Omega RD100B manual Model Integration Time of the A/D Converter

1.2 Measuring Input Section

Integration Time of the A/D Converter

The recorder uses an A/D converter to convert the sampled analog signal to a digital signal. By setting the integration time of the A/D converter to match the time period corresponding to one cycle of the power supply or an integer multiple of one cycle, the power supply frequency noise can be effectively suppressed.

The integration time of the A/D converter is selected according to the model from the table below.

Model	Integration Time of the A/D Converter
Pen model	Select 16.7 ms (60 Hz), 20 ms (50	Hz), or Auto
Dot model	Select 16.7 ms (60 Hz), 20 ms (50	Hz), 100 ms or Auto

•If Auto is selected, the recorder detects the power supply frequency and automatically selects 16.7 ms or 20 ms.

•Because 100 ms is an integer multiple of 16.7 ms and 20 ms, this setting can be used to suppress the power frequency noise for either frequency, 50 Hz or 60 Hz.

•The scan interval on the dot model is 1 s when the integration time is set to 16.7 ms or 20 ms and 2.5 s when the integration time is set to 100 ms.

<Related Topics>

Setting the A/D integration time: Section 7.2

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