Controls, Connectors, and Indicators-2465 Operators
is
set
to RUN AFT DLY. When the
B
TRIGGER
MODE
is
set to TRIG AFT DLY, intensified zones
appear on the A Sweep only if proper B Sweep
triggering occurs before the end of the A Sweep.
When set to RUN AFT DLY, the position of the
Reference zone
is
controlled by the A REF OR
DLY POS control as before, and the position of
the Delta zone
is
controlled by the A control. In
TRIG AFT DLY mode, if the B Sweep
is
triggered,
the positions of both intensified zones are deter-
mined by the first triggering events that occur
after delay times
set
by the A REF OR DLY POS
and the A controls have elapsed.
When more than one trace
is
displayed using ALT
VERT MODE, and if the A Sweep
is
being trig-
gered from
a
single source, with the At or l/At
function selected, the Reference zone will appear
on the first selected trace from the following
sequence: CH 1, CH
2,
ADD, CH
3,
then CH
4.
The Delta zone appears on the second selected
trace, and both zones appear on any additional
traces. With CHOP VERT MODE or multiple-
channel triggering, both zones appear on all traces.
Pulling the B SECIDIV knob to the out position
will cancel the Delta Volts (AV) function, if
it
is
activated. Pushing in the B SECIDIV knob to
the locked position will cancel the NO AV WITH
DELAY message on the crt readout, if
it
is
being
displayed.
PULL-ADJ CH
2
DLY-When the A SECIDIV
switch
is
set
to
5
ns per division, pulling the
B SECIDIV knob to the out position activates
the Channel
2
delay-offset (CH
2
DLY) adjust-
ment feature. See "Matching Channel
2
Delay" in
Section
5,
"Operator's Checks and Adjustments,"
to use this feature.
TURN-ALT-Pulling the B SECIDIV knob to the
out position, then turning
it
to a faster sweep-
speed setting than the A SECIDIV sweep-speed
setting, produces the Alternate (ALT) Horizontal
Display Mode. The A Sweep with an intensified
zone will be alternately displayed with the B
Sweep, provided the B TRIGGER
MODE
is
set
either to RUN AFT DLY or to TRIG AFT DLY
with a proper B triggering signal occurring before
the end of the A Sweep. The position of the
intensified zone on the A Sweep indicates the
approximate delay of the
B Sweep, and the length
of the intensified zone indicates the approximate
B Sweep duration
set
by the B SEC/DIV switch.
If either At or l/At
is
also activated, intensified
zones and associated
B
Sweeps will be established
in the same manner as described in "PULL-
INTEN."
PUSH-B-Pushing
in the B SECIDIV knob when
the B SECIDIV switch
is
set
to
a
faster sweep
speed than the A SECIDIV switch presents only
the B Sweep trace(s) on the crt display.
SECIDIV VAR Control-Continuously varies the
sweep speed between settings of either the A or the
B
SECIDIV switch. This control affects the A Sweep
speed when the A and B SECIDIV switches are
locked together. When any of the delayed-sweep
horizontal modes are displayed, the control affects
only the
B
Sweep speed.
Fully counterclockwise rotation extends the sweep
speed of the slowest A SECIDIV switch setting
(0.5
s
per division) to 1.5
s
per division. Fully clock-
wise rotation (detent position) produces the sweep
speed indicated by the position of the SECIDIV
switches. The crt readout displays the actual time-
per-division scale factor for all settings of the VAR
control.
This control produces fine resolution over
a
portion
of
its
range, after which it changes to coarse reso-
lution. It reenters the fine-resolution range upon
reversing the direction of rotation.
TRACE SEP Control-Provides for vertical position-
ing of the B trace downward from the A trace when
TURN-ALT Horizontal Display Mode
is
selected.
Counterclockwise rotation moves the
B
trace down-
ward. At the fully clockwise stop position of the
control, there
is
no separation between the A and B
traces. When the PUSH-B Horizontal Display Mode
is
selected and when either At or l/At measurement
mode
is
active, the TRACE SEP control provides for
vertical positioning of the trace or traces associated
with the A control.
Horizontal POSITION Control-Sets the horizontal
position of the sweep displays on the crt. Clockwise
rotation of the control positions the display to the
right. This control produces fine resolution over
a
portion of
its
range, after which
it
changes to coarse
resolution. It reenters the fine-resolution range upon
reversing the direction of rotation. The Horizontal
POSITION control does not affect the
X-Y
display
position on the crt.
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