Maintenance
Tester Maintenance
The CH2 tester requires no maintenance. If desired you may clean the outside surfaces of the
CH2 tester. Since some cleaning agents leave a conductive residue, take special care to not
allow the cleaning agents to come into contact with the test point connectors or the circuitry
inside the casework.
Fixture Maintenance
The fixturing contacts that mate to the device-under-test may wear due to repeated insertion
cycles. Contact wear can result in higher connection resistances which increases the
measured resistances for the device-under-test. For this reason Cirris recommends that
customers evaluate the number of mating cycles and the cycle life of fixture contacts to
determine maintenance intervals for testing and/or replacing fixturing contacts. A good way to
check fixture contact resistance is to construct and use a shorting block. For more information
on creating shorting blocks, see http://www.cirris.com/adapters/test-adapt.html.
Service
Cirris Testers are modular in design for easy servicing. If your Cirris tester requires service, as
directed by Cirris support personnel, you may need to send the affected module or the entire
tester back to Cirris for repair. If needed during the repair period, a loaner tester can be sent
to you. You should not attempt to service any circuit board at the component level. All
component-level service should be performed by Cirris technicians.
Calibration
With your CH2 tester you should have received a Certificate of Verification. Before leaving the
factory every CH2 tester is calibrated in compliance with ANSI/NCSL Z540-1-1994 and MIL-
STD-45662A to standards traceable to the NIST in the United States. The calibration of the
tester should thereafter be verified annually.
To verify calibration and functionality, you can purchase the CH2 Performance Check Kit. In
addition to the performance check kit, you need a calibrated volt meter and high voltage probe
capable of measuring up to 1500 VDC.
Note: In the event a Cirris tester is found to be out of calibration, there are no adjustable
controls; the tester, or the affected portions of the tester, must be sent back to a Cirris facility
for repair.
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