Controls, Connectors,
and
Indicators
5-20
NORM
SGL SEQ
B-Trigger Modes:
MENU
RUN
AFT
DLY
TRIG AFT
DLY
Sweep is triggered and runs when an adequate
triggering
signal is applied. In the absence
of
an
adequate triggering
signal, the A Sweep does
not
run, except when the input coupling
of
the trigger-
source channel is set
to
GND. If the selected source
is
Vert, and the Add vertical display is selected, the
A
Sweep free runs if Channel 1 and Channel 2 input
coupling are both set
to
GND.
When armed by pushing the
lower MODE button, the
sweep runs once
for
each
of
the traces defined by
the
following controls: Vertical MODE, A and B
SEC/DIV, and
~t
or
1/&
Each sweep requires a
distinct A-Sweep triggering eventt? !q The READY
indicator remains illuminated until the
final trace in
the sequence is
completed.
At
the end
of
the display
sequence, scale-illumination flashes and the readout
display is written once
to
present the scale factors
and other readout data.
Only with the available CIT, the Menu indicator
lights when a menu is displayed and when the trigger
controls are directed
to
the B Trigger with a Delay-
by-Events
or
Logic Trigger function. Pressing
A/B/MENU with the A-Sweep
displayed, not
intensified, displays the main
CIT
menu and lights
MENU. Pressing the upper trigger Mode button with
the B
Sweep active (Inten, Alt,
or
B horizontal mode)
and RUN AFT DL Y B-Trigger mode
also displays the
CIT
main menu and lights the indicator. Pressing the
lower trigger Mode button while MENU is on cancels
any Logic Trigger
or
Delay-by-Events mode and
turns MENU off.
The B
Sweep runs immediately after the delay time
set by A
SEC/DIV,
~
REF OR DL Y POS, and, if
~t
or
1/~t
is active,
~.
The B Sweep runs when triggered after the set
delay, determined by the same controls as for RUN
AFT DL
Y,
provided the A Sweep has not terminated.
2465A/2455A/2445A Operators