Maestro A2200-A Bedienungsanleitung PDF herunterladen (Seite 13)

V1.0-Mar-14

User’s Manual

Page 13 of 43

3 Quick Start

In order to allow an easy and quick start with the A5100-A module, this chapter pro-

vides a short overview on the important steps to be taken to receive NMEA mes-

sages with position information on a serial port (UART).

NOTE 1: The A5100-A needs an external pull-up resistor to be configured for

UART operation. Please consider the pull-up resistor in your design or pull

the GPIO up right after reset by other means.

NOTE 2: The ON_OFF input of the A5100-A needs to be connected to output

of a microprocessor. For a wake-up, including the initial one after power on, a

LOW-HIGH transmission is mandatory.

3.1 Minimum Configuration

Figure 5 shows the minimum configuration for NMEA outputs and commands sent

via an RS232 interface based on the GPS/GLONASS module A5100-A using a

passive antenna. It’s recommended to supply Vcc continuously for normal operation,

the module can enter power saving and hibernation modes by toggling the ON_OFF

pin or sending commands.

Figure 5: Minimum configuration A5100-A with continued Vcc supply

Remarks:

• External antenna input impedance is 50 Ω. Match as close as possible.

• Supply Vcc continuously, use toggling of ON_OFF to switch between normal

operation and hibernate mode

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Maestro A2200-A Bedienungsanleitung Seite 13