Connecting Differential Video Line Amplifier Units
3
Table 1: 123Vxl Differential Video Line Amplifier Features
# Feature
Function
1
12V DC
+12V DC connector for powering the unit
2
OUT 1
BNC Connector
Connects to a video acceptor
3
OUT 2
BNC Connector
Connects to a video acceptor
4
OUT 3
BNC Connector
Connects to a video acceptor
5
CV IN
BNC Connector
Connects to the video source
6
TERM Hi-Z / 75
Switch
Pushing in selects
75
, releasing selects
Hi-Z
1
7
LOOP
BNC Connector
For looping to increase output availability
2
8
ON LED
Illuminates when receiving power
9
GAIN
Trimmer
Adjusts
3
the output signal level for outputs 1, 2 and 3
10
EQ.
Trimmer
Adjusts
3
the cable compensation equalization level
5 Connecting Differential Video Line Amplifier Units
You can connect up to five
123Vxl
Differential Video Line Amplifier
units, to
provide up to 15 outputs, as Figure 2 illustrates.
To
connect up to five
123Vxl
Differential Video Line Amplifier
units:
1. Connect the video source to the
CV IN
BNC connector on the first unit.
2. Connect the
LOOP
BNC connector on each unit to the
CV IN
BNC
connector on the next unit in the line, respectively
4
.
3. Connect the
OUT 1
,
OUT 2
and
OUT 3
BNC connectors on each unit to
the appropriate video acceptors
5
, as required.
4. Release the TERM switch (selecting Hi-Z) on all units, except on the last
(fifth) unit. Push in the TERM switch on the last (fifth) unit (selecting
75 ).
1 For looping select Hi-Z
2 Connects to the CV IN connector on the next unit
3 Insert a screwdriver into the hole and carefully rotate it, to trim the level
4 Connect the LOOP BNC connector on the first unit to the CV IN BNC connector on the second unit. Connect the LOOP
BNC connector on the second unit to the CV IN BNC connector on the third unit. Connect the LOOP BNC connector on the
third unit to the CV IN BNC connector on the fourth unit. Connect the LOOP BNC connector on the fourth unit to the CV IN
BNC connector on the fifth unit. Leave the LOOP BNC connector on the fifth (last) unit unconnected
5 Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the first unit to the video acceptors 1, 2 and 3, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the second unit to the video acceptors 4, 5 and 6, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the third unit to the video acceptors 7, 8 and 9, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the fourth unit to the video acceptors 10, 11 and 12, respectively.
Connect the OUT 1, OUT 2 and OUT 3 BNC connectors on the fifth unit to the video acceptors 13, 14 and 15, respectively
