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Operating Instructions
1780R-Series Operator’s Manual
3–45
7. Touch <CAL AMPL ZERO SET> to obtain a menu on the
waveform CRT for adjusting the calibrator zero level. Adjust the
large knob to overlay the two calibrator waveforms. Press the
front-panel REFERENCE SET button to record this zero setting.
8. Touch <VOLT CURSORS ZERO SET>to obtain a Voltage
Cursor menu on the waveform CRT. Use the large knob to move
cursors, touching the <CURSOR 1 / CURSOR 2> area to toggle
between Cursors One and Two. When cursors are aligned, press
REFERENCE SET to reset the displayed voltage difference to
zero.
9. Touch <CAL SIGNAL ON / OFF> until <ON> is outlined. (CAL
signal is not available in <CAL AMP ZERO SET>.)
a. Select <VERT CAL>. Use the large knob to adjust the
vertical gain for a 1 V calibrator signal display on the
waveform CRT.
b. Select TWO LINE sweep with VAR sweep off.
c. Push the front-panel TIME button to turn on the timing
cursors. Reduce the display intensity if necessary to view
the timing cursor dots.
d. Touch the <CURSOR 1 / CURSOR 2> area of the screen
until <CURSOR 1> is outlined. Use the large knob to
move Timing Cursor 1 approximately 1 major division in
from the left edge of the graticule.
e. Select <CURSOR 2> and use the large knob to move it
100 msec to the right of Timing Cursor 1, as indicated on
the CRT readout.
f. Touch <HORIZ CAL>. The large knob will now adjust
sweep length (time) with respect to the graticule. Adjust
for 10 divisions between cursor dots.
g. Push the front-panel TIME button to turn off the timing
cursors. Readjust the readout intensity if necessary.
h. Apply a 1.0 volt signal to the EXT HORIZ input. Ensure
that the signal is properly terminated in 75
W.
Operating Instructions
1780R-Series Operator’s Manual
3–45
7. Touch <CAL AMPL ZERO SET> to obtain a menu on the
waveform CRT for adjusting the calibrator zero level. Adjust the
large knob to overlay the two calibrator waveforms. Press the
front-panel REFERENCE SET button to record this zero setting.
8. Touch <VOLT CURSORS ZERO SET>to obtain a Voltage
Cursor menu on the waveform CRT. Use the large knob to move
cursors, touching the <CURSOR 1 / CURSOR 2> area to toggle
between Cursors One and Two. When cursors are aligned, press
REFERENCE SET to reset the displayed voltage difference to
zero.
9. Touch <CAL SIGNAL ON / OFF> until <ON> is outlined. (CAL
signal is not available in <CAL AMP ZERO SET>.)
a. Select <VERT CAL>. Use the large knob to adjust the
vertical gain for a 1 V calibrator signal display on the
waveform CRT.
b. Select TWO LINE sweep with VAR sweep off.
c. Push the front-panel TIME button to turn on the timing
cursors. Reduce the display intensity if necessary to view
the timing cursor dots.
d. Touch the <CURSOR 1 / CURSOR 2> area of the screen
until <CURSOR 1> is outlined. Use the large knob to
move Timing Cursor 1 approximately 1 major division in
from the left edge of the graticule.
e. Select <CURSOR 2> and use the large knob to move it
100 msec to the right of Timing Cursor 1, as indicated on
the CRT readout.
f. Touch <HORIZ CAL>. The large knob will now adjust
sweep length (time) with respect to the graticule. Adjust
for 10 divisions between cursor dots.
g. Push the front-panel TIME button to turn off the timing
cursors. Readjust the readout intensity if necessary.
h. Apply a 1.0 volt signal to the EXT HORIZ input. Ensure
that the signal is properly terminated in 75
W.