TB 9-6625-2295-24
d. When indications specified in paragraphs 7 through 13 are not within tolerance,
perform Section IV, Menu Calibration Process. After adjustments are made, repeat
paragraphs 7 through 13. Do not perform Section IV if all other parameters are
within tolerance.
e. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
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. 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.
NOTE
If instrument is subjected to greater than 85 percent relative
humidity, bandwidth is reduced by 50 MHz.
After the
instrument is subjected to greater than 85 percent relative
humidity, it requires more than 50 hours of operation at less
than 60 percent relative humidity before full bandwidth is
restored.
b. Press POWER pushbutton to ON and allow at least 20 minutes for equipment to
warm-up.
NOTE
If TI displays DIAGNSTIC, PUSH A/B TRIG TO EXIT at
power on, one of the power-up tests has failed. If error
message on bottom line of 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, 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 pushbuttons for indications as listed in (1) through (9) below: