A data logger is normally part of a two-way conversation started by a computer. In applications with some types of interfaces, the data logger can also initiate the call (callback) when needed. In satellite applications, the data logger may simply send bursts of data at programmed times without waiting for a response.
Ethernet Port: RJ45 jack, 10/100Base Mbps, full and half duplex, Auto-MDIX, magnetic isolation, and TVS surge protection.
Internet Protocols: Ethernet, PPP, RNDIS, ICMP/Ping, Auto-IP(APIPA), IPv4, IPv6, UDP, TCP, TLS (v1.2), DNS, DHCP, SLAAC, Telnet, HTTP(S),
USB Device: Micro-B device for computer connectivity
CS I/O: 9-pin D-sub connector to interface with Campbell Scientific CS I/O peripherals.
0 – 5 V Serial (U1 to U12, C1 to C4): Eight independent TX/RX pairs
SDI-12 (C1, C3, U1, U3, U5, U7, U9, U11): Eight independent SDI-12 compliant terminals are individually configured and meet SDI-12 Standard v 1.4.
RS-485 (C1 to C4): One full duplex or two half duplex
RS-422 (C1 to C4): One full duplex or two half duplex
RS-232/CPI: Single RJ45 module port that can operate in one of two modes: CPI or RS-232. CPI interfaces with Campbell Scientific CDM measurement peripherals and sensors. RS-232 connects, with an adapter cable, to computer, sensor, or communications devices serially.
CPI: One CPI bus. Up to 1 Mbps data rate. Synchronization of devices to 5 μS. Total cable length up to 610 m (2000 ft). Up to 20 devices. CPI is a proprietary interface for communications between Campbell Scientific data loggers and Campbell Scientific CDM peripheral devices. It consists of a physical layer definition and a data protocol.
- SS 900 MHz
- 2.4 GHz
Wireless: Wi-Fi, VHF, UHF, spread spectrum, ELOS
Hardwired: Multi-drop, short haul, RS-232, fiber optic
Satellite: GOES, Argos, Inmarsat Hughes, Irridium