Meridian America Link/Customer Controlled Routing User Manual
Page 94
76 Chapter 4: Meridian Link/CCR hardware
553-3202-210 Standard October 1998
NT6D51AA transition card
This custom transition card (shown in Figure 23) provides extra
terminal/printer ports for CCR and Co-resident Modules. The card routes
signals among the ACC card, the asynchronous user terminals, and the
outside world. This card has no optional settings. The NT6D51AA card has
a DIN 96-pin connector for a cable that goes to the J2 connector on the
VME bus backplane. The card also has three DB25 (SP1, SP2, and SP3)
subminiature connectors for cables that go to the I/O panel. Each port
requires only eight pins per port, so serial ports 1, 2, and 3 are brought out
through SP1. Serial ports 4, 5, and 6 come through SP2, and serial ports 7
and 8 come through SP3. Serial port 9 is not used. Three NT7D95AA cables
are required to connect SP1, SP2, and SP3 to the I/O panel.