Driver for RD-31 and 33 by Radian Research Needed

[jyang72211]

Hi all,

Any of you has drivers for RD-31 and 33 by Radian Research?  Thanks!

Yik

[pflores]

Unfortunately, we do not have any listed in our Instrumet Driver Network. Click on Request a Driver to let R&D know you want one. Best bet is to dig into the programmer's manual for the device and make your own. If you do develop a driver, consider submitting it to IDNet.

Best of Luck.

[edjst]

Yik

Did you have any luck finding a driver for the RD-31?

Ed

[jyang72211]

I look around, and at the end, it seems like I have to create my own. 

Yik

[edjst]

Did you have any luck finding a driver for your Radian rd-31?  It seems I'm now in the same boat.

Ed

[14gipper]

I'm not sure how to distribute vi's properly, but here's my offering. I hope this helps.

[jyang72211]

Hi Matt,

Thanks for your help!  I am working on start timed acc test command, and I am getting a reponse string back with no check sum with it.  Do you know why?  Thanks!

Yik

[14gipper]

Hi Yik,

I found a problem with my checksum routine not properly calculating the check sum. You may want to update that with the version I have attached. The RD should always reply with a checksum. I would suggest increasing your read time. Better yet, the 3rd and 4th bytes indicate the length of data that follows and then the checksum is added to that with 2 more bytes. Hope this helps.

Regards,

Matt

[jyang72211]

Hi Matt,

For the start timed acc test command, I am sending the following:

A60A 0004 0000 9D2E 017F

(Test time ~ 2s)

I am getting

A30A

back only.  The 00AD checksum at the back is missing.  I waited 10s before the read, but it doesn't help.

I also need some help with the harmonics functions. 

1. Do you have more documentation on the trigger harmonics function?  I need more information in order to understand, expecially on the data portion of the transmited packet.

2. do you have to trigger each harmonics issuing the read harmonics command?  What is the best way to get it to work? 

Thanks!

yik

[14gipper]

Yik,

I've tried the same command here and I recieved the proper checksum. Does the instantaneous metrics function work? I have had endless problems with USB to Serial adapters. Do you have a physical serial port you can try this on?

The Harmonics function has to be read in segments in order to get all harmonic numbers. Specify the base harmonic as a starting point, then proceed on from there till you get all the numbers you're looking for. The first column in the attached vi's is amplitude. Second Column is phase. Third column row one is the THD number. The rest of the third column is reserved for future use..