Motorola VSWR Service Manual Supplement page 29

VM alarm connections
Introduction
There are two methods for connecting the alarm outputs from the VM to the BTS alarm
system. The method chosen depends on the user's preference and the number of spare
alarm inputs available at the BTS.
Refer to the appropriate section of the M-Cell 6 Service Manual for information on wiring
alarm sensors to the PIX connector on the BTS.
Individually
wired VM alarms
Each VM unit can be individually wired to a separate external BTS (PIX) alarm, as shown
in Figure 1-5.
Serial linked VM
alarm
The alarm outputs from all VMs can be wired together serially and presented as a single
summary BTS (PIX) alarm, as shown in Figure 1-6.
5th Feb 99
VM #1
Figure 1-5 Separate VM alarms
VM #1
Figure 1-6 VM summary alarm
Service Manual Supplement: VSWR Monitor for M-Cell 6
68P02900W86-O
VM alarm connections
VM #2
ALARM ALARM ALARM
#1 #2 #3
VM #2
SUMMARY
ALARM
VM #3
VM #3
1–5