User Manual
123B/124B/125B 
Users Manual 
30 
3. Use YZ to adjust the Trigger level continuously. 
Observe that the trigger icon on the third time 
division line indicates the trigger level. 
4. Use WX for Trigger on either positive slope or 
negative slope of the chosen waveform. 
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Select Trigger Parameters 
To trigger on the Input A waveform and configure the auto 
range trigger for waveforms down to 1 Hz: 
1. Push  to open the Scope and Meter button bar. 
2. Push 2 to open the SCOPE SETTINGS menu. 
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