Power Supply

TB 9-4931-495-24

17. Power Supply

a. Performance Check

NOTE

Do not perform power supply check if all other parameters are

within tolerance.

(1) Connect multimeter between A4+20 and A4 GND (fig. 2 or 3). If multimeter

does not indicate between 19.994 and 20.006 V dc, perform b (2) below.

(2) Move positive lead to A4+5 (fig. 2 or 3). If multimeter does not indicate between

4.995 and 5.005 V dc, perform b (2) below.

(3) Move positive lead to A5-40 and negative lead to A5 GND (fig. 2 or 3).

multimeter does not indicate between -39.98 and -40.02 V dc, perform b (3) below.

(4) Move positive lead to A5-10 (fig. 2 or 3).

If multimeter does not indicate

between -9.996 and -10.004 V dc, perform b (4) below.

b. Adjustments

(1) Adjust ADJ+20 A4R5 (fig. 1) (A4R21 fig. 2) for 20.000 V dc on multimeter (R).

(2) Adjust ADJ+5 A4R32 (fig. 1) (A4R15, fig. 2) for 5.000 V dc on multimeter (R).

(3) Adjust ADJ-40 A5R9 (fig. 1) (A5R18 fig. 2) for -40-000 V dc on multimeter (R).

(4) Adjust ADJ-10 A5R12 (fig. 1) (A5R4, fig. 2) for -10.000 V dc on multimeter (R).

18. Final Procedure

a. Deenergize and disconnect all equipment.

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

SECTION V

CALIBRATION PROCESS FOR RF PLUG-IN MODELS 86222A AND 86290A

19. Power Output (Model 86222A)

a. Performance Check

(1) Connect power meter to RF OUTPUT, using attenuator (fixed).

(2) Position controls as listed in (a) through (l) below:

(a) START MARKER pointer to 10 MHz.

(b) TOP MARKER pointer to 2.4 GHz.

(d) MODE switch to AUTO.

(e) TIME-SECONDS switch to 0.1-0.01.