Technical data

Making Measurements 3
U1401A User’s and Service Guide 63
1 ms peak hold
This function allows the measurement of peak voltage for
analysis of components such as power distribution
transformers and power factor correction capacitors. The
peak voltage obtained can be used to determine the crest
factor.
Crest factor = Peak value/True- rms value
To measure the half- cycle peak voltage:
1 Press for more than one second to toggle 1 ms peak
hold mode on or off.
2 Press to show the peak+ or peak– value after
activating the peak mode. The DH MAX annunciator
indicates the peak+ value while the DH MIN annunciator
indicates the peak– value. See Figure 3- 10 on page 64.
3 If the reading is OL, press to change the
measurement range and restart the peak value
measurement.
4 While the peak hold mode is on, you can press at
any time to restart the peak value measurement.