TB 9-6625-1967-35
(4) Set pulse generator for 50 s duration, -3.5 V output with +2.0 V offset, and
external trigger.
(5) Pull POWER switch to on.
(6) Position controls as listed in (a) through (c) below:
(a) mρ/DIV switch to 200.
(b) Multiplier switch to X1.
(c) CABLE DIELECTRIC (all pushbuttons to out positions).
NOTE
In (9) below, do not exceed 0.85 V to CABLE input with
oscilloscope calibrator.
(7) Connect oscilloscope calibrator source/measure channel 1 output to CABLE
input, using cable and X10 attenuator.
(8) Connect oscilloscope calibrator source/measure ext trig channel 5 to pulse
(9) Set oscilloscope calibrator mode to MARKER, SHAPE to spike, TRIG to 1, 0.2 S
markers. Set oscilloscope calibrator output for 1.5 divisions vertical display on TI.
(10) Align first time-mark behind first vertical graticule line on crt using
DISTANCE control. If the 11th time-mark does not align within 0.2 minor divisions to the
left of the 11th graticule line, perform b below.
(11) Push POWER switch to off and replace U1575 (fig. 7). Pull POWER switch to
on.
b. Adjustments.
Adjust R1435 FT/DIV
(fig. 7) to align
alternate markers behind each
vertical graticule line using DISTANCE control to keep first time-mark behind first
vertical graticule line (R).
a. Performance Check
(1) Position controls as listed in (a) through (d) below:
(a) mρ/DIV switch to 500.
(b) FEET/DIV switch to 1.
(c) CABLE DIELECTRIC SOLID POLY pushbutton in.
(d) Multiplier switch to X.1.
(2) Align incident pulse of crt display to graticule reference line (2d graticule), using
ZERO REF control.