Fluke ScopeMeter 190 II Series Service Manual page 130

F4
7. Press to start the probe calibration.
The first step is to manually adjust the square wave response to a pure square
wave (pulse top must be straight, see Figure 5-20). The trimmer is located in
the probe housing and is reached by rotating the center part of the housing.
For more information, see the instruction sheet for the probe.
Figure 5-20. 10:1 Probe Calibration
F4
8. When done, press
The Probe Calibration is OK if all instructions shown on the display are
finished successfully.
9. Close the hole of the trimmer by rotating the center part of the housing: this is
important for safe use of the probe at high input voltages.
10.Repeat the procedure for the blue VPS410-II-B probe that is connected
between the blue Input B BNC and the probe calibration terminals on the left
side of the instrument.
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to start the DC calibration automatically.
5
Calibration Adjustment
Probe Calibration
5-45