TB 9-6625-2293-24
b. When performing paragraphs 19 through 22 touch only specific control or controls
called out in the procedure. Movement of any other control may cause erroneous
calibration results.
c. Within the automatic calibration procedure, the calibration constants for timing,
vertical gain, and trigger level are generated by the system microprocessor and stored in
nonvolatile memory. The adjustments in CAL 01, 02, 03 should be done in numerical
sequence.
d. When performing automatic CAL steps, initial setting of front-panel controls is not
required.
16. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Press TI POWER pushbutton to OFF and disconnect TI from the 115 V ac source.
Remove protective cover and move CAL/NO CAL jumper (P501) on A5 control board (right
side of TI) to CAL position.
b. Connect TI to a 115 V ac source and press POWER pushbutton to ON and allow at
least 20 minutes for equipment warm-up.
NOTE
When POWER pushbutton is pressed to ON, TI automatically
performs a self-test sequence. Upon successful completion of
self-test, TI will be in normal operating mode.
NOTE
Throughout this procedure, readout and control messages are
displayed along the top and bottom of display (crt).
c. Adjust corresponding controls for indications as listed in (1) through (8) below:
(1) VERTICAL MODE CH 1, CH 2, CH 3, and CH 4 on.
(2) CH 3 and CH 4 VOLTS/DIV for .1 V.
(3) VERTICAL MODE ADD, INVERT, and 20 MHz BW LIMIT off.
(4) VERTICAL MODE CHOP/ALT to ALT.
(5) VERTICAL MODE CH 3 and CH 4 off.
(6) TRIGGER SLOPE to + (plus).
(7) TRACK/INDEP to INDEP.
(8) Δt and ΔV to off (no cursors on display).
