RXM-GPS-SR-B Linx Technologies Inc, RXM-GPS-SR-B Datasheet - Page 9

• Manufacturer Part Number: RXM-GPS-SR-B
• Description: GPS MODULE SMD SIRF W/ANT
• Manufacturer: Linx Technologies Inc
• Series: SRr
• Type: GPS Receiver Moduler

Specifications of RXM-GPS-SR-B

• Frequency: 1.575GHz
• Sensitivity: -159dBm
• Current - Receiving: 31mA
• Package / Case: Module
• Processor Used: SiRF Star III
• Operating Voltage: 3 V to 4.3 V
• Operating Current: 31 mA
• Frequency Range: 1575.42 MHz
• Operating Temperature Range: - 30 C to + 85 C
• For Use With/related Products: MDEV-GPS-SR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Voltage - Supply: -
• Operating Temperature: -
• Applications: -
• Memory Size: -
• Data Interface: -
• Data Rate - Maximum: -
• Modulation Or Protocol: -
• Antenna Connector: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 15: Query/Rate Control Example
Table 16: MSG Values
Page 16
Message ID
Msg
Mode
Rate
CksumEnable
Checksum
<CR><LF>
0
1
2
3
4
5
6
7
8
9
103 – Query/Rate Control
Value
This command is used to control the output of standard NMEA messages GGA,
GLL, GSA, GSV, RMC, and VTG. Using this command message, standard
NMEA messages may be polled once, or setup for periodic output. Checksums
may also be enabled or disabled depending on the needs of the receiving
program. NMEA message settings are saved in battery-backed memory for each
entry when the message is accepted.
The table below contains the values for the following example:
1. Query the GGA message with checksum enabled
2. Enable VTG message for a 1 Hz constant output with checksum enabled
3. Disable VTG message
Name
GGA
GLL
GSA
GSV
RMC
VTG
MSS (Not Supported)
Not defined
ZDA
Not defined
$PSRF103
0
1
0
1
*25
Example
$PSRF103,00,01,00,01*25
$PSRF103,05,00,01,01*20
$PSRF103,05,00,00,01*21
seconds
Units
Description
PSRF103 protocol header
See Table 17
0=SetRate, 1=Query
Output – off=0, max=255
0=Disable, 1=Enable Checksum
End of message termination
Description
Table 17: LLANavigationInitialization Example
Table 18: ResetCfg Values
Message ID
Latitude
Longitude
Altitude
ClkOffset
TimeOfWeek
WeekNo
ChannelCount 12
ResetCfg
Checksum
<CR><LF>
0x01
0x02
0x04
0x08
104 – LLANavigationInitialization
Hex
This command was used to initialize the receiver with the current position (in
lattitude, longitude and altitude coordinates), clock offset, and time, enabling a
faster fix. Increased receiver sensitivity and the removal of Selective Availability
(SA) have made this unneccessary. The command is retained for its ability to
reset the module, but the initialization fields are no longer supported.
The table below contains the values for the following example:
Name
Hot Start – All data valid
Warm Start – Ephemeris cleared
Cold Start – Clears all data in memory
Clear Memory – Clears all data in memory and resets receiver back to
factory defaults
$PSRF104
0
0
0
96000
0
0
4
*1A
Example
$PSRF104,0,0,0,96000,0,0,12,4*1A
Units
PSRF104 protocol header
See Table 19
End of message termination
Description
Description
Page 17