User's Manual

7-42 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10
620003-0 Rev. B
7.7.1 Alarm Source
Unison always acts an alarm source, no matter what type of equipment you are con-
necting to. Refer to Section 7.7.2 on page 7-45 if you want Unison to sense LGCell
contact closures or other external alarms.
Using MetroReach Focus to Monitor Unison
When you connect MetroReach Focus to Unison, the Unison Main Hub is the output
of the alarms (alarm source) and Focus is the input (alarm sense), as shown in the fol-
lowing figure. Focus supports only faults (major errors).
Figure 7-6 Connecting MetroReach to Unison
Unison Main Hub
RF OUT
DOWNLINK
RF IN
UPLINK
FIBER
UPLINK
DOWNLINK
ALARM
RS-232C
MetroReach
Focus
RFM
Alarm
Sense
Alarm
Source
Alarm
Source
5-port Alarm Daisy-Chain Cable
9-pin Adapter