Installation Instructions
The diagram below shows the typical installation of the VAT-1001 and
VAR-1001 fiber optic video/audio transmission units. Both should be
connected as shown and a video signal applied to the transmitter. To
compensate for the unique fiber optic losses of your installation there
is a level adjustment on the VAR-1001. The receiver video Level
adjustment should then be set for a 1 Volt pp video output signal, or
for an acceptable picture. The range of the receiver level control is
adequate to allow the full 0-13dB optical path loss range to be
accommodated. The audio channels do not require any adjustments.
Indicator Lights
Indicator Lights
when
Pwr
Proper power is present.
Alrm
The loss of video alarm is activated and there is
no video present
Vat
Internal circuitry is OK.
Var
A fiber optic link is present
Video
A Video signal is being transmitted or received.
Power Terminal Block Connections
Pin Function
1
Alarm output for use with optional Alarm Sensing Unit
ALM-1000. No other connections should be made to this
terminal
2
+11 to 24 DC or AC Volts input
3
AC or DC return (Common to Housing)
Be certain to check all connections, settings and voltages before
applying
power
106117
Rev
G
Audio Removable Terminal Block Connections
Pin Function
1
Signal Channel 1 +
2
Signal Channel 1 --
3
Ground (common to housing)
4
Signal Channel 2 --
5
Signal Channel 2 +
The audio input and output are transformer coupled and may be used
in either a balanced or an unbalanced configuration.
Balanced input or output:
Connect audio to Pin 1 and 2. (4 & 5 for channel 2)
Pin 3 is then used as a shield or unconnected.
Unbalanced input or output:
Connect audio signal to Pin 1 (5 for channel 2).
Connect audio return (and/or shield) to Pin 2 (4 for channel 2).
Connect jump Pin 2 (4 for channel 2) to Pin 3 (ground).
In both cases be certain that the audio input level does not exceed 1-
Volt RMS (3 volts peak-to-peak) or distortion and/or clipping will
occur.
Alarm Switch
The
Alarm
is used to turn the video alarm function on and off. This is
utilized when the Alarm sensing unit, ALM-1000 is being utilized.
Note that when there is a loss of signal carrier, usually due to broken
fiber or excessive optical path loss, the Alarm indicator will light and
the Link indicator will go off. The alarm switch cannot disable the
function of the indicator lights.
VAT-1002-
VAR-1002-
Power
Alarm
Power
Alarm
Fiber Optic Cable
Video Input
Video Output
Power
Power
Level Adjust
Video
Alarm Switch
Video
Audio Input
Audio Output
Link
Link
Alarm Switch
Typical Fiber Optic CCTV System
Fiber Optic Cable
Camera
Monitor
ALM-1000
Alarm
Contacts
Audio
line-level
Mic(line level)
VAR-1000
VAT-1000
