150X Series
Calibration Manual
20
2-Ohm Output Current Test
This procedure verifies the minimum current for a 2-Ω Load in the continuity function:
1. Connect the Fluke 5320A low resistance output terminal to the DUT
COM and Ω terminals.
2. Set the Fluke 5320A to the low resistance source function (L) and 2-Ω output.
3. Set the DUT rotary function switch to the Ω function.
4. Press the DUT T. The Fluke 5320A current reading should be >200 mA.
Open Circuit Voltage Test
This test confirms that the open circuit voltage for the DUT Ω function is within limits.
1. Connect the Fluke 5320A
V and COM meter terminals directly to the DUT Ω and COM
terminals. Observe the correct polarity.
2. Set the Fluke 5320A to the M mode and dc volts.
3. Set the DUT rotary function switch to the
Ω function.
4. Press T and verify that the Fluke 5320A voltage reading is >4.0 V but <8.0 V.
Calibration Adjustment
The Tester features closed-case calibration adjustment and uses known reference sources.
The Tester measures the applied reference source, calculates correction factors and stores
the correction factors in nonvolatile memory.
The subsequent sections present the features and Tester function keys used in the calibration
adjustment procedure. Do the calibration adjustment procedure if the Tester fails any
performance test listed earlier in this manual.
Calibration Adjustment Counter
The Tester contains a calibration adjustment counter. The counter increments each time you
complete a calibration adjustment procedure. The value in the counter can be recorded and
used to show that no adjustments have been made during a calibration cycle.
Use these steps to view the calibration counter of the Tester.
1. Hold down L and turn the rotary function switch from OFF to V. The Tester displays CAL.
2. Press the blue key A once to see the calibration counter. For example, n003.
3. Turn the rotary function switch to OFF.
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