RXM-GPS-F4-T Linx Technologies, RXM-GPS-F4-T Datasheet - Page 29

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RXM-GPS-F4-T

Manufacturer Part Number
RXM-GPS-F4-T
Description
GPS Modules F4 Series GPS Recvr Module Tape and Reel
Manufacturer
Linx Technologies
Datasheet

Specifications of RXM-GPS-F4-T

Rohs
yes
Frequency Band
1575.42 MHz
Number Of Channels
48
Time To First Fix (cold Start)
32 s
Acquisition Sensitivity
- 159.5 dBm
Horizontal Position Accuracy
3 m
Operating Supply Voltage
1.8 V
Operating Supply Current
56 mA
Interface Type
Serial
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Dimensions
15 mm x 13 mm x 2.2 mm
Minimum Operating Temperature
- 30 C
104 – LLANavigationInitialization
This command is used to initialize the receiver with the current position
(in lattitude, longitude and altitude coordinates), clock offset, and time,
enabling a faster fi x. 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 fi elds are no
longer supported.
Figure 27 below contains the values for the following example:
$PSRF104,37.3875111,-121.97232,0,96000,237759,1946,12,1*07
Figure 27: NavigationInitialization Example
Figure 28: ResetCfg Values
1. Use 0 for the last saved value if available. If this is unavailable, a default value of 96000
LLANavigationInitialization Example
ResetCfg Values
ChannelCount
is used.
TimeOfWeek
Message ID
<CR> <LF>
Checksum
Longitude
ResetCfg
ClkOffset
WeekNo
Latitude
Altitude
Name
0x01
0x02
0x04
0x08
Hex
Description
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 the receiver
back to factory defaults
37.3875111
-121.97232
$PSRF104
Example
237759
96000
1946
*07
12
0
1
seconds
degrees
degrees
meters
Units
Hz
25
Description
PSRF104 protocol header
Latitude position (Range 90 to –90)
Longitude position (Range 180 to
–180)
Altitude position
Clock Offset of the Evaluation
Receiver1
GPS Time Of Week
Extended GPS Week Number (1024
added)
Range 1 to 12
See Figure 28
End of message termination

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