Connections; Table Bi; Table Bj; Table Bk. Fault Locate Switch S6 - AT&T System 85 Installation And Test

TABLE BH..Power Switch S2
SETTING
POWER SOURCE
SPAN 60 or 140 mA span
current
BATT —48 V dc
TABLE BI. Loopback Switch S3
SETTING
OPTION
LPBK
Loopback operation
NORM Normal operation
TABLE BJ. Loop -Up Timing Switch S5
SETTING
OPTION
5 sec
5 second loop -up
detect interval
10 sec 10 second loop-up
detect interval
TABLE BK. Fault Locate Switch S6
SETTING
OPTION
OPEN With fault locate
filter
CLOSED
Without fault locate
filter
Connections
All of the connections should be wire wrapped to a 56-pin connector at the rear of the shelf.
This is true for the rack-mounted shelf and the smaller wall-mounted unit used at the
remote location.
A block diagram of the Remote Group Interface using the Looping Office Repeater is shown
in Figure 108.
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