General Information
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Maintenance
Tester Maintenance
The CH+ tester requires no maintenance. If desired you may clean the outside surfaces of
the CH+ 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 contacts on the fixturing that mate to the device under test may wear due to repeated
insertion cycles. Contact wear can result in higher connection resistances which in turn will
increase the measured resistances for the tested device. 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
All Cirris Testers are designed as modules for easy servicing. Should your Cirris tester
require 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 CH+ tester you should have received a Certificate of Calibration. 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 tester should
thereafter be calibrated annually.
To verify calibration and functionality, you can purchase the CH+ Performance Check Kit.
The CH+ Performance Check kit has a valid calibration period of 5 years after which it must
be replaced. 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 that 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.
General
Information
