Final Procedure - TB-9-5985-314-350015

TB 9-5985-314-35

10. Final Procedure

a. Deenergize and disconnect all equipment.

b. Annotate and affix DA label/form in accordance with TB 750-25.

CALIBRATION PROCESS FOR VSWR BRIDGES

11. Preliminary Instructions

a. The instructions outlined in paragraphs 11 and 12 are preparatory to the calibration

process. Personnel should become familiar with the entire bulletin before beginning

b. Items of equipment used in this procedure are referenced within the text by common

name as listed in table 1.

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.

12. Equipment Setup

a. Use Appendix B to determine TI parameters for directivity.

NOTE

Clean all connectors with alcohol before proceeding with b

below.

b. Connect equipment as shown in figure 1 and allow 1 hour for equipment warm-up.

NOTE

Do not connect TI into equipment setup at this time.

c. Determine and record a minimum of 10 evenly spaced test frequencies over the TI

entire frequency range.

13. Directivity

a. Performance Check

(1) Adjust signal generator No. 1 controls to test frequency recorded in 12 c above

and adjust RF OUTPUT controls for +6 dBm. Connect N-short to TI DEVICE UNDER TEST

port.