TB 9-4931-523-35
NOTE
Use adapters as needed.
(6) Establish a reference on receiver system at 1 GHz.
(7) Set TI for 0 dB or minimum attenuation and insert TI between POINTS A and B
NOTE
Ensure receiver system is in measurement mode.
(8) Measure and record receiver system indication as insertion loss. This value will
be within the tolerance listed in appendix A.
(9) Establish a new reference on receiver system.
(10) Increase TI attenuation setting in one-step increments (or one cardinal point as
desired).
(11) Measure and record attenuation change. Measured attenuation will be within
range and accuracies specified in appendix A for TI being calibrated.
(12) Repeat (10) and (11) above for each setting on TI dial or other desired settings.
(13) Disconnect TI from equipment setup and repeat (1) through (12) above for
remaining frequencies recorded in 7a above.
b. Adjustments. No adjustments can be made; however, a correction chart may be
prepared listing actual receiver system indications at frequencies of interest.
14. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
