TB 9-6625-2204-24
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 in tables 2 and 3.
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 TM 11-6625-842-15 for this TI.
d. Unless otherwise specified, all controls 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
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Mechanically zero TI panel meters if required.
b. Set 6 AMP POWER circuit breaker to OFF and connect TI to 115 V ac, 400 Hz,
using cable W3 (P/0 TI).
d. Using multimeter, measure resistance value of ac load (fig. 1 A. AC LOAD). If
resistance value exceeds 117.8 , add 4700 , resistor as shown in figure 1 A. AC LOAD.
e. Repeat d above for dc load (fig. 1 B. DC LOAD). If resistance value exceeds 4.1 ,
add 160 resistor as shown in figure 1 B. DC LOAD. If dc load is less than 3.9 , add 0.1
r
esistor as shown in figure 1 B. DC LOAD.
2), using appropriate lead. Connect other end of ac load to TRANSPONDER J2 pins C14
and C13 (fig. 2), using appropriate leads.