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GPS
Product series
Speed
Units
Checksum
<CR> <LF>
(1). SiRF Technology Inc. does not support magnetic declination. All "course over ground" data are geodetic WGS84 directions.
4.1.7 MSK Receiver Signal (MSS)
Table 4-11 contains the values for the following example:
$GPMSS,55,27,318.0,100,*66
Table 4-11 MSS Data Format
Name
Message ID
Signal Strength
Signal-to-Noise
Ratio
Beacon Frequency
Beacon Bit Rate
Checksum
<CR> <LF>
Note – The MSS NMEA message can only be polled or scheduled using the MSK NMEA input
message.
4.1.8 ZDA—SiRF Timing Message
Outputs the time associated with the current 1 PPS pulse. Each message will be output
within a few hundred ms after the 1 PPS pulse is output and will tell the time of the pulse that just
occurred.
Table 4-12 contains the values for the following example:
$GPZDA,181813,14,10,2003,00,00*4F
Table 4-12 ZDA Data Format
Name
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:info@holux.com.tw Website:www.holux.com.tw
0.2
km/hr
K
*6E
Example
Units
$GPMSS
MSS
55
dB
27
dB
318.0
kHz
100
66
Example
Units
With HOLUX, You never lose the way!
Measured horizontal speed
Kilometers per hour
End of message termination
Description
protocol header
dB SS of tracked frequency
SNR of tracked frequency
Currently tracked frequency
100 bits per second
End of message termination
Description
12
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