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Model 4085M
4-1 3 . DC LEAKAGE TEST
4-14. The DC Leakage Test checks for excessive leakage current . in the 4085A. Two
tests-OPEN TEST and SHORT TEST-are performed.
( 1 ) OPEN TEST:
Sets all relays on all pin boards to BREAK and m easures leakage current.
(2) SHORT TEST:
Checks the level of current m easured by an S M U connected to
m easurem ent pins.
The test procedure is given below.
Cl) Mount the 1 6 066A Test Fixture Adapter atop the 4085A. Do not install a test
fixture in the 16066A. Close the lid�
(2) Press softkey [g] (DC LEAK). The Leakage Test will begin imm ediately. If
no errors are indicated, the 4 085A is functioning properly. The test takes
about 3 0 seconds.
+ + + + + DC
OPEN T E S T
SHORT T E S T I
Do n · t use the�e P l ns !
DIAG . ERROR
t h e d es l red sof t k e y .
P r ess
Execute the Relay Test and the 4145A's self test before the DC
Leakage Test.
Before executing the DC Leakage Test, make sure that the SMU
terminals of the 4145A are connected to the corresponding S M U ports
of the 4085A, and make sure the shorting connecter is connected to
the To 1 6 058A TEST FIXTURE connecter of the 4145A
LEAK TEST + + � + +
OK
ERROR
3
Leakage
i n SW I tc h i n g Mat r I X .
Figure 4-5. DC Leak Test Display
Note
Note
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- - - T E S T RESUL T - - -
Section IV
the
all
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4-5
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