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36 Pelco Manual C540M (6/98)
Appendix D. Keyboard-to-Keyboard Cabling Connections
TO IDENTIFY A CABLE TYPE, PHYSICALLY ORIENT THE
RJ-45 CONNECTORS AS DEPICTED IN THE DRAWINGS
TO THE LEFT. (SIDE BY SIDE, TAB SIDE DOWN). USE THE
“COLOR-RUN” OF THE WIRES TO DETERMINE CABLE
TYPE (AS INDICATED) AND USE THE INDICATED CABLES
FOR KEYBOARD CONNECTIONS.
REVERSE CABLE
BROWN
BROWN
REPRESENTS REVERSE OR
CROSS-WIRED
STRAIGHT CABLE
BROWN BROWN
REPRESENTS STRAIGHT OR
PARALLEL
**THE COM 3 PORT PIN-OUTS ARE NOT COMPAT-
IBLE WITH STRAIGHT OR CROSS-WIRED CABLE
CONFIGURATIONS. IF YOU WISH TO DOWNLOAD
VIA THE COM 3 PORTS, THEN A SPECIAL CABLE
MUST BE FABRICATED TO COMPLY WITH THE COM
3 PORT PIN-OUTS LISTED IN APPENDIX C, KEEPING
IN MIND THAT “TX OUT” GOES TO “RX IN” AND VICE
VERSA.
COMPARED
“COLOR
RUN” IS IN
OPPOSITE
DIRECTION.
COMPARED
“COLOR
RUN” IS IN
SAME
DIRECTION.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
KEYBOARD
1
COM 1
COM 2
COM 3
KEYBOARD
2
COM 1
COM 2
COM 3
POWER
PAK
POWER
PAK
COM 1
TO
COM 1
KEYBOARD
1
COM 1
COM 2
COM 3
KEYBOARD
2
COM 1
COM 2
COM 3
POWER
PAK
POWER
PAK
COM 2
TO
COM 2
KEYBOARD
1
COM 1
COM 2
COM 3
KEYBOARD
2
COM 1
COM 2
COM 3
POWER
PAK
POWER
PAK
COM 3
TO
COM 3
**
KEYBOARD
1
COM 1
COM 2
COM 3
KEYBOARD
2
COM 1
COM 2
COM 3
KEYBOARD
3
COM 1
COM 2
COM 3
SERCOM
PORT
SERCOM
PORT
SERCOM
PORT
POWER
PAK
POWER
PAK
POWER
PAK
SYSTEM-WIDE KEYBOARD CONFIGURATION
UPLOAD/DOWNLOAD