Page 502 of 894 NT7D16 Data Access card
553-3001-211 Standard 2.00 September 2004

Backplane pinout and signaling

Two 40-pin, and two 20-pin edge connectors connect the card to the

backplane. The detailed pinout configurations are listed in Tables 165 and

166.

Table 165
RS-232-C and RS-422 pinouts for first three DAC ports (Part 1 of 2)
I/O cable
Unit no.
RS-232-C
RS-422
Signal
Patch pair or
octopus
Pair Pin
Pair
color Signal Pin no.
1T 26 W-BL UNIT 0 TD0 2RDA0
1R 1BL-W RD0 3RDB0
2T 27 W-O DTR0 20 SDA0
2R 2O-W GND0 7SDB0 Connector
3T 28 W-G DCD0 8 1
3R 3G-W DSR0 6
4T 29 W-BR RI0 22
4R 4BR-W CTS0 5
5T 20 W-S UNIT 1 TD1 2RDA1
5R 5 S-W RD1 3RDB1
6T 31 R-BL DTR1 20 SDA1
6R 6BL-R GND1 7SDB1 Connector
7T 32 R-O DCD1 8 2
Note 1: The RS-232 pinout follows the standard set by the QPC723 RILC.
Note 2: The RS-422 pinout follows the standard set by the QPC430 AILC (first pair: Receive
Data; second pair: Send Data). Receive and Send are designated with reference to the DTE;
therefore, they must be turned over in the cross-connect since most DTE have first pair as Send
Data and second pair as Receive Data.