Digi 90031300 manual Diagnostic Test Descriptions, Test 1 Front Panel Test, Test 2 RAM Test

Diagnostic Test Descriptions

Test 1: Front Panel Test

This test activates the ten LED indicators and the two 7-segment displays in four different patterns at 1-second intervals: the first pattern lights the RD, CTS, DCD, RI and IFC LEDs plus the horizontal elements of both 7- segment displays and the decimal point of the second 7-segment display; the second pattern lights all LEDs and display segments; the third pattern lights the TD, RTS, DSR, DTR and OFC LEDs plus the vertical elements of both 7-segment displays and the decimal point of the first 7-segment display; the fourth pattern turns all LEDs and 7- segment displays off. The cycle then repeats. Since the indicators are write only, the operator must visually verify success (or failure) of this test.

To begin the test in front panel mode, press the left push-button while the number 1 is displayed in the 7-segment LED display. While the test is running, the 7-segment display shows the pass count. The test will be repeated until the left push-button is pressed. At this point, P1 will be displayed. Press the left push-button again to restart the test or the right push-button to advance to Test 2.

When run from a terminal, the test repeats until a key is pressed.

Test 2: RAM Test

The RAM test performs various walking bit and high bit tests.

RAM tests intermix cached & uncached RAM accesses.

To begin the test in front panel mode, press the left push-button while the number 2 is displayed in the 7-segment LED display. While the test is running, the 7-segment display shows the pass count. Errors are counted on the ten LEDs, and the test is repeated until the left push-button is pressed. At this point, either P2 (pass) or F2 (fail) will be displayed. Press the left push-button again to restart the test or the right push-button to advance to Test 3.

When run from a terminal, the test repeats until a key is pressed.

One complete cycle of this test takes about 9 minutes.

Test 3: Timer Test

The timer test runs the internal timer and verifies that the timer can interrupt the CPU.

To begin the test in front panel mode, press the left push-button while the number 3 is displayed in the 7-segment LED display.

When run from the front panel, the pass number is shown on the 7-segment display. Errors are counted on the ten LEDs, and the test is repeated until the left push-button is pressed. The 7-segment display will then show P3 or F3 to indicate pass or fail status.

When run from a terminal, the test repeats until a key is pressed.

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