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to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products. The customer shall assume all costs of removing, reinstalling, and shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL SCIENTIFIC, INC. will return such products by surface carrier prepaid. This warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products which have been subjected to modification, misuse, neglect, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special, indirect, incidental, or consequential damages. Products may not be returned without prior authorization. The following contact information is for US and International customers residing in countries served by Campbell Scientific, Inc. directly. Affiliate companies handle repairs for customers within their territories. Please visit to determine which Campbell Scientific company serves your country. To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. After an applications engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. CAMPBELL SCIENTIFIC's shipping address is: CAMPBELL SCIENTIFIC, INC. RMA#_____ 815 West 1800 North Logan, Utah 84321-1784 CAMPBELL SCIENTIFIC, INC. does not accept collect calls. COM300 Voice Communication Modem Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections. 1. Introduction.................................................................1 2. Hardware and Software Requirements .....................1 2.1 COM300 Modem......................................................................................1 2.2 Voice Capable Datalogger ........................................................................2 2.3 Telephone .................................................................................................2 2.4 LoggerTalk Voice Communication Programming Software.....................2 3. Hardware Installation..................................................3 3.1 Site Installation .........................................................................................3 3.2 Properly Grounding the COM300 System................................................4 3.3 Powering the COM300 Modem................................................................4 3.4 Telephone Service.....................................................................................5 3.5 Repairs ......................................................................................................6 4. LoggerTalk Software Installation...............................6 5. Using the COM300 for Standard Modem Communications in PC208W.....................................7 6. Additional Features ....................................................7 6.1 Security.....................................................................................................7 6.2 Commercial Mode ....................................................................................7 6.3 Renaming Menu Strings for Input Location, Ports, and Flags ..................7 6.4 Using the COM300 to Hear Output Location Data...................................8 7. Callback - Datalogger Initiated Calls .........................8 8. Troubleshooting..........................................................8 8.1 For Problems Encountered When Making Voice Calls ............................8 8.2 For Problems Encountered When Making Data Calls ..............................9 i COM300 Voice Communication Modem Table of Contents A. CS I/O 9 Pin Serial Port..........................................A-1 A.1 Pin Description.................................................................................... A-1 B. Theory of Operation...............................................B-1 B.1 Theory of Operation ............................................................................ B-1 C. Changing RAM or PROM Chips in the CR10........C-1 C.1 Disassembling the CR10...................................................................... C-1 C.2 Installing New RAM Chips in CR10s with 16K RAM........................ C-1 C.3 Installing New PROM ......................................................................... C-2 D. FCC Warning to Users of Class A Computing Devices ...................................................................D-1 E. IC Information ...................