TB 9-6625-1339-24
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
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 as listed in table 2
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.
d. Unless otherwise specified, all control and control settings refer to the TI.
7. 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
OUPUT(S) to minimum after each step within the performance
check where applicable.
a. Connect shorting bar to TI input binding posts.
b. If TI meter does not indicate a null, adjust to null, using adjustment screw located
below meter face.
c. Remove shorting bar from input binding post.
8. Resistance Check
a. Performance Check
(1) Connect appropriate leads to TI and short end of leads.
(2) Depress and hold TI KEY.
(3) Adjust TI OHMS digital dial for a null on TI meter; release KEY.
(4) Record TI OHMS digital dial indication.
(5) Connect resistance standard to TI binding posts, using appropriate leads.
.
(6) Adjust resistance standard to 1.0
(7) Connect multimeter across resistance standard.
(8) Depress and hold TI KEY and adjust OHMS digital dial until TI meter indicates
a null. Multimeter will indicate less than 5 mV dc. Release KEY.