Keysight U1271A Guia Del Usuario página 56

2 Making Measurements
Crest Factor
The crest factor may be determined by using this formula:
Crest factor
You may refer to
the peak values.
The crest factor may be up to 3.0 at full-scale except for the 1000 V range where
it is 1.5 at full scale, as explained in the table below:
Vol tage range
30 mV
300 mV
3 V
30 V
300 V
1000 V
Exceeding the crest factor limit may result in an incorrect or a lower reading.
WARNING
Do not exceed the crest factor limit to avoid instrument damage and the risk
of electric shock.
56
Peak value
= - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
True RMS value
"Capturing Peak Values (Peak)"
Crest factor
3
3
3
3
3
1.5
on page 114 on how to obtain
Maximum input (V
+/– 90 mV
+/– 900 mV
+/– 9 V
+/– 90 V
+/– 900 V
+/– 1500 V
Keysight U1271A/U1272A User's Guide
)
peak