CONTROLS AND INDICATORS
(22) FOCUS
This focus control can be used to adjust the beam for
optimum focus.
Auto-Focus circuit automatically focusing, once this
control is adjusted it needs not be frequently readjusted.
(23) CAL
This is the calibration voltage output. 0.3 Vp-p at 1 kHz is
available in the form of a square wave signal.
(24) GN0
Ground terminal — use it to connect the instrument to the
earth ground.
HORIZONTAL AXIS CONTROLS
(25) HORIZONTAL DISPLAY
This control is used to select the horizontal display mode.
LED's indicate what mode has been selected.
A Only A Sweep is operative with the B Sweep
dormant.
ALT A Sweep alternates with the B Sweep. For
this mode of operation, the B Sweep
waveform appears as an intensified section on
the A Sweep.
A-INT-B Duration of the B Sweep appears as an
intensified section on the A Sweep.
B DLY'D Only Delayed B Sweep is operative.
DUAL A Sweep and B Sweep operate inde-
pendently. For this mode the two sweeps are
triggered by the A Trigger source and B Trigger
source respectively.
X-Y CH1 becomes the Y-axis and CH2 the X-axis
for X-Y operation.
The settings of the vertical MODE and TRIG
MODE are ineffective.
(26) A SWEEP TIME/DIV, B SWEEP TIME/DIV
A SWEEP TIME/DIV This outer control is used to set the
A Sweep time in 23 ranges in 1-2-5
sequence from 20ns/div to 0.5s/div.
B SWEEP TIME/DIV This center control sets the B Sweep
time in 20 ranges in 1-2-5 sequence
from 20ns/div to 50ms/div. This
control is constructed to make it
impossible to set the B Sweep time
slower than the A Sweep time. No
fine adjustment is available for the B
Sweep time.
(27) A VAR/PULL CHOP F. SELECT
This control is the innermost control on the SWEEP
TIME/DIV control. It is the fine adjustment for the A
Sweep time. When it is turned fully clockwise to the CAL
position,
the A Sweep time is calibrated to the setting of
the SWEEP TIME/DIV control.
PULL CHOP F. SELECT
The chopping frequency may be changed by pulling this
control outward. This is useful in cases where the input si-
gnal is synchronized to the chopping frequency.
(28) UNCAL
This LED lights to indicate that the A VAR control is not set
to the CAL position and thus that the A Sweep time is not
calibrated.
(29) DELAY TIME MULTIPLIER
This control adjusts the start time of the B Sweep to so me
delay time after the start of the Sweep.
The delay time may be set to values between 0.2 and 10
times the setting of the A SWEEP TIME/DIV control.
(30) ±TRACE SEP/HOLDOFF
$TRACE SEP
This outer control allows the adjustment of the B Sweep up to
4 divisions below the A Sweep, turning this control to
counterclockwise. This knob is effective when the Horizontal
Display is set to ALT. Even when the Horizontal Display is set
to DUAL, this knob is effective with the V mode set to CH1,
CH2 or ADD.
HOLDOFF
A dual control incorporating a switching function.
As a holdoff adjustment, it allows the adjustment of the
time between successive sweeps. Turning the control
counterclockwise from the NORM position lengthens the
holdoff time until just before the B ENDS A when the
hold-
off time is more than 10 times the NORM value.
In the B ENDS A position (fully counterclockwise), the A
Sweep is reset at the end of the B Sweep.
B ENDS A mode is applicable to the ALT, A-INT-B and B
DLY'D modes of HORIZONTAL DISPLAY.
(31) ««* POSITION/FINE PULL X10 MAG
A combination adjustment/switch control.
This control is not used for X-Y operation.
POSITION
Horizontal position coarse adjustment.
FINE PULL X10 MAG
Horizontal position fine adjustment. When this control is
pulled out, the sweep time is made
1
0 times shorter.
3-3
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