GM-205810-000 DeLorme, GM-205810-000 Datasheet - Page 14

• Manufacturer Part Number: GM-205810-000
• Description: MODULE GPS RCVR GPS2058
• Manufacturer: DeLorme
• Type: GPS Moduler

Specifications of GM-205810-000

• Frequency: 1.575GHz
• Data Rate - Maximum: 57.6 kbps
• Modulation Or Protocol: GPS
• Applications: GPS Receiver
• Current - Receiving: 50mA
• Data Interface: PCB, Surface Mount
• Memory Size: 16kB Flash
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40 Pin
• Processor Used: STA2058
• Operating Voltage: 3.3 V
• Operating Current: 85 mA
• Frequency Range: 1575.42 MHz
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: Consumer handheld, PND (portable navigation), in-vehicle navigation/telematics systems
• Other names: GM-205810-000TR

Command: Cold Start
Format: $PDME,0<cr><If>
Variables: None
Return: If monitoring NMEA, the module will issue power-on start-up message (Delorme F/W and H/W versions are displayed),
satellite vehicle NMEA message should indicate only 1 satellite (i.e., $GPGSV,1,1…) and the active satellite message will
indicate no fix ($GPGSA,A,1…).
Operation: Suspends GPS operations, clears ephemeris and almanac, invalidates user position and RTC, then issues restart/reset
Application: Diagnostic purposes – used to reproduce TTFF for an initial acquisition.
Command: Warm Start
Format: $PDME,1<cr><If>
Variables: None
Return: If monitoring NMEA, the module will issue power-on start-up message (Delorme F/W and H/W versions are displayed),
satellite vehicle NMEA message will maintain existing information but the active satellite message will indicate no fix
($GPGSA,A,1…).
Operation: Suspends GPS operations, clears ephemeris then issues restart/reset
Application: Diagnostic purposes – used to reproduce TTFF for a device that had a previous fix and is downloading new
ephemeris info.
Command: Hot Start
Format: $PDME,2<cr><If>
Variables: None
Return: If monitoring NMEA, the module will issue power-on start-up message (Delorme F/W and H/W versions are displayed),
satellite vehicle NMEA message will maintain existing information but the active satellite message will indicate no fix
($GPGSA,A,1…).
Operation: Suspends GPS operations, then issues restart/reset
Application: Diagnostic purposes – used to reproduce TTFF for a device that had a previous fix and is downloading new
ephemeris info.
Command: Get Version Information
Format: $PDME,4,n<cr><If>
Variables: n = 1, 2, 3 or 4
Return:
If n=1, return is “$PDME,4,1, GPS2058_FW_1.0.0”;
if n=2, return is “$PDME,4,2, GPS2058_HW_1.0.1”;
if n=3, return is “$PDME,4,3, GPS_LIBRARY_VERSION GPSLIB_5.4.1.5 GNU – Jun 11 2007 10:05:32”;
if n=4, return is “$PDME,4,4, WAAS_VERSION SBASLIB_01.08.03 – Jun 11 2007 10:05:42”.
Operation: n=1 returns DeLorme firmware revision, n=2 returns DeLorme hardware revision, n=3 returns GPS library revision,
n=4 returns SBAS/WAAS library revision
Application: Informational; n=1 and n=2 are valuable for revision checking by systems integrators
Command: Get Dilution of Precision Threshold Values
Format: $PDME,5<cr><If>
Variables: None
Return: “$PDME,5,<pdop3>,<hdop3>,<vdop3>,<pdop2>,<hdop2>,<vdop2>”
Operation: Returns the threshold values used for determining a fix; by default these are very large values. 3-D thresholds are
sent first, followed by 2D.
Application: Informational; used in conjunction with the Set DOP to restrict or loosen initial position calculation thresholds
Command: Set Dilution of Precision Threshold Values
Format: $PDME,6,n,f1,f2,f3<cr><If>
Variables: n=3 for 3D DOP thresholds, n=2 for 2D DOP thresholds, f1=positional DOP, f2=horizontal DOP, f3=vertical DOP
Return: “$PDME,6,OK” if the command is accepted
Operation: Sets the thresholds used for initial positional accuracy calculations in either 3D or 2D fix types.
Application: Used for restricting or loosening initial position calculations. Threshold DOPs may range from 1 (ideal) to 50
(poor), but tend to be set to large values, e.g., 30. Operational DOPs, which are different than the threshold DOPs, typically
range from 1-2 (ideal to excellent)
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