Fnirsi 2C23T Manual página 59

⑨When there is a communication signal on the communication line, the
oscilloscope will capture it and display it on the screen. If it cannot be
captured, it is necessary to try adjusting the time base (1mS~6nS) and
triggering voltage (red arrow) multiple times for debugging
10. Infrared remote control receiver measurement
The infrared remote control signal generally ranges from 3 to 5, with a
maximum test voltage of 80V in X gear. Therefore, using 1X gear for testing
automotive communication signal signals is sufficient (both the probe
①Firstly, set the oscilloscope to Normal trigger mode (default to Auto trigger
mode after startup). The Normal trigger mode is specifically used to measure
non periodic digital signals. If use Auto, the trigger mode cannot capture non
periodic signals, and the infrared remote control signal belongs to non
periodic digital coding signal.
②Set the oscilloscope to 1X position (default to 1X position after startup).
③Set the oscilloscope to DC coupling mode.
④Insert the probe and move the switch on the probe handle to the 1X position.
⑤Connect the probe clamp to the ground terminal (negative pole) of the
infrared receiver motherboard, and connect the probe to the data pin of the
infrared receiver head.
⑥Set the vertical sensitivity to 1V gear.
⑦Set the time base to 20uS.
⑧Adjust the trigger red arrow position to approximately 1 large grid distance
above the yellow arrow position on the left.
⑨At this point, use the remote control to send a signal to the infrared receiver,
and a waveform will appear on the oscilloscope.
Gear selection
and oscilloscope are set to 1X gear)
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