Specifications

16 Pelco Manual C1920M-D (4/03)
1
2
3
45
6
7
8
VCR
AUX
MAIN
SPOT
SVHS
OUT IN
SVHS
IN COM OUT
NNH
OC
C
S
ALARMS
12345678 91011 14151612 13
VCR
AUX
MAIN
SPOT
SVHS
OUT IN
SVHS
IN COM OUT
NNH
OC
C
S
ALARMS
12345678 91011 14151612 13
TO COM IN, STRAIGHT CABLE (SUPPLIED WITH KBD4000)
COM OUT FROM MUX 1, FLIPPED CABLE
(SUPPLIED WITH CM9760-CDU-T)
COM OUT FROM MUX 1 TO COM IN
OF THE CM9760-CDU-T
RJ-45 WALL BLOCK (NOT SUPPLIED, ORDERED
SEPARATELY AS PART# CON12J008Z03G0Z)
TYPICAL OF 15
TWISTED PAIR
(NOT SUPPLIED)
TX -
TX +
TO COM IN, STRAIGHT CABLE
(SUPPLIED WITH KBD4000)
MULTIPLEXER 1
KBD4000
CM9760-CDU-T
MULTIPLEXER 2
3
4
2
1
O
N
O
N
12345678
12345678
110-240V 50/60 Hz
110-240V 50/60 Hz
Figure 12. Star Configuration of Multiplexers
1. Connect the KBD4000/KBD40002 to the COM IN port of multiplexer 1 using a straight
cable.
2. Connect the COM OUT port of multiplexer 1 to the COM IN port of the CM9760-CDU-T
using a flipped cable.
3. Connect TX+ and TX- from the CM9760-CDU-T to pin 1 and pin 2 (respectively) on
the RJ-45 wall block.
4. Connect the RJ-45 wall block to the COM IN port of multiplexer 2 using a straight cable.
5. Repeat steps 3 and 4 for connecting additional multiplexers to outputs 2-15 on the
CM9760-CDU-T. Each multiplexer requires its own wall block.
6B
STAR CONFIGURATION OF MULTIPLEXERS
The CM9760-CDU-T can be used as a distribution unit for a star configuration of Genex
Series multiplexers. Refer to Figure 12.
6A
SINGLE KEYBOARD
This installation is for a single keyboard plugged into a Genex multiplexer.
Refer to Figure 2 in the
Applications section for an overview of a typical application.
1. Remove the DIP switch cover plate on the back of the keyboard. Set the DIP switches
(refer to the keyboard manual). Replace the plate.
2. Plug the supplied 25-foot (7.6 m) cable into the back of the KBD4000/KBD4002
keyboard and into COM IN on the back of the multiplexer. Refer to Figure 11.
3. If you are going to daisy chain multiplexers (16 maximum), use the 6-foot (1.8 m) data
cables supplied with the multiplexer (refer to bottom portion of Figure 14). Connect a
cable from the first multiplexer’s COM OUT port to the second multiplexer’s COM IN
port, then connect the second multiplexer’s COM OUT port to the third multiplexer’s
COM IN port. Continue to unit 16 if necessary.