HP 54645A, Руководство пользователя и сервисное руководство

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To adjust oscilloscope vertical scaling
This exercise guides you through the vertical keys, knobs, and status line.
1
Center the signal on the display using the Position knob.
The Position knob moves the signal vertically; the signal is calibrated. Notice
that as you turn the Position knob, a voltage value is displayed for a short
time, indicating how far the ground reference is located from the center of
the screen. Also notice that the ground symbol moves with the Position knob.
Measurement Hints
If the channel is DC coupled, you can quickly measure the DC component of the
signal by simply noting its distance from the ground symbol. If the channel is AC
coupled, the DC component of the signal is removed, allowing you to use greater
sensitivity to display the AC component of the signal.
2
Change the vertical setup and notice that each change affects the
status line differently. You can quickly determine the vertical setup
from the status line in the display.
•
Change the vertical sensitivity with the Volts/Div knob and notice
that it causes the status line to change.
•
Press
1
(for HP 54645A) or
A1
(for HP 54645D).
A softkey menu appears on the display, and the channel turns on
(or remains on if it was already turned on).
Front-Panel Overview
To adjust oscilloscope vertical scaling
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