Specifications

PERFORMANCE TESTS
8. Press the CATALOG/SYSTEM MENU key.
9. Press the 'SELF TEST' soft key to display the SELF TEST page.
10. Move the cursor to the TEST MENU field.
11. Press the 4 and ENTER keys to select the Handler I/F test.
12. Press the 'TEST START' softkey.
13.
Confirm that the LEOs on the handler simulator board turn ON in accordance
with the
HP 4285A's output signals displayed on the LCD. The LEOs should turn
ON in the sequence shown in Figure 1-26.
,",,"(T)C"\l.,....
:i:i:i:i
uuuu
I
-'
«
CD
z
::>
000000000=,=,000 00000000000
..
~-------------. OFF
EXT TRIG-: Always ON
PHI-, PLO-, SREJ-, UNBAL-, ALARM-: Always OFF
Figure 1-26. Handler Interface Function Check
14. Press the 'TEST END' softkey.
I CAUTION I
DO NOT EXECUTE ANY SELF TEST EXCEPT FOR THE HANDLER I/F TEST OR
THE HP 4285A WILL BECOME INOPERATIVE. THE REMAINING SELF TESTS
ARE FOR SERVICE USE ONLY.
15. Return the jumper settings on the handler interface board to their original
settings.
1·40