Nortel Networks Circuit Card - Manual (Page 505)

NT7D16 Data Access card Page 505 of 906
Circuit Card Description and Installation
Environmental
The DAC functions fully when operating within the following specified
conditions. See Table 166.
Reliability
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.
Installing the Data Access card
Cabinet system
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
Table 166
DAC environmental specifications
Specification Operating Storage
Ambient temperature 0 to 60 degrees C 40 to 70 degrees C
Humidity 5% to 95% 5% to 95%