Mid and High Edge Offset

TB 9-6625-2274-50

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.

21. Mid and High Edge Offset

a. Connect TI output to oscilloscope CH1.

b. Position controls as listed in (l) through (7) below:

(1) Press AMPLITUDE MODE AMPL MODE EDGE pushbutton.

(2) Press AMPLITUDE MODE FREQ

pushbutton to highlight 1 kHz.

(3) Press AMPLITUDE MODE NUMBER OF DIV (MULTIPLIER)

pushbutton to display X 8 DIV.

pushbutton.

(4) Press AMPLITUDE MODE EDGE POLARITY

(5) Press VARIABLE ON pushbutton off.

(6) Adjust UNITS/DIV dial to display 2 V/D.

(7) Press OUTPUT ON pushbutton on.

c. Acquire signal and set oscilloscope amplitude to 2 V/D. Adjust oscilloscope variable

control for exactly 6 vertical divisions of trace separation.

d. Position controls as listed in (1) through (6) below:

(1) Press AMPLITUDE MODE AMPL MODE VOLT pushbutton.

(2) Press AMPLITUDE MODE NUMBER OF DIV (MULTIPLIER)

pushbutton to display X 8 DIV.

(3) Press AMPLITUDE MODE FREQ

to highlight 1 kHz.

(4) Press VARIABLE ON pushbutton on.

(5) Adjust UNITS/DIV dial to display 2 V/D.

(6) Press OUTPUT ON pushbutton on.

e. Adjust TI VAR dial until oscilloscope indicates exactly 6 divisions of trace

separation. Do not change once set.

f. Adjust UNITS/DlV dial to display .2V/D and press AMPLITUDE MODE

NUMBER OF DIV (MULTIPLIER)

pushbutton to display X 6 DIV.

g. Set oscilloscope amplitude to 200 mV/D and adjust variable control until display

indicates exactly 5 vertical divisions of trace separation.

h. Position controls as listed in (1) through (4) below:

(1) Press AMPLITUDE MODE AMPL MODE EDGE pushbutton.

(2) Press AMPLITUDE MODE NUMBER OF DIV (MULTIPLIER)

pushbutton to display X 6 DIV.

(3) Adjust UNITS/DIV dial to display .2 V/D.