CHAPTER 2 INSTALLATION
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NWA-008855-001 Rev.1.0
avch2001.fm
Example of MDF Cross Connection for CS (BS21/BS21A)
NOTE 1: RJ-45 Modular plug is highly recommended.
Keep all wiring straight to the plug and perform all reverses at the cross connect for future
changes.
NOTE 2: Confirm that the electric potential between TA/TB and RA/RB (feed polarity) is normal before
connecting CS to modular plug.
TA/TB minus
RA/RB plus
TERMINAL
NUMBER
COLOR
TERMINAL
NUMBER
FUNCTION POLARITY
CSI
TERMINAL
TERMINAL
EQUIPMENT
CSI SIGNAL FEED
1 blue a Not used Not used
2 orange b Not used Not used
3 black c Transmission Reception + – RA
4 red d Reception Transmission + – TA
5 green e Reception Transmission – + TB
6 yellow f Transmission Reception – + RB
7 brown g Not used Not used
8 slate h Not used Not used
1
2
3
4
5
6
7
8
(8)
(1)
Term in a l
number
Front view Side view
CONNECTION OF LEGACY CS
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