1500 Service Manual - V 0.1

TP7 TP3 TP2 GND

CLK CS DATA GND

NOTE: Jumper SCA to GND to remove EEPROM from address space

Copyright FlexRadio Systems 2009

PORT AND CONNECTOR DEFINITIONS

1.) N.C.2.) N.C.3.) Mike Bias (+5V)4.) Mike Ground5.) Mike In6.) Mike PTT In7.) Ground8.) N.C.

Mike Connector Assignments

1.) Ground2.) LINE INPUT3.) PTT OUT (New, was GND)4.) PTT IN (New, was interrupt)5.) Ground6.) I2C-SCL7.) I2C-SDA8.) +5 Volts Out (New, was +13V)9.) LINE OUT

FlexWire Assignments

SPI (DDS) BRIDGE ASSIGNMENTS

GND

MCLKBCLK

WCLKDIN

DOUT

CODEC BRIDGE ASSIGNMENTS

1.) USB / CPU - I2C MASTER ONLY2.) CODEC - 0011 00003.) EEPROM - 1010 00004.) I2C MUX - 1110 00005.) EXPANDER 0 - 0100 00006.) EXPANDER 1 - 0100 0010

I2C ADDRESS ASSIGNMENTSIndividual holes for 0.025 in. square pins Individual holes for 0.025 in. square pins2 x 3 pattern on 0.1 in. grid

1 x 3 pattern on 0.1 in. grid

1 x 4 pattern on 0.1 in. grid

I2C (INTERNAL COMPUTER) BRIDGE ASSIGNMENTS

2.) Ground1.) SPI5-LOAD

3.) SPI5-CLK

5.) SPI5-DATA4.) +12V

7.) +5

9.) RF10.) Ground

8.) +5

Flat Cable Assignments

6.) Ground

TP9 TP11

TP12

TP13

TP10

GNDGND

TP4SCA

TP8SCL

Page 33: FLEX-1500 Service Manual - V 0.1

Revision 0.1 Copyright FlexRadio Systems, 2010

Appendix "B" Schematic, PPA05 (RFPA) Board

Page 34: FLEX-1500 Service Manual - V 0.1

Low

Pas

s Fi

lter B

ank

160

M

80 M

60/4

0 M

30/2

0 M

17/1

5 M

12/1

0 M

6 M

5 W

att L

inea

r PA

Bia

s co

ntro

l, T/

R c

ontro

l

FLE

X-1

500

SP

I BU

S (5

V)

AN

T

TO F

LEX

1500

MA

IN B

OA

RD

13.8

V In

put

Filte

ring

Bia

sB

ias

Sw

itch

Filte

r Ban

k

RD

16H

HF1

RD

00H

VF1

Rel

ay S

witc

hed

Vers

ion

2010

MA

R 0

5

Bia

s C

ontro

l

TPIC

6B59

5S

PI R

elay

Driv

er

5 V

13.8

V

Reg

.

6 V

Reg

.

Rel

ay

DC

Pow

er

Sw

itch

6 V

Adj

Adj

Page 35: FLEX-1500 Service Manual - V 0.1

GN

D

GN

DSD-7

3100

RD

00H

HS1

TX2S

A-12

V

101 10

n

GN

D

GN

D

GN

D1

+12V

+12V

49.9

49.9

XFM

R_0

.5BI

NO

C

+6V

GN

D

2k

2k

GBL

C03

C

10.0k

+5V

1.8k 3.24k

10.0

k

GN

DG

ND

GN

DG

ND

1k

GN

D

GN

D

.1u

.1u

1u

.1u

10.0k

GN

D

.1u

GN

D

10n

.1u

240p

GN

D

GND

1267

W

GN

D

GN

D

GND

1uBAS70

GN

D

1267

W

.1u

470u

100u

GN

DG

ND

GN

D

10n

10n

GN

D

+12V

/1

160W

3.24

k

GN

D

2.00

k.1u 10n

10u

.1u

1u

.1u

1u

1u

.1u

GN

D

0

NP

NP

NP

GN

D

Cop

yrig

ht F

lexR

adio

Sys

tem

s 20

09

ANT

RF

PO

WE

R A

MP

LIFI

ERJ1

G$1

D SG

Q1

D SG

Q3G

$1

121

K15

3 54

10 89

123

54

T1

R1

R3

C20

R2

R5

R7

51

3

6

42

K16PE4259

CTRL

VDDRFC

RF1

RF2 GNDT3

13

2 R8

13

2R10

D1

R11

R13 R14

R15

R19

C47

C48

C50

C51

R20

C53

C54

C55 C56

L16

C60D3

L20

C61

+12V

DM+ DM-

C62

C63

C21

C64L1

7

R4

R6C52 C95

C96

C97

C98

C99

C10

0

C101

C10

2

R9

R17

J3

XMIT

/4

XMIT

/4

RF-

I/O/4

LPF-

IN/2

LPF-

OU

T/2

RD

16H

HF1

~ 2.

6 V

~ 4.

9 V

Page 36: FLEX-1500 Service Manual - V 0.1

Phys

ical

ord

er o

n bo

ard

is: 10

M80

M17

/15

M16

0 M

30/2

0 M

6 M

60/4

0 M

All c

oils

this

pag

e ar

e

Coi

lCra

ft M

axiS

prin

g

TX2S

A-12

VTX

2SA-

12V

TX2S

A-12

VTX

2SA-

12V

TX2S

A-12

VTX

2SA-

12V

TX2S

A-12

VTX

2SA-

12V

18p

68p

68p

82p

180p

75p

120p

220p

82p

150p

220p

180p

82p

12p

15p

12p

39p

22p

56p

39p

200p

150p

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

D

GN

DG

ND

GN

D

GN

DG

ND

GN

D

+12V

+12V

+12V

+12V

+12V

+12V

+12V

+12V

130n

169n

307n

246n

380n

307n

538n

307n

307n

36p

GN

D

10n 10n 10n 10n

10n 10n 10n 10n

GND GND GND GND

GNDGNDGNDGND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

169n

3.6p

24p

GN

D

Cop

yrig

ht F

lexR

adio

Sys

tem

s 20

09

HIG

H F

RE

QU

EN

CY

LPF

BA

NK

121

K1

3

54

10

89

121

K2

3

54

10

89

121

K3

3

54

10

89

121

K4

3

54

10

89

121

K5

3

54

10

89

121

K6

3

54

10

89

121

K7

3

54

10

89

121

K8

3

54

10

89

C1

C2

C3

C22

C23

C24

C25

C26

C27

C28

C29

C30

C31

C32

C33

C34

C35

C36

C37

C38

C39

C40

L7L8

L9L1

0

L11

L12

L13

L14

L15

C45

C65 C66 C67 C68

C69 C70 C71 C72C79 C80 C81 C82

C83 C84 C85 C86

L21

C19

C49

6M/4

15M

/4

20M

/4

LPF-IN-A

LPF-

IN-A

/3

LPF-

IN/1

LPF-

OU

T/1

LPF-OUT-A

LPF-

OU

T-A/

3

10M

/4

6 M

eter

s

12/1

0 M

eter

s

17/1

5 M

eter

s

30/2

0 M

eter

s

Page 37: FLEX-1500 Service Manual - V 0.1

Phys

ical

ord

er o

n bo

ard

is: 10

M80

M17

/15

M16

0 M

30/2

0 M

6 M

60/4

0 M

All C

oils

this

pag

e ar

e

Coi

lCra

ft 18

12 C

S Se

ries

TX2S

A-12

VTX

2SA-

12V

TX2S

A-12

VTX

2SA-

12V

TX2S

A-12

VTX

2SA-

12V

1.5u

1.2u

2.2u

1.8u

10u

8.2u

330p

300p

300p

39p

120p

91p

270p

330p

910p

330p

150p

470p

1.2n

2.2n

1n

GN

D

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

D

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

D

+12V

+12V

+12V

+12V

+12V

+12V

300p

GN

D

10n 10n 10n

10n 10n 10n

GND GND GND

GNDGNDGND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

.1u

GND

10u

8.2u

Cop

yrig

ht F

lexR

adio

Sys

tem

s 20

09

LOW

FR

EQ

UE

NC

Y LP

F B

AN

K

121

K9

3

54

10

89

121

K10

3

54

10

89

121

K11

3

54

10

89

121

K12

3

54

10

89

121

K13

3

54

10

89

121

K14

3

54

10

89

L1L2

L3L4

L5L6

C4

C5

C6

C7

C8

C9

C10

C11

C12

C13

C14

C15

C16

C17

C18

C46

C73 C74 C75

C76 C77 C78C87 C88 C89

C90 C91 C92

L22

L23

40M

/4

80M

/4

160M

/4

LPF-

IN-A

/2LP

F-O

UT-

A/2

60/4

0 M

eter

s

80 M

eter

s

160

Met

ers

Page 38: FLEX-1500 Service Manual - V 0.1

TPIC

6B59

5

+5V

+12V

GN

D

GN

D

+5V

+6V

GN

DG

ND

GN

D

GN

DG

ND.1u

.1u

1u

1u

GN

D

.1u

+5V

GN

D

NTR

1P02

T1

1SS4

00T1

G

4.7k

GN

D

+12V

160W

160W

.1u

.1u

.1u

GN

DG

ND

GN

D

GN

D

GND

10

KLD

X-02

02

MC

78T0

5

M05

X2JT

AG

+12V .1

u

GN

D

+12V

/1

S1A GN

D

Cop

yrig

ht F

lexR

adio

Sys

tem

s 20

09

INTE

RC

ON

NE

CT

AN

D P

OW

ER

L78L

06_D

Switc

hed

6 Vo

lts

MIN

I AT

OFU

SE

+13.

6 Vo

ltsIN

PUT

Test

Poi

nts Te

st P

oint

s

IC1

2.) G

roun

d1.

) SPI

5-LO

AD

3.) S

PI5-

CLK

5.) S

PI5-

DAT

A4.

) +12

V

7.) +

5

9.) R

F10

.) G

roun

d

8.) +

5

Flat

Cab

le A

ssig

nmen

ts

6.) G

roun

d

D0

4

D1

5

D2

6

D3

7

D4

14

D5

15

D6

16

D7

17

~G9

RC

K12

~SR

CLR

8

SRC

K13

SER

IN3

SER

OU

T18

192

20

1

10

11

U1

8 4

2367

51

U2

C41

C42

C43

C44

C94

Q4

D2

R12

L18

L19

C57

C58

C59

DAT

A

LOAD

CLK

GN

D

+5V

+6V

XMIT

GN

D1

GN

D2

GN

D3

GN

D4

R16

1 3 2

J2

VI1

2

VO3

GN

D

F1

108642P1

97531

C93

D4

6M/2

10M

/2

15M

/2

20M

/2

80M

/3

XMIT

/1

160M

/3

40M

/3

SPI5-DATA

SPI5-LOAD

SPI5-CLK

RF-

I/O/1

VC

C

GN

D

NC

NC

GN

DG

ND

Vin

Vout

GN

DN

CN

C

Add

DIO

DE

Page 39: FLEX-1500 Service Manual - V 0.1

Revision 0.1 Copyright FlexRadio Systems, 2010

Appendix "C" PC Board Component View

Page 40: FLEX-1500 Service Manual - V 0.1

Flex

Rad

io S

yste

ms

Cop

r. 20

10

++

++

1

Page 41: FLEX-1500 Service Manual - V 0.1

12

3

12

3FlexRadio Systems Copr. 2010

Page 42: FLEX-1500 Service Manual - V 0.1

Revision 0.1 Copyright FlexRadio Systems, 2010

Appendix "D" Test Points

Page 43: FLEX-1500 Service Manual - V 0.1

Flex

Rad

io S

yste

ms

Cop

r. 20

10

++

++

1

ghaddock
Oval
ghaddock
Oval
ghaddock
Oval
ghaddock
Oval
ghaddock
Oval
ghaddock
Line
ghaddock
Text Box
3.3 Volts
ghaddock
Line
ghaddock
Text Box
5.0 Volts
ghaddock
Line
ghaddock
Text Box
SPI Bus (3.3 V)
ghaddock
Text Box
I2C Bus
ghaddock
Line
ghaddock
Text Box
I2S Bus
ghaddock
Line
ghaddock
Text Box
1.8 Volts
ghaddock
Line
ghaddock
Line
ghaddock
Text Box
3.3 Volts (CPU Only)
ghaddock
Line
ghaddock
Text Box
TEST POINTS
Page 44: FLEX-1500 Service Manual - V 0.1

12

3

12

3FlexRadio Systems Copr. 2010

ghaddock
Oval
ghaddock
Oval
ghaddock
Text Box
SPI Bus (5 Volt)
ghaddock
Line
ghaddock
Text Box
Driver current metering
ghaddock
Line
ghaddock
Oval
ghaddock
Oval
ghaddock
Text Box
Driver Bias Adjust
ghaddock
Text Box
PA Bias Adjust
ghaddock
Line
ghaddock
Line
ghaddock
Oval
ghaddock
Text Box
"XMIT" Test Point
ghaddock
Line
ghaddock
Oval
ghaddock
Text Box
+5Volts
ghaddock
Line
ghaddock
Oval
ghaddock
Oval
ghaddock
Text Box
+6 Volts (Keyed)
ghaddock
Line
ghaddock
Text Box
+12 Volts
ghaddock
Line
Page 45: FLEX-1500 Service Manual - V 0.1

Revision 0.1 Copyright FlexRadio Systems, 2010

Appendix "E" Test Fixture

Page 46: FLEX-1500 Service Manual - V 0.1

1k 1k

FLE

X-1

500

TES

T FI

XTU

RE

NO

TES:

1. F

lexW

ire L

ine-

Out

driv

es M

icro

phon

e In

2. S

peak

er/P

hone

s dr

ive

Flex

Wire

Lin

e-In

3. P

TT-O

UT

from

Fle

xWire

driv

es F

W-P

TT-IN

, MP

TT, D

OT,

& D

AS

H

R1

R2

PTT

-OU

T

PTT

-IN

GN

D

GN

D

AUD

IO L

INE-

IN

AUD

IO L

INE-

OU

T

I2C

-SC

L

I2C

-SD

A

+12

VO

LTS

1 2 3 4 5 6 7 8 9

N.C

.

N.C

.

N.C

.

FLEX

WIR

E

DB-

9 C

ON

NEC

TOR

TIP

TIP

RIN

G

RIN

G

SLEE

VE

SLEE

VE

PHO

NES

MIC

RO

PHO

NE

-- R

J45

KEY

N.C

.1 2 3 4 5 6 7 8

N.C

.

N.C

.

GN

D

GN

D

+5V

MIK

E

MIK

E PT

T

N.C

.

N.C

.

N.C

.

N.C

.

N.C

.

N.C

.

Whi

te

Whi

te

Red

Red

Red

Shie

ld

Shie

ld

Aud

io A

nd S

witc

hing

Tes

t Cab

le

Ora

nge

Whi

te o

f Blu

e

Page 47: FLEX-1500 Service Manual - V 0.1

FLE

X-1

500

TES

T FI

XTU

RE

POW

ERD

UM

MY

LOA

DM

ASTE

R

NO

TES:

1. D

DS

Sig

Gen

driv

es 1

0 M

Hz

inpu

t at 0

dB

m

2. D

DS

Sig

Gen

driv

es X

VR

X, X

VTX

/C a

t -70

dB

m th

roug

h sp

litte

r

3. P

ower

Mas

ter v

erifi

es R

F po

wer

out

put

USB

CO

NTR

OLL

ED

SIG

NAL

GEN

ERAT

OR

10 M

Hz

XVR

X

XVTX

/C

ANT

10 M

Hz

RF

Con

nect

ions

FLE

X-1

500

UN

DER

TEST

XVTX

/C

XVR

X

BNC

to B

NC

Cab

le

BNC

to B

NC

Cab

le

BNC

to B

NC

Cab

le

BNC

to B

NC

Cab

le

USB

to H

ost C

ompu

ter

USB

to H

ost C

ompu

ter

USB

to H

ost C

ompu

ter

Page 48: FLEX-1500 Service Manual - V 0.1

FLE

X-1

500

TES

T FI

XTU

RE

Boa

rd to

Boa

rd J

umpe

r Cab

le

RFP

A E

ndTR

X E

nd

1

12

2

3

34

4

5

56

6

7

78

8

9

910

10

SPI5

-LO

AD

GN

D

GN

D

GN

D

SPI5

-CLK

SPI5

-DAT

A

+12

Volts

RF

- 50

Ohm

Coa

x

+5 V

olts

+5 V

olts

GN

D

BLAC

K

BLAC

K

RED

GR

EEN

BLU

E

WH

ITE

OR

ANG

E

OR

ANG

E

ALL

FE

MA

LE P

INS

ALL

MA

LE P

INS

CO

NN

EC

TS T

O B

OTT

OM

OF

TRX

BO

AR

DC

ON

NEC

TS T

O T

OP

OF

RFP

A B

OA

RD

Page 49: FLEX-1500 Service Manual - V 0.1

Revision 0.1 Copyright FlexRadio Systems, 2010

Appendix "F" Bill of Materials