Features and Functions 3
Agilent U1251A/U1252A User’s and Service Guide
67
1 ms Peak Hold
This function allows the measurement of half- cycle peak
voltage for analysis of components such as power distribu-
tion 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
1
Push
for more than 1 second to toggle 1 ms Peak
Hold mode ON / OFF.
2
Push
to scroll through maximum and minimum
peak readings.
MAX
indicates maximum peak,
while
MIN
indicates minimum peak.
3
Push
or
for more than 1 second to exit this
mode.
4
According measurements in
Figure 22
, the crest Factor
will be 2.5048/1.768 =1.416.
N O T E
•
If the reading is "
OL
", push
to change measuring range and to
re-start peak-recording measurement.
•
If you need to re-start peak recording, push
Summary of Contents for U1251A
Page 34: ...34 Agilent U1251A U1252A User s and Service Guide 1 Getting Started Tutorial...
Page 116: ...116 Agilent U1251A U1252A User s and Service Guide 5 Maintenance...
Page 120: ...120 Agilent U1251A U1252A User s and Service Guide 6 Accessories...
Page 156: ...156 Agilent U1251A U1252A User s and Service Guide 8 Specifications...
