USGlobalsat ER-506 - Manual (Page 3)

ER-506
High Performance GPS Module
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Product Pin Description
PIN Number(s) Name Type Description Note
1,5 GND P Ground.
2 VIN P
This is the main power supply to the engine
board. (4.5Vdc to 6.5Vdc)
3 RXD I
This is the main receive channel for
receiving software commands to the engine
board from SiRFdemo software or from user
written software. Baud rate based on flash
memory setting.
4 TXD O
This is the main transmits channel for
outputting navigation and measurement
data to user’s navigation software or user
written software.
6 Directive O This pin indicates the GPS states.
Electrical Specification
Absolute Maximums Ratings
Parameter Min. Typ. Max. Conditions Unit
POWER Supply
Main power supply(VCC) 4.5 5.0 6.5 V
45 50 55 GPS is not 3D Fixed. mA
Main power supply Current
33 34 38 GPS is 3D Fixed. mA
RF
Input Impendance 50 Ω
Operating Frequency 1.575 Ghz