TB 9-6625-2274-40
r. Press OUTPUT ON pushbutton off and remove oscilloscope connections. Connect
multimeter positive lead to A8TP1202 (fig. 1) and negative lead to A8TP1200 (fig. 1).
s. Adjust A8Rl300 (fig. l) for a multimeter indication of +2.73 V dc 0.03 V.
t. Remove multimeter positive lead and connect to A8TP1300 (fig. 1). Adjust A8Rl301
(fig. 1) for a multimeter indication of 0.000 V dc .003 V.
u. Press OUTPUT ON pushbutton off. Remove multimeter connections.
20. Low Edge Risetime
a. Connect OUTPUT to digitizing oscilloscope INPUT/TDR OUTPUT using X10
attenuator. Connect TRIGGER OUTPUT to digitizing oscilloscope TRIG.
b. Position controls as listed in (1) through (9) below:
(1) Press AMPLITUDE MODE AMPL MODE EDGE pushbutton.
(2) Press AMPLITUDE MODE EDGE POLARITY
pushbutton.
pushbutton to highlight 1 MHz.
(3) Press AMPLITUDE MODE FREQ
p
(4) Press AMPLITUDE MODE NUMBER OF DIV (MULTIPLIER)
ushbutton to display X 1 DIV.
(5) Press TRIGGER ON pushbutton on.
(6) Press TRIGGER NORM pushbutton on.
(7) Adjust UNITS/DIV dial to display 1 V/D.
(8) Press VARIABLE ON pushbutton off.
(9) Press OUTPUT ON pushbutton on.
c. Acquire signal. Set digitizing oscilloscope probe attenuation to 10 and set sweep
speed to 2 ns/D.
d. Perform risetime measurement technique using digitizing oscilloscope. Adjust
A7C1621 (fig. 1) until digitizing oscilloscope indicates a risetime less than 1.3 ns and
minimum aberrations (R).
e. Press OUTPUT ON pushbutton off and remove digitizing oscilloscope connections.
a. Connect TI output to oscilloscope Vertical 1 input.
b. Position controls as listed in (l) through (7) below:
(1) Press AMPLITUDE MODE AMPL MODE EDGE pushbutton.
pushbutton to highlight 1 kHz.
(2) Press AMPLITUDE MODE FREQ
p
(3) Press AMPLITUDE MODE NUMBER OF DIV (MULTIPLIER)
ushbutton to display X 8 DIV.
pushbutton.
(4) Press AMPLITUDE MODE EDGE POLARITY
(5) Press VARIABLE ON pushbutton off.