Functions and Features 3
U1253B User’s and Service Guide 69
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:
(3)
1 Press for more than 1 second to toggle 1 ms Peak
Hold mode ON and OFF.
2 Press to switch between maximum and minimum
peak readings. indicates maximum peak, while
indicates minimum peak.
3 Press or for more than 1 second to exit this
mode.
4 In the measurement example shown in Figure 3- 7 on
page 70, the crest factor will be 2.2669/1.6032 = 1.414.
Crest factor
Peak value
True RMS value
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=
• If the reading is “OL”, press to change the measurement range
and to restart peak-recording measurement.
• If you need to restart peak recording without changing the range, press
.