How interface keithley 230 programmable voltage source on a circuit containing Optical spectrum analyser and Tunable laser source.

[ambrado]

i have downloaded the keithley 230 software and i put it together with the necessary strings,its working .my aim is to insert it in the existing vi,use it to step up voltage (auto)after each specified run and  output is collected and ploted at each desired voltage level. also i dont know if sweep voltage is required to achiev this or if also i need to clear memory often.

Pls can somebody help me!!!!

ambrado.

[david.bolt]

Dear Ambrado

The best advise I would give is to contact keithly of how to use your device and how it is setup first. I would also take a look at the below link for reference:

Programmable DC Power Supply and Precision DC Source Tutorial

Let me know what Keithly advise.

[ambrado]

Hi engineer david ,

Thanks for your advise, so far i was able to resolve to this two VI circult attached.one of the Vi comprise of the attenuator,optical spectrum analyser,and tuneable laser source,it sweep correctly with no hiccup,though the attenuator is disconnected. the second is the voltage  control vi.

I need to combine  them to enable them work as follow;

>the voltage vi we begin with a voltage value say 1v and the other vi sweep on this voltage for a known period and

>the voltage Vi step to another voltage value say 2v and sweeping is carried out again on this voltage etc until it finaly get to the maximum voltage,then the whole vi

stop.

also i want the voltage vi to be in visa addressing format.

pls i need to summit this work soon,help combine this.

Kudos to u sir.

[Lnoskin]

Hi Ambrado,

I know you posted about this a few years back, but I was wondering if you still had copies of the driver you created. In the attached link you have subVI's, like Keithley 230 Function, etc. Could you possibly post those?

Thanks,

Lindsey

[GerdW]

Hi Lindsey,

did you search for drivers in the IDNet provided by NI?

[Lnoskin]

I have. There is one driver on there but it doesn't successfully pair with my instrument and only includes one VI

[GerdW]

Hi Lindsey,

you're right, it's a very old example consisting of an LLB containing just one VI. It's as old as your device…

But: It shows how simple it is to command your K230.

They have a very simple command set and you can (in contrast to the old GPIB functions in this example) use VISARead/Write to send commands to your device and read its response!

All the commands are given in the K230 manual…

[Lnoskin]

Right, but do you have any idea why they don't actually work? When I run the driver nothing communicated with the instrument.

[GerdW]

Hi Lindsey,

why they don't actually work?

How is your K230 connected to your computer?

Did you get any error mesages?

Did you try to communicate with the K230 using MAX? Did it work there?

As I wrote before: use VISA functions to communicate with your device. Those GPIB functions in this driver example are rather "obsolete"…

[arwc]

I switched over the commands to VISA commands as stated and I recieve no errors, but nothing actually happens. The Keithley 230 doesn't actually set to the new voltage point. Any thoughts???