H7708 GSM/ GPRS unit

Related humidity:95%( non-condensing)

Store temperature:-40~+85?C

Operation temperature:-20~+55?C

Weight: H7709(180g)  H7708(120g)

                      H7708 (85x40x30 )mm (not including antenna)

Mechanical:H7709 (96x60x30 )mm (not including antenna)

4) Others

     Peak current: 1.25A/+12VDC; Communication: 70mA/+12VDC; Idle: 25mA@+12VDC

     GPRS Low consumption product:

     Peak current: 1.25A/+12VDC; Communication: 150mA/+12VDC; Idle: 60mA@+12VDC

     GPRS standard product:

Consumption

Voltage: +7.5~+26VDC (+5VDC optional)

3) Power

Voice interface: Standard voice level input/output

Configuration interface: RS-232 (57600bps)

     Connector: 3.5mm pluggable terminal block (14~24AWG)

     Rate: 300~115200bps

     Type: TTL/RS-232/RS-422/RS-485

Serial data interface

SIM: 3V

Antenna: 50/SMA-K Female

2) Interface

Complied with SMG31bis specifications

Code Scheme: CS1 - CS4

GPRS Class 2~10

Support 900/1800MHz

Support GSM/GPRS

     Integrated with HMI/MMI/SCADA software (for Chinese market only)

3. Hongdian H7708/H7709 DTU Specifications
1) Data

     Powerful data service center testing tool

     Complete function data service center software for transparent data transmission

     Complete set of Chinese and English version demo source code (VB, VC, C#, Delphi)

     Full function development package

Full function data service center development kits

     Configuration via AT+ command

     TDP protocol parameter configuration

     Remote configuration by SMS

     Remote configuration via data service center

     PC based configuration tool

     Built-in Chinese or English configuration tool

Parameters configuration and remote management

     Self-define heart-beating data frame

     Self-define online report interval

     Self-define re-connecting interval

     Self-define customized data frame separator

     Self-define last packet idle interval and MTU

     Self-define transparent or protocol communication

     Supports TCP/IP Server/Client, UDP/IP, DDP, SMS, AT

Flexible data communication

     Supports customized setting for each data service center

     Supports up to 4 data service center communication
     Supports main/backup data service center communication

Multiple data service center communications

     Data loop testing

     GPRS data and SMS backup and switch;

     Online control interface with the connected device;

     Data trigged online; Ring and SMS trigged online;

     Always online: automatic online while it powered on,
     automatic redial and keep-alive while the line dropped;

Multiple operation model

     Hongdian ADP and AT+ protocol, satisfying the customized applications

     Hongdian DDP protocol, ensuring the data channel reliability

Built-in multiple communication protocols
     PPP, TCP/IP, UDP/IP

     Flexible to support different networks, easy to spread;

     Separated design between CPU and wireless module;

Modularization design with super spread

     Industrial class components,Industrial class GPRS wireless module, Embedded RTOS 

Industrial design for different application environments

Embedded PPP, TCP/IP stack
2) Enhanced functions

Reliable, flexible, easy to use and management

Standard antenna and SIM interface

Industrial class pluggable terminal block

Power on/off control

Smart power management

Wide range power input

Optimized EMC design

Supports Xmodem protocol and firmware updating

Support Carrier public & special APN

Supports peer to peer, center to multi-point data transmission

Supports GPRS data channel and SMS backup

Supports DNS and dynamic data service center IP address

Supports static data service center IP address

Transparent data conversion and protocol transmission

Embedded PPP, TCP/IP stack

1) Basic functions

TDP- Terminal/DTU Protocol, it is the data transmission protocol between DTU and user terminal. it is Hongdian registered trade mark.

2. Hongdian H7708/H7709 DTU Features

DDP - DTU/DSC Protocol, it is the data transmission protocol between DTU and data service center. it is Hongdian registered trade mark.

DTU - Data Termination Unit, it is Hongdian registered trade mark.

H7708/H7709 GPRS DTU is a public-platform-based and embedded wireless DDN Data Termination Unit (DTU) which is designed from highly industrial automatization integration and compatibility of market application. It provides differential requirement from different fields, users and applications. Embedded with TCP/UDP protocol, industrial design with 20-pin sockets, it converts the user data into GPRS network and transmits the data into the customers data service center while its embedded in terminals which can provide mobility. H7708/H7709 GPRS DTU  is embedded with user terminals without casing as of further embedded than normal .With the professional designing, H7708/H7709 GPRS DTU provides the plug and play, easy to use and maintenance features.

Hongdian Data Termination Unit (DTU) have been widely used for many application areas in the world, such as electric power, oil field, coal mine safety, weather forecast, environment protection, hydrology, heating pipe line, gas pipe line, street lamp control, telecommunications, post, bank and many other areas.
 

 H7708/H7709 GPRS DTU is a data termination unit based on GPRS mobile network. It provides data communication network for industrial applications. With the reliable, flexible and cost-effectiveness features, it can be utilized at many areas to provide the M2M communication channels by GPRS DDN.
 

1. GPRS unit General

GPRS unit: Embedded unit,Transparent data transmission;Point to point,point to multi-point data transmission;Always online