Specifications

TM 11-5820-670-30

2-37. HOMING ADJUSTMENT.

(CONT)

EL1AT249

Adjust vertical needle adjust potentiometer R4805, located on homer-detector amplifier

assembly for a center-scale indication on homing indicator.

Vary signal generator output from minimum signal to 10 microvolt. Flags on homing indicator

should disappear when signal generator output is 1.2 microvolt or less; vertical needle

should stay centered ( ± 1/8 inch).

Set signal generator output to 35 microvolt and adjust horizontal needle potentiometer R4830,

located on homer-detector amplifier assembly, so homing indicator horizontal needle is

1/8 inch below center of indicator.

Adjust signal generator output for 10 microvolt. Set test set LEFT HOMER ATTEN to 3 db, and

adjust center course sensitivity potentiometer R4826 so homing indicator vertical needle

deflects right of center one-half of full scale.

Set RIGHT HOMER ATTEN to 3 db and LEFT HOMER ATTEN to 0 db. Repeat step 7 and ensure

homing indicator vertical needle deflects left of center one-half of full scale.

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