TB 11-6625-821-35
Figure 5. Direction Finder Set Test Set AN/ARM-93, parts location.
(2) Frequency Adjustment.
(a) Set D.C. POWER switch on the unit under test to OFF.
(b) Remove the screws holding the plate on Static Power Inverter CV-
2128/ARN-83. Remove the plate.
(c) Loosen the screws holding Static Power Inverter CV-2128/ARN-83 to the
unit under test and remove it.
(d) Connect Static Power Inverter CV-2128/ARN-83 to J6 (INVERTER
connector) of the unit under test with Special Purpose Electrical Cable Assembly CX-
11571/ARM-93 (cable W4), which is supplied with the unit under test.
(e) Connect the equipment as shown in figure 6.
(f) Set D.C. POWER switch on the unit under test to ON.
(g) Adjust potentiometer R1 (see fig 7 for location) in Static Power Inverter CV-
2128/ARN-83 until frequency meter indicates 400 cps. (R)
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