Telefonmodems / COM220
COM220 Phone Modem
Ideal für abgelegene Stationen
Geringer Stromverbrauch, weiter Temperaturbereich
wetter wasser energie gas flux & turbulence bauwerke boden


Das COM220 Telefonmodem ermöglicht Kommunikation zwischen einem Computer und einem Campbell Datenlogger über das öffentliche Telefonnetz. Am PC ist ein passendes Modem erforderlich. Das COM220 wird am Logger angeschlossen, fast alle Logger von Campbell Scientific sind kompatibel.

Lesen Sie mehr

Funktionen und Vorteile

  • Wide operating temperature range and low power requirements make it ideal for use at remote sites
  • Supports communication rates up to 115.2 kbps between modem and logger. (In practice, data transmission through phone lines is generally constrained to 33.6 kbps.)
  • Compatible with most Campbell Scientific data loggers
  • Offers both modem enabled (ME) and synchronous device communications (SDC) modes.
  • Allows user to set the number of rings before answering call.


Zugehörige Produkte

Technische Beschreibung

The COM220 has a CS I/O port, power terminals, screw terminals, and an RJ-11C jack. The datalogger connects with the CS I/O port via an SC12 or SC12R-6 cable. The RJ-11C jack is for attaching a surge-protected telephone line. Alternatively, the screw terminals (GND, RING, TIP) can be used to connect the COM220 with a phone line via a surge protector.


Operation Full-duplex over standard analog phone lines
Operating Voltage 12 Vdc
Current Drain
  • ~120 μA (quiescent)
  • ~30 mA (active)
Communication Rate 9600, 38400, 57600, 115200 bps (between data logger and COM220, and selected by user)
Operating Temperature Range -25° to +50°C (standard)
Standards V.92, K56Flex, V.90, V.34, V.32bis, V32, V23, V22bis, V22, V.21, B212, B103
  • FCC US 3A4M508BSM2-T-W
  • IC 2377 A-SM2TW
  • TBR21
Dimensions 16.5 x 2.5 x 6.6 cm (6.5 x 1.0 x 2.6 in.)
Weight 0.16 kg (0.35 lb)

Kompatibel mit

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR200X (retired)
CR216X (retired)
CR5000 (retired)

Halterungen und Masten

Product Compatible Note


Product Compatible Note

Additional Compatibility Information

Phone Line/Surge Protection

Typically, a length of phone line is run from the telephone company's junction box to the COM220s surge protector, and then to the Ground, Tip, and Ring terminals on the COM220. Alternately, if adequate surge protection is provided by the telephone company and the junction box supports it, a length of telephone wire with RJ11C connectors (pn 2365) can be run directly from the junction box to the socket on the COM220.

Data Logger Considerations

Default settings are not compatible for non-PakBus data loggers (i.e., CR5000, CR7, retired data loggers). For these data loggers, the DIP switch settings must be changed; refer to the COM220 manual for details.

An SC12 cable is provided for connecting the COM220 with the data logger.


LoggerNet and PC400 software packages support use of the COM220 with our data loggers. Both of these software packages support automated error-checking or user-initiated contacts. LoggerNet also supports scheduled contact times. Our software can run unattended allowing the user to take advantage of lower off-hour telephone rates.

Enclosure Considerations

The COM220 requires a desiccated, non-condensing environment; a Campbell Scientific enclosure is recommended. Grommets and screws are provided to attach the COM220 to the backplate of our enclosures.


Broschüren Produkte

Übereinstimmung mit Richtlinien u. Vorschriften


COM220 OS v.05 (671 KB) 23-11-2011

Execution of this download installs the COM220 Operating System on your computer.

Note: The Device Configuration Utility is used to upload the included operating system to the COM220.

Liste der Änderungen

FAQs für

Number of FAQs related to COM220: 14

Alle anzeigenWenige anzeigen

  1. Cable runs of that length usually will require a booster of some sort. Contact the local phone company for recommendations.

  2. Not directly. A data logger needs to be used with it, and the remote caller needs to be running LoggerNet or PC400.

  3. No. The COM220 is designed to pick up a call and cannot be overridden. A better approach would be to use a phone line sharing device. Note that the phone line sharing device must simulate a normal phone line accurately or it won’t work correctly with the COM220.

    One phone line sharing device that has been used successfully by our customers is “The Stick” by Multi-Link. This device takes one incoming phone line and breaks it out to four separate lines. It does require ac power to run. For more information, refer to the Multi-Link website.

  4. Campbell Scientific does not recommend VoIP, as it does not work well with data transfers.

  5. The COM220 and the radio can coexist on the CS I/O port provided that they are assigned two different SDC addresses.

  6. There are several possibilities as to the cause. Contact Campbell Scientific for assistance in determining the specific cause.

  7. All dataloggers will work with the COM220 except the CR200X-series dataloggers.


English Channel Tunnel IceWatch System
The Channel Tunnel (or Chunnel) connects the United Kingdom with France. It is actually a......lesen Sie mehr