The SDM-CD16D increases the number of digital outputs that can be controlled (i.e., set to 0 or 5 Vdc) by a Campbell datalogger.

The SDM-CD16D is commonly used to drive normal logic level inputs. It can also source some current; when an output is set HI, a ‘boost’ circuit allows the SDM-CD16D to source a current of up to 100 mA, which allows it to directly control low voltage valves, relays, etc.

Features

• Replaces the SDM-CD16
• Intended for low voltage, low power applications not suitable for the SDM-CD16AC
• Drives normal logic level inputs
• Directly controls low voltage valves, relays, etc.
• Complies with EN55022-1:1988 and EN50082-1:1988
• Designed and manufactured by Campbell Scientific Ltd (UK)

Specifications

• Operating voltage: 9 to 18 Vdc
• Current drain 100 microamps typical (all ports HI, no load)
• Output voltage (no load): Output ON/HI, Nominal 5 V (minimum 4.5 V)
• Output OFF/LO: Nominal 0 V (maximum 0.1 V)
• Maximum Output Current (total all outputs): 400 mA and 50°C and 12 V supply. The maximum current should be derated under the following conditions: 50 mA for every 10°C above 50°C and/or 50 mA for every volt above 12 V.

Resources

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