TB 9-5985-314-24
NOTE
When determining directivity, in- or out-of-tolerance condition,
all of the below must be considered:
1. Termination mismatch errors can cause
measured
directivity to appear slightly lower than normal.
2. A 10 percent variation in directivity is acceptable for most
directional couplers used in direct support of field activities in
the U. S. Army.
3. A directional coupler may be out of tolerance at a specific
frequency and still be useable over the rest of its range.
2. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
E-5/(E-6 Blank)