Tenma 72-10175 User Manual page 21

Input a signal to a channel of the oscilloscope
The oscilloscope is equipped with four channels plus external trigger.
Please input signal in the following steps:
1. Set the attenuation switch on the probe as 10X and connect the probe on the oscil-
loscope with CH1. Allign the slot in the probe connector at the end on BNC of CH1
and insert, then, turn right to lock the probe. Finally, attach the tip of probe and ground
nip to the Connector of Probe compensator.
2. Set the CH1 probe attenuation of the oscilloscope to X10. (The default is X1).