USGlobalsat EM-5318 - Manual (Page 5)

EM-5318
High Performance GPS Module
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Electrical Specification
Absolute Maximums Ratings
Parameter Min. Typ. Max. Conditions Unit
Power
Power supply voltage(VCC) 3.3 3.3 5.5 V
Backup battery supply 2.0 3.5 V
Main power supply Current 45 50 55 GPS is not 3D Fixed. mA
Backup battery supply Current 35 38 45 GPS is 3D Fixed. uA
MMCX output power 2.8 For external active
antenna
V
DC Electrical characteristics
Parameter Symbol Min. Typ. Max. Conditions Units
TXD Output Voltage V
TO
VCC V
RXD Input Voltage V
RI
3.6 V
High Level Output Current I
OH
2 mA
Low Level Output Current I
OL
2 mA
Receiver Performance
Sensitivity
Chipset Tracking :
Chipset Autonomous acquisition :
-163dBm
-160 dBm
< 35s
Cold Start – Autonomous
<15s (with CGEE)
< 35s
Warm Start – Autonomous
2
< 15s(with CGEE)
Time-To-First-Fix
1
Hot Start – Autonomous
3
< 1s
Horizontal Position Accuracy
4
Autonomous < 2.5m
Velocity Accuracy
5
Speed
Heading
< 0.01 m/s
< 0.01 degrees
Reacquisition 0.1 second, average
NMEA Update Rate Output data format based on SPI flash memory setting
Maximum Altitude < 18,000 meter
Maximum Velocity < 515 meter/ second