HP 54111D FRONT PANEL USERS GUIDE

User Manual: HP-54111D-Front-Panel-Users-Guide HP

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TIMEBASE MENU
Description of how the Timebase
horizontal display.

menu is used to control the

Section Contents

-

Overview

The Timebase menu, which is automatically selected after an AUTOSCALE is performed, allows you to control the horizontal display
through the TIME/DIV, DELAY, and Delay Reference functions. This
menu also allows you to select a triggered function. It defaults to
automatic trigger.

TIME

/
DIV

DELAY

Delay
Ref at
mm

Auto/
m
Sweep
I

Figure 5-1. Timebase Menu.

Timebase Menu
5-1

Time/Div Key

The TIME/DIV key allows you to vary the time scale on the
horizontal axis from 1 s/div to 500 psidiv. This is located at the top of
the function menu.
You can use any of the entry devices to vary this scale:
l
using the number pad and appropriate ENTER key, the results
in sensitivity can be adjusted with up to three digits of
resolution.
l using the knob, you can change the sweep speed in a l-2-5
sequence.
l
using the increment/decrement keys, you can also change the
sweep speed in a l-2-5 sequence.
This key affects the sample rate at which the scope acquires data.
The sample rate for the selected sweep speed is displayed to the
right of the sweep speed setting.
In the real-time mode and with acquisition stopped, this key also
controls the zoom feature (see Chapter 7, “Display Menu”).

Timebase Menu
5-2
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