Product Description

Impedance
50 ohm
Input power
> 2 W peak power
VSWR absolute max
<= 10:1
VSWR recommended
<= 2:1
Table 6 – GSM Antenna requirements
3.4.5.4 Short Range Antenna Requirements
The short range antenna for GG864-2.4device shall fulfill the following requirements:
Short Range ANTENNA REQUIREMENTS
Frequency Range
2.4 GHz
Bandwidth
2.30 – 2.50 GHz
Gain
< 4 dBi
Impedance
50 ohm
VSWR recomme
nded
<= 1.5:1
Table 7 – Short Range Antenna requirements
3.4.6 Serial Port
The RS232 standard interface serves to connect a PC, Data Terminal Equipment (DTE) or an
application, witch acts as host controller of the SWS-GW with all its functions.
Serial port connects directly the host controller with the UART-Debug of the ARM chip of SWS-GW.
RS232 level translator is present on board.
3.4.6.1 RS232 standard interface connector
The connector mounted in the SWS-GW is a standard RS232 Sub-D 9pin female with these
characteristics:
 Baud rate from 300 to 115.200 bit/s
 Autobauding (300 to 38.400 bit/s)
Pin-out (refers to DTE side):
PIN Signal Description
1 - NC
2 RXD RX Output
3 TXD TX Input
4 - NC
5 GND GROUND
6 - NC
7 - NC
8 - NC
9 - NC
Table 8 – serial port pin-out
To connect to a host controller, a pin-to-pin 9pin cable with D9 type connectors on both sides is
needed (1 male & 1 female). Shielding of this cable is recommended and its length shall not exceed
3 m.
(FRONT VIEW)