User manual

Confidential, the whole present document is the sole property of Maestro Wireless
Solution Limited.
5
Name Descriptions
Signal Strength Strong (CSQ 27 or higher)
Signal Strength Medium (CSQ 23 – 26)
Signal Strength Low (CSQ 14 – 22)
Signal Strength Weak (CSQ 1 – 13)
Rx Data receive over TCP/UDP
Tx Data transmit over TCP/UDP
EDGE Availability of EDGE
GSM Status OFF – Modem is off
On – Modem is not registered to GSM network
Slow blinking – Modem is registered to GSM network
Fat blinking – Modem is in GSM communication
b. SMA female antenna connector
Connect this to an external antenna with SMA male connector. Make sure the
antenna is for the GSM 900 / 1800 or GSM 850 / 1900 frequency with impedance of
50ohm, and also connector is secured tightly.
c. 9-Pin D-Sub Female connector (RS232)
The connector provides serial link to the modem
Sub-D 9
p
in
Pin number Name EIA designation Type
1 DCD Data Carrier Detect Output
2 RXD Receive Data Output
3 TXD Transmit Data Input
4 DTR Data Terminal Ready Input
5 GND Ground Ground
6 DSR Data Set Ready Output
7 RTS Request To Send Input
8 CTS Clear To Send Output
9 RI Ring Indicator Output