TB 43-0123
DT-173/AJN
EIC: NIA
(Illustration Not Available)
DT-173/AJN Magnetic Azimuth Detector
1. Brief Description: The DT-173/AJN Magnetic
2. Applicable Tools and Test Equipment:
Azimuth Detector is the direction-sensing element of
See Appendix B for nomenclature, NSN, etc.
attitude Heading Reference Set AN/ASN-76 or
Type No
AVUM
AVIM
Inertial Nav Set ANIASN-86. Its sensing element is
AN/ASM-339
pendulously mounted so that it average position is in
X
the horizontal component of the earth's magnetic
TK-101/G
X
field and is normally maintained regardless of the
turbulence of the air or the attitude of the aircraft. It
NOTE
detects the direction of the lines of force in this
horizontal magnetic component and transmits this
The DT-376/ASN can be substituted
information electrically to the Magnetic Compass
for the DT-309/AJN when a special
System. The information is used to process and
adapter cable is utilized.
position the gyro to provide long-period stabilization
for the system. Any signals produced during short-
3. Applicable Publications:
period swinging of the Magnetic Azimuth Detector
TM 11-6605-253-25
sensing element into the earth's vertical magnetic
component are effectively integrated by the gyro
because of its slow reaction to slaving signals.
Power input requirement is 23.5 volts AC, 400 Hz,
single phase Major components of this set are as
follows:
CN-1072/AJN ...... Detector Magnetic Compensator
DT-309/AJN......... Azimuth Detector
II-B-40
