Level Field - HP 1652B Getting Started Manual

Level Field
The trigger voltage Level field is located on the left side of the middle
row of fields and is used to set the voltage level at which the trigger
source waveform crosses the trigger marker. When the Level field is
selected, a pop-up will appear which allows the trigger level to be
changed by turning the knob. See the upper pop-up in figure 24-5.
When the trigger level is changed, the waveform moves on the display
to maintain the trigger point (where waveform edge crosses the trigger
level line). If the trigger level is set above or below the waveform,
trigger is lost and the waveform display will be unsynchronized.
The trigger level, when set with the knob, can be any voltage value
contained within the waveform display window in increments of
1%
of
full scale vertical voltage range (V/Div X 4). For example, if full scale
voltage range were 500 mV, trigger level could be set in increments of
20
mV.
Trigger level can also be entered from the keypad. A Numeric Entry
pop-up will appear when the first key is touched. See the lower pop-up
in figure 24-5.
ce
e
Y
(Calibration )
1 CH 1 ]
[ Positive J
I
Run mode 1
Single 1
Cluto-Trlg [on]
firmed by 71
CH1 ]
Knob entry
Nmerric
Entry
POP-UP
(7)
0
v
0
mv
\
Keypad entry pop-up H
Figure 24-5. Trigger Level Entry Pop-ups
HP 16528/16538
Front-Panel Reference
Trigger Menu
24-5