two separate 4110s units and channels tied together. What Labview software considerations are needed ?

[TonytheTuna]

For our application board we needed 1.5-2 amp 15v supply we are using the 4110s which is limited to 1 amp /channel in the system. In theory tying the two channels from two difference 4110s looks to solve the problem. Our concern is about the sequencing of the supplies in such a matter as to provide 15v at 2 a without negative effects to the SMUs.

Please provide any considerations that should be used in the LABview code created for this purpose.

[will.i.am10]

Hi TonytheTuna,

I have included two links below which outline the physical setup for this, and also an example code for how to do this in LabVIEW. You should be able to use this example to provide 15V at 2A with two PXI-4110's.

Cascading the Outputs of the PXI-4110 to Extend Voltage and Current Ranges: http://www.ni.com/tutorial/3082/en/

Parallel Channels for Higher Current: http://www.ni.com/example/30358/en/

Thanks,

will.i.am10

[TonytheTuna]

Will,

Thanks . This will help. What over-range is anticipated from the 4110 ? 10% 2.2 amps. ?

[will.i.am10]

Hi Tony,

Can you clarify what you mean by over range? Are you looking for the accuracy of the device? If so, you can see page 2 and 3 of the specifcations to view the accuracy.

PXI-4110 Specifications: http://www.ni.com/pdf/manuals/371635f.pdf

Thanks!

Will

[TonytheTuna]

What I was looking for was when will the instrument clamp ? at 2 amps(1 amp perr channel) ? the specification does not state that data.

[will.i.am10]

Hi Tony,

The MAX current per channel is 1A, so when you set "Max Current" in the example program, it will divide this value by 2 and then input that into each of the current limits for both devices. So when you select 2A as the max current, you will set each devices current limit to 1A.

Thanks!

Will

[TonytheTuna]

OK, we will consider the deviding of the current .