LabJack U3 User Manual
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0-7 FIO0-FIO78-15 EIO0-EIO716-19 CIO0-CIO3These 12 channels include an internal series resistor that provides overvoltage/short-circuitprotection. These series resistors also limit the ability of these lines to sink or source current.Refer to the specifications in Appendix A.All digital I/O on the U3 have 3 possible states: input, output-high, or output-low. Each bit of I/Ocan be configured individually. When configured as an input, a bit has a ~100 kΩ pull-upresistor to 3.3 volts. When configured as output-high, a bit is connected to the internal 3.3 voltsupply (through a series resistor). When configured as output-low, a bit is connected to GND(through a series resistor).DB15 Pinouts1 Vs 9 CIO02 CIO1 10 CIO23 CIO3 11 GND4 EIO0 12 EIO15 EIO2 13 EIO36 EIO4 14 EIO57 EIO6 15 EIO78 GND2.11.1 CB15 Terminal BoardThe CB15 terminal board connects to the LabJack U3’s DB15 connector. It provides convenientscrew terminal access to the 12 digital I/O available on the DB15 connector. The CB15 isdesigned to connect directly to the LabJack, or can connect via a standard 15-line 1:1 male-female DB15 cable.2.11.2 RB12 Relay BoardThe RB12 provides a convenient interface for the U3 to industry standard digital I/O modules,allowing electricians, engineers, and other qualified individuals, to interface a LabJack with highvoltages/currents. The RB12 relay board connects to the DB15 connector on the LabJack, usingthe 12 EIO/CIO lines to control up to 12 I/O modules. Output or input types of digital I/Omodules can be used. The RB12 is designed to accept G4 series digital I/O modules fromOpto22, and compatible modules from other manufacturers such as the G5 series from Grayhill.Output modules are available with voltage ratings up to 200 VDC or 280 VAC, and currentratings up to 3.5 amps.37 |
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