rvs 8manual
DESCRIPTION
RVS 8ManualTRANSCRIPT
RVS-8 Eight Channel Repeater Voting System
Manual Version 1.0
LDG Electronics 1445 Parran Road, PO Box 48
St. Leonard MD 20685-2903 USA Phone: 410-586-2177
Fax: 410-586-8475 [email protected] www.ldgelectronics.com
Copyright © LDG Electronics 2006. All rights reserved.
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RVS-8 Eight Channel Repeater Voting System
Introduction 3 Specifications 3 Overview 4 Installation 6 Setup 7 Operation 9 Application Notes 11 Care and Maintenance 13 Technical Support 14 Warranty and Service 14 Firmware Upgrades 14 Feedback 14
3
Introduction Congratulations on selecting the RVS-8 voter. This system allows you to add up to eight satellite receivers to your repeater system. It selects the one with the best signal-to-noise ratio and channels the audio and Carrier Operated Relay (COR) output to your repeater input. A wide variety of options is available via the front-panel controls and display. You can even "cascade" up to eight of these units for a system of 64 satellite receivers. LDG pioneered the automatic, wide-range switched-L tuner in 1995. From its laboratories near the nation’s capitol, LDG continues to define the state of the art in this field with innovative automatic tuners and related products for every amateur need. Specifications
• 8 Channels (expandable) • True Signal-to-Noise Voting • Microprocessor Controlled • Software Upgradable • Menu Driven, 10 Menus • Programmable COR and Disable Inputs • Programmable Hysterisis • Digital S/N Meter • Frequency response 30 to 20,000 Hz • Crosstalk > 60db • Distortion < 1 db • Power requirement: 12 Volts DC @ 500 ma • Board Size: 6 x 9 inches • Rack Size: 1 Rack unit, 7 inch depth • Enclosure size: 19 x 7.0 x 1.25 (measured in inches)
IMPORTANT SAFETY WARNING Never install antennas or transmission lines over or nearpower lines. You can be seriously injured or killed if any partof the antenna, support or transmission line touches a powerline. Always follow this antenna safety rule: the distance tothe nearest power line should be at least twice the length ofthe longest antenna, transmission line or support dimension.
4
Overview Your RVS-8 repeater system is a quality, precision instrument that will give you many years of service; take a few minutes to get to know it. Your RVS-8 is designed to be mounted in a standard 19" rack. The front panel is integrated with the rack mount. Your RVS-8 comes fully assembled, tested and aligned, and is ready to install and use.
Front panel controls include:
• Power On/Off • Power indicator LED • COR operation LED • Menu button • Parameter selection button • Data input button
5
The LDC display shows current system status information, and menu options when selected.
On the rear panel are connections for audio and COR inputs from up to eight receivers, COR switching output, voted audio output, and DC power input. Other useful outputs are also provided; see Installation.
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Installation Your RVS-8 is intended for indoor use only; it is not water resistant. If you install it in a remote location, you must insure that it is protected from moisture and temperature extremes. 1. Connect the audio output from each of your receivers to the screw connections on the header
labeled "Audio In J5". Each audio input is relative to the ground connection on that header. 2. Connect the corresponding COR output from each receiver to the respective screw
connections on the header labeled "COR In J4". Be sure to correctly match the COR inputs to the audio inputs on J5; that is, COR 1 matches audio 1, etc.
3. If you wish, you can remotely disable receivers via the inputs on the header labeled "Disable
In J3". To remotely disable a receiver, set the corresponding contact on J3 to either a high or low voltage state, depending on how you set up that channel in the menu; see Setup. You can disable as many receivers in this manner as you wish.
4. The header labeled "Select Out" provides an output indicating which of the eight receivers is
voted. One of the eight pins on this header will be at +12vdc indicating the voted receiver. The other pins will be at zero volts. +12vdc at 10ma is also provided on this header. All voltages are relative to the ground connection on this header. You might use this output to drive an array of LEDs so you could see which receiver is voted from a distance. Use of these outputs is optional; you may simply leave them disconnected if you wish.
5. The main voter outputs are on the header labeled "Output". Audio output and its dedicated
ground are the rightmost two connectors on this header. COR output is the leftmost three, providing normally closed, normally open and common connections. The COR outputs are "dry" contact closures; no voltages are output on these connectors.
6. DC power input is via the coaxial connector labeled "Power". Connect this to a source of 12
volts DC capable of providing at least 500 ma, using the provided 2.5 by 5.5 mm coaxial plug. Best practice is a regulated DC power supply connected to the AC line through a high-quality surge protector.
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Setup Setup your RVS-8 via the front panel buttons and LDC display. Setup data is stored in non- volatile EEPROM, and remains intact when power is removed. Hysteresis The hysteresis level is the amount of signal-to-noise ratio improvement needed over the currently voted site for a new site to be voted. Press the Menu button until the present hysteresis value is displayed. Press the Data button to select the desired value. Available values are 0 - 8. You should adjust this to a higher value if you experience excessive switching between receivers. A higher value requires more improvement in the signal-to-noise ratio for switching to occur. The normal value should be 3 or 4.
Disabled Channels Press the Menu button until the presently disabled channels are displayed. To disable or enable a channel, press the Selection button to scroll across to the desired channel. Press the Data button to toggle between enabled and disabled. The channel is disabled when the channel number appears in the Disabled Channels display. This display also reflects channels disabled via hardware connected to J3. Channels disabled in software via this menu cannot be enabled via hardware, and vice versa. Be sure not to disable all channels. This would effectively turn off the repeater as no inputs would be passed through.
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Disable Active State You can choose whether a receiver is disabled by means of a high or low voltage state input to J3. This selection can be made for each channel; that is, you can set each channel to either high or low separately. Press the Menu button until the "Dis Active State" menu is displayed. Press the Selection button until the desired channel is displayed, then press the Data button to select high (HI) or low (LO). Active HI means your controller or other external device must produce a positive-going voltage (6.5 to 20 volts) when the channel is to be disabled, and a low-going voltage (0.0 to 4.5 volts) when the channel is to be enabled. Active LO means that your controller or other external device must provide a low-going voltage (0.0 to 4.5 volts) when the channel is to be disabled, and a high going voltage (6.5 to 20 volts) when the channel is to be enabled.
COR Active State You can choose whether a high or low voltage state indicates an active COR input on J4. This selection can be made for each channel; that is, you can set each to channel to either high or low separately. Press the Menu button until the "COR Active State" menu is displayed. Press the Selection button until the desired channel is displayed, then press the Data button to select high (HI) or low (LO). Active HI means that your receiver COR must produce a positive-going voltage (6.5 to 20 volts) when the squelch is open (receiving a signal) and a low-going voltage (0.0 to 4.5 volts) when the squelch is closed (no signal). Active LO means that your receiver COR must provide a low-going voltage (0.0 to 4.5 volts) when the squelch is open and a high-going voltage (6.5 to 20 volts) when the squelch is closed.
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Operation On power-up, the display shows a title screen and current firmware version for a few seconds, then the default screen: "Current Voted". The currently voted receiver is displayed. As the repeater operates, the red COR LED on the front panel will light when the repeater is activated. The Current Voted display continuously updates as the system switches from receiver to receiver.
Several other useful items of information are available on the LCD display. Press the Menu button to display the following: Current CORs: displays the CORs that are presently active, showing a received signal on that receiver.
Signal / Noise: displays the signal to noise ratio of each channel. Press the Selection button to view this information for each channel (receiver). The value displayed is between 0 and 255, with 255 representing the highest ratio (also the best signal).
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Most Voted: Displays the channel most often voted, out of the last 100 COR cycles. This count is reset when DC power is cycled.
Least Voted: Displays the channel least often voted, out of the last 100 COR cycles. This count is reset when DC power is cycled.
Hits per Chan: Displays the number of times each channel was activated out of the last 100 COR cycles. The value will be between 0 and 100. This count is reset when DC power is cycled. Press the Select button the view data for each channel.
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Application Notes The following diagram shows a basic setup with eight satellite receivers. Typically, one of the receivers is the "main" receiver, co-located with the transmitter. The other receivers are usually "link" receivers bringing audio from remote satellite receivers.
RVS-8
Receiver 1
Receiver 8
Audio
Audio
COR
CORJ5
J4
RepeaterTransmitter
Audio
COROutput
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Should the need arise, you can use up to 64 satellite receivers by "cascading" eight RVS-8 voters. Each of the eight voters can input eight receivers, for a total of 64. The outputs of these eight RVS-8 voters are then input to a ninth RVS-8 unit which provides final selection of audio and COR outputs to the repeater transmitter. Frankly, if you're using 64 satellite receivers, you've got our respect.
RepeaterTransmitter
RVS-8#1
Receiver 1
Receiver 8
RVS-8#1
RVS-8#1
Receiver 1
Receiver 8
RVS-8#8
Receiver 63
Receiver 64
RVS-8#8
RVS-8#8
Receiver 63
Receiver 64
RVS-8RVS-8
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Alignment The first step in alignment is to make sure that each channel is matched to the proper COR and Disable Active State. Test each input to make sure that when the COR becomes active on your receiver, the voter responds properly and shows that channel as having an active COR. The calibration process is fairly simple. Start with the eight audio pots and eight noise pots centered. Each channel will be calibrated in the same manner, so only the first channel will be discussed and the user can then calibrate the other channels as needed. An RF signal generator and oscilliscope will be useful in the alignment process, but you can be creative with other test equipment and achieve proper calibration. Start by transmitting an on-frequency signal of 1000 Hz at 3.0 KHz deviation to your first remote receiver. Be sure that the signal is full quieting. Place the scope on test point AUD1 and adjust the AUD1 pot for 1.0 volts peak to peak. Remove the test signal and open the squelch of the first remote receiver. Place the scope on test point Noise1 and adjust the Noise1 pot to read 3.5 volts. Repeat for channels 2 through 8, or for the number of channels used. The Audio Out pot is used to set the overall output level of the voter. Tips If you don’t have a signal generator, you can use a transceiver and press the touch tone pad to generate a tone signal. This can be used to get the voter adjustments close. If you have a difficult time getting the Noise adjustment down to 3.5, lower the AUD adjustment to 0.5 volts peak to peak. If you do this, make sure that all receivers are set to 0.5 volts. As long as all inputs are set to the same voltage level, you can lower the signal down to 0.2 volts peak to peak if needed. They type of audio used from the receivers can be just about any type as long as all of the receivers use the same audio. Audio types that are acceptable are line level and speaker audio. Also, it does not matter if the audio is de-emphasized or not as long as all of the receivers are the same. The biggest problem seen in getting the voter to work properly is a mis-match in the audio characteristics between the receivers. Many times, doing a frequency sweep with expose differences in the audio response. Since there are literally dozens of different receivers that you could use, there could be dozens of different audio responses possible. Usually the best way to get near identical audio responses is to use the same brand and model of the remote and link receiver. Care and Maintenance Your RVS-8 voter is maintenance-free. As with any modern electronic device, your RVS-8 can be damaged by water, temperature extremes, impact or static discharge.
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Technical Support We are happy to help you with your RVS-8. Telephone technical support is available at 410-586-2177 weekdays from 9 am to 5pm Eastern Time. Inquiries by Fax at 410-586-8475 are welcome, and prompt e-mail support is available at [email protected]. Warranty and Service Your RVS-8 is warranted against defects in parts or workmanship for two years from purchase. The warranty does not cover damage due to abuse or exceeding specifications. This warranty applies to the original purchaser only; it is not transferable. A copy of the receipt showing the purchaser’s name and the date of purchase must accompany units returned for warranty service. All returns must be shipped to us pre-paid; we will not accept units with postage due. A return form is provided on our web site for your convenience. If you need to return your RVS-8 to us for service, package it carefully, keeping in mind that we will re-use your packaging to return the unit to you. Download the return form from our web site ([email protected]), fill it out and return it with your voter. A self-addressed return-shipping label, while not required, will help insure speedy and accurate delivery of your repaired unit. Include a full description of the problem, along with your name, address and a phone number or e-mail address where we can reach you with any questions. Repairs average about 3 to 6 weeks. We will be glad to service your RVS-8 after the warranty period has ended. We will notify you of repair charges by phone or e-mail, and bill you after repairs are completed. Firmware Upgrades From time to time LDG may release upgraded firmware for the RVS-8, refining operation and adding features. Your RVS-8 is not field programmable; you will have to remove the present chip and replace it with the upgrade chip. Upgrades are expected to cost about $10-$20, and will be announced on our web site when available. Feedback If you have an idea to improve our software or hardware, please send us a description. If we incorporate your idea in the RVS-8, we'll send you a free upgrade as a “thank you”. We encourage everyone who uses the RVS-8 to contact us (card, letter or e-mail preferred) telling us how well it works for you. We are also always looking for photographs of our products in use; we frequently place such pictures on our web site (www.ldgelectronics.com).
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Date: 17-Oct-2005 Sheet of File: C:\Contracting\LDG\RVS-8\Voter.DDB Drawn By:
C61.01uf
+6+12+6
C600.1uf
C590.1uf
+12
K1
123456789
J4COR
123456789
J3DIS
X013X114
X215X312X41X55
X62X74
INH6A11B10C9
VEE7
X 3
VSS8 +12 16
U84051X013
X114X215X312
X41X55X62X74
INH6A11B10C9
VEE7
X 3
VSS8+12 16
U74051
10123456789
J6
123
JPR1
+12
C540.1uf
C500.1uf
+5
Q13 D1 2Q25 D2 4
Q37 D3 6Q49 D4 10Q511 D5 12Q613 D6 14
DA1DB15 +12 16
GND 8
U114503
Q13 D1 2Q25 D2 4Q37 D3 6Q49 D4 10Q511 D5 12Q613 D6 14
DA1DB15 +12 16
GND 8
U104503
Q13 D1 2Q25 D2 4Q37 D3 6Q49 D4 10Q511 D5 12Q613 D6 14
DA1DB15 +12 16
GND 8
U9
4503
569
11
478
10
211413
+12 3GND 12
U2LM339
579
11
468
10
211413
+12 3GND 12
U6LM339
SO2SI5SCK6CS1
VCC 8VSS 4WP 3
HOLD 7
U3X250XX
AS 4R/W 6
E 5
B0 42B1 41B2 40B3 39B4 38
B5 37B6 36B7 35
C0 9C1 10C2 11C3 12C4 13C5 14C6 15C7 16
A0
34A
133
A2
32
A3 31
A4 30A5 29A6 28A7 27
D2 22D3 23D4 24D5 25
E0 43E1 45E2 47E3 49E4 44E5 46E6 48
E7 50
VDD26
VSS1
EXTAL8
XTAL7
RESET17
D121 D020 VRL51
MODB2 MODA3 VRH52 IRQ19 XIRQ18
U1
68HC11D411D512D613D714ENAB6R/W5RS4+52CONT3
GND1
J8
+5
+5
X18mhz
C5110pf
+5
C530.1uf
+5
D11N4001
C570.1uf
C580.1uf
+12
+6
+5
+12
+12
+12
+5
12345
J2AUDIO/COR
+12
+12+5
C491.0UF
C5547uf
C5647uf
OUTSELCOUTSELBOUTSELA
2
COMMONN/ON/C
COROUT
RAWCOR1RAWCOR2RAWCOR3RAWCOR4RAWCOR5RAWCOR6RAWCOR7RAWCOR8
RAWDIS1RAWDIS2RAWDIS3RAWDIS4RAWDIS5RAWDIS6RAWDIS7RAWDIS8
OUTAUD1OUTAUD2OUTAUD3OUTAUD4OUTAUD5OUTAUD6OUTAUD7OUTAUD8
DATALCDWR
ENABLED7D6D5D4
RVS-8 Voter3.2
4AA3AV
SELASELBSELC
SOSISCKCS
CDSCOR
A/D0A/D1A/D2A/D3A/D4A/D5A/D6A/D7
OUTSELAOUTSELBOUTSELC
CONTRAST
RAWCOR1RAWCOR2RAWCOR3RAWCOR4RAWCOR5RAWCOR6
RAWCOR7RAWCOR8
RAWDIS1RAWDIS2RAWDIS3RAWDIS4
RAWDIS5RAWDIS6
RAWDIS7RAWDIS8
AUDOUT
COROUT
AUDOUT
MENUDATASELECT
C52 10pf
IRQS
MODB
MODB
IRQS
SELECT
MENU
DATA
1 23 45 67 89 10
J7
Front Panel
POWERIN
PWRGND 0
J1POWEROUT
POWERIN POWEROUT
OnOffLEDMenuSelect
CORLED
Data
Return
Return
Select
Data
Menu
CORLED
OnOffLED
Vin1
GN
D2
Vout 3
PAD
0
U5VoltReg
R1
470
R51M
R41K
R12470
R6
10K
R71k
R910K
R810K
VR17100K
VR18
100K
R41 10kR42 10kR43 10kR44 10kR45 10kR46 10kR47 10kR48 10k
R56
100k
R55
100k
R54
100k
R53
100k
R52
100k
R51
100k
R50
100k
R49
100k
R76 10kR77 10kR78 10kR79 10kR80 10kR81 10kR82 10kR83 10k
R10
510
0kR
104
100k
R10
310
0kR
102
100k
R10
110
0kR
100
100k
R99
100k
R98
100k
R33 15kR34 15kR35 15kR36 15kR37 15kR38 15kR39 15kR40 15k
R58
10k
R59
10k
R61
10k
R63
10k
R65
10k
R67
10k
R69
10k
R71
10k
R73
10k
R62
10kR
6410k
R66
10kR
6810k
R70
10kR
7210k
R74
10kR
7510k
R84
10kR85
10kR86
10kR87
10kR88
10kR89
10k
R11510k
R116
10k
BE
CQ1
2N3904-SOT23
D2 DIODE_1N4148
C200.01uf
+12 +5
GND+6
POWERIN
POWEROUT
RLY
TP19COROUT
TP1+12
TP2+6
TP20+5
+12
+6 +5
TP21
Audio Out
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108
U13CTL084
2
31
411
U13ATL084
9
108
U12CTL084
2
31
411
U12ATL084
12
1314
U13DTL084
+6+6
VR12100K
VR4100k
R2110k
R21.0M
R284.7k
C36.0047
C20.0047
C28.0047
C40.47uf
+12
C30.47uf
C27.0047
C19.0047 C35
.0047
R274.7k
R31.0M
R2210k
VR3100k
VR11100K
+6 +6 +12
5
67
U12BTL084
C10.47uf
C25.0047
C17.0047 C33
.0047
R254.7k
R111.0M
R2410k
VR1100k
VR9100K
+6 +6 +12
+12
C20.47uf
C26.0047
C18.0047 C34
.0047
R264.7k
R101.0M
R2310k
VR2100k
VR10100K
+6 +6
12
1314
U12DTL084
5
67
U13BTL084
3
21
84
U16A
3240
6
57
U16B
3240
3
21
84
U17A
3240
6
57
U17B3240
C91.0UF
C101.0UF
C111.0UF
C121.0UF
C4110UF
C4210UF
C4310UF
C4410UF
OUTAUD4
A/D3
AUDIN4
S/N Gate 4
AUDIN3
A/D2
OUTAUD3
S/N Gate 3
RVS-8 Voter3.2
3 4AA3AV
S/N Gate 1
AUDIN1
A/D0
OUTAUD1
S/N Gate 2
AUDIN2
A/D1
OUTAUD2
123456789
J5
Audio
AUDIN1AUDIN2AUDIN3AUDIN4AUDIN5AUDIN6AUDIN7AUDIN8
AUDIN1
AUDIN2
AUDIN3
AUDIN4
R93
10k
R92
10k
R91
10k
R90
10k
R1071k
R108
1k
R109
1k
R110
1k
R117
10k
R118
10k
R119
10k
R120
10k
R128100k
R127100k
R126100k
R125100k
1MH1
CON1
1MH2
CON1
1
MH3
CON1
1MH4
CON1
1MH5
CON1
1MH6
CON1
TP3Noise1
TP4Noise2
TP5Noise3
TP6Noise4
TP11AUD1
TP12AUD2
TP13AUD3
TP14AUD4
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67
U19B
3240
2
31
84
U19A3240
5
67
U18B
3240
2
31
84
U18A3240
9
108
U15C
TL084
2
31
411
U15ATL084
9
108
U14CTL084
2
31
411
U14ATL084
C80.47uf
C32.0047
C24.0047 C40
.0047
R324.7k
R131.0M
R1710k
VR8100k
VR16100K
+6 +6
12
1314
U15DTL084
+12
+6+6
VR13100K
VR5100k
R2010k
R161.0M
R294.7k
C37.0047
C21.0047
C29.0047
C50.47uf
+12
12
1314
U14DTL084
+6+6
VR14100K
VR6100k
R1910k
R151.0M
R304.7k
C38.0047
C22.0047
C30.0047
C60.47uf
+12
5
67
U15BTL084
C70.47uf
C31.0047
C23.0047 C39
.0047
R314.7k
R141.0M
R1810k
VR7100k
VR15100K
+6 +6
+12
5
67
U14BTL084
C131.0UF
C141.0UF
C151.0UF
C161.0UF
C4510UF
C4610UF
C4710UF
C4810UF
S/N Gate 8
AUDIN8
A/D7
OUTAUD8
RVS-8 Voter3.3
4 4AA3AV
S/N Gate 5OUTAUD5
A/D4
AUDIN5
S/N Gate 6OUTAUD6
A/D5
AUDIN6
S/N Gate 7
AUDIN7
A/D6
OUTAUD7
AUDIN5
AUDIN6
AUDIN7
AUDIN8
R97
10k
R96
10k
R95
10k
R94
10k
R114
1k
R1131k
R1121k
R1111k
R124
10k
R123
10k
R122
10k
R121
10k
R132100k
R131100k
R130100k
R129100k
TP7Noise5
TP8Noise6
TP9Noise7
TP10Noise8
TP15AUD5
TP16AUD6
TP17AUD7
TP18AUD8