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User's Manual
A slower data update interval can capture the low frequency signal. A faster data update interval can capture
the fast-changing signal, such as a rapidly changing load in a power system. If the period of the input signal
varies greatly, set the data update period to Auto.
Data Update Interval Setup
1.
Using the [▲] or [▼] key in the SETUP menu to select "Data UpRate" (the option is fill with red
shading which means it is selected).
2. Pressing the [ ] or [ ] key to select 0.1s, 0.25s, 0.5s, 1s, 2s, 5s, 10s, 20s, Auto.
3. Using the [▲] or [▼] key to select other setting option or pressing the [ESC] key to go back to
the measurement interface.
Functional Limitations
The following limitations apply when the data update interval is set to Auto.
1.
The integration function cannot be used. If you try to start it, an error will pop out "The
integration cannot be enabled in Data UpRata AUTO mode".
6.1.6
Auto Timer (Timeout)
The timeout is a time limit for detecting the waveform of the input signal. When the data update period is set
to Auto, if the frequency of the input signal is low and the period of the synchronized source cannot be
detected within the timeout period, the frequency data will be out of the measurement range and result in
an error. The measurement function of common measurement uses the entire period up to the timeout
period as the measurement interval to acquire the measurement value. The timeout determines the lower
limit of the measured signal frequency, and the lower frequency limit for different timeouts is shown in the
table below.
Instruments.uni-trend.com
2s
5s
10s
20s
Auto
Auto Timer
1s
5s
10s
20s
DC,1Hz～300kHz
DC,0.5Hz～300kHz
DC,0.2Hz～300kHz
DC,0.1Hz～300kHz
DC,0.1Hz～300kHz
Lower Limit of Frequency
2.0Hz
0.5Hz
0.2Hz
0.1Hz
UTE310 Digital Power Meter
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