Overview
The SDM-IO16A has 16 ports that expand the digital input and/or output capability of Campbell Scientific data loggers. This module offers similar functionality to the control ports of the majority of Campbell Scientific data loggers.
The SDM-IO16A was designed to replace the SDM-IO16. The SDM-IO16A is more compact in comparison and has gas-discharge tubes fitted on all inputs for improved surge protection. It is fully software-compatible but also includes an option to run in a special high-speed mode that allows pulse measurements up to 8 kHz on all channels and four times more resolution on some timing measurements.
Benefits and Features
- 16 digital I/O ports
- When configured as an input, each port can monitor logic state, count pulses, measure signal frequency, and determine duty cycle
- Consumes less than 1 mA power in most applications
- Compact package with spring-loaded, vibration-resistant terminals
- Connects to the data logger via three ports that can be shared with up to 15 other SDM devices
- Multiple different functions for programming each input and different function assignments for different ports on the same module
- Capability of each terminal to directly drive low-voltage valves or relays
- I/O lines protected against high-level surges with gas discharge tubes
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