Campbell SDM-CD16ACA, Product Manual

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3. Power considerations
The SDM-CD16ACA power requirements are large compared to most Campbell Scientific
products. For most applications, an external power supply (see
Figure 3-1 [p. 3]) is recommended
to power the SDM-CD16ACA.
For some applications, it may be convenient to use the data logger supply to power the
SDM-CD16ACA (see
Figure 3-1 [p. 3]). For long-term applications, the lead acid power supply
available with Campbell Scientific data loggers should be used, allowing the batteries to be float
charged. It is not recommended that the data logger alkaline supply be used to power the
SDM-CD16ACA for long-term applications due to its large power requirements.
Figure 3-1. Connection block diagrams
SDM-CD16ACA 16 Channel AC/DC Controller 3