Probe Adjust Signal; Frequency And Output Voltage - Fluke PM3082 Service Manual

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6.3.40 Probe Adjust signal; frequency and output voltage

The Probe Adjust (CAL) signal is a calibration signal with fixed frequency and voltage. In this test, the
values of frequency and voltage are checked.
test equipment:
None
test set-up:
OSCILLOSCOPE UNDER TEST
CABLE
settings/procedure:
1 - Connect the Probe Adjust signal to input CH1 and press the AUTOSET key.
2 - Select GND of CH1.
3 - Set the trace in the center of the screen.
4 - Switches GND of CH1 off.
5 - Select DC input coupling for CH1.
requirements:
1 - Verify that a positive going square-wave signal of 0.6 V(pp) is displayed, i.e. 3 divisions vertical
at 0.2V.
2 - Verify that the frequency of the displayed signal is about 2 kHz, i.e. a period time between
4.0 ... 6.0 divisions horizontal at MTB 0.1 ms.
PERFORMANCE TEST