Hioki 3284 HiTester, Инструкция по эксплуатации

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Chapter 2 Measurement Procedure
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NOTE
2.4.3 Output Function For Frequency
･
At the 100 Hz and 1000 Hz ranges,
----
appears on
the counter when the frequency is lower than 10 Hz.
･
----
appears on the counter, if the frequency is lower
than 1 Hz.
･
O. L.
appears on the counter, if the frequency is
higher than 1 kHz.
･
If an input value is significantly lower than the
range, on accurate measurement may not be
achieved, resulting in
----
,
O. L.
or display
fluctuations.
･
The 10 Hz range or 100 Hz range will display up to
125% of each range, however, only the range from
10% to 100% can be displayed with guaranteed
accuracy.
･
The frequencies, whose waveforms are special such
as inverters, would not be measurable, when the
carrier frequencies are lower than several kHz.
･
Full-wave rectification indicates twice the actual
value, due to an AC coupling in the internal circuit.
･
It would take time to stabilize the counter,
depending on the frequency range or the input
frequency.
Frequency measurement output is available only in
current modes.
An output of DC 1 V is produced for 1000-count on
the full scale of the frequency range. An output is
produced twice per second, the same as display
refreshing. (The output waveform will be in step
form for a large frequency change, due to D/A
outputs.)
1. To make settings, refer to the frequency
measurement procedure in a current mode.
2. Press
OUTPUT
.
REC
annunciator lights and
activates the output function.