TB 9-6625-2294-35
d. When indications specified in paragraphs 7 through 13 are not within
tolerance,
perform Section IV, Menu Calibration Process. After adjustments are made, repeat
tolerance.
e. Unless otherwise specified, all controls and control settings refer to the TI.
Equipment Setup
HIGH VOLTAGE is used or exposed during the performance of
the 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. Connect TI to a 115 V ac source.
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.
b. Press POWER pushbutton to ON and allow at least 20 minutes for equipment
warm up.
NOTE
If TI CRT displays DIAGNOSTIC, PUSH A/B TRIG TO
EXIT at power on, one of the power-up tests has failed. If the
error message on the bottom line of the display is TEST 04
FAIL XX where XX is
01, 02, 10, or
11, stored calibration data
is in error. If this error message is displayed, then press A/B
TRIG pushbutton to exit
diagnostic mode and
perform Section
IV. If any other error message occurs, the failure is probably
not related to calibration. In this case, the instrument
should be repaired before attempting calibration.
c. Press corresponding pushbutton for indications as listed in (1) through (13) below:
(1) VERTICAL MODE CH 1 and CH 2 indicators on.
(2) VERTICAL MODE CH 3, and CH 4 indicators off.
(3) VERTICAL MODE ADD and INVERT indicators off.
(4) VERTICAL MODE CHOP/ALT to select ALT.
(5) CH 1 and CH 2 input coupling to select 1 MΩ AC.
(6) TRIGGER MODE to select AUTO LVL.