Agilent Technologies 54502A Manuale di Servizio Scaricare il pdf (Pagina 111)

ROM Self Test The ROM self test verifies the operation of the system ROM.

1. In HP 1650B/51B Self Tests menu, move cursor to ROM and SELECT.

2. Move cursor to Single test or Repetitive test and SELECT.

3. If running repetitive test press and hold STOP to end test. The number of

runs and failures are displayed in the menu.

4. To return to HP 1650B/51B Self Tests menu, move cursor to Done and

SELECT.

Disk Drive Self

Test

The disk drive self test verifies the functionality of key elements of the internal disk

system.

1. In HP 1650B/51B Self Tests menu, move cursor to Disk Drive and SELECT.

2. Move cursor to Single test or Repetitive test and SELECT.

3. If running repetitive test press and hold STOP to end test. The number of

runs and failures are displayed in the menu.

4. To return to HP 1650B/51B Self Tests menu, move cursor to Done and

SELECT.

Cycle Through

Tests

The following tests are run consecutively and continually until STOP is pressed:

Data Acquisition

RAM

ROM

Disk Drive

To see reults of continuous tests, move cursor to one of the four tests listed on the

menu and SELECT. The number of runs and failures are displayed for that test.

To return to HP 1650B/51B Self Tests, press SELECT.

Auxiliary Power The + 5 volts auxiliary power to the logic analyzer pods is protected by a current

limiting circuit on the System Assembly Board. If current on pins 1 and 39 of the

logic analyzer pods exceeds 2.3 amps, the current limiting circuit opens. After the

path causing the excessive current is opened, the circuit resets in approximately 20

ms. If a problem is suspected with this circuit, remove all loads from the pods and

measure for + 5 volts at either pin 1 or 39 of the pod.

Service HP 1650B/1651B

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Agilent Technologies 54502A Manuale di Servizio Pagina 111