Yokogawa DL7440 USB driver

[K C]

Hi,

Does your DL7440 has another interface. I use DL scopes with GPIB and Ethernet and that works fine.

When I find the time I will try my DL1740 with USB but this might take a while....

[Borsti]

Hi

it does have a gpib port and a usb one. Thats it. The Version i have got is without a ethernet connection.

[Borsti]

And thanks a lot for taking the time for trying the usb port

[K C]

But, let me guess, you don't have a GPIB interface on your computer ?

[Borsti]

No not realy.

Well I already suggest my supervisor to get a GPIB to USB cable cause i hope that this works. But the thing is that i am in New Zealand and the guys from the electrical engineering department said they dont have this sort of thing. And to buy one is quite expenisve. Round about 1000 NZ $. 😞

Do you reckon its better to use the gpib port rather then USB?

[K C]

Yes, it is a lot of money for just one interface for one instrument.

I use the DL together with other instruments, so this is easier with GPIB. btw. is you have a test-setup with 10 instruments like I have you pay twice this amount. Good cable are also expensive.

For one instrument I don't think GPIB is better than USB but it depends on your use. 

[Borsti]

@ KC: Hi

I some how think it works now. But not sure, there are still a lot of error messages coming up but i keep trying.

For example I used the getting started.vi. After I change all Visa Classes from Instr to USB RAW the big Arrow on the upper left corner turned from broken and grey into a white one. But sitll it wouldn't measure things.

You said you use a Yokogawa device ,too. Can I ask you a few questions regarding the commands used in Lab View?

Kind regards

[K C]

You can always ask and sometimes you will get the answers   

[Borsti]

Hi

Thanks, i will ask some on Monday cause I am not at Uni at the weekend.:)

[Borsti]

Hi

It somehow works now. I just had to change the visa instrument class to USB Raw since Intr is the default value.

But if I use the readmeasure.vi which should measure a signal it only replys NaN. I figured out that it means not a number.

and it uses the command meas:chan1:ptop:val?

I guess it has to do something with the format but i don't know how to change it. Can you help me?