Furuno GP-3500 - Manual (Page 34)

2. PLOTTER AND PILOT DISPLAY DESCRIPTION
2-6
2.1.5 GPS status display
The GPS status display provides data about the GPS satellites and GEO
satellite (for WAAS).
30 40 50
21
07
06
11
03
05
12
08
SAT
No.
SNR
21
07
11
06
12
08
05
N
S
E W
20
20
W
28
30
01
123
30
01 : 00 : 15
APR 1 2003
GPS 2D
DOP
1. 2
ALT
12 m
FREQ
310.0 kHz
SS
75.0 dB
SN
22.0 dB
Time
Date
GPS fix status
DOP value
GPS antenna height
Appears when the
internal DGPS beacon
receiver is installed.
DGPS beacon frequency
Signal strength
03
28
01
WAAS satellite (GEO)
Receiving signal level
Bars show satellite
signal levels. Satellites
whose signal level
extends 40 are used
to fix position.
Estimated position of satellite in the sky.
Satellites used for fixing position are circled.
GPS status display
DOP value: DOP stands for Dilution of Precision and is an indication of the
quality of the satellite constellation. The smaller value means the
higher accuracy. (For your reference, the positioning accuracy is
approx. 10 m when the value is less than “4”.)
SS: SS (Signal Strength) displays a numeric representation of electrical field
strength of the received signal on the selected frequency. The higher the
number the stronger the received signal, and a figure above 60 is normal.
SN: SN (Signal-to-Noise) ratio displays the ratio between the desired signal
and unwanted noise on the selected frequency. The higher the SN ratio the
better the quality of the signal, and a figure above 21 is normal.