Installation Manual

Release 3.3, Revision A 1/99
10 WAVEXpress/BTS Installation and Commissioning Guide
The impedance level of the card may be chosen by configuring the DIP switch according Figure 1-7 which provides
the T1 DIP switch settings for both Port A and Port B given the length of a shielded twisted pair cable. Refer to Figure
1-5 for T1 DIP switch location and pin identification.
NOTE
☛
The T1 card DIP switch is set according to DSX cable length or line build out. The
proper DIP switch settings should be identified during the initial system installation .
Table 1-7:
T1 dip switch settings
Port A
Switch Setting
1-2-3-4
Port B
Switch Setting
5-6-7-8
DSX-1 Cable Distance
Feet (Meters)
CSU Line
Build-Out
O-C-C-C O-C-C-C 0-133 (0- N/A
O-O-C-C O-O-C-C 133-266 N/A
O-C-O-C O-C-O-C 266-399 N/A
O-O-O-C O-O-O-C 399-533 N/A
O-C-C-O O-C-C-O 533-655 N/A
O-O-C-O O-O-C-O N/A 0dB
O-C-O-O O-C-O-O N/A -7.5dB
O-O-O-O O-O-O-O N/A -15dB
C-O-X-X C-O-X-X N/A -22.5dB
O = Open, C = Closed, X = Either