TB 9-6625-132-24
(7) Adjust oscilloscope controls to measure both rise time and fall time of TI output
signal. If rise time and fall time are not less than 25 ns, perform b below.
(8) Set TI AMPL control to minimum.
b. Adjustments
(1) Connect TI OUTPUT to oscilloscope channel 1 input using a X10 attenuator.
(2) Set TI controls as indicated in (a) through (g) below.
(a) FREQUENCY Hz
20
105
(b) MULTIPLIER
(c) Waveform pushbutton
(Square)
(d) VAR SYMM
off
(e) FREE RUN
in
(f) ATTENUATOR
0 dB
(g) AMPL (variable)
fully CCW
(3) Connect TI TRIG OUTPUT to oscilloscope channel 2 input.
(4) Set oscilloscope vertical control to 200 mv/div and adjust for a 5 division display.
(5) Change oscilloscope vertical control to 20 mv/div and adjust variable capacitor C2011
for a peak to peak aberration of 1 major graticule division on the displayed waveform. This
aberration will appear at both the top and bottom of the waveform. (R)
(6) Set TI AMPL control to minimum.
13. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.