NF FRA51615, Instruction Manual

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9.3 Measurement processing section
9
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7
FRA 51615
Setting range 0 to 9,990 s
Setting resolution 3 digits or 0.1 ms, whichever is greater
Cycle settings (Set in units of measurement frequency cycles)
Setting range 0 to 9,999 cycles, but no more than 9,990 s
Setting resolution 1 cycle

Integration function
This function performs integration on measurement data to remove the effects of noise. Measurement
repetition can be set either a duration or a number of cycles.
Time setting
Setting range 0 to 9,990 s (The measurement is performed for at least 1 cycle, regardless of
the setting.)
Setting resolution 3 digits or 0.1 ms, whichever is greater
Cycle settings (set in units of cycles, taking the signal acquisition time
*1
to be one cycle)
Setting range 1 to 9,999 cycles
Setting resolution 1 cycle
*1: The signal acquisition time is one cycle of the measurement frequency f when f is approximately 1 kHz
or less. For higher frequencies, the signal acquisition time ranges between 1.0 ms and 20 ms, depending
on the value of f and the cycle setting.

Automatic integration function
This function repeats the integration process until the variation in the measurement values falls below a
set value. However, integration is stopped if the value specified in "
9.3 Measurement processing
section
, ● Integration function" is exceeded.
Setting FIX, SHORT, MED, or LONG.
FIX: The integration is performed with the settings specified in "
9.3
Measurement processing section
, ● Integration function", regardless of
the variation and measurement values.
Other than FIX: The integration is performed until the variation becomes small, but the
measurement time becomes longer in the order of SHORT < MED < LONG.
*1: The signal acquisition time is one cycle of the measurement frequency f when f is approximately 1 kHz
or less. For higher frequencies, the signal acquisition time ranges between 1.0 ms and 20 ms, depending
on the value of f and the cycle setting.

Amplitude compression
This function automatically adjusts the oscillator output amplitude so that the amplitude of the signal
input to the reference channel satisfies the target amplitude that is set. This function maintains a constant
amplitude for the measurement system to prevent saturation and damage to the measurement system.
Reference channel CH1 or CH2
Target amplitude setting
Setting range 1 µV to 600 Vrms (value before input weight processing)
Setting resolution 3 digits
Voltage limit for the oscillator output
Setting range 1 mV to 10 Vpk
Setting resolution 3 digits