5
DIGITAL VIDEO AND BIDIRECTIONAL DATA SYSTEM
DATA IN pins on the data equipment, and the DATA OUT
pins on the data equipment to the DATA IN pins on the fiber
equipment.
Built-In Termination
The V732 features a built-in termination for RS-422,
RS-485, Manchester and Biphase installations. Connect a
jumper as described in Tables 5 through 8.
Video Cable Connection
Connect the video source cable to the input BNC jack on
the V732T transmitter. Connect monitor equipment to the
output BNC jack on the V732R receiver.
Vicon suggests that Belden number 9259 or equivalent
coaxial cable should be used.
Fiber Optic Cable Connection
Most cable manufacturers identify the individual fibers in
the cable. Select appropriately terminated fiber and mark
both ends with unique identification label (e.g., for cable no.
03, fiber no. 08) to ensure that the fiber connected to the
near end is the same one that is connected to the far end.
The proper optical connection links the transmitter's OUT
port to the receiver's IN port.
1. Wipe the inside of the port’s sleeve with a lint-free pipe
cleaner moistened with reagent-grade isopropyl alco-
hol. Blow dry with dry air.
2. Clean the connector using a lint-free cloth dampened
with alcohol to thoroughly wipe the side and end of the
ferrule. Blow the ferrule dry with dry air. Visually inspect
the ferrule for lint.
3. Fasten the fiber optic cable to the port.
Power Connections
Standalone modules may be powered either by 24 VAC or
by 12-16 VDC. Connect input power according to the label
on the module.
Rack modules’ power connections are made automatically
when the card is installed. To supply power to the rack,
connect the rack power supply to an AC outlet and set the
power switch to ON.
OPERATION
V732 links operate automatically once installed. To execute
the test mode, follow the instructions below. For an expla-
nation of LED color codes, see page 6 and Tables 13 and
14.
TEST MODE
The test mode allows the end user to verify the operation of
the copper receiver/driver circuit in a V732, as well as the
fiber connection from one V732 to another. Placing the
transmitter in test mode with test patterns enabled causes
a proprietary video ramp test signal to be transmitted over
the fiber to the receiver. This allows the fiber optic video
path to be tested without a video source.
Using the test mode is simple:
1. On the V732T to be tested, set the DATA SELECT
switch to position F (TX TEST MODE). At this end only,
wire the connector as shown in Table 10.
2.
At the receiving (or opposite) end, set the V732R
DATA SELECT switch to position E (RX TEST MODE).
In the test mode, the transmitting unit (position F) should
behave as follows:
1. ENABLED LED is RED, indicating that a valid data for-
DATA TRANSLATION TABLE
TABLE 11: DATA TRANSLATIONS
Translation
TX
Switch
Setting
RX
Switch
Setting
Comment
TTL
Æ
RS-232, 3 wire
3
1
Signal level conversion.
RS-232, 3 wire
Æ
TTL
1
3
Signal level conversion.
TTL
Æ
RS-422
3
4
Single Ended to Differential Conversion.
RS-422
Æ
TTL
4
3
Differential to Single Ended Conversion.
RS-232, 3 wire
Æ
RS-422
1
4
Single Ended to Differential Conversion.
RS-422
Æ
RS-232, 3 wire
4
1
Differential to Single Ended Conversion.
RS-232, 5 wire
Æ
RS-485
2
7 - A
RS-232 Handshaking bit is used to indicate tri-state.
RS-485
Æ
RS-232, 5 wire
7 – A
2
Tri-state detection circuitry activates handshaking bit.
