• Enhanced 3G / Interoperability Protocol• High Speed & IP-based• 4G, Mobile IP

4G

• Voice, Data & Video Signals• Video Telephony / Internet Surfing• 3G, W-CDMA, UMTS

3G

• GPRS, EDGE

• Higher Data Rates• Enhance 2G

2.5G

• Voice & Data Signals• Digital System• GSM, CDMA, TDMA

2G

• Voice Signals Only• Analog System• NMT, AMPS

1G

DGS-200

GSM (Global System for Mobile Communications) is the world's

most widely used cell phone technology, it is a standard developed

by the European Telecommunications Standards Institute (ETSI). GSM

is a second generation (2G) standard for mobile networks.

GPRS technology is an extended version of GSM and this technology

improves the data transmission rate and network capacity.

AMPS

TDMA

GSM

PDC

cdmaOne

IS-95A

cdmaOne

IS-95B

GPRS

CDMA2000 1x

CDMA2000 1xEV

WCDMA

Multi-Mode

Multi-Band

Multi-Network

1G 2G 2.5G 3G

Cellular Generations 1G, 2G, 3G, 4G

•••••

GSM/GPS Experimental Set

DGS-200 covers two topics in modern

communication: GPS technology and

GSM / GPRS technology. In GPS module,

the GPS receiver decodes the NMEA

data strings from the satellites and

outputs them to software interface for

the discussion of current position, speed,

direction, time, etc.

In GSM / GPRS module, the usage of AT commands is introduced. Students

can use software interface to send AT command to control GSM / GPRS module,

send SMS message and make a phone call through headset interface, or access

to the Internet.

System Architecture

Experiment Board

GPS GPRS

MCU

BTS

GPS/GPRS

Internet

Satellite

USER

RS232

TCP/IP

K&H reserves the right to make changes without notice 10708

The interface supports a clear and user-fr iendly experimental

environment. Al l experiments can be implemented step-by-step.

Moreover, students can follow the relevant description of each step

listed in our manual to complete the experiment easily.

Software Function