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|  TM 11-5826-257-24
marker lamp on the AN/ARM-92B lights. The
(3) Set the AN/URM-127 frequency control to
130 (1300 Hz).
blue and white lamps must not light.
(4) Adjust the AN/USM-44 ATTEN. dial until
(6) Set the AN/URM-127 FREQ. RANGE
MULTIPLIER to X100.
amber lamp (middle) on AN/ARM92B glows
dimly.
(7) Adjust the AN/URM-127 frequency con-
(5) Check to see that the rf output level on
trol to 30 (3000 Hz).
the AN/USM-44 ATTEN. dial is 1000 microvolts.
(8) Check to see that the white AIRWAY
(6) Set the AN/ARM-92B SENS switch to LO.
marker lamp on the AN/ARM-92B lights. The
blue and amber lamps must not light.
(7) Adjust the AN/USM-44 ATTEN. dial until
f. Threshold Sensitivity Test.
amber lamp on AN/ARM-92B lights.
(8) Check to see that the rf output level on
(1) Set the AN/ARM-92B SENS switch to HI.
the AN/USM-44 ATTEN. dial is between 1.0 and
(2) Set the AN/URM-127 FREQ. RANGE
3.0 millivolts.
MULTIPLIER to X10.
4-9
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