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chronized. Setting between 0.5 s and 0.1 ms
result in FRAME while those between 50 ps and
20 ns result in LINE sync.
@> E X T TRIG Jack
Input terminal for external trigger signal.
(§) HORIZ. DISPLAY Switch
Four-position lever switch; used to select the horizontal
display mode.
A:
Only A sweep is operative with the B sweep dor-
mant.
ALT:
A sweep alternates with the B sweep. For this
mode of operation, the B sweep appears as an in-
tensified section on the A sweep.
B DLY'D: Only delayed B sweep is operative.
X-Y:
Channel 1 becomes the Y axis and channel 2
becomes the X axis for X - Y operation. The set-
ting of the vertical MODE and trigger MODE
switches have no effect.
(§) MODE Switch
Four-position lever switch; selects triggering mode.
AUTO:
Triggered sweep operation. When trigger signal
is present, automatically generates sweep (free
runs in absence of-trigger signal.)
NORM:
Normal triggered sweep operation. No trace is
presented when a proper trigger signal is not ap-
plied.
SINGLE:
Single sweep operation. Note that in this mode,
simultaneous observation of both the A and B
sweeps is not possible.
I—NOTE:
For dual trace, single sweep operation, ver-
tical MODE must not be set to A L T . Use the
CHOP mode instead.
RESET:
This is the reset switch for single sweep opera-
tion. Switching the RESET side initiates a single
sweep which will begin when the next sync trig-
ger occurs.
@) Ready Indicator
In SINGLE triggering mode, lights when trigger MODE
switch is set to RESET and goes off when sweep is com-
pleted.
®
A SWEEP TIME/DIV, B SWEEP TIME/DIV Controls
A SWEEP TIME/DIV:
Horizontal coarse A sweep time selector.
Selects calibrated sweep times of 20 ns/div to
0.5 s/div in 23 steps when A VARIABLE control
@
is set to C A L position (fully clockwise).
B SWEEP TIME/DIV:
Coarse horizontal B sweep time selector.
Selects sweep times of 20 ns/div to 50 ms/div in
20 steps.
B sweep time selector should be set slower than A
sweep time.
®
A VARIABLE Control
Fine A sweep time adjustment. In the fully clockwise (CAL)
position, the sweep time is calibrated.
No fine adjustment is available for the B sweep time.
(§)
POSITION, FINE, PULL x 10 MAG Controls
Rotation adjusts horizontal position of trace. For X-Y opera-
tion, this controls have no effect.
^ • P O S I T I O N :
Horizontal position coarse adjustment.
FINE, PULL x 10 MAG:
Rotation becomes fine adjustment of horizontal
position of trace. When pulled out, ten times
sweep expands.
Push-pull switch alternately turns x 10 MAG off
and on (ten times sweep expansion).
@
DELAY TIME MULTIPLIER Control
Adjusts the start time of the B sweep to some delay time
after the start of A sweep. The delay time may be set to
values between 0.2 and 10 times the setting of the A
SWEEP TIME/DIV control.
®
T T R A C E S E P , HOLDOFF Controls
T TRACE SEP: Adjusts vertical
sweep and B sweep (control has effect only
in the A L T of HORIZ. DISPLAY).
Counterclockwise rotation increases separa-
tion; B sweep moves down with respect to
1
A sweep up to 4 divisions.
HOLDOFF:
Rotation
period beyond sweep duration).
Counterclockwise rotation increases holdoff
period from NORM to max more than five
times before the B ENDS A position.
In the B ENDS A position ( fully counter-
clockwise), the A sweep is reset at end of
the B sweep. And therefore intensity of B
sweep increases to provide the A sweep.
B ENDS A mode is applicable to the A L T , B
DLY'D modes of HORIZ DISPLAY.
separation
between
adjusts holdoff
(trigger
inhibit
A
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