To Use Delayed Sweep - HP 54645A User's And Service Manual

Front-Panel Overview

To use delayed sweep

To use delayed sweep
Delayed sweep is a magnified portion of the main sweep. You can use
delayed sweep to locate and horizontally expand part of the main sweep for a
more detailed (high-resolution) analysis of signals.
The following steps show you how to use delayed sweep. Notice that the
steps are very similar to operating the delayed sweep in analog oscilloscopes.
Connect a signal to the oscilloscope and obtain a stable display.
1
Press
2
Main/Delayed
Press the Delayed softkey.
3
The screen divides in half. The top half displays the main sweep, and the
bottom half displays an expanded portion of the main sweep. This expanded
portion of the main sweep is called the delayed sweep. Since both the main
and delayed sweeps are displayed, there are half as many vertical divisions so
the vertical scaling is doubled. Notice the changes in the status line. The top
half also has two solid vertical lines called markers. These markers show
what portion of the main sweep is expanded in the lower half. The size and
position of the delayed sweep are controlled by the Time/Div and Delay
knobs. The Time/Div next to the
The delay value is displayed temporarily at the bottom of the display.
To display the delay value of the delayed time base temporarily at the
bottom of the screen, press
To change the delay for the delayed sweep window, turn the Delay knob.
To change the Time/Div for the delayed sweep window, turn the Time/Div
knob.
To change the Time/Div for the main sweep window, select the main
sweep mode. Then turn the Time/Div knob.
2-32
.
symbol is the delayed sweep sec/div.
Main/Delayed
.