Chapter 5 - Understanding Position Coordinates
961/962 Operations and Reference Manual, Rev. A
Page 5-5
There are three bar graphs that display:
• SNR
• SIGNAL
• NOISE
SNR
is a good measure of overall signal quality, and should be
as high as possible. Values of 15 and higher are preferable;
anything below 10 could indicate poor reception.
SIGNAL
is the actual strength of the received signal, and
should be as high as possible. Signal strength varies with the
distance from the differential transmitter.
NOISE
is the level of static caused by lightning and other
atmospheric effects, and should be low for best results. The
range of noise-level meanings are outlined in “Table 2:
Noise-level meanings” below.
For information on optimizing these numbers, see the
Northstar 961/962 GPS Chart Navigator Installation Manual
.
Table 2: Noise-level meanings
Noise-level value
Meaning
200 and less
excellent
1,000–3,000
typical at night
5,000–10,000
thunderstorm
Summary of Contents for 961
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Page 8: ...Page x 961 962 Operations and Reference Manual Rev A ...
Page 14: ...Page xvi 961 962 Operations and Reference Manual Rev A ...
Page 92: ...Chapter 3 Using the Controls Page 3 34 961 962 Operations and Reference Manual Rev A ...
Page 160: ...Chapter 6 Creating Waypoints Page 6 18 961 962 Operations and Reference Manual Rev A ...
Page 176: ...Chapter 7 Creating Avoidance Points Page 7 16 961 962 Operations and Reference Manual Rev A ...
Page 202: ...Chapter 8 Creating Routes Page 8 26 961 962 Operations and Reference Manual Rev A ...
Page 380: ...Glossary Page G 8 961 962 Operations and Reference Manual Rev A ...