Installing The Data Access Card - Nortel Circuit Card Installation Manual

Environmental
Reliability

Installing the Data Access card

Cabinet system
The DAC functions fully when operating within the following specified
conditions. See Table 166.
Table 166
DAC environmental specifications
Specification
Ambient temperature
Humidity
The DAC has a predicted mean time between failure (MTBF) of 8 years at
45 degrees Celsius. The mean time to repair (MTTR) is 1 hour.
The DAC is fully supported in any card slot in either the main or expansion
cabinet without any hardware modification. Insert the DAC into any available
card slot and secure it in place using the locklatches.
To cable out the DAC, run a standard 25-pair cable to the cross connect, or
use one of the following breakout cables in conjunction with an Amphenol
50-pin female-to-female gender converter:
• QCAD318A50-pin Amphenol to 6 female DB25 connectors
• QCAD319A50-pin Amphenol to 6 male DB25 connectors
Note: For Cabinet system, the format to be used in response to the "TN"
prompt must be one of the following:
CC 00 00 UUCC - Card Slot
or CC UUUU - Unit Number
NT7D16 Data Access card
Operating
0 to 60 degrees C
5% to 95%
Circuit Card
Page 505 of 906
Storage
40 to 70 degrees C
5% to 95%
Description and Installation