Nortel Networks 1000 - Manual (Page 125)

Electrical specifications 125
Table 50
OPS analog line card - electrical characteristics (cont’d.)
Characteristic Specification
Line leakage
≥
30k ohms, tip-to-ring, tip-to-ground,
ring-to-ground
AC induction rejection 10 V rms, tip-to-ring, tip-to-ground,
ring-to-ground
Table 50 "OPS analog line card - electrical characteristics" (page 124) lists
the electrical characteristics of OPS analog line card line interface units.
Power requirements
Table 51 "OPS analog line card - power requirements" (page 125) shows
the maximum power consumed by the card from each system power
supply.
Table 51
OPS analog line card - power requirements
Voltage Tolerance Current (max.)
±15.0 V dc ± 5% 150 mA
+8.5 V dc ± 2% 200 mA
+5.0 V dc ± 5% 100 mA
–48.0 V dc ± 5% 350 mA
The +8.5 V dc input is regulated down to +5 V dc for use by the digital
logic circuits. All other power to the card is used by the line interface
circuits.
The +8.5 V dc input is regulated down to + 5 V dc for use by the digital
logic circuits. All other power to the card is used by the line interface
circuits.
The +8.5 V dc input is regulated down to +5 V dc for use by the digital
logic circuits. All other power to the card is used by the line interface
circuits. The ±15.0 V dc inputs to the card are used to power the analog
circuits. The +5 V dc from the module power supply is used for the analog
hybrid. The
–48.0 V dc input is for the telephone battery. Ringing power for telephones
is 86 Vrms ac at 20 Hz on –48 V dc. The Rsync signal is used to switch
the 20 Hz ringing on and off at the zero cross-over point to lengthen the
life of the switching circuits.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.