GM-205810-000 DeLorme, GM-205810-000 Datasheet - Page 17

• 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: System Control Set A, Return Estimated Position Error
Format: $PDME,12,n<cr><If>
Variables: n = 5
Return: “$PDME,12,<horizontal error>,<vertical error>”
Operation: Returns a running statistical estimate of horizontal and vertical positional errors in meters.
Application: Useful for general evaluation of accuracy, particularly if a more elaborate data collection tool is not available to
collect and analyze the data in more detail.
Command: System Control Set A, GPS Leap Seconds
Format: $PDME,12,n<cr><If>
Variables: n = 6
Return: “$PDME,12,<leap second value>”
Operation: Returns the number of leap seconds added to UTC relative to maintain consistency with mean solar time (and GPS
timing).
Application: Valuable information for UTC synchronized GPS systems.
Command: System Control Set B, Software Standby Mode
Format: $PDME,13,n1,n2<cr><If>
Variables: n1 = 1, n2 = any integer
Return: “$PDME,13,OK” if the command is accepted
Operation: This is used to put the module into standby mode; if n2=0, the module enters standby mode indefinitely and
requires an external wakeup (pin 5 high) or reset (pin 6 low) to remove the standby; any other value of n2 is equivalent to the
number of seconds the module remains in standby
Application: This is valuable for power savings. The module drops to less than 100uA during standby, so it may be self timed
off the RTC crystal or left in standby indefinitely until woken up by hardware.
Command: System Control Set B, WAAS Control
Format: $PDME,13,n1,n2<cr><If>
Variables: n1 = 2, n2 = 0 or 1
Return: “$PDME,13,OK” if the command is accepted
Operation: If n2 = 0, WAAS can be disabled; if n2 = 1 (default), WAAS is (re)enabled;
Application: In most cases, leaving WAAS enabled provides the better fix. If WAAS is disabled, the vacated processing channel
can be used to capture information from another GPS satellite.
Command: System Control Set B, Set SBAS Satellite PRN Code
Format: $PDME,13,n1,n2<cr><If>
Variables: n1 = 3, n2 = valid SBAS PRN codes
Return: “$PDME,13,OK” if the command is accepted
Operation: This is used to select a specific WAAS satellite by PRN code. As of this writing, valid WAAS PRNs are 122, 134, 135
and 138 (East Coast). Valid EGNOS satellites are 120, 124 and 126. Valid MSAS satellites are 129 and 137.
Application: This can be used to improve the fix time for WAAS (by eliminating the need for hunting) or to improve a fix if the
module is located on the boundary where two SBAS satellites are available and one is obscured.
Command: System Control Set B, Set RF Test Satellite PRN Code
Format: $PDME,13,n1,n2<cr><If>
Variables: n1 = 3, n2 = 0 – 11 (GPS correlator channel number)
Return: “$PDME,13,OK” if the command is accepted
Operation: This is used to select a specific satellite for the RF Test (NMEA) Message (see section on “NMEA Messaging
Configuration”)
Application: This is a diagnostic which will return the PRN, center frequency, phase error and CN0 (gain) of the satellite in that
GPS correlator channel.
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