a
Important note the Engineering Sample support only passive GPS antenna
a
6.2.3
Mini USB B Female connector
USB port is used for data communication and configuration, driver are available for Windows XP, 7, Android and
Linux. Please make sure you install the driver package (File: USBDriverInstallerV3841.exe) before plugging the
device in. If you already plug it in, please reinstall the driver using those from the package.
USB will enable and emulate a Device, a Network Adapter and multiple COM Port on computer to access:
–
CNS port,
–
DM port,
–
NMEA port,
–
and AT command port.
6.2.4
15-Pin D-Sub Female connector (RS232/Audio)
This connector provides serial link and audio link to the modem.
Pin Number
Name
EIA designation
Type
Note
1
NC
2
TX
Transmit Data
Input
3
NC
4
MICR
Input
With 2VDC bias output
5
MICROPHONE -
Input
With 2VDC bias output
6
RX
Receive Data
Output
7
NC
8
NC
9
GND
Ground
Ground
10
S
Output
11
CTS
Clear To Send
Output
12
RTS
Request To Send
Input
13
RI
Ring Indicator
Output
14
RESET
Input
Pull low to reset
15
SPEAKER -
Output
Specification of microphone and speaker to be connected:
Parameters
Min
Typical
Max
Microphone current @2V/2K Ohm
0.5mA
Microphone input level
100mVpp
Speaker output current 150 Ohm/1nF
16mA
Speaker impedance
32
Ω
50
Ω
Please refer to the document "Application note - Power supply & Audio" for more information about audio connection.
22
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support@maestro-wireless.com
