Page 7.4
32-CHANNEL DIGITAL I/O MODULE 40-412
pickering
SECTION 7 - MAINTENANCE INFORMATION
Figure 7.3 - Using Soft Front Panel To Set a Threshold of 9.5V (1011111000 in Binary)
Output Driver Test
The following test checks the drivers are operational; it does not check the current capability of the drivers and uses
the digital inputs to check that the output state has changed.
et the voltage source to
he fi ture otential divider out ut will now e
et hreshold oltage to
9.5V and Threshold Voltage 2 to 10.5V.
With all drivers off check Threshold Voltage 1 responds high and Threshold Voltage 2 responds low.
Turn on Channel 1 high side driver, check that both thresholds respond high. Turn driver off.
Repeat for Channel 2 to 32 high side driver.
Turn Channel 1 lows side driver on, check that both thresholds respond low. Turn driver off.
Repeat for Channel 2 to 32 low side driver.
Pass/fail results can be recorded in the table on the following page.
