Casio IT-800 Series Software Manual page 139

GSV Sentences
This outputs data on GPS Satellites in View.
GSV sentences show current data on the satellites from which a signal can be received. A single
sentence contains data up to four satellites. Data on the fifth and subsequent satellites is output in
multiple lines. In the example below, data is provided on eight satellites in two sentences.
Example of output:
$GPGSV,2,1,08,13,22,148,16,17,78,326,33,28,31,209,29,04,39,289,46*73
$GPGSV,2,2,08,11,26,083,21,20,51,047,,02,06,274,40,23,34,111,32*7F
The first sentence contains the following information.
Table 2.105
Item
$GPGSV
2 Total message count
1 Message no.
08, No. of satellites from which signal can be transmitted
13 Satellite no.
22 Elevation (degrees)
148 Direction (degrees)
16 Indicates the signal-to-noise ratio (SNR; dB) when receiving a signal.
The higher the ratio, the better the signal.
Items 5 to 8 repeated 0 to 3 times
*73 Checksum
Note:
"Yes" indicates the presence of the valid output.
"No" indicates the absence of the valid output.
Description
139
Validity
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes