2 - Hardware Description [U6 Datasheet] | LabJack
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2 - Hardware Description [U6 Datasheet]

Hardware Description Overview

The U6 has 3 different I/O areas:

  • Communication Edge: Has a USB type B connector. 
  • Screw Terminal Edge: Convenient connections for 4 analog inputs, both analog outputs, 4 flexible digital I/O (FIO), and both current sources. The screw terminals are arranged in blocks of 4, with each block consisting of Vs, GND, and two I/O. Also on this edge are two LEDs. One simply indicates power, while the other serves as a status indicator.
  • DB Edge: Has 2 D-sub type connectors: a DB37 and DB15. The DB37 has some digital I/O and all the analog I/O. The DB15 has 12 additional digital I/O (3 are duplicates of DB37 I/O).

Figure 2-1.  Enclosure & Connectors


USB:  All power and communication is handled by the USB interface.

LEDs:  The Power and Status LEDs convey different information about the device.

GND/SGND:  All GND terminals are the same.  SGND has a self-resetting thermal fuse in series with GND.

VS:  All VS terminals are the same.  These are outputs that can be used to source about 5 volts.

10UA/200UA:  Fixed current sources providing 10µA/200µA at a max voltage of about 3 volts.

AIN#:  AIN0-AIN13 are the 14 analog inputs.

DAC#:  DAC0 & DAC1 are the 2 analog outputs.  Each DAC can be set to a voltage between about 0.02 and 5 volts with 12-bits of resolution.

FIO#/EIO#/CIO#/MIO#:  These are the 20 digital I/O, and are also referred to as DIO0-DIO19.  Besides basic digital I/O operations, some of these terminals can also be configured as Timers & Counters (frequency input, PWM output, etc.), SPI serial, I2C serial, and Asynchronous serial.


For information about reading inputs, start in Section 3.  For information about setting outputs, start with the Waveform Generation Application Note.


U6 Block Diagram

Figure 2-2. Block Diagram





Sorry, it's not easy to find a connection diagram of the U6 screw terminals

I would go to the section related to the terminals you are interested in.  If you don't find what you need there post in that section.  For example, if you are wondering about how to connect a sensor to analog inputs, go to Section 2.6

If you mean the 1200x900 blowup of fig 2.2, that's because the web designer didn't understand how to set the palette transparency, making the terminal indications invisible in some browsers and image editors.

labjack support's picture

That would be Google.  It is a Google Drawing and they generate the png.  Try this link <link removed>.  I made the Google Drawing public so you can look at the original.

labjack support's picture

We no longer publicly share this Google drawing. Refer to the block diagram on this page instead.

I also changed the background to white.  See if the 1200x900 png works now.