Campbell Scientific AVW200 AVW200-series Vibrating Wire Interfaces - Page 20

AVW200-series 2-Channel Vibrating Wire Spectrum Analyzer Modules NOTE Check the manufacturer's specification for the sensors frequency and excitation range before picking the begin/end frequencies and excitation voltage. For example, the following AVW200() instructions can be used to measure two sensors: AVW200(Result,Com1,200,200,Dst(1,1),1,1,1,1000,3500,2,_60HZ,1,0) AVW200(Result,Com1,200,200,Dst(2,1),2,1,1,1000,3500,2,_60HZ,1,0) Where, AVW200 connects to datalogger control ports 1 & 2 via 17855 cable (option Com1) Begin Frequency = 1000 End frequency = 3500 Excitation voltage = 12 V peak to peak (option 2) Read more! A thorough description of the AVW200() instruction and its parameters is provided in Section 6.1. A complete example program that measures two vibrating wire sensors (no multiplexer) is included in Section 7.1.1. 3.1.2 Wireless Connection Onsite Sensors AVW206 Sensors RF401 Office Datalogger Power Supply Cable that Comes with Sensor 19246 Power Cable SC12 CS I/O Cable Wireless Connection For this example configuration, the sensor(s) are attached directly to the AVW206. The AVW206 interface transmits the data to an RF401 spread spectrum radio that is connected to the datalogger. At the AVW206 site, do the following steps: 1. Configure the AVW206 for RF communications as described in Section 5.1, Connecting to DevConfig, and Section 5.2.1, Communications. 2. Attach the vibrating wire sensor(s) to the AVW206 as shown in FIGURE 4-1. 12