TB 9-5210-219-40
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. 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
a. Allow TI and test equipment 8 hours to stabilize at ambient temperature.
b. Inspect TI bottom reference surface for defects and cleanliness. Repair and clean as
necessary.
c. Use precision level to level surface plate within 30 arc-sec along length and width of
surface plate.
8. Angle Indication
a. Performance Check
NOTE
There are two methods to perform TI calibration.
The
(1) Setup equipment on surface plate as shown in figure 1.
Figure 1. Angle indication 0 degrees.
