Hold BCD Inputs High
It is recommended that the inputs be held high until after the test is started.
This will avoid a race condition when the inputs are turned off. If one of
the inputs turns off before the others the selected program will change
accordingly. Once the test cycle begins the program can not be changed
again until the cycle ends and the tester is idle again.
Four Channel Concurrent
without BCD
FIGURE 94
Concurrent Pass/Fail Outputs
The pinout for concurrent testers will follow one of the three formats as
shown in figures 93, 94 and 95.
With the concurrent multi-channel versions, the pinout will only have as
many sets of Pass/Fail outputs as it has channels or test ports. A 2 channel
will have 2 pass outputs. A 3 channel will have 3 pass outputs.
25
1
24V Remote Start
Test Over
Fail 1
Pass 1
Pass 3
Pass 2
Pass 4
Fail 2
Fail 3
Fail 4
+
-
Appendix 13
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