2 single-ended measurement reference, Figure 32: lightning-protection scheme – Campbell Scientific CR1000 Measurement and Control System User Manual
Page 89
Section 7. Installation
89
lightning strike. Figure Lightning-Protection Scheme
(p. 89)
shows a simple
lightning-protection scheme utilizing a lightning rod, metal mast, heavy-gage
ground wire, and ground rod to direct damaging current away from the CR1000.
Figure 32: Lightning-protection scheme
7.5.2 Single-Ended Measurement Reference
Low-level, single-ended voltage measurements are sensitive to ground potential
fluctuations. The grounding scheme in the CR1000 has been designed to eliminate
ground potential fluctuations due to changing return currents from 12V, SW-12,
5V, and C1 – C8 terminals. This is accomplished by utilizing separate signal
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