Functions and Features
3
Keysight U1211A, U1212A, and U1213A User’s and Service Guide
59
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:
Enabling the 1 ms peak hold function
1
Press
Shift/Peak
for more than 1 second to toggle 1 ms peak hold mode ON
and OFF.
2
Press
Hold/Max Min
to switch between maximum and minimum peak
readings. DH MAX indicates maximum peak, while DH MIN indicates minimum
peak (DH MIN minimum peak is only available in U1213A).
3
Press
Shift/Peak
for more than 1 second to exit the mode.
4
In the measurement example shown in
60, the crest factor
will be 312.2/220.8 = 1.414.
Crest factor =
Peak value
True RMS value
NOTE
– If the reading is
“OL”
, press
Range/Auto
to change the measurement range
and to restart peak-recording measurement.
– If you need to restart peak recording without changing the range,
press
Shift/Peak
.
Содержание U1211A
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