Checking Received Waveforms; How To Connect The Oscilloscope - Fuji Electric FLR-3 Instruction Manual

6.5.6. Checking received waveforms

The unit has high-voltage part. Be sure to ask our service personnel for the steps described below.

6.5.6.1. How to connect the oscilloscope

Open the cover, and connect an oscilloscope to the check pin on the printed board according to the following figure.
The unit has high-voltage components. Do not touch the parts other than those specified below.
TRG
(CK5)
INF-TN3FLR-E
WID
(CK6)
GND
(CK1, CK9)
SIG
(CK10)
CH1 CH2 CH3 or EXT TRIG
Oscilloscope
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