Hioki 3257-50, Инструкция по эксплуатации

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2.3 Frequency Measurement
24
2.3 Frequency Measurement
• The maximum input voltage is 1000 VDC,
1000 Vrms, or 10
7
V•Hz.
Attempting to measure voltage in excess
of the maximum input could destroy the
product and result in personal injure or
death.
• For safety, test lead connections must
always be made at the secondary side of a
circuit breaker.
REC•MEMO
1.
Move the function selector to
the
V position and press
the REC•MEMO button ("Hz"
lights up).
2.
Connect the red test lead to
terminal
V.

, and the black test
lead to terminal COM .
3.
Select the input level (1 to 4)
using the
RANGE button, in
accordance with the input volt-
age.
4.
Connect the test leads to the
measurement object, and read
the indicated value.
RANGE
Input level
Attenuation factor of the input voltage
(1/10
n
) (n: Scale number)
Indication range: 0.5 Hz to 500 kHz
Input level Range
1
2
3
4 0.8 to 4 V
4 to 40 V
40 to 400 V
400 to 1000 V 4.200V
42.00V
420.0V
1000V
Canceling the frequency
measurement:
Press REC•MEMO
If noise is superimposed on the measurement tar-
get, accurate measurement may not be possible.