TB 9-6625-2346-35
(65) Adjust R195 (fig. 1) for 5 divisions of vertical deflection on TI (R).
(66) Connect oscilloscope calibrator CHAN 1 to TI CH 2 using a 5-80 pF
standardizer.
(67) Set oscilloscope calibrator for an EDGE mode output of 1 kHz and adjust for 5
divisions of vertical deflection on TI.
(68) Adjust 5-80 pF standardizer for optimum square wave.
(70) Set TI CH 2 VOLTS/DIV switch to .1.
(71) Replace 5-80 pF standardizer with 50Ω feedthrough termination.
(72) Set oscilloscope calibrator amplitude for 5 divisions of vertical deflection on TI.
(73) Adjust C62 (fig. 1) for best front corner.
(74) Replace 50Ω feedthrough termination with 5-80 pF standardizer and repeat (31)
above.
(75) Adjust C61 (fig. 1) for best flat top.
(76) Repeat (71) through (75) above until no further improvement is noted.
(77) Set TI CH 2 VOLTS/DIV switch to 1.
(78) Remove 5-80 pF standardizer and connect oscilloscope calibrator CHAN 1 to TI
CH 2, repeat (31) above.
(79) Adjust C55 (fig. 1) for best front corner.
(80) Connect oscilloscope calibrator CHAN 1 to TI CH 2 using 5-80 pF standardizer
and repeat (31) above.
(81) Adjust C54 (fig. 1) for best flat top.
(82) Repeat (78) through (81) above until no further improvement is noted.
(83) Position TI switches as listed in (a) through (c) below:
(a) VERTICAL MODE CH 1 BOTH CH 2 to CH 1.
(b) CH 1 and CH 2 VOLTS/DIV to 10 m.
(c) A AND B SEC/DIV to .05 s.
(84) Connect oscilloscope calibrator CHAN 1 to TI CH 1 using a 10X attenuator and
a 50Ω feedthrough termination.
(85) Set oscilloscope calibrator for an EDGE mode output of 1 MHz and adjust for 5
divisions of vertical deflection on TI.
(86) Adjust TI CH 1 ⇕POSITION control to position top of waveform to center
horizontal graticule line.
(88) Set TI CH 1 VOLTS/DIV switch to 2m.
(89) Set oscilloscope calibrator output for 5 divisions of vertical deflection on TI.
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