Fluke NetDAQ 2645A - Manual (Page 199)

Maintenance
Performance Test
6
6-27
8. Short Channel Inputs Remove the Universal Input Module from the
instrument and apply a short to channels 1 through 8. Reinstall the Universal
Input Module.
9. Start Instrument Scanning Select Logging | Start Instrument to start the
instrument scanning. The instrument must be scanning to set the DIO lines.
10. Open Spy Window Select the Spy command from the Utilities menu. Select
01DIO. Click OK to open the Spy window.
11. Verify Digital I/O Output for all Set Lines The Spy window summarizes
the 8 DIO binary lines as a decimal equivalent, i.e., 0 for the present condition
of all lines set (00000000).
12. Measure DIO Lines Using a digital multimeter, measure the output of each
DIO line, referenced to the GND line, for a voltage less than +0.8V dc.
13. Close Spy Window.
14. Stop Instrument Scanning Select Logging | Stop Instrument to stop
instrument scanning.
Digital Input Test 6-26.
This test checks the Digital I/O lines when used as inputs.
1. Connect Test Leads to DIGITAL I/O Connector Remove the 10-position
DIGITAL I/O connector from the instrument rear panel. Connect a test lead to
each DIO line 0 to 7, plus a test lead to the GND line. Also connect a test lead
to the
Σ
(Totalizer) output. Reinstall the connector.
2. Open Spy Window Select the Spy command from the Utilities menu. Select
01DIO. Click OK to open the Spy window.