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IM AQ6376-01EN
Mesurement
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App
Index
Gate Sampling Measurement
Gate sampling can be used to measure data only when the gate signal is active during
sweeping. By applying an external signal (gate signal) synchronized to the pulse light
emission to the AQ6376, you can efficiently measure pulse light.
Because the gate signal and the sampling time are asynchronous, not all light pulses
may be sampled when a single sweep is performed. When the AQ6376 measures
several times in repeat sweep mode using the MAX HOLD function, all the light pulses
can be sampled, enabling the full waveform can be displayed.
Because the AQ6376 does not show data that is sampled when the gate signal is inactive, the
wavelength data during this period may be missed, but because the sampling time and gate signal
(pulse light) are asynchronous, performing repeat sweep using the MAX HOLD function eventually
results in all the waveform data in the span range to be shown.
* For details on the MAX HOLD function, see section 5.3.
First sweep
Pulse light
Sampling
Gate signal
Waveform display
second sweep
The broken line shows the MAX HOLD waveform of the first sweep.
(appears at a position
different from the first)
nth waveform display
Sweeping
Sampling interval time
Pulse light
Gate signal
Sampling
Waveform display
4.15 Pulse Light Measurement