Service manual

RECEIVER MULTIPLEXER MODULE (RMM)
4-2
March 2000
Part No. 001-3139-502
4.4 SWITCH SETTINGS
4.5 ALIGNMENT
NOTE: If the RMM is set for Digital Operation, align-
ment is not required.
4.5.1 RMM ANALOG FSK OPERATION
1. Adjust R27 for -12 dBm at TP100.
4.5.2 RMM FINAL ALIGNMENT
1. Adjust R27 for -12 dBm (±2 dBm) at TP100 for
Leased Lines (LL).
2. Adjust R27 for -28 dBm (±2 dBm) at TP100 for T1
links.
NOTE: The absolute level for Leased Lines with
0 dBm maximum input would be -12 dBm. The abso-
lute level for T1 Link with -16 dBm maximum input
would be -28 dBm.
Figure 4-2 RMM PINOUT
NOTE: RMM output comes out of the Repeater con-
nector on pins 14 and 15.
Table 4-2 RMM SWITCH SETTINGS
Switch Sect. Description
S1 1
2
3
4
Off Not used on RMM
Off
Off
Off
S2 1-2
3-4
On -RMM output (enabled)
Off
S3 1
2
3
4
Off Not used on RMM
Off
Off
Off
S4 1
2
2
3
4
Off - RMM Mux
On - 1200 baud FSK (Normal)
Off - 9600 baud RS-232
Off Not used on RMM
Off Not used on RMM
S100 1
2
3
4
Off-Test, On-Normal
Off-Test, On-Normal
Off-Test, On-Normal
Off-Test, On-Normal