Hioki PW3390 - Data Hold and Peak Hold Functions; Data Hold Function

5.3 Data Hold and Peak Hold Functions
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Pressing disables updating of all displayed measurement values and waveforms. In this state,
data on other screens can be viewed as it was when was pressed.
The data update of internal measurement values is not synchronized to the display update. The internal
measurement values are updated in 50 ms (internal data update rate). The waveform and noise data is
updated at the calculation completion. However, the waveform and noise display is not updated.
While data hold is active, is displayed and the key lights red.
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.
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 Data Hold and Peak Hold Functions
5.3.1 Data Hold Function
To cancel Data Hold:
Press , then press .
Indicates Data Hold is active
Measurements, calculations and
averaging continue unaffected
internally.
Each time this key is pressed, the values
measured at that time are displayed.
Displayed value
Data Hold
activated
Display update
and Data Hold
activated
Data Hold
canceled
Update UpdateData HoldData Hold
Displayed
value
Time
Internal
measure-
ment value
• Clock and integration times and Peak Over display are unaffected by the Data Hold func-
tion.
• Data Hold and Peak Hold functions cannot be activated simultaneously.
• Settings cannot be changed while Hold is active.
• When AUTO ranging is enabled, the range is fixed at that used when is pressed.
• key operation is recognized before and during use of the timer control functions.
When an interval time is set: the display updates at each interval, and display data is held for the
duration of the interval.
When the timer or clock control is set
: the display updates and holds the values at the stop time.
• When auto-saving at a specified interval, data is saved immediately before display
update.