Calibration Adjustment Procedure - Fluke 175 Calibration Information Manual

Calibration Adjustment
Perform the calibration adjustment procedures if the Product fails the performance test.
The Product buttons behave as follows when the calibration mode is enabled:
Press and hold to test the present function. This measurement is uncalibrated and may be

inaccurate. This is normal.
Press and hold to display the required input.

Press to skip the present calibration step without accepting the input signal.

If a calibration step is skipped, the remaining calibration procedure may be
invalidated.
This feature is not available for units with serial numbers 83911001 to 83911240
and 84060001 and above.
(YELLOW button) Press to store the calibration value and advance to the next step. This

button is also used to exit calibration mode after the calibration adjustment sequence is
complete.

Calibration Adjustment Procedure

Use the following steps to adjust the Product's calibration:
For Products with a serial number of 84060000 and below, switch the Product to volts AC (
Products with a serial number of 83911001 to 83911240 and 84060001 and above, switch the

Product to DC.
1. Turn the Product over and find the Calibration Seal located near the top of the Product (see
Table 5).
2. With a small probe, break the Calibration Seal and press the Calibration Button for 1 second. The
Product will beep and change to the calibration mode. The display reads -, designating the
first calibration step. The Product remains in calibration mode until the Rotary Function Switch is
turned to OFF.
3. Proceed through the calibration steps by entering the input value listed in the table for each step.
When calibrating or measuring AC current, avoid the potential for errors from coupled
noise, by either:
1. Shorting the V to the COM input
or
2. Having NO connection to the V input.
Press  and wait until the step number advances before changing the calibrator
source or turning the Rotary Function Knob.
4. After each input value is applied, press  to accept the value and proceed to the next step
(- and so forth).
5. When the last step in a function is reached, turn the Rotary Function Knob to the next required
function. The Product will not allow a step to be completed if the Rotary Function Knob is turned
to the wrong function.
If the calibration adjustment procedure is not completed correctly, the Product will not
operate correctly. When calibration adjustment is not performed correctly, the Product
displays the messages  and  and the Product must be recalibrated.
Note
Note
Note
Note
Note
True-rms Multimeters
Calibration Adjustment

). For
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