usi M9000 - One Year; Five Year

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5.2.1 One Year
Perform these items annually:
• Verify Analog Input Calibration
Use the Verify feature to confirm internal calibration (see Section 2.3.7).
• Verify Digital Input Operation
Use the Event Self-test feature to confirm internal calibration (see Section 2.3.7).
• Verify Recorder Operation
Use the Trigger Now button to confirm recorder operation (see Section 3.3).
• Verify Storage Free Space
Archive and remove old data records from the recorder storage drives.
5.2.2 Five Year
Every five years perform all maintenance items (see Section 5.1).