MM0474
Figure 9. Calibration factor - equipment setup
(12.4 to 40 GHz transfer level).
(16) Repeat steps (1) through (14) above for a frequency near center and
one at the upper end of the TI response range.
(17) The value recorded in (14) above will correspond to the calibration
factor stamped on the factor chart of the TI within 5 percent.
8.
REFERENCE CALIBRATION TECHNIQUE
a. This procedure deals with the reference technique in calibrating
mounts. The technique we will describe is the preferred method. Once again
the signal source is from the AN/USM 234 Test Set covered in ORD Subcourse 471.
b. Calibration Factor, 10 MHz to 18 GHz.
(1) Connect the equipment as shown in Figure 10, connection A, for the
applicable frequency of the TI.
(2) Set the power meter (A5) and power bridges (A4) mount resistances to
agree with the thermistor mount being calibrated.
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