Fnirsi 2C23T Manual página 53

2.Turn on the device and connect it to the computer using a USBA to Type-C data
cable.
3. Drag the prepared startup logo into the device USB drive.
4. After the operation is completed, the custom logo will be updated the next
time you start the computer.
Notice:Before changing the logo, please carefully check the file name,
image pixel size, format, etc.
8.Common In-circuit testing methods
1.Battery or DC voltage measurement
The battery voltage is generally below 80V, and other DC voltages are uncertain.
It is necessary to adjust the gear according to the actual situation, if it is below
80V, use 1X gear, and if it is above 80V, use 10 gear × Gear position.
(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 periodic signals (DC voltage belongs to
periodic signals)
②Set the oscilloscope to the corresponding gear (default to 1X gear after
startup)
③Set the oscilloscope to DC coupling mode
④Insert the probe and pull the switch on the probe handle to the corresponding
gear position
⑤Ensure that the battery has power or DC voltage output
⑥Connect the probe clamp to the negative pole of the battery or DC negative
pole, and connect the probe to the battery or DC negative pole
Positive electrode
⑦Press the [AUTO] button once, and the DC electrical signal will be displayed.
Note that battery voltage or other DC voltages belong to DC signals, which
have no curve or waveform, only a straight line with up and down offset, and
the peak to peak VPP and frequency F of this signal are both 0
档位选择
Gear selection
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