5 earth ground connections, 6 communication connections, 1 sc-cpi to cpi bus connection – Campbell Scientific CDM-VW300 Series Dynamic Vibrating-Wire Analyzer System User Manual

Page 54: 2 datalogger to sc-cpi connection, Earth ground connections, Communication connections, Sc-cpi to cpi bus connection, Datalogger to sc-cpi connection, 14. earth, Ground