Products > Test Equipment

Issues (?) with Keithley 2231A-30-3 DC Power Supply

(1/4) > >>

I ordered a Keithley 2231A-30-3 DC power supply and it seems like there might be a problem with stability.  Channel one seems fine-ish but channels two and three just seem a bit suspicious.

Channel 2 and 3 don't want to stay on the voltages type in.  If I put 2.0 into channel 2, it will drift down to 1.99.  In order for the screen to stay at 2.0, I have to enter 2.01... see photos below.

Please watch this video on what it's doing and let me know if you think there is an issue I.


Thank you,

- Wil

That’s a 10mV discrepancy.

That power supply’s specs list 0.06%+20mV setpoint accuracy and 0.06%+20mV readback accuracy. So even if we ignore the %, that’s up to 40mV discrepancy between setpoint and readback. You’re well, well within spec.

This is not a voltage reference.
For a power source is a very good precission.

I have the same unit for a couple of months now and I like it.
I only find the display a little dim compared to the meters I have.

I have also written a program to control it from the PC so I can turn every output on and of at will and not all at the same time.


Great!  I feel a lot better about the purchase now. Thank you!

- Wil


[0] Message Index

[#] Next page

There was an error while thanking
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod