Hioki 9605-01, Инструкция по эксплуатации, Страница: 38 / 100

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4.7 Measurement using an External Sync Signal
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4.7.1 Theory of Operation
Fundamental waveform frequency (U1)
Calculation
Standard
Standard
External synchronization signals
Phase difference
Fundamental waveform frequency (U1)
Calculation
Standard
Standard
External synchronization signals
4.7 Measurement using an External Sync Signal
External signals can be synchronized with PLL for high frequency analysis
of voltage, current, and electric power. Also, measurement of the phase
amount change of voltage/current based on external signals is possible.
If the pulse count is a multiple of the fundamental waveform frequency,
calculation is based on the rising edge of the pulse nearest the rising edge
zero crossing of the U1 fundamental waveform component.
Pressing the
MEAS
key forces the phase difference ( θ 0) between U1 and the
standard to zero.
Single pulse
Multiple pulses