48
HPS10 PersonalScope
TM
Trigger modes
Trigger modes
”norm” = Normal trigger: A triggering (or manual
trigger) must occur before the sample memory is
filled. Use this mode when you want to start
displaying the signal when it reaches a preset
threshold value. (Fig 38)
“run” = Auto-trigger mode, the scope automatically
triggers if no triggering occurs for a fixed period of
time. This position is used most frequently and
should always be used for measuring DC voltages in
particular. (Fig 39)
“once” = Sampling starts after a trigger. Afterwards,
the scope switches to ‘HOLD’-mode. Use this mode to
detect e.g. a short, once-only voltage peak. (Fig 40)
“roll” = Roll-mode is available for timebases of 1s/
div or slower. Sampling is continuous and the screen
starts rolling as soon as it is full. Use this position for
“recording” slow moving dc signals. (Fig 41)
Notes:
• Pressing the Trigger key generates a manual
triggering (except in ‘HOLD’-mode)
• Changing the trigger mode switches the autorange
mode immediately off.
• At time base of 1s/div and slower, the input
coupling is DC-only
• Normal triggering is the only triggermode for
timebases of 2µs/div or faster because of the
oversampling method.
• Keep pressing this key during “hold” mode
stores the current screen into memory.
• When no markers are displayed, the cursorkeys
are set for changing the timebase or input
sensitivity when no keys are pressed during 10
seconds.
Fig 38 Fig 39
Fig 40 Fig 41
Trigger gab
Trigger opening
Niveau de démarrage
Triggeröffnungsanzeige
HPS10_man.pub
page 48
Wednesday, April 03, 2002 09:22
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