Measurement Computing SWITCH - Manual (Page 30)

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Chapter 5
Testing the Switch & Sense 8 Relays
ICalUSB.exe provides the following test that you can perform on the Switch & Sense 8 to verify that its relay
functions are working properly.
You need to connect the external power supply to run this test. You also need an ohmmeter for this test.
1. Run ICalUSB.exe by selecting the Switch & Sense 8 option from the Programs►ComputerBoards USB
group on the Start menu.
2. Click on the Switch & Sense 8 node whose input channel filters you want to configure.
3. Click on the toolbar icon.
"Test' menu option
You can also access this feature by selecting
Test from the USB menu.
The Switch & Sense 8 Test dialog opens.
4. For relay 0, make the connection specified on the dialog, and click on the Relay 0 button.
o The ohmmeter should show a reading close to 0 ohms.
5. Repeat steps 3 and 4 for the remaining relay contacts, using the Relay # button that corresponds to the relay
you are testing.
6. When all relays pass the contact test, click on the OK button to close the dialog.
What if one or more relays fail the test?
If a test of a relay returns an ohmmeter reading that is not near 0, click
OK , check your external power
connection, and repeat the test on the relay that failed.
If the connection is good and the test still fails, contact Measurement Computing’s Technical Support
immediately by phone (508-946-5100), fax (508-946-9500), or email
( [email protected])