TB 9-6625-2274-50
(c) Press AMPLITUDE MODE EDGE POLARITY pushbutton.
(d) Press AMPLITUDE MODE FREQ
pushbutton to highlight 100 kHz.
(e) Adjust UNITS/DIV dial to display 10 V/D.
(f) Press OUTPUT ON pushbutton on.
(3) Rotate tunnel diode pulser trigger level knob fully ccw.
(4) Set digitizing oscilloscope probe attenuation to 1 and acquire signal. Set
digitizing oscilloscope sensitivity to 50 mV/D and sweep speed to 5 s/D.
(5) Rotate tunnel diode pulser trigger level knob slowly ccw until digitizing
oscilloscope displays a stable triggered level. Adjust digitizing oscilloscope offset to view
entire waveform. Digitizing oscilloscope will display a positive-going pulse with an
amplitude of approximately 5 divisions.
(6) Adjust digitizing oscilloscope sensitivity and offset to display a waveform of
exactly 5 vertical divisions.
(7) Adjust digitizing oscilloscope sweep speed to 5 ns/D. Adjust digitizing
oscilloscope delay to align leading edge of waveform on the third vertical graticule line.
(8) Set digitizing oscilloscope sensitivity to 5 mV/D. Adjust offset to align top of
waveform to center horizontal graticule.
(9) Store waveform in digitizing oscilloscope memory.
(10) Press OUTPUT ON pushbutton off and position TI controls as listed in (a)
through (d) below:
(a) Press AMPLITUDE MODE NUMBER OF DIV (MULTIPLIER
pushbutton to display X 5 DIV.
(b) Adjust UNITS/DIV dial to display 50 mV/D.
(c) Press AMPLITUDE MODE FREQ
to highlight 1 MHz.
(d) Press VARIABLE ON pushbutton on.
(11) Remove tunnel diode pulser from TI. Connect OUTPUT to digitizing
oscilloscope and press OUTPUT ON pushbutton on.
(12) Acquire signal using digitizing oscilloscope. Adjust digitizing oscilloscope offset
and TI VAR dial for an indication of 5 divisions.
(13) Adjust digitizing oscilloscope delay to align leading edge of waveform on the
third vertical graticule line.
(14) Set digitizing oscilloscope sensitivity to 5 mV/D and sweep speed to 5 ns/D.
Adjust digitizing oscilloscope offset to align top of waveform to center horizontal graticule.
(15) Recall waveform in digitizing oscilloscope memory from (9) above. Adjust
digitizing oscilloscope offset to align the two signals.
NOTE
Do not use digitizing oscilloscope delay or sweep speed to align
the two signals. Aberration amplitudes will not be exact.
(16) Aberration amplitudes will not deviate more than 1 vertical division.
(17) Press OUTPUT ON pushbutton off.
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