TM 5-6675-318-14
Table 4-21. CODE DESCRIPTIONS - Cont
0 -
C -
D -
E -
I -
R -
S -
U -
X -
Y -
No 2D fix could be computed.
Less than eight doppler counts used in 2D computations.
More than 20 nm (37.04 km) between 2D position and dead reckoned position.
Maximum elevation angle of satellite not between 10 and 70 degrees.
More than six iterations occurred in 2D computations.
Only one of two satellite receiver channels was used to calculate 2D
position due to insufficient data on other channel.
S t a n d a r d d e v i a t i o n o f r e s i d u a l s w a s t o o l a r g e , i n d i c a t i n g t h a t s a t e l l i te
data was in error (see code 91).
Data from satellite was asymmetrical about point of closest approach.
Last satellite pass data was taken from a satellite that indicated within
its message that is should not be used for precise applications (i.e.,
n e g a t i v e s a t e l l i t e n u m b e r ).
Satellite pass data was taken from a satellite that was deleted by user.
Press the enter (E) key to display the 3D position. Refer to code 63 for a
description of the 3D position display. The 3D position displays can be sequenced
by continuing to press the enter (E) key or by entering code 63.
3D Position Display
Code 54, Display 400 Tune and Signal Levels
Enter code 54 to display the frequency of the 400 MHz channel receiver oscillator
a n d t h e s i g n a l - t o - n o i s e r a t i o . T h e u n i t s o f f r e q u e n c y a r e k i l o h e r t z . T h e d i s p l a y ed
range for the 400 channel is 23 to 42 kilohertz. A signal-to-noise ratio of 0
indicates no signal and 100 indicates a perfect signal.
4-141
