2 power and ground, Power and ground, 1. wiring for sensor connections – Campbell Scientific AVW200-series Vibrating Wire Interfaces User Manual
Page 27: Figure 4-1, N 4.2, Figure, Ee figure 4-1)

AVW200-series 2-Channel Vibrating Wire Spectrum Analyzer Modules
FIGURE 4-1. Wiring for Sensor Connections
4.2 Power and Ground
Each AVW200 has a ground lug for connection to earth ground and a green
connector for attachment to a power source (see FIGURE 4-2).
Only connect the AVW200 ground lug to earth ground when the
AVW200 is not directly connected to the datalogger. When a
datalogger is in the same enclosure, only connect the datalogger’s
ground lug to earth ground.
The AVW200’s ground lug is connected to earth ground via an 8 AWG wire.
This connection should be as short as possible.
The 19246 power cable is shipped with each AVW200 for connection to a
power source. The cable terminates in pigtails that attach to the 12V and G
terminals on the AVW200 and the power source. Often the AVW200 is
powered by the datalogger, but another 12 Vdc power source may be used.
NOTE
AVW200
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