TB 9-6625-2024-35
e. Energize equipment and allow at least 15 minutes for warm-up.
21. Sweep Length, Magnifier Gain, and Timing
a. Performance Check
(1) Set vertical amplifier VOLTS/DIV switch to .5 V.
(2) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to vertical
amplifier input.
(3) Set oscilloscope calibrator MARKER output for 1 ms. If display on
oscilloscope does not indicate 1 marker per division and a trace length of at least 10.4
divisions, perform b(1) and (2) below.
(4) Pull out DLY TIME switch to .2 ms and PUSH FOR DLY'D. If delayed
sweep length is not at least 10.4 divisions, perform b(3) below.
(5) Set DLY TIME switch to 1 ms and PUSH FOR DYL'D.
(6) Press and release MAG pushbutton to X10 (OUT) position.
(7) Set oscilloscope calibrator MARKER output for .1 ms.
NOTE
Tolerances in parenthesis are for TD1159/U and 7B53A and
7B53AN OPT 5 and OPT 11S.
(8) Adjust POSITION control to align second marker on second vertical graticule
line. Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton to
readout does not indicate within 5% (2.5%), rotate oscilloscope calibrator knob located
below EDIT FIELD pushbutton for indication of 0.0% on err display and perform b(4)
below.
(9) Press MAG pushbutton to X1 (IN) position and set TIME/DIV OR DLY
TIME switches to .1 s.
(10) Set oscilloscope calibrator MARKER output for .1 s.
(11) Adjust POSITION control to align second time marker on second vertical
graticule line. Rotate oscilloscope calibrator knob located below EDIT FIELD
err display readout does not indicate within 3% (3%), rotate oscilloscope calibrator
knob located below EDIT FIELD pushbutton for indication of 0.0% on err display and
perform b(5) below.
(12) Set TIME/DIV switch to .2 s and DLY TIME switch to .1 s (PUSH FOR
DYL'D).
(13) Adjust POSITION control to align second marker on second vertical graticule
line. Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton to
readout does not indicate within 3% (4%), rotate oscilloscope calibrator knob located
