Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario
Page 250 of 894
NT5D33 and NT5D34 Lineside E1 Interface cards
Power requirements
Table 89 shows the voltage and maximum current that the LEI requires from
the backplane. One NT8D06 IPE Power Supply AC or NT6D40 IPE Supply
DC can supply power to a maximum of eight LEIs.
the backplane. One NT8D06 IPE Power Supply AC or NT6D40 IPE Supply
DC can supply power to a maximum of eight LEIs.
Foreign and surge voltage protections
In-circuit protection against power line crosses or lightning strikes is not
provided on the LEI. It does, however, have protection against accidental
shorts to –52 V dc analog lines.
provided on the LEI. It does, however, have protection against accidental
shorts to –52 V dc analog lines.
When the card is used to service off-premise terminal equipment through the
public telephone network, install a Line Termination Unit (LTU) as part of
the terminal equipment to provide external line protection.
public telephone network, install a Line Termination Unit (LTU) as part of
the terminal equipment to provide external line protection.
Environmental specifications
Table 90 shows the environmental specifications of the LEI.
Table 89
LEI card – power required
LEI card – power required
Voltage
Max. Current
5.0 V dc
1.6 Amp
+15.0 V dc
150 mA
-15.0 V dc
150 mA
Table 90
LEI card – environmental specifications (Part 1 of 2)
LEI card – environmental specifications (Part 1 of 2)
Parameter
Specifications
Operating temperature – normal
15° to +30° C (+59° to 86° F), ambient
Operating temperature – short term
10° to +45° C (+50 to 113° F), ambient
Operating humidity – normal
20% to 55% RH (non-condensing)
Operating humidity – short term
20% to 80% RH (non condensing)