User Manual

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9.13 Setting the 8940 F/V UNIT

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Frequency Obtains the frequency of the input pulse corresponding to

the measured waveform.

Count Counts the number of input pulses.

Pulse Duty Ratio Obtains the duty ratio of the measured waveform.

Voltage Measures the waveform voltage.

Current Measures the waveform current.

NOTE

-5 V

Threshold

Threshold Setting Example

.13 Setting the 8940 F/V UNIT

The 8940 F/V UNIT can measure frequency, count, pulse duty ratio, voltage

and current on each channel (with one measurement type per channel).Refer

to Section 9.3 for the common settings.

■Measurement Mode Selection

Select the measurement mode from the following:

・Hold and pull up settings cannot be determined from the DISPLAY or

CHANNEL screen. Check through the function display that appears when

the flashing cursor is moved to the "range" item.

・During list printing, Hold and Pull-Up on/off selections are printed. Refer to

Section 13.5 for details.

・The input coupling is fixed at DC for Frequency, Count and Pulse Duty

Ratio measurement modes.

・Measurement results may differ depending on the threshold setting. To

obtain the correct measurement, set the threshold to match the input

waveform.

・Probe check function is available only when using the 9322

DEFFERENTIAL PROBE. For details on operating procedure, refer to the

"9322 DEFFERENTIAL PROBE" Instruction Manual.