Nortel Networks Circuit Card - Manual (Page 870)

Page 870 of 906 QPC841 Quad Serial Data Interface card
553-3001-211 Standard 3.00 August 2005
QSDI cards are housed in the following modules:
• NT5D21 Core/Network module (slots 0 through 7)
• NT6D39 CPU/Network module (slots 1 through 9, and 13)
• NT6D60 Core module (slots 0 through 5)
• NT8D35 Network module (slots 5 through 13)
• NT9D11 Core/Network module (slots 0 through 8)
Note: When a QSDI card is installed in an NT6D60 Core module, an
NT8D34 CPU module, or slot 13 of an NT6D39 CPU/Network module
in a dual-CPU system, any input/output I/O device connected to the card
does not function when the CPU in that module is inactive.
Physical description
The QPC841 QSDI card is a printed circuit board measuring 31.75 cm by
25.4 cm (12.5 in. by 10 in.). The front panel is 2.54 cm (1 in.) thick. See
Figure 187 on
page 871 .
Up to four QSDI boards can be used in a system, allowing a total of sixteen
asynchronous serial ports. The four serial ports on each card are addressed as
two pairs of consecutive addresses (0 and 1, 2 and 3, and so on up to 14 and
15). The pairs need not be consecutive. For example: pairs 0 and 1, and 4 and
5 could be used.
The card front panel has two connectors, J1 and J2. Connector J1 is used for
port 1 while connector J2 is used for ports 2, 3, and 4. It also has an Enable/
Disable (ENB/DIS) switch and a red LED. The LED indicates that the card
has been disabled. It is lit when the following occurs:
• the ENB/DIS switch is set to DIS
• all of the ports on the card are disabled in software
• none of the card ports are configured in software