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  • Author Author: element14Dave
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Keysight 34470A and Texas Instruments DAC8734EVM

element14Dave

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Evaluate the Keysight 34470A 71/2 digit, Performance Truevolt/DMM and the Texas Instruments DAC8734EVM!

 

 

About the Keysight 34470A and BenchVue

 

 

The Keysight 34470A 7½ digit, Performance Truevolt DMM offer higher levels of accuracy, speed and resolution. Get more

insight quickly with Truevolt DMM's graphical capabilities such as trend and histogram charts, a data logging mode for easier trend analysis and a digitizing mode for capturing transients. Now, make measurements on your very low-power devices from an affordable DMM with a very low current range at 1 µA with pA resolution. The 34470A also has auto calibration to compensate for temperature drift so you can maintain measurement accuracy throughout your workday. image

 

 

For PC or mobile device control, use the 34470A with the Keysight BV0001A BenchVue DMM Pro application. This software displays single measurements, charts, tables, or histograms from a single instrument or multiple DMMs simultaneously to correlate trends you might otherwise miss. Record measurements and export results in a few clicks, or access and control tests on your DMM remotely with the companion BenchVue Mobile app to monitor and respond to long-running tests from anywhere.

 

 

Key features/Specification

  • Keysight 34470A 7½ digit Performance Truevolt DMM
  • Resolutions up to 7½ digits
  • Reading rates up to 50,000 readings/s
  • Memory up to 2 million readings
  • Voltage ranges from 100 mV to 1,000 V
  • Current ranges from 1 µA to 10 A
  • USB and LAN interfaces, optional GPIB

 

Keysight BV0001A BenchVue DMM Pro application

Basic application: instrument configuration, data visualization, 1 hour data logging, exporting data/screenshots

Pro application: in addition to basic features, adds histograms, digitizing and unrestricted data logging with limit checking and alerts

Supports 34401A, 34405A, 34410A, 34411A, 34450A, 34460A, 34461A, 34465A, 34470A


Featured Videos:

Keysight BenchVue DMM Pro application:


Measuring low currents:

 

About the DAC8734EVM

 

The DAC8734EVM features the DAC8734 digital to analog converter. The EVM module provides a quick and easy way to evaluate the

functionality and performance ofimage this high resolution serial input Digital to Analog Converter (DAC). The DAC8734EVM is designed to work by default for bipolar output range, but it can also be configured for unipolar output range by a simple switch change. The EVM provides the serial interface header to easily attach to any host microprocessor or TI DSP base system. Installed precision reference voltages of +5 VDC and +2.5VDC are selectable using onboard switches S2 and S3. REF5050 (+5.0 VDC source) and REF5025 (+2.5VDC) are pin compatible with the REF50xx family allowing a wide variety of reference values.

 

Features

 

    • Bipolar and Unipolar mode of operation is supported
    • Contains all support circuitry needed for the DAC8734
    • Serial interface header to easily attach to TI DSP base communication systems
    • Voltage reference options: onboard 5V, onboard 2.5V or external
    • Jumpers on output pins for gain adjustment
    • Compatible with the TI Modular EVM System
    • Daisy chaining multiple EVMs is supported

 

Terms & Conditions

  • Testers will be selected on the basis of quality of applications: we expect a full and complete description of why you want to test these particular products.
  • Testers are required to produce a full, comprehensive and well thought out review within 2 months of receipt of the product.
  • Failure to provide this review within the above timescale will result in the enrolee being excluded from future RoadTests.
RoadTest Reviews
Comment List
Anonymous
  • in reply to peteroakes

    If I end up winning one of these kits, I will certainly take a look at your code-- it may save me a great deal of time in testing.

     

    I have an LF AC/DC calibration lab [old Valhalla equipment] and an HP3458A that I can use to test the linearity of the DMM.  I want to test every single feature it has, and then I will use it to evaluate the TI DAC.  The DAC looks very promising, and I would like to use it for an arbitrary function generator.  [I can capture a waveform with the DMM, then play it back on the DAC module].  Should be interesting, but hey, I have to win first.  We will see, there were a lot of applicants.

     

    Also, Dave Jones already did a pretty good review on the DMM, it will be hard to dig deeper than he did, but I think he did not take the time to play with every feature.  This DMM will work with temperature probes and has some other special functions too.

     

    One of the things I will be getting into "real soon now" is solar systems for tiny houses, and this DMM would be a great instrument for those projects.  The DAC could be used for a sun-tracking circuit [connected to off-the shelf servos, and controlled by an MCU].

     

    Lots of ideas happening on how I could use these things.  It would make a great video on how I used the DMM to track the voltage/current/power of the solar array, and stored the data on a laptop for further processing.  What a fantastic tool!

     

    I have a client that wants a soil conductivity meter for a garden [for water control without corrosion that an ordinary moisture meter would have], and the DMM would be very helpful in this project [as it accurately converts low-voltage AC to rms readings]-- my 3458A would work for that but it's user interface is more set up for metrology-- and it is a little cumbersome to use in everyday work on the bench-- a LOT of button pushes to get something done-- even something simple...  Plus, I don't want to tie up my 3458A for long periods [and I would pretty much be afraid to take it outside-- it is a "lab queen" after all...

  • in reply to hlipka

    I have Arduino and Launch pad going up today so it should have you covered image

  • in reply to peteroakes

    @Peter - thanks for sharing this. Even though not all tester will use a RasPi, having high-level sample code available will make it easier (especially when the code is already tested).

  • in reply to peteroakes

    I am not (yet ?) a winner but there is a audio project I have discussed and planned by about one year with a fried (he is a music producer and electronic half engineer too) so these information are anyway very useful.

     

    Thanks for sharing. Enrico

  • For whome ever the lucky winners may be, I have been working on software for the DAC8734 Quad DACfrom TI and it is available for the Raspberry PI, Arduino and Launchpads (Ive tested it on a few). There is no reason it will not work on the DAC8734EVM board as the connections are the same as my breadboard.

    Currently I have only posted the software and other info for the PI (As of July 26th 3AM anyway) and will be following up with the rest over the next couple of days

     

    Feel free to use it in your testing and provide feedback please if you find bugs.

     

    I know as I was trying to get to grips with the TI DAC, there was very little information and in the past this has lead to not so well reported Road tests, so I hope this will help the winners get up to speed quickly and not have the pain of figuring out how to even drive the chips, never mind test their abilities.

     

    Have fun and good luck to all

     

    Peter

     

    Here is the link to the RPI Posts, there will also be linked a SPI diagnosis video I had to undergo due to the CHIP not behaving as previous TI SPI chips had, and then a review of the software (Which is more about the PI on Windows 10 than the DAC Chips so you can ifnore that if your not interested in the PI and windows 10 IOT)

     

    Raspberry PI 2.0, Windows 10 and how to drive the DAC8734 from TI (AKA the DAC8734EVM Road test Board)

  • in reply to clem57

    I will investigate further with our Dev team on Monday. At a glance it looks like the applications are secure as intended, there was just a special circumstances in which 's application was visible because of a "share" button. We will take a look and review.

     

    Thanks!

     

    Dave

  • in reply to michaelwylie

    Hi ,

    Texas Instruments, Keysight and element14 will be making the decision on the RoadTesters together.

  • in reply to bodgy

    Thanks for letting us know, the page that it links to is no longer published. I have removed the link for now.

  • in reply to clem57

    So there's 2 things that need fixing here:

     

    1. The broken link;

     

    2. The stupid error message!