Power output
The data logger can be used as a power source for communications devices, sensors and peripherals. Take precautions to prevent damage to these external devices due to over- or under-voltage conditions, and to minimize errors. Additionally, exceeding current limits causes voltage output to become unstable. Voltage should stabilize once current is again reduced to within stated limits. The following are available:
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12V: regulated 12
VDC Volts direct current.. The 12 VDC supply is regulated to within 10% of 12 VDC as long as the main power supply for the data logger does not drop below the minimum supply voltage. See Power requirements. -
5V: regulated 5
VDC Volts direct current.. The 5 VDC supply is regulated to within a few millivolts of 5 VDC as long as the main power supply for the data logger does not drop below the minimum supply voltage. It is intended to power sensors or devices requiring a 5 VDC power supply. It is not intended as an excitation source for bridge measurements. Current output is shared with the CS I/O port; so, the total current must be within the current limit. See 5 V fixed output specifications. -
SW12: program-controlled, regulated switched 12
VDC Volts direct current. terminals. Voltage on a SW12 terminal will be approximately the same as the 12V terminal. Each SW12 terminal has an independent current limit. CRBasic Campbell Scientific's BASIC-like programming language that supports analog and digital measurements, data processing and analysis routines, hardware control, and many communications protocols. instruction SW12()controls the SW12 terminal. See the CRBasic Editor help for detailed instruction information and program examples:
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CS I/O port: used to communicate with and often supply power to Campbell Scientific peripheral devices.
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C terminals: can be set low or high as output terminals . With limited drive capacity, digital output terminals are normally used to operate external relay-driver circuits.
See also Power output specifications .