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Rigol DP832 - Firmware list and bugs

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garrettm:
Its alive again!

I've been stuck at home with what might very well be corona virus (or a very bad case of the flu), and finally decided to write the Telnet script in Java. Java sockets made writing the Telnet client a breeze and with TooOldForThis's reverse engineered SCPI commands I was able to recalibrate channel 1 and 2 better than before the manual calibration fiasco. Honestly, I don't see why people avoid using Telnet, its super convenient and avoids messing with drivers, bulky software and hardware adapters. The only hiccup I noticed was that I had to add some latency between sending commands to the Tek DMM4050, otherwise it would start missing commands. Some 50-60 milliseconds seemed to do the trick.

MegaVolt:

--- Quote from: garrettm on March 05, 2020, 05:14:00 am ---Well, looks like they can't publicly release the SCPI cal routine.
--- End quote ---

Files found on the Internet:

cpposteve:
That’s awesome news. I use telnet on some access control panels that we fit for high security applications. And it’s nice to use. But wouldn’t really know where to start when it comes to re calibrating the output voltages.

My actually output voltage is only 5ma off but the read back voltage is around 10-20ma over. Which is annoying. It iratates me when I select for instance 4v and it displays 4.012v on the screen. WHY? It’s really annoying. Surely it should just show what I’ve programmed in. And it doesn’t. I have no idea why. If I wanted 4.011v I would select it. And seeing as it has a resolution of 1mv for accuracy why does it display so far over?

Rant over 😂

I would eventually (it’s brand new, just received mine) recalibrate it so it matches exactly what my meter reads like I could do on my old farnel psu. But that was older and you could use trim pots to get it to exactly where you wanted it. And it just stayed there.

I think I may struggle with re-calibrating this one.

Steve

McBryce:
If it only showed you what you programmed in, then when it went into constant current mode you wouldn't see the voltage dropping. That would be worse.

McBryce.

ornea:
I thought ADC resolution was the cause. 

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