Hioki PW3390 - Peak Hold Function

5.3 Data Hold and Peak Hold Functions
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Chapter 5 Operating Functions
Pressing after pressing activates the Peak Hold state, in which only those items that
exceed their previous maximum values are updated. This is convenient, for example, to measure motor
inrush current.
When Peak Hold is active, is displayed and the key lights red.
Pressing when Peak Hold is active resets the peak values and resumes with new peaks from that
point.
Display data
update
After pressing , the display data is next updated at the end of the mea-
surement interval or when an external sync signal is received.
(Updating of internal measurement values is not synchronized with display data update,
but at the 50-ms internal data update rate, and waveform and noise data are updated when
calculation finishes.)
Output data When the display is HOLD, the HOLD value is keep on outputting for the D/A
output, CF card save and communication. However, the waveform output contin-
ues to output the instantaneous data regardless to the HOLD status.
5.3.2 Peak Hold Function
To activate and cancel Peak Hold: Pressing after pressing .
Indicates Peak Hold is active
Measurement continues unaffected
internally
The display updates only when the previous maximum is exceeded.
Displayed value
Peak Hold activated
Update UpdatePeak Hold
Displayed value
Internal measurement value
Time
Peak Hold canceled
Displayed value
Peak Hold activated
Update Update Peak Hold
Peak Hold canceled
Peak Hold
Displayed value
Time
Reset
Internal
measurement
value
+
+