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Summary of Contents for Campbell DCSCOM
- Page 1 DCSCOM Telephone Modem User Guide Issued 1.3.99 © Copyright 1999 Campbell Scientific Ltd.
- Page 3 Note that goods sent air freight are subject to Customs clearance fees which Campbell Scientific will charge to customers. In many cases, these charges are greater than the cost of the repair. Campbell Scientific Ltd,...
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Page 5: Table Of Contents
Contents 1. Introduction ..............1 2. Installation ..............2 2.1 Modem Configuration................3 3. Power Requirements ..........3 4. Troubleshooting............3 Appendix A. ‘AT’ Command Summary ......A-1 Figures 1. Connector Pin Diagram................2 2. Schematic Diagram of Datalogger-Modem Connections ......3... -
Page 7: Introduction
1. Introduction The DCSCOM modem is fully Hayes compatible and can be used at 1200 baud to both receive calls and initiate calls from the datalogger (using instruction 97). For more information on datalogger programming refer to the description of Instruction 97 in the datalogger manual. -
Page 8: Installation
If you intend to use the modem on a remote telephone line, we recommend that you install lightning arrestors on the telephone line; note that the warranty on the DCSCOM does not cover lightning damage. Please contact British Telecom or Campbell Scientific for further details. -
Page 9: Modem Configuration
User Guide The ringer equivalence number (REN) of the DCSCOM is 3. For NOTE correct operation you should ensure that the sum of the RENs for all equipment connected to one telephone line does not exceed 4. You can usually assume that British Telecom equipment has a REN of 1 unless otherwise marked. -
Page 11: Appendix A. 'At' Command Summary
This manual does not attempt to provide complete instruction on the ‘AT’ command set. However, for convenience, the commands are summarised below. For most applications with a Campbell Scientific datalogger and IBM PC compatible computer, the modem commands are issued automatically by Campbell Scientific software. These commands apply only when the modem is used as an originate modem, which is not the primary use of this modem. - Page 12 DCSCOM Telephone Modem Registers Rings before auto-answer (0..255) Wait for dial tone (2..255 seconds) Wait for remote carrier (1..255 seconds) Comma pause time (0..255 seconds) Delay time between loss of carrier and hang up (1..255 in tenths of seconds)
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