EMS resistance 4139

I have a question for the SMU 4139.

It is able to program the output resistance/impedance.

Its output can be used to simulate a resistance? Floating? Or he is still stuck to the ground.

THX.

Hi kdCMC,

You can program the 4139 NOR as a programmable load.  The attached example allows you to use the functionality of the programmable output to the program directly resistance the resistance of the device.  To do this using the DCV, set the output voltage to 0 V and the resistance value of the output to a value valid for the given current limit range.  DCI mode, set the current 0a output and the output resistance to a valid value for the given value of current level range.

Valid values of resistance are shown below (copied from the technical document):

Note that valid resistance values depends on if you are in mode voltage or DC current.  The value of values also depened on the current limiting current level range or that you have programmed.

The load will always float unless you physically short the LO Terminal to the chassis GND.

Tags: NI Products

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