13.3 Measurement Specifications
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Chapter 13 Specifications
Instantaneous flicker value (S(t))
Measurement method As per IEC61000-4-15
User-selectable from 230 Vlamp/120 Vlamp (when Pst and Plt are selected for flicker measure-
ment)/4 types of Ed2 filter (230 Vlamp 50/60 Hz, 120 Vlamp 60/50 Hz)
Displayed item Instantaneous flicker value
Measurement range, resolution 99.999, 0.001
Measurement band See RMS frequency characteristics.
Measurement accuracy -
Event threshold None
Frequency (Freq or f)
Measurement method Calculated as the reciprocal of the accumulated whole-cycle time during approx. 200 ms period of
10, 12, or 80 U1 (reference channel) cycles.
Sampling frequency 200 kHz
Displayed item Frequency
Measurement range, resolution When the measurement frequency is set to 50/60 Hz : 70.000 Hz
When the measurement frequency is set to 400 Hz : 440.00 Hz
Measurement band When the measurement frequency is set to 50/60 Hz : 40.000 to 70.000 Hz
When the measurement frequency is set to 400 Hz : 360.00 to 440.00 Hz
Measurement accuracy When the measurement frequency is set to 50/60 Hz : 0.020 Hz or less
When the measurement frequency is set to 400 Hz : 0.20 Hz or less (with input voltage of 4%
f.s. to 110% f.s.)
Event threshold Specified as deviation from 0.1 Hz to 9.9 Hz in 0.1 Hz increments
Event IN Start of approx. 200 ms aggregation in which threshold was exceeded
Event OUT Start of approx. 200 ms aggregation in which reading returned to (threshold - 0.1 Hz)
Note: Equivalent to 0.1 Hz frequency hysteresis.
Multiple-phase system treatment None
Saved waveforms Event waveforms
10-sec frequency (Freq10s or f10s)
Measurement method Calculated as the reciprocal of the accumulated whole-cycle time during the specified 10 s period
for U1 (reference channel) as per IEC61000-4-30. (To ensure measurement precision, it is neces-
sary to wait a maximum of 20 s after inputting the signal.)
Sampling frequency 200 kHz
Displayed item 10-sec frequency
Measurement range, resolution When the measurement frequency is set to 50/60 Hz : 70.000 Hz
When the measurement frequency is set to 400 Hz : 440.00 Hz
Measurement band When the measurement frequency is set to 50/60 Hz : 40.000 to 70.000 Hz
When the measurement frequency is set to 400 Hz : 360.00 to 440.00 Hz
Measurement accuracy When the measurement frequency is set to 50/60 Hz : 0.010 Hz or less
When the measurement frequency is set to 400 Hz : 0.10 Hz or less (with input voltage of
1.666% f.s. to 110% f.s.)
Event threshold N/A
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