6–3
SNGL Pressing this button places the scope in Single-Shot Mode,
where it waits for a single trigger to occur, then displays the
signal and stops acquiring. If no signal occurs, the button can be
pressed again to show the signal being observed without a
trigger.
Press SNGL when in RIS Mode and the instrument will wait for
all the trigger events required to build up one signal on screen
before it stops. This may require as many as 4000 trigger
events.
Single-Shot Roll Mode behavior is the same as standard Single-
Shot but without the need to press the button a second time to
show the signal.
DELAY — is used to adjust the pre- or post-trigger delay. Pre-trigger
adjustment is available from zero to 100 % of the full time-scale
in steps of 1 %. The pre-trigger delay is illustrated by the vertical
arrow symbol at the bottom of the grid. Post-trigger adjustment
is available from 0 to 10 000 divisions in increments of 0.1 of a
division. The post-trigger-delay value is labeled in seconds and
is located in the on-screen Trigger Delay field.
ZERO — sets the trigger delay at zero, the trigger instant at the left-
hand edge of the grid.
TIME/DIV — selects the time per division in a 1–2–5 sequence. The
time/div setting is displayed in the Acquisition Summary field.
LEVEL — adjusts the trigger threshold. The amplitude of trigger signals
and the range of trigger levels is limited: ± 5 screen divisions
with a channel as trigger source; ± 0.5 V with EXT as trigger
source; ± 5 V with EXT/10 as trigger source; and Inactive with
Line as trigger source. The trigger sensitivity is better than a
third-of-a-screen division.
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