TB 9-6625-2072-24
g. Position TI controls as listed in (1) through (10) below:
(1) MAIN and DELAYED VERNIER controls fully cw (CAL).
(2) DELAYED INT/AUTO/EXT/EXT + 10 switch to INT.
10/EXT/INT LINE switch to INT.
(3) MAIN EXT
(4) MAIN and DELAYED ACS/ACF/AC/DC switches to AC.
(5) TIME/DIV sweep display switch to MAIN.
(6) MAIN TIME/DIV switch to 0.1 s.
(7) SWEEP MODE switch to AUTO.
(8) DELAYED TIME-DIV switch to OFF.
(9) MAIN and DELAYED SLOPE switches to +.
(10) DELAY (DIV) control to 1.00.
21. Sweep Time
a. Performance Check
(1) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to vertical
amplifier A INPUT, using 50 feedthrough termination.
(2) Set oscilloscope calibrator for a 0.1 s MARKER output.
(3) Adjust vertical amplifier VOLTS/DIV controls for approximately 3 divisions of
vertical deflection on oscilloscope.
(4) Adjust MAIN TRIGGER LEVEL control for stable display.
(5) Adjust oscilloscope HORIZONTAL POSITION control to align second marker
with second vertical graticule line. Rotate knob located below EDIT FIELD button on
oscilloscope calibrator to align 10th marker with 10th vertical graticule line. If oscilloscope
calibrator err readout is not within 3 percent, perform b (1) below.
(6) Repeat technique of (2) through (5) above for MAIN TIME/DIV switch settings
vertical graticule lines within 3 percent indication on oscilloscope calibrator err readout,
perform corresponding adjustments listed in table 7.
(7) Set MAIN MIXED DELAYED switch to DELAYED.
(8) Set DELAYED TIME/DIV switch to .1 SEC and MAIN TIME/DIV switch to
.2 SEC.
(9) Repeat technique of (2) through (6) above for DELAYED TIME/DIV switch. If
calibrator err readout, perform b (2) below.