Rish Clamp ES1000AC, Руководство пользователя, Страница: 21 / 32

13.0 Frequency & Duty Cycle Measurement
13.1 Frequency Measurement
Set the function selector switch to VAC and press yellow
function key, as shown on page 20.
The frequency measurement mode is activated. “Hz” symbol
is displayed on the LCD. The digital display is expanded to
9999 digits. Only the auto mode is possible, no manual
range is possible.
13.2 Duty Cycle Measurement
With duty cycle measurement, we can determine the ratio
of pulse duration to cycle time of recurring square wave
signals. The duty cycle that is the percentage pulse duration
of signal is displayed on LCD i.e.
Duty cycle (%) =
pulse duration
cycle duration
X 100
“16.0
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Note : The applied frequency must remain constant during
the duty cycle measurement.
Set the function selector switch to VAC and press
yellow function key twice as shown on page 20.
The Duty cycle (%) mode is activated. “%” symbol is
displayed on LCD.
Connections are made the same way as for Voltage
measurement
measuring range for duty cycle and maximum allowable
voltage can be found in chapter “Specifications”.