Meridian America Link/Customer Controlled Routing manual Meridian Link/CCR hardware

68Chapter 4: Meridian Link/CCR hardware

MVME332XT or MVME332XTS asynchronous communication controller (ACC) card

The MVME332XT or MVME332XTS asynchronous communication (ACC) card is used to provide extra terminal/printer ports. The card provides an RS-232 interface between the VME system and the asynchronous serial I/O peripheral devices like the RS-232 modems, printers, and terminals. The ACC card is located in the third card slot in the front of the Application Module.

There are three LEDs on the faceplate of the MVME332XT card and two on the MVME332XTS card (Figure 19). The LEDs show the following conditions:

¥Fail indicator This red LED is lit when a hardware failure occurs on the ACC card.

¥Halt indicator This red LED is lit steadily when the on-board processor halts, indicating an ACC card malfunction.

¥Run indicator The Run indicator LED is found on the MVME332XT card only. This green LED indicates the activity level of the ACC card by lighting dimly, brightly, or in pulsing mode. A dimly lit LED indicates that the system is idle, meaning that no terminal activities are occurring. A brightly lit or pulsing LED indicates data transfer activities such as keyboard input or display updates.

553-3202-210 Standard October 1998