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OD-514B, OD-515B & OD-545B INSTRUCTION MANUAL
[28]
MODE. Select the desired trigger mode.
AUTO
NORM
SINGLE Use for single sweep. (Except OD-514B)
TIME BASE OR HORIZONTAL CHANNEL (HORIZONTAL)
[18]
TIME/DIV. Select the sweep time of the A sweep. (A and B sweep in common for
OD-545B only, B TIME/DIV < A TIME/DIV)
[19]
SWP. UNCAL. Activates SWP VAR control. TIME/DIV [18] calibrations are exact
only when this key is not pushed in.
[21]
SWP. VAR. Vernier control of sweep time. When SWP.UNCAL [19] button is
pushed in, the sweep time can be made slower by a factor ≥ 2.5 of the indicated
value.
[34]
POSITION. Horizontal positioning control of the traces on the CRT display.
When turning this control clockwise the trace moves to the right on the CRT.
When turning this control anticlockwise the trace moves to the left on the CRT.
[33]
x 10 MAG. Expands horizontal deflection 10 times, multiplying per 10 the
horizontal sensitivity in X-Y operation mode and the effective sweep speed.
[38]
HORIZ. DISPLAY MODE (OD-545B only)
Select sweep modes as follows:
A:
A INT:
B:
B TRIG'D:
November 2000
When no triggering signal is applied or when triggering signal frequency
is less than 50 Hz, sweep runs in the free run mode.
When no triggering signal is applied, sweep is in a ready state and the
trace is blanked out. Used primarily for observation of signal ≤ 50 Hz.
Push to RESET: Operation (one-short triggering operation), and in
common as the reset switch. When these three buttons are disengaged,
the circuit is in the single trigger mode. The circuit is reset as this button
is pressed. When the circuit is reset, the READY lamp turns on. The
lamp goes out when the single sweep operation is over.
Main sweep (A sweep) mode for general waveform observation.
This sweep mode is used when selecting the section to be
magnified of A sweep, in preparation for delayed sweep. The B
sweep section (delayed sweep) corresponding to the A sweep is
displayed with a high intensity beam.
Display the delayed sweep (B sweep) alone.
Select between continuous delay and triggered delay.
Disengaged: For continuous
immediately after the sweep delay time set by A
TIME/DIV and B TIME/DIV switch and DELAY
TIME knob has elapsed.
Engaged:
For triggered delay. The B sweep starts when the
triggering pulse is applied after the sweep delay
time set by A TIME/DIV and B TIME/DIV switch and
DELAY TIME knob has elapsed.
(The triggering signal is used in common for both A sweep and B
sweep).
delay. The B sweep starts
Page 15
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