HP 54520 Series - Glitch Trigger Mode

Figure 5-14
Trigger
Glitch Trigger Mode
Glitch Trigger Mode
The glitch mode is like the pattern duration triggering, except a single
channel defines the pattern, with the additional time selections of 2.5 ns,
5 ns, and 10 ns.
Source--State Softkey
The source--state softkey selects the source and glitch polarity used for
triggering. The sources available are any channel input and (on the two
channel models) external trigger input. You can specify the state for the
source selected as either a high or a low, where high is higher than the
current trigger level, and low is lower than the current trigger level. You can
select only one source or state at a time. The current selection is highlighted
in inverse video.
Level Softkey
The level softkey sets the trigger level used by the source--state
softkey. The choices are adjust or center.
Adjust Adjust allows the flexibility for setting exact triggering points
and specifies levels used in the other triggering modes. The trigger level
range is 12 divisions from the center of the screen.
Center Center has the oscilloscope automatically set the trigger level to
the sarne value as the channel offset for the selected source.
GLITCH TRISGER
j edge patt state
[delay tv
i source-—state s
| CTT
~CEBTESSc enter
84542233
- holdett
ete 40.000 ns
!
5-21