User guide
VIDEO PORT
8
7
6
5
4
3
2
1
-
+
-
+
-
+
-
+
Vid 4
Vid 4
Vid 3
Vid 1
Vid 1
Vid 3
Vid 2
Vid 2
12345678
568B
2
14
3
IF USING CHM22 CARDS
When using a CHM22 card the video for each camera is provided out the front of the card on BNC jacks.
The decoded video can be fed into other equipment as needed. Control data for a PTZ can be connected to the
2 pin jack on the rear of the CX254.
IF USING CXM22 CARDS
When using a CXM22 card the video from each of the four camera runs is routed to a single RJ45 jack
on the rear panel of the CX254 unit. Each card has its own RJ45 jack on the rear panel. Using a standard RJ45
cable you can then route the video signals on the copper backbone of the facility. Refer to the VIDEO PORT
chart below for pin assignments. Control data for a PTZ can be connected using the 2 pin jack on the rear of
the CX452.
Video Ports in back of CX254
Card Slots in front of CX254
Slot 1 Slot 2 Slot 3 Slot 4 Slot 5
CAMERA PORT
8
7
6
5
4
3
2
1
+
-
+
+
-
-
-
+
Power
Power
Power
Data
Data
Power
Video
Video
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568B
2
14
3
Camera Port Wire Chart
Step 5) At the Camera End
At the camera end there are several models of Balun Combiner units you can use. The particular model
you choose will depend on your installation. For the connection of the Balun Combiner unit refer to the manual
for your unit.
Technical Support
For additional help with problems please call NITEK Technical Assistance at (800) 528-4343. Hours are from
8am to 5pm Central Standard Time, Monday through Friday. We are always ready to help.
Video Port Wire Chart
120 / 240 VAC
50/60Hz
600 Watts Max
5 A 250V
RISK OF FIRE -
REPLACE FUSE
AS MARKED
CAUTION
Slot 5
Video
Port
Slot 4
Video
Port
Slot 1
Video
Port
Slot 2
Video
Port
Slot 3
Video
Port
CONTROL
DATA
+
-
Front Ports
Total Output
280 Watts Max
COMMERCIAL
CCTV PRODUCT
21UP
E240043
MADE IN USA
Model CX254
NITEK
R
RoHS
COMPLANT