SAR-DF 517
DV 77513.03 Issue 4 09/2006
Page 3-5
Fig. 3-5 Display page 2 (ex/- 45° Bearing Display)
Fig. 3-6 Display page 3 (Bearing Display as Text)
1
>
Bearing value
<, by the means of a sophisticated averaging procedure a steady display is
accomplished, either as graphic display (depending on page) or as text in the
range of 0°…359°. (0° corresponds to bearing direct ahead).
2
>
Spread
<, maximum deviation of unaveraged bearing values as indicator of bearing quality. The
wider the range, the worse is the received signal. The excellent averaging procedure effects good
bearing results even with a spread of 45°.
3
>
Receiving level
< (field strength) of the signal in the range of 0% to 100%. Even without a
received signal a certain noise level may be displayed..
4 >
Squelch level
< -marker (free adjustable>
Squelch level
< -marker (free adjustable for each
frequency). A usable bearing and Cospas/Sarsat analysis can only be achieved, if the squelch
level is above the noise level (without received signal). If the bearing antenna is situated near
strongly disturbing electronic devices, the squelch level has to be raised, thus making the direction
finder less sensitive.