you need an oscilloscope to repair you phone
by Nancy N. DIY diagnostic and car repair toolsThere many tools used on phone repair service, such as phone repair
soldering iron, phone power supply and nand test fixture. except these
tool, is there essential device for this work? yes, indeed, you need an
oscilloscope to repair you phone.
But, Why use an UNI-T UPO8102S oscilloscope to repair you phone?
In the process of mobile phone repair, the oscilloscope is mainly used
to detect the voltage and signal waveform of the key points on the main
board (DC power suppply of each part of the mobile phone, 26MHz main
clock, 32.768kHz real-time clock, IQ signal of intermediate frequency
output, ect), which can be delineated. Range, quickly find the point of
failure. Therefore, the oscilloscope has been widely used in mobile
phone repair.
The difference between a multimeter, power supply and osciloscope
Because the oscilloscope looks at the complete waveform, it displays the
voltage value from the lowest value to the highest value of the
trajectory, so the measurement is often the highest value. The value
measured by the multimeter is the average value, which is different from
the highest value.
For example, using a multimeter to measure the voltage of civilian
electricity is 220V, which is the average. But when you look at it with
an oscilloscope, you can see about 311V, which is the peak. That is the
maximum. The multimeter has six and a half nine and a half, but it can
only measure stable values. The advantage of the oscilloscope is that is
has a large dynamic range, can monitor the time and frequency, can have
a trigger signal, and can compare, capture, and store multiple
channels.
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Created on Aug 26th 2018 03:12. Viewed 226 times.