TB 9-6625-2327-24
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. 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. Remove TI from protective cover only as necessary to make adjustments. Replace
cover after completing the adjustments.
b. Connect TI to 115 V ac power source.
c. Press power switch Φ to on and allow at least 1 hour for TI to warm-up and stabilize.
d. Press the Utility and Test/Cal keys.
NOTE
The factory default secure code is AT33250A. If the secure
code has been changed and is now unknown, the
manufacturer's manual, section 4, describes how to unsecure
the instrument without a security code.
e. Enter the security code using the knob to change the displayed character, and arrow
keys to move to the next character.
f. Press Done key.
8. Frequency Accuracy
a. Performance Check
(1) Connect TI Output to frequency counter channel A input. Set frequency counter
for a 50Ω, on channel A.
(2) Press TI keys as listed in (a) through (d) below.
(a) Sine.
(b) Ampl, 1, and Vp-p.
(c) Freq, 10, MHz.
(d) Output to on.
(3) Set TI for frequency listed in table 3
(4) Set frequency counter to measure frequency on channel A.