Source Key; Level Key; Slope Key - HP 54501A Operation Reference
Front panel operation reference
digitizing oscilloscope
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Also See for 54501A:
- Programming reference manual (386 pages) ,
- Service manual (90 pages) ,
- Getting started manual (46 pages)
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Trig'd/auto Key
EDGE TRIGGER
tr ig'd Mouto'
state delay
tv
ho l doff
t
5450 1 !'Wt 1 2
source Key
level Key
. slope Key
hold off Key
The trig'dlauto selection is a toggle selection and lets you select hetween
the two. The current selection is displayed in inverse video. This field is
available in all trigger modes.
When in the triggered mode the oscilloscope will not acquire data until all
of the trigger requirements have been satisfied. In the auto mode the
oscilloscope will generate a trigger if none is present. If no trigger is
found it will generate a trigger and display acquired data.
message will be displayed in the upper left corner of the screen.
If the oscilloscope is auto-triggered and the sweep speed is 200 ms/div,
500
ms/diY, 1 s/div, 2 s/div, or
mode and display data points as they are acquired (see Chapter 4,
"Timebase Menu').
Pressing this key allows you to select the trigger source. The options are
channels 1-4. The current selection is highlighted in inverse video.
The level key allows you to set the trigger level. The range on this ftmction
is ± 6 divisions from center. It provides flexibility for setting exact
triggering points and specifies levels used in the more sophisticated
triggering modes .
This field is not labeled, however, the available selections are graphic
representations of the rising edge and failing edge The current selection
is highlighted in inverse video.
Pressing the holdoff key assign e s the entry devices to control holdoff.
Holdoff disables the trigger circuit for a selectable time period after the
trigger event. Holdoff is selected in time units, from 40 ns to
5
s/div, it will operate in the triggered scroll
A
status
320
ms.
Trigger Menu
6-3
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- Introducing the Hp 54501A
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