TB 9-6625-967-35
(c) CH1 and CH2 VARIABLE VOLTS/DIV controls to CALIB.
(d) CH1 and CH2 AC-DC-GND switches to GND.
(e) MODE switch to ALTER.
(f) INV. (CH1) NORM switch to NORM.
(g) TRIGGER CH1 ONLY PULL switch depressed.
(2) Place CRT CATHODE SELECTOR switch to UP position (rear panel of
oscilloscope (A5)).
(3) Adjust time base plug-in (A8) controls for 1 millisecond/division and
TRIGGERING controls for a free-running display on oscilloscope crt.
(4) Adjust TI POSITION controls for oscilloscope crt display with traces aligned
with horizontal lines.
plate pin (blue wire) and ground, using lead (B8). Record multimeter indication.
pin (brown wire) and ground. Record multimeter indication. If average of multimeter
indications recorded in (5) above and this step is not 180 volts dc, perform b below.
b. Adjustments. Adjust OUTPUT DC LEVEL
R328 (fig. 1) for an
average multimeter
voltage indication of 180 volts dc.
16. CH1 Dc Trigger Level
a. Performance Check
(1) Set TI MODE switch to CH1 and TRIGGER CH1 ONLY PULL switch pulled
out.
(2) Connect multimeter (A4) between R389 (fig. 1) and ground, using cable (B5). If
multimeter does not indicate 0 volt, perform b below.
b. Adjustments. Adjust TI CHAN 1 TRIG DC LEVEL
R171 (fig. 1) until
multimeter
indicates zero voltage.
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