The CWB100A is the master radio in a Campbell Scientific wireless-sensor network. It polls and stores data from up to 50 wireless sensors, and then passes that data to a datalogger. Its internal radio has a 920 to 928 MHz frequency range, which is used in Australia, Israel, and other countries worldwide.Read More
The CWB100A is the base station used in a Campbell Scientific wireless sensor network. It contains an internal 922-MHz spread spectrum radio that receives data from the wireless sensors in the network. The frequency of the CWB100A's internal radio is commonly used in Australia and New Zealand. The datalogger is connected to the CWB100A for processing and storing the wireless sensor's data.
There are situations when it is desirable to make measurements in locations where the use of cabled sensors is problematic. Protecting cables by running them through conduit or burying them in trenches is time consuming, labor intensive, and sometimes not possible. Local fire codes may preclude the use of certain types of sensor cabling inside of buildings. In some applications measurements need to be made at distances where long cables decrease the quality of the measurement or are too expensive. There are also times when it is important to increase the number of measurements being made but the datalogger does not have enough available channels left for attaching additional sensor cables.
|Operating Temperature Range||-25° to +50°C|
|Operating Relative Humidity||0 to 100%|
|Voltage||4.5 to 22 Vdc|
|Standby Typical Current Drain||< 1 mA (@ 12 Vdc)|
|Receive Typical Current Drain||10 mA (@ 12 Vdc)|
|Transmit Typical Current Drain||20 mA (@ 12 Vdc)|
|Communication||Serial protocol or USB|
|Terminal Block Connector||Bi-directional serial datalogger connection|
|USB Port||Computer connection for configuration|
|Antenna Connector||RPSMA antenna connection|
|Memory Capacity||Can store data table for up to 50 wireless sensors.|
|Dimensions||10.8 x 4.4 x 4.4 cm (4.25 x 1.75 x 1.75 in.) including mounting bracket|
|Weight||140 g (5 oz)|
Internal 25 mW FHSS Radio
|Frequency||920 to 928 MHz|
|Where Used||Australia and New Zealand|
|Transmitter Power Output||25 mW (+14 dBm)|
|Receiver Sensitivity||-110 dBm (0.1% frame error rate)|
|Standby Typical Current Drain||3 μA|
|Receive Typical Current Drain||18 mA (full run)|
|Transmit Typical Current Drain||45 mA|
|Average Operating Current||15 μA (with 1-second access time)|
|Quality of Service Management||RSSI|
|Additional Features||GFSK modulation, data interleaving, forward error correction, data scrambling, RSSI reporting|
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
|CR1000||Must have data logger OS version 21 or higher.|
|CR3000||Must have data logger OS version 21 or higher.|
|CR6||The CR6 datalogger must have data logger OS version 4.0 or higher.|
|CR800||Must have data logger OS version 21 or higher.|
|CR850||Must have data logger OS version 21 or higher.|
The datalogger is programmed to interface with the CWB100A and determine a polling interval. The sensors make their measurements as they are polled. The base station polls all sensors and stores the collected data early enough that it can transfer the data as soon as the datalogger requests it. This minimizes the amount of time the datalogger needs to wait for a response from the network through the CWB100A base station.
At the start of each polling interval, the datalogger polls the base station, and sensor values are transferred to the datalogger for storage. This method of data transfer from the sensors to the datalogger provides the fastest and lowest power method available.
Latest firmware for the CWB100.
Windows USB drivers for the CWB100 are installed via the Device Configuration Utililty. In the Device Configuration Utility, click on the link "install the device driver for the CWB100" in the main body of text for the CWB100.
Note: Driver must be installed before connecting the CWB100 to your computer.