TB 9-6625-2102-24
13. Main Generator Transition Time
a. Performance Check
(1) Connect TI FUNCTION OUT (50 :) to oscilloscope Vertical 1 input.
(2) Initiate oscilloscope Vertical 1 with 50 : input and set to measure risetime
and falltime.
(3) Position controls as listed in (a) through (c) below:
(a) FREQ/MULT (Hz) switch to 1M and VERNIER control fully cw to CAL.
(b) Frequency dial to 1.0.
(c) AMPLITUDE control for 6 divisions which is approximately 6 V on
oscilloscope display.
(4) Using oscilloscope measurement techniques, verify that the risetime is less than
the limit specified in table 14.
Table 14. Risetime
Oscilloscope indications
(<nS)
25
(5) Using oscilloscope measurement techniques, verify that the falltime is less than
the limit specified in table 15.
Table 15. Falltime
Oscilloscope indications
(<nS)
25
(6) Disconnect equipment.
b. Adjustments. No further adjustments can be made.
14. Main Generator Distortion
a. Performance Check
(1) Connect TI FUNCTION OUT (50 :) to audio analyzer INPUT HIGH
using 50 : feedthrough termination.
(2) Initiate audio analyzer and set to measure level.
(3) Position controls as listed in (a) through (d) below:
FREQ/MULT(Hz) switch to 1K and VERNIER control fully cw to CAL.
(a)
Frequency dial to 1.0.
(b)
Main generator FUNCTION switch to
(c)
.
AMPLITUDE control for 5 V on audio analyzer.
(d)
(4) Set audio analyzer to measure distortion at 1 kHz. If audio analyzer does not
indicate within limit shown in table 16, perform b below.