TB 9-4931-504-50
PRELIMINARY OPERATIONS
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by
common name and item identification number as listed in tables 2 and 3. For the
identification of equipment referenced by item numbers prefixed with A, see table 2, and
for prefix B, see table 3.
WARNING
HIGH VOLTAGE is used during the performance of this
calibration. DEATH ON CONTACT may result if personnel
fail to observe safety precautions.
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
7. Equipment Setup
compartments, using two extenders (B6).
b. Position controls as listed in (1) through (8) below:
(1) CH1, INT CH1, REP pushbuttons pressed and all others released.
(2) DC OFFSET controls midrange.
(3) SCAN control fully cw (clockwise).
(4) TRIGGERING HOLDOFF control (center knob) fully ccw (counterclockwise).
(5) DELAYING SWEEP (dark gray) and DELAYED SWEEP SEC/DIV (light gray)
switches to 5 s, and DELAYED SWP VAR control fully ccw.
(6) DELAY ZERO (1st dot) and DELAY TIME MULT (2nd dot) controls ccw.
(7) CH1 and CH2 VOLTS/DIV switches to .2V.
(8) Both VOLTS/DIV CAL (red) controls fully ccw (to detent).
c. Energize and allow 30 minutes for warmup.
SECTION IV
5
