Fnirsi 2C23T Manual página 56

5. Household electric supply 220V or 110V measurement
Household electricity is generally 180-260V, with a peak to peak voltage of
507-733V. In some countries, household electricity is 110V, with a peak to
peak voltage of 310V. The highest measurement for 1X gear is 80V, and the
highest measurement for 10X gear is 800V (10X gear can withstand up to
1600 peak to peak). Therefore, it is necessary to set it to 10X gear, which
means that both the probe and oscilloscope must be switched to 10X gear.
①Firstly, set the oscilloscope to Auto trigger mode (default to Auto trigger mode
after startup), which is used to test periodic signals (50Hz for household
appliances is considered a periodic signal).
②Set the oscilloscope to 10X gear (default to 1X gear after startup).
③Set the oscilloscope to DC coupling mode.
④Insert the probe and move the switch on the probe handle to the 10X position
⑤Ensure that there is a household electrical output at the tested end.
⑥Connect the probe clamp and probe to the two wires of the household
appliance, without distinguishing between positive and negative poles.
⑦Press the [AUTO] button once, and the waveform of the household electricity
will be displayed. If the waveform after AUTO adjustment is too small or too
large, you can manually adjust the waveform size in zoom mode.
6. Power ripple measurement
If the power output voltage is below 80V, set it to 1X gear (both the probe
and oscilloscope are set to 1X gear). If it is between 80-800V, set it to 10X gear
(both the probe and oscilloscope are set to the same gear)
①Firstly, set the oscilloscope to Auto trigger mode (default to Auto trigger mode
after startup), which is used to test cycle signals.
②Set the oscilloscope to the corresponding gear (default to 1X gear after
startup).
Gear selection
Gear selection
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