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Cirris Systems | Help 17
Gerneral Information
Maintenance
Tester Maintenance
The CR tester requires no maintenance. If desired you may clean the outside surfaces of the CR
tester.
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 CR tester you should have received a Certificate of Calibration. Before leaving the factory
every CR 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 CR
Performance Check kit has a valid calibration period of 2 years after which it must be replaced. 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.
Conditions for Operation
Your CR Tester is intended to be used indoors at a temperature of 10 to 40 degrees Celsius. The
unit can be mounted in a ventilated compartment.
Never apply live voltages to the test points or probe input of your Cirris tester. Power supplies and
other accessories not approved by Cirris may cause damage or present a hazard. If you use a Cirris
product in a manner not specified in this manual and the accompanying help system, the protection
provided by the product may be impaired.
External Power Source Warning