USR-GPRS-MODEM user manual www.tcp232.net
1.2 Technical specifications :
Main features P arameters
Power supply voltage DC: 5~18V
Frequency band
Support four frequency :
GSM850, GSM900, DCS1800, PCS1900
Frequency automatic search
Frequency can be set by AT command
C orrespond with GSM Phase2/2+
AT command GSM 07.07, GSM 07.05 a nd other exten ded AT command
Transmitting power
Class4 (2W): GSM850 and GSM900
Class2 (1W): DCS1800 and PCS1900
GPRS
data characteristic
GPRS upward transmission rate : MAX 85.6kbps
GPRS descending transmission rate : MAX 85.6kbps
Cod ed format : CS-1
,
CS-2
,
CS-3
,
CS-4
Support PAP ( password validation) agreement which is used for
PPP connection
Built-in agreement; TCP/UDP/FTP/PPP, etc
Support packet broadcast control channel( PBCCH)
CSD Circuit switching
CSD transmission rate: 2.4,4.8,9.6, 14.4 kbps
Not t ransparent transmission
Support unstructured supplementary service data( USSD)
M essage
Text and PDU mode
M essage storage equipment: SIM card
RS232 characteristic
Global function serial port
Used for AT command, GPRS and CSD data transmission
Adaptive baud rate : 4800 bps - 115200 bps
Character format : data bit 8
,
stop bit 1
,
no parity bit
Temperature range
Working temperature : -35 to 80 ℃
Storage temperature : -40 to 80 ℃
Hardware interface Specifications
Power
A power socket
S tandard size : Out er diameter 5.5 mm
,
inner diameter 2.1 mm ;
inner + external -; input voltage range 5 ~ 18 v
RS232 interface A RS232 standard interface ( device is female )
SIM card interface
A SIM card interface
Support 3 v/ 1v 8 SIM c ard
Antenna interface A standard SMA interface
Warranty 2 years
1.
3 P ackage:
USR-GPRS-MODEM includ ing the following parts :
