TB 9-6625-2233-24
(d)
1.
(e)
EXP.
(f)
6.
(g)
ENTER.
(h)
AMPLITUDE.
(i)
5.
(j)
ENTER.
(k)
FUNCTION
(square wave).
(2) Connect TI function outputs UNBALANCED to oscilloscope Channnel 1 input
using a 50 Ω feed through termination.
(3) Measure rise and falltime of displayed square wave using standard technique.
Rise and falltime will be <13 ns.
(4) Measure positive and negative transition aberrations of displayed square wave.
If peak-to-peak aberrations are not <5.4 %, perform b below.
(5) Remove cable from UNBALANCED and reconnect to SYNC OUT.
(6) Repeat technique of (3) above for SYNC OUT signal.
b. Adjustments
(1) Set POWER switch to OFF.
(2) Remove top cover.
NOTE
Keep top cover and shield in place during this procedure except
when necessary to make an internal adjustment.
(3) Set POWER switch to ON.
(4) Press and hold (down) A2SW1 (fig. 2) and then press CALIBRATE pushbutton.
(5) Observe display indication of WVTK SN X, XXX, XXX or WVTK SN 0.
(6) Press CURSOR pushbutton and allow enough time for calibrating mode to complete.
(7) Observe display indication of ARMY SN X, XXX or ARMY SN 0.
(8) Repeat (6) above observing display indication of PEAKING C22.
(9) Connect UNBALANCED output to oscilloscope Channel 1 input, using a 50 Ω
feedthrough termination.
(10) Adjust A3C22 (fig. 3) for a peak-to-peak aberration of less than 5.4% displayed
on oscilloscope (R).
(11) Press CALIBRATE pushbutton and verify display indicates CALIBRATION OFF.
(12) Disconnect equipment setup and reinstall top cover.
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