Adjustment Procedures
TDS 420A, TDS 430A & TDS 460A Service Manual
5-17
H Press the main-menu button Recall Factory Setup.
H Press the side-menu button OK Confirm Factory Init.
d.
Modify the initiali zed front-panel control settings:
H Set vertical SCAL E to5mV.
H Press VERTICAL MENU. Then press the main-menu button
Coupling. Press the side-menu button Ω to toggle to 50 Ω coupling.
H Press SHIFT.ThenpressACQUIRE MENU.
H Press the main-menu button Mode. Then press the side-menu button
Hi Res.
H Press CLEAR MENU.
2. Adjust the Probe:
a. Display and store the reference signal:
H Set the high-amplitude output of the generator for 60 to 100 V at the
input to the pulse generator head (see Figure 5--8).
H Advance the triggering level of the pulse generator head until a five
to six division square wave appears on screen.
H Push SET LEVEL TO 50% as required to trigger the signal.
H Advance the horizontal SCALE to5ns.
H Press HORIZONTAL MENU.
H Press the main-menu button Trigger Position; and press the
side-menu button 10%.
H Push SHIFT.ThenpressSAVE WAVE FORM.
H Press the main-menu button Save Waveform. Then press the
side-menu button To Ref 1.
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