Campbell Hausfeld COM220 Manual Do Utilizador

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COM220 Telephone Modem 
Table of Contents 
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1.  Introduction..................................................................1 
1.1  General Description ..................................................................................1 
1.2  Computer Requirements ...........................................................................2 
2.  Specifications ..............................................................3 
3.  Installation....................................................................3 
3.1  Connecting to Datalogger .........................................................................3 
3.2  Connecting to Earth Ground.....................................................................4 
3.3  Telephone to MD485 or Telephone to RF Systems..................................4 
3.4  Telephone Service ....................................................................................4 
4.  Modem Settings ...........................................................6 
5.  Troubleshooting ..........................................................7 
Appendices 
A.  Changing COM220 Settings ................................... A-1 
A.1  DIP Switch Settings ............................................................................ A-1 
A.2  Hayes AT Commands ......................................................................... A-2 
A.3  Downloading a New Operating System to the COM220.................... A-6 
A.4  Program Examples .............................................................................. A-7 
A.4.1  ModemCallback Example (for CR1000) .................................. A-7 
A.4.2  DialModem Example (for CR1000).......................................... A-8 
A.4.3  P97 Instruction (for CR10X)..................................................... A-9 
A.4.4  Example Programs for Data-Callbacks via a CR1000 
Datalogger Router .............................................................. A-11 
B.  CS I/O Connection................................................... B-1 
B.1  CS I/O 9 Pin Connection......................................................................B-1 
C.  Theory of Operation ................................................ C-1 
C.1  Theory of Operation.............................................................................C-1