Campbell Scientific COM200 User Manual
COM200 TELEPHONE MODEM
INSTRUCTION MANUAL
REVISION: 5/01
COPYRIGHT (c) 1997-2001 CAMPBELL SCIENTIFIC, INC.
This is a blank page.
Warranty and Assistance
815 W. 1800 N.
Logan, UT 84321-1784
USA
Phone (435) 753-2342
FAX (435) 750-9540
www.campbellsci.com
Campbell Scientific Canada Corp.
11564 -149th Street
Edmonton, Alberta T5M 1W7
CANADA
Phone (780) 454-2505
FAX (780) 454-2655
Campbell Scientific Ltd.
Campbell Park
80 Hathern Road
Shepshed, Loughborough
LE12 9GX, U.K.
Phone +44 (0) 1509 601141
FAX +44 (0) 1509 601091
The
COM200 TELEPHONE MODEM is warranted by CAMPBELL
SCIENTIFIC, INC. 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. 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.
Non-warranty products returned for repair should be accompanied by a
purchase order to cover the repair.
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COM200 Telephone Modem
Table of Contents
1. Introduction
2. Specifications
3. Installation
4. Troubleshooting
5. Modem Settings in Non-Volatile Memory
Appendixes
A. Modifying the Non-Volatile Memor y
................................................................ 1
1.1 General Description ................................................................................. 1
1.2 Computer Requirements........................................................................... 1
............................................................. 1
.................................................................. 2
3.1 Connecting to Datalogger ........................................................................2
3.2 Connecting to Earth Ground....................................................................3
3.3 Telephone to MD9 or Telephone to RF Systems..................................... 3
3.4 Telephone Service.................................................................................... 3
......................................................... 6
................. 7
......................A-1
A.1 Hardware Connection to COM200......................................................A-1
A.2 Remote Communication to the COM200............................................ A-1
A.3 Hayes at Command Summary.............................................................A-3
B. CS I/O Connection
B.1 CS I/O 9 Pin Connection..................................................................... B-1
C. Theory of Operation
C.1 Theory of Operation............................................................................ C-1
..................................................B-1
...............................................C-1
D. FCC Warning to Users of
Class A Computing Devices
E. IC Information
F. The 10704 12 V Adaptor
.........................................................E-1
..........................................F-1
i
.............................D-1
COM200 Telephone Modem Table of Contents
List of Figures
1 COM200...................................................................................................... 2
2 CR10X with CR10X Wiring Panel and COM200 Using
Remote Telephone Line ..................................................................................4
3 CR10X with CR10 Wiring Panel and COM200 Using
RJ11C Telephone Jack.................................................................................... 5
A-1 CR10X with CR10 Wiring Panel and the old COM200 Using
RJ11C Telephone Jack................................................................................A-2
A-2 COM200 to Computer Connection.....................................................A-2
B-1 CS I/O Pin Out.....................................................................................B-1
List of Tables
1 Dataloggers that Require Direct 12 VDC Connection to COM200 ............3
F-1 Dataloggers that Require Direct 12 VDC Connection to COM200..... F-1
ii
COM200 Telephone Modem
1. Introduction
1.1 General Description
The COM200 Modem is a 9600/1200 baud modem employing the Hayes AT
command set. Its primary use is as a remote site modem connected to a CSI
datalogger. The modem is powered and enabled by the battery-powered
datalogger. When not active, the COM200 draws less than 120 µA from the
datalogger’s 12 VDC output.
The COM200 is connected to a CSI datalogger by using a 9-pin subminiature
D connector cable. This is the same 9-pin CS I/O connection common to all
Campbell Scientific products. This is not an RS-232 connection. Appendix B
describes the configuration of this connector.
The COM200 can be used as an originate modem at the datalogger site. To
originate a call to the computer, the datalogger is programmed using
Instruction 97. Instruction 97 is described in detail in the datalogger manual.
1.2 Computer Requirements
2. Specifications
A Hayes compatible modem is used at the co m puter site with Campbell
Scientific computer software to call the datalogger attached to the COM200.
The computer’s modem must be configured to the proper settings using the
modem initialization strings listed in the software programs.
To communicate at 9600 baud, the calling modem’s error correction must be
enabled. If your modem initialization string has an &Q0, you will need to
change it to an &Q5 in order to enable the error correction. You must
continue to use your old string for any communication at 1200 baud.
• Bell 212A, CCITT V.22, and CCITT V.32 compatible
• Full duplex at 9600 and 1200 baud to datalogger
• V.42 LAPM and MNP2-4 error correction
• Hayes AT command set
• RJ-11C telephone jack
• FCC and IC (formally known as DOC) approval
• Pulse or tone dialing
1
COM200 Telephone Modem
CAMPBELL
SCIENTIFIC
INC.
Complies with Part 68, FCC rules. FCC Registration No. B9QUSA-31402-MM-T
Ringer Equivalence 0.6B.Required Connector USOC RJ11C. Canadian Load No. 5
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unacceptable interference to radio and TV reception requiring the operator to take
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• Current drain: 120 µA quiescent, 140 mA active
• Direct connection to and powered by CSI dataloggers
• Supply requirements: 12 VDC regulated power supply
• Internally switches 12 VDC external power minimizing current drain
• Logic levels: below 1.5 V inputs a low state and above 3.5 V inputs a
high state. A low voltage level on the TX data input (pin 9) and RX data
output (pin 4) represents a mark
o
• Operational temperature: -25
C to +50oC
• Size: 5.2” x 1.7” x 3.6” // 13.1 x 4.3 x 9.2 cm
• Weight: 0.75 lbs // 0.34 kg
COM200 MODEM
12V
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3. Installation
3.1 Connecting to Datalogger
M
A
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IN
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TIP
A
RING
GND
FIGURE 1. COM200
The COM200 is designed to be used with standard analog telephone lines. It
will not work with a digital telephone line. Connection to telephone companyprovided coin service (central office implemented systems) is prohibited.
Connection to party line service is subject to state tariffs.
Connect the cable from the telephone RJ11C jack to the modem as shown in
Figure 3. If the telephone company has not installed surge protection in the
telephone line (no RJ11C jack), one must install surge protection (Model 6362
or 2372-01) and connect the ring and tip terminal blocks as shown in Figure 2.
Current Campbell Scientific dataloggers provide 12 VDC to the COM200 via
the SC12 cable (Figure 2). Older dataloggers do not provide 12 VDC on the
datalogger's CS I/O 9 pin connector. When used with the older dataloggers
listed in Table1, 12 VDC and ground need to be connected via the green power
connector on the side of the COM200 (see Figure 3).
2
Table 1. Dataloggers that Require Direct
12 VDC Connection to COM200
CR10(X) w/ silver wiring panel
CR10(X) w/ black CR10 wiring panel (P/N 8032)
21X(L)—serial number 13,442 or lower
CR500serial number 1764 or lower
CR7—700X serial number 2778 or lower
BDR301 and BDR320
3.2 Connecting to Earth Ground
Connect the green 14 awg grounding wire (provided with the COM200) to the
grounding terminal (GND) on the COM200 and to the enclosure’s earth
ground connection. If the site does not have a grounded enclosure, then
connect the ground wire directly to an earth ground connection. The
datalogger ground should also be tied to the earth ground.
COM200 Telephone Modem
CAUTION
The modem must be grounded for its transient protection to
work.
3.3 Telephone to MD9 or Telephone to RF Systems
Telephone to MD9 or telephone to radio systems can be utilized for
communicating with multiple dataloggers through one telephone line. Nothing
additional or special is required for the telephone part of the link. See the
MD9 or RF Manuals for complete information on their special requirements.
3.4 Telephone Service
The goal of the telephone company is to provide you with the best service it
can. In order to do this, it may occasionally be necessary for them to make
changes in their equipment, operations, or procedures. If you have any
questions about your telephone line, such as how many pieces of equipment you
can connect to it, the telephone company will provide this information upon
request. If the telephone company requests information concerning the
equipment which you have connected to your telephone line, the FCC
registration number and the ringer equivalence number (REN) of the COM200
are listed on it’s label. Additional tech nical information from the FCC an d IC
on the COM200 is available in Appendix D and E, respectively.
3
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