Slope Field; Auto-Trig Field - HP 1652B Getting Started Manual

Since the trigger level range is limited by the voltage values set for the
waveform window, the voltage level range can be easily determined.
Turn the knob in both directions until the Level field reads minimum
and maximum voltage. These voltage values are the trigger level limits
of the waveform window.
The default value for the Level field is 1.62 V (TTL preset value).
Slope Field
The Slope field is located in the middle of the middle row of fields. It
selects which edge of the trigger source waveform the oscilloscope will
trigger on. When Slope is selected, it will toggle between positive and
negative.
The default selection for the Slope field is Positive.
Auto-Trig Field
The Auto-Trig field is located on the right side in the middle row of
fields. It lets you specify whether or not the acquisitions should wait for
the specified trigger condition to occur. When the Auto-Trig field is
touched, the field will toggle between On and Off.
On. When auto-trigger is set to on, the oscilloscope waits for
approximately
1
sec. for a trigger to occur. If a trigger does not occur
within that time, whatever is in the acquisition memory is displayed and
"Auto triggered" is displayed:
l
if no signal is on the input, the oscilloscope will display a baseline.
l
if there is a signal but the specified trigger condition has not been
met within
1
set, the waveform display will not be synchronized to
a trigger point.
Off. When auto-trigger is set to off, the oscilloscope waits until a
trigger is received before the waveform display is updated. If a trigger
does not occur, the screen is not updated and "Waiting for Trigger" is
displayed.
The default selection for the Auto-Trig field is On.
-
Trigger Menu
24-6
HP 16528/1653B
Front-Panel Reference