Campbell Hausfeld COM220 A. Changing COM220 Settings, B. CS I/O Connection, C. Theory of Operation, Appendices, Introduction, Installation, Specifications, 4. Modem Settings

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

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