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Chapter 4: Meridian Link/CCR hardware
MVME332XT or MVME332XTS asynchronous communication
controller (ACC) card
553-3202-210 Standard October 1998
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.
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Halt indicator This red LED is lit steadily when the on-board
processor halts, indicating an ACC card malfunction.
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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.
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