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15-9

IM 701210-06E

Using the DSP Channel (Optional)

• Setting the Number of Stages of Moving Average: TAP

Select the number of stages from 2, 4, 8, 16, 32, 64, and 128.

For details on other filters, see appendix 6.

Setting Value/Div

Like V/div, Value/Div is set using 1-2-5 steps. The selectable range is 10.00E–21

[Value/Div] to 500.0E+18 [Value/Div] with 123 settings.

Turn the V/DIV knob to set the Value/Div value. You can also set Value/Div by pressing

the Value/Div soft key and turning the jog shuttle.

Automatically Selecting the Optimum Value/Div Setting

When you press the Optimize Value/Div soft key, the optimum range is automatically

selected from the 123 Value/Div settings, and the waveform is displayed using the

selected setting.

Zooming in on the Waveform

• Zooming in or out Vertically by Setting the Magnification

For details, see section 5.8, “Zooming Vertically by Setting the Zoom Rate” and

“Notes Concerning Display” in section 15.1.

• Zooming/Expanding Vertically According to the Upper and Lower Limits of the

Display Range

For details, see section 5.9, “Zooming Vertically According to the Upper and Lower

Limits of the Display Range” and “Notes Concerning Display” in section 15.1.

Setting the Unit

Unit can be set arbitrarily using up to four characters. The specified characters are

applied to the scale values.

Notes When Using Filters

The following limitations exist depending on the acquisition mode setting.

• When the Acquisition Mode Is Set to a Mode Other Than Envelope

The digital filter frequency is set in terms of a percentage of the sampling frequency.

For example, if the sampling frequency is 100 kHz and you set the cutoff frequency to

10%, the cutoff frequency is set to 10 kHz. If the sampling frequency exceeds 100

kHz, the sampling frequency of DSP channels is decimated to 100 kHz. Therefore, if

the sampling frequency exceeds 100 kHz, the specified frequency is a percentage of

100 kHz regardless of the actual sampling frequency.

• When the Acquisition Mode Is Set to Envelope

The sampling frequency of DSP channels is fixed to 100 kHz. The digital filter

frequency is set in terms of a percentage of 100 kHz.

Note

For other notes concerning DSP channels, see section 15.1.

15.3 Using Filters (DSP Channels)

YOKOGAWA DL750 User Manual

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