INSTALLATION AND OPERATION MANUAL
ValueLine
FVT/FVR812
8-CHANNEL DIGITALLY ENCODED VIDEO
+ 2 BI-DIRECTIONAL DATA CHANNELS
+ 1 BI-DIRECTIONAL CONTACT CLOSURE
The FVT/FVR812(M)(S)1 Series transmits eight (8) channels of video
utilizing state of the art digital encoding and decoding for high-quality video
transmission, along with two (2) channels of bi-directional data and one (1)
bi-directional contact closure over one single mode or multimode optical fiber.
This equipment is environmentally hardened and suitable for use in
unconditioned roadside or out-of plant installations.
The FVT/FVR812 is compatible with NTSC, PAL and SECAM video transmission
protocols and supports bi-directional RS232, 422 and 485 (2 & 4 Wire) data.
See Figure 4 on Page 3 for data selection.
See Figure 6 on Page 5 for contact switch positions.
Bi-Color LED indicators are provided to indicate the status of the system, video
and data. See Figure 7 on Page 5 for LED indication explanations.
These units may be directly plugged into the ComNet Rack (Part C1) or they
can operate as standalone modules. See Figure A on Page 6 for mounting
instructions.
See Figures 1 – 7 for complete installation details. No additional parts or
power supplies are required.
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INSTALLATION AND OPERATION MANUAL FVT/FVR812
FIGURE 1 – FVT/FVR812 TRANSMITTER AND RECEIVER
MULTIMODE OR SINGLE MODE
OPTICAL FIBER
BLACK
BLACK WITH WHITE STRIPE
FIGURE 2 – FVT812 TRANSMITTER
REAR PANEL REAR PANELFRONT PANEL FRONT PANEL
FIGURE 3 – FVR812 RECEIVER
NOTE: Remove Electrical Connector for Rack Mount Units
TECH SUPPORT: 1.888.678.9427
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INSTALLATION AND OPERATION MANUAL FVT/FVR812
FIGURE 4 – DATA SWITCH POSITIONS
The mode for each data channel is configured using a pair switches on the front panel of the unit.
1) RS232 2) RS422, Bi-Phase or
Manchester
Switch
3) RS485 2-Wire,
1) RS232
DIN (–)
DOUT (–)
GND
1 2
Sensornet
1 2
2) RS422,
Bi-Phase,
Manchester
DIN (+)
DIN (–)
DOUT (+)
DOUT (–)
GND
1 2
4) RS485 4-Wire
1 2
3) RS485 2-Wire,
Sensornet
DIN (+)
DIN (–)
GND
4) RS485 4-Wire
DIN (+)
DIN (–)
DOUT (+)
DOUT (–)
GND
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Termination Note
A 120 ohm termination resistor is applied to the differential inputs when
TERM is wired directly to DIN – (see diagram below).
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INSTALLATION AND OPERATION MANUAL FVT/FVR812
FIGURE 5 – DATA CONNECTIONS
See Page 3 for Switch Settings
RS-232
RS-422
Bi-phase or
Manchester
2-Wire
RS-485,
Sensornet
Customer
Equipment
Data Transmit
Data Receive
Signal Ground
Data Out (+)
Data Out (-)
Data In (+)
Data In (-)
Data In (+)
Data In (-)
Data (A)
Data (B)
FVT812
DIN(-)
DOUT(-)
GND
DIN(+)
DIN(-)
DOUT(+)
DOUT(-)
DOUT(+)
DOUT(-)
DIN(+)
DIN(-)
FVR812
DOUT(-)
DIN(-)
GND
DOUT(+)
DOUT(-)
DIN(+)
DIN(-)
DIN(+)
DIN(-)
DIN(+)
DIN(-)
Customer
Equipment
Data Receive
Data Transmit
Signal Ground
Data In (+)
Data In (-)
Data Out (+)
Data Out (-)
Data Out (+)
Data Out (-)
Data (A)
Data (B)
Data Out (A)
4-Wire
RS-485
Data Out (B)
Data In (A)
Data In (B)
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DIN(+)
DIN(-)
DOUT(+)
DOUT(-)
DOUT(+)
DOUT(-)
DIN(+)
DIN(-)
Data In (A)
Data In (B)
Data Out (A)
Data Out (B)
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INSTALLATION AND OPERATION MANUAL FVT/FVR812
FIGURE 6 – CONTACT SWITCH POSITIONS
The four CONTACT switches on the front of the unit set the operating mode of the
CONTACT OUT terminal pair.
It can either function as an alarm to indicate fault conditions, or it can function as a
contact closure to indicate the state of the CONTACT IN terminal pair on the rear of
the unit at the other end of the fiber.
1234
ON OFF OFF OFF Closed when optical Port has established link.
Open when Optical Port has lost link.
ON ON ON OFF Closed when Optical Port has established link and all video signals are present.
Open when Optical Port has lost Link, or if a Video signal is lost.
ON ON ON ON Contact Closure mode.
State based on CONTACT IN at other end of fiber link.
FIGURE 7 – LED INDICATORS
LINK VIDEO (1 – 8) DATA (1 – 2) POWER
GREEN
RED
OFF
Communication link has been
established over optical fiber
Communication link has not been
established
Not powered up correctly – – Unit powered down
Active video signal present
on the BNC connector.
No video signal No data signal –
Active data signal
present
Unit powered up
TECH SUPPORT: 1.888.678.9427
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MECHANICAL INSTALLATION INSTRUCTIONS
INSTALLATION CONSIDERATIONS
This fiber-optic link is supplied as a Standalone/Rack module. Units
should be installed in dry locations protected from extremes of
temperature and humidity.
C1-US, C1-EU, C1-AU OR C1-CH CARD CAGE RACKS
CAUTION: Although the units are hot-swappable and may be installed
without turning power off to the rack, ComNet recommends that
the power supply be turned off and that the rack power supply
is disconnected from any power source. Note: Remove electrical
connector before installing in card cage rack.
1. Make sure that the card is oriented right side up, and slide it into
the card guides in the rack until the edge connector at the back
of the card seats in the corresponding slot in the rack’s connector
panel. Seating may require thumb pressure on the top and bottom
of the card’s front panel.
CAUTION: Take care not to press on any of the LEDs.
2. Tighten the two thumb screws on the card until the front panel of
the card is seated against the front of the rack.
WARNING: Unit is to be used with a Listed Class 2 or LPS power supply rated
9-12 VDC @ 1A.
FIGURE A
Dimensions are for a standard ComNet™ three slot module
.156 [3.96 mm]
.313 [7.95 mm]
IMPORTANT SAFEGUARDS:
A) Elevated Operating Ambient - If installed in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment may
be greater than room ambient. Therefore, consideration should be given to
installing the equipment in an environment compatible with the maximum
ambient temperature (Tma) specified by the manufacturer.
B) Reduced Air Flow - Installation of the equipment in a rack should be such
that the amount of air flow required for safe operation of the equipment is
not compromised.
3 CORPORATE DRIVE | DANBURY, CT 068120 | USA
T: 203.796.5300 | F: 203.796.5303 | TECH SUPPORT: 1.888.678.9427 | INFO@COMNET.NET
8 TURNBERRY PARK ROAD | GILDERSOME | MORLEY | LEEDS, UK LS27 7LE
T: +44 (0)113 307 6400 | F: +44 (0)113 253 7462 | INFO-EUROPE@COMNET.NET
© 2010 Communications Networks Corporation. All Rights Reserved. “ComNet” and the “ComNet Logo” are registered trademarks of Communication Networks, LLC.
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