TB 9-6625-2011-24
(4) Disconnect oscilloscope from OUTPUT (+) and connect to OUTPUT (-).
(5) Repeat (2) and (3) above. If preshoot, overshoot, and ringing are not less than 5
percent of pulse amplitude, perform b (2) below.
b. Adjustments
(1) Adjust A6C25 and A6R25 (fig. 1) until preshoot, overshoot, and ringing is less
than 5 percent of pulse amplitude (R).
(2) Adjust A6C65 and A6R65 (fig. 1) until preshoot, overshoot, and ringing is less
than 5 percent of pulse amplitude (R).
a. Performance Check
(1) Adjust PULSE PERIOD VERNIER control for a display of one complete pulse
(2) Set PULSE DOUBLE/NORM switch to DOUBLE.
(3) Adjust PULSE DELAY VERNIER control to produce two pulses spaced at least
20 ns between leading edges. If width of each pulse is not the same, perform b below.
b. Adjustments. Adjust A5R188 (fig. 1) until width of first pulse is same as second
pulse (R).
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check
(1) Connect multimeter between +17 V TP (fig. 1) and ground. If multimeter does
not indicate between 16.9 and 17.1 V dc, perform b (1) below.
(2) Connect multimeter between -17 TP (fig. 1) and ground. If multimeter does not
indicate between -16.9 and -17.1 V dc, perform b (2) below.
b. Adjustments
(1) Adjust A6R102 (fig. 1) for a 17.00 V dc indication on multimeter (R).
(2) Adjust A6R106 (fig. 1) for a -17.00 V dc indication on multimeter (R).
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.