Communications Options and Information

        Communications Specifications:

  • Direct RS232 (Distance < 50 feet)
    SC32B Optically Isolated Interface - The SC32B Optically Isolated Interface is used to connect a PC to the datalogger's CS I/O port via an SC12 or SC12R-6 cable. Optical isolation protects against ground loop, normal static discharge, and noise by isolating the computer's electrical system from the datalogger's electrical system. Baud rates up to 115 kbps are supported.
    Click here to download  SC32B brochure
  • Direct USB
    The SC-USB Optically Isolated Interface is used to connect a datalogger's CS I/O port to a PC's USB port. Optical isolation helps eliminate noise pickup associated with PC power supplies and ground connections.
    Click here to download  SC-USB brochure
  • Ethernet
    The NL115 enables 10baseT Ethernet communications and can store data on a removable CompactFlash card. This small, rugged communication device connects to the 40-pin peripheral port on a CR1000 or CR3000 datalogger. For the CR800 and CR850 Series of dataloggers, the NL100 Network Link Interface can be provided. Both of these devices allow the dataloggers to communicate over a local area network or a dedicated Internet connection via TCP/IP. The NL100 can be connected to either the datalogger's CS I/O port or RS-232 port.
    Click here to download Ethernet brochure

  • Short Haul Modem Interface (RS232)
    Short haul modems support local communication between the datalogger and a computer with an RS-232 serial port. The modem transmits data up to 6.5 miles over four-wire unconditioned line (two twisted pairs).
    Click here to download Short Haul Modem brochure
  • Spread Spectrum Radio
    Spread spectrum radios spread the normally narrowband information signal over a relatively wide band of frequencies. This allows the communications to be more immune to noise and interference from RF sources such as pagers, cellular phones and multipath. Spread spectrum radios do not require an individual license nor frequency coordination through a regulatory agency. Higher receiver sensitivity and signal processing help to compensate for lower power compared to UHF or VHF systems transmitting 5 Watts.
    Click here to download Spread Spectrum Radio brochure
  • Land-Line Dialup Telephone
    The COM220 56K modem enables communications between a computer and a Campbell Scientific datalogger over a public switched telephone network. A Hayes-compatible modem is required at the computer base station. The COM220 connects to the datalogger at the field site. The COM220's wide operating temperature range and low power requirements make it ideal for use at remote sites.
    Click here to download the COM220 brochure
  • Voice-Synthesized Modem
    The COM310 Voice-Synthesized Modem enables anyone to call a datalogger via phone to receive a verbal report of real-time site conditions. The datalogger can be programmed to report specific conditions or to allow a caller to select specific information by pressing numbers on a touch-tone phone. The COM310 supports data transfer rates of 9600 and 1200 baud between datalogger and PC.
    Click here to download the COM310 brochure

  • Digital Cellular Telephone (Verizon, Alltel, AT&T)
    Cellular communication is a convenient alternative for mobile applications or for locations where ordinary phone lines are not established. Cellular communication is advantageous over RF systems because an FCC-assigned frequency is not required. Cellular systems outside the U.S. may not use the same frequency. Therefore, you should consult with an Adams Environmental Systems applications engineer to determine whether this system is compatible for use in a particular country.
    Click here to download the Digital Cellular Telephone brochure
  • CompactFlash cards, storage modules, and RAM cards
    CompactFlash cards, storage modules, and RAM cards store data for later retrieval and can operate in an unattended mode. They provide an independent back-up of datalogger data and supplement the internal data storage capacity of the datalogger.
    Click here to download the CFM100 CompactFlash Module brochure

  • Satellite Communications (GOES, Argos, METEOSAT)
    Satellite transmitters provide one-way communications from the datalogger site to a receiving station. Satellite telemetry is a convenient communication alternative for extremely remote locations where phone lines or RF systems are impractical. Please contact us for specific applications information.

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Adams Environmental Systems, Inc.
PO Box 244
Kings Park, NY 11754-0244
David G. Adams, President

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Last modified: 09/18/08