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Electronic Measurement

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34972A may freeze when LAN connection is under control after power-up
Yes. The first thing to remember is that the 34972A freeze because the user is trying to communicate with the instrument right after power-up. During that time, the instrument is not yet in ready mode. To prevent the problem, please set a delay (approximately 20s or more time until the instrument boot up completely) after power-up before attempting the LAN communication.

FAQ 2016-11-01

34972A with USB data logging may eventually freeze. How to prevent?
Yes, experience has shown that using a powered USB 2.0 Hub between the 34972A and the PC usually eliminates the problem.Using LAN instead of USB is the recommended solution if possible.

FAQ 2016-10-26

What type of internal memory is installed into the 34972A LXI Data Acquisition Switch Unit?
The Keysight 34972A LXI Data Acquisition Switch Unit utilizes Windows CE...

FAQ 2014-04-07

How can previously created data in BenchLink II be exported?
Open a previously saved configuration file with data and then export the data as a Text (.txt) file or Comma Separated values (.csv) file.

FAQ 2012-11-05

How many Keysight 34970A data acquisition units can be connected to a single PC at a time?
Only one Keysight 34970A can be connected for each RS-232 port on the PC. A GP-IB cable can be used to connect up to 15 units if the GP-IB cable is being referenced by the VEE software. The Benchlink Data Logger 3 software can support up to 4 units...

FAQ 2012-01-25

The Benchlink Data Logger Software is unable to see my 34970A even though it is connected, how do I correct this?

FAQ 2011-12-20

Can Excel control a scan, and make and record measurements using the 34970A?
Use the 34970A IntuiLink add-in, Excel Macro language, or the Instrument Code Wizard.

FAQ 2011-12-20

Why does BenchLink DataLogger 3 generate the "MDAC installation failed" error message?
The MDAC (Microsoft Data Access Components) may be corrupted and needs to be repaired.

FAQ 2011-12-20

How do I rack mount two instruments of different depths?
There are three ways to rack instruments of different depths side-by-side; for example, a Keysight 33220A with a Keysight 34401A.

FAQ 2010-10-12

34970A: How do I add a DMM to a 34970A that does not have one installed?
Order the customer installable retrofit kit 34970-80100.

FAQ 2010-10-12

Why won't Help (.hlp) files view properly with Windows Vista?
In order to view 32-bit Help (.hlp) files with Windows® Vista, you must download the WinHlp32.exe Help program from the Microsoft web site at

FAQ 2010-10-12

Can I retrieve data from the 34970A while it is scanning?
No. You can collect data during a scan, stop the scan and then transfer the data.

FAQ 2010-09-09

Why does BenchLink 3 generate the "Object reference not set to an instance of an object" error?
This error is caused by corruption in the .NET Framework

FAQ 2010-09-08

How can I copy Channels to Other Channels in BenchLink 3?
Select the channel(s) to be copied, right-click and select copy, select the channel(s) to be pasted, right click and select paste.

FAQ 2010-09-08

How can I remotely view what modules are installed in the 34970A?
Use the SYSTem:CTYPe? {100|200|300} SCPI command or System.CardType( ) IVI COM object.

FAQ 2010-05-16

What is the temperature coefficient supported by the 34970A for RTD temperature measurements?
The 34970A supports PT100 RTD's with an alpha=0.00385, RTD's with alpha=0.00385, or alpha=0.00391.

FAQ 2010-05-16

Are there separate licenses for 34970A and 34980A instruments?
Yes. Each instrument uses a specific Data Logger Pro product number.

FAQ 2010-05-05

Can I mix 34980As and 34970As in the same configuration?
You can have a combination of one 34980A and one or two 34970As in a configuration.

FAQ 2010-05-05

Can I use the National Instruments 34970A LabView Driver and Examples with the 34972A?
Yes, there is a new Labview driver that supports both the 34972A and the 34970A...

FAQ 2010-04-16

34970A: Is there a battery in the Keysight 34970A?
Yes. the 34970A contains an internal battery that provides power to the internal real-time clock, stored states, and reading storage memory when the instrument ac line power is removed.

FAQ 2010-01-12

Can strain gauges be measured with the Keysight 34970A?
The 34970A can measure strain gauges using 4-wire ohms measurements and return the strain value using the math formula Mx+B.

FAQ 2009-11-18

How Do I Measure Resistance With A 3-Wire Device?
If you are using a 3-wire device (ie. 3-wire RTD), to measure it accurately, you have to first measure the resistance of R1+R2+Rm then subtract the resistance you measured of R2+R3.

FAQ 2009-09-28

Why Can’t I Open the BenchLink II AgtDB.mdb Database File in Microsoft® Access?
The file is password protected to prevent any changes to be made to the file.

FAQ 2009-03-13

Can I save on the 34970A data synchronously during a scan?

FAQ 2009-03-12

What is the expected lifetime of the relays used in the Keysight 34970A plug-in modules?
The Keysight 34970A Relay Maintenance System automatically counts the cycles on each relay in the instrument and stores the total count in non-volatile memory on each switch module.

FAQ 2008-01-08

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