Hayes Microcomputer Products ASLH306 manual Supplying power to the modem, Battery powered version

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The 25 way D-type connector is wired as follows:

Pin number, name and mnemonic:

2

Transmit Data

TxD

3

Receive Data

RxD

4

Request to Send

RTS

5

Clear to Send

CTS

6

Data Set Ready

DSR

7

Signal Ground/Supply Ground

SG

8

Data Carrier Detect

DCD

9

Power In

PI

15

Power In

PI

20

Data Terminal Ready

DTR

22

Ring Indicator

RI

Supplying power to the modem

The Delta Plus MOBILE II GSM/GPRS modem is powered via the RS232 interface connector. Pins 9 and/or 15 require a +7 to +24 Volts DC supply (issue F. board) Earlier issues of the board require +7 to +15Volts. The modem consumes 0.3 Watts. (See appendix). The supply to the modem is floated across internal SuperCaps. These devices hold a considerable charge and will allow the modem LED’s to continue to function for several minutes after the removal of the power supply. This enables the modem to be used in environments where the power supply is either intermittent and/or inadequate (within reason) for a conventional modem product.

Battery powered version.

The GSM/GPRS modem is also available as a battery powered device. The battery employed in the modem is a Lithium Ion Polymer type and is subject to a minimum duty cycle of 1000 operations.

The battery is fitted in addition to the “Super Caps” that are present in the standard modem and will power the modem for approximately two minutes after the external supply has been removed. This is regardless of whether or not the modem is on line. When the modem shuts down it will issue a “Goodbye” message to the interface.

Additionally the modem can be switched off using an AT command. The AT+K command will shutdown the entire modem (not just the Sony Ericsson module as is the case with other ASLH 306 products) within 15 seconds. If the power supply to the modem is not removed within 30 seconds

ASL Holdings Limited

19/09/2005

6

Draft Copy Version 2c

 

 

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Contents Draft Copy ASL Holdings Limited 19/09/2005 Draft Copy Version 2c Contents Hardware User Guide Guide to the manual Disclaimer Copyright Notice TrademarksIntroduction Features Connecting to your Terminal or ComputerSupplying power to the modem Battery powered versionAntennae Subscriber Identity Module card Configuring the modemAT Command set AT aAT H AT DAT E Eenmea +CGATTAT O AT QAT Z AT &F AT &CAT &D AT&VAT &W ASL Holdings Limited 19/09/2005 Draft Copy Version 2c Sony Ericsson commands AT&WRegisters AT+CGMRAT+CBST? Modem result codesGprs operation Remote Access RC OKPay As You Go Payg SIM Support Quick brown fox jumps over the lazy dog. Data LED Status GSM Mode Version 2.02 LED Status Gprs Mode Version 2.08 and aboveTechnical Specifications ASL Holdings Limited 19/09/2005 Draft Copy Version 2c Appendices ASLH306 Firmware revision chart V4.0b AppendixAppendix Appendix Glossary of terms and abbreviations Converting Hex to Decimal Converting Hex to Octal Index ASL Holdings Limited 19/09/2005 Draft Copy Version 2c

ASLH306 specifications

Hayes Microcomputer Products, a pioneer in the modem industry, introduced the ASLH306, a significant advancement in telecommunications technology. This device was designed to improve communication efficiency and data transmission rates for personal computer users and businesses alike.

The ASLH306 is notable for its robust architecture, which allows it to support various communication standards. This versatility makes it compatible with a range of systems, from early personal computers to more advanced setups. One of the key features of the ASLH306 is its ability to operate at high baud rates, enabling faster data exchange compared to its predecessors.

In terms of connectivity, the ASLH306 utilizes an RS-232 interface, which has become a standard for serial communication. This interface not only supports reliable data transfers but also ensures compatibility with a wide array of devices, including printers and various peripherals. The ASLH306 is equipped with built-in error correction protocols, which enhance the reliability of data transmission by minimizing the chances of data loss during transfer.

The device also includes advanced features such as automatic dialing and answering capabilities, which streamline the process of connecting to remote systems. Users can easily configure these settings, making it more user-friendly for individuals and organizations that rely heavily on modem technology for their daily operations.

Another characteristic of the ASLH306 is its compact design, reflecting the trend towards smaller, more efficient hardware solutions in the tech industry. This portability is particularly advantageous for mobile professionals and field workers who require reliable communication solutions without the bulk of larger devices.

Hayes Microcomputer Products also placed emphasis on the user's experience with the ASLH306 through a well-designed user interface. The intuitive controls and clear indicators make it simple to monitor connections and troubleshoot issues as they arise. Overall, the ASLH306 stands out due to its combination of speed, reliability, and user-friendliness, marking it as a key player in the evolution of modem technology.

By delivering a blend of advanced features and efficient performance, Hayes Microcomputer Products has positioned the ASLH306 as an invaluable tool in the landscape of data communication, catering to the needs of both casual users and professionals seeking dependable connectivity solutions.
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