Nortel DMS-100 Series Maintenance Manual page 38

1-22 OPM maintenance summary
Figure 9 OPM grounding network (NT8X01AC OPM-640/NT8X01BC OPM-256)
Cabinet
GND
Master ground bar
(MGB)
297-8361-550 Standard 04.02 December 2004
Logic/dc
GND bay 1
OPM principal
(earth) GND
Protector
block
GND
Cabinet
GND
Outside
plant
cables (4)
Frame GND
bay 0
Cabinet
GND Internal ground bar
(IGB)
Frame GND
bay 1
ac
GND