Installation and Test
SCP-FCS717-042-03H
18
January 6, 2003
FCS-717 List 4B
3
Connect the INHIBIT line from one COT shelf in the system to the next COT shelf sharing the metallic
bypass pair when the bypass pair is shared between multiple systems in multiple shelves.
4
and
for each PG-Flex system in the cascade.
Figure 8.
Connecting the Metallic Bypass Pair
The INHIBIT line is used only when the metallic bypass pair is shared between two,
or more, systems installed in more than one shelf.
An FPI-729 PGTC interface unit or FAU-728 List 2 alarm unit must be installed in each
FCS-717 List 4B COT shelf where the INHIBIT line is used.
SYSTEM 2
T
OUT
T
IN
R
IN
S
INHIBIT
P25
EXT-ACO
20
12
16
3
GND
CKT
28
24
GND
CKT
RTN
BAT
GND
CKT
P23
BYPASS_1
TEST
R
R
OUT
P17
T
3
P24
FRAME
32
A B C
J1
GND
GND
CKT
SYSTEM 1
HDSL_1
R2
R1
P5
P13
T2
T1
J2
Metallic
Bypass
Pair
Inhibit