Yokogawa DL7440 USB driver

[Borsti]

Hi all,

i just started to use Lab View ( Version 9) a couple of weeks ago. My goal is to communicate with an Oscilloscope ( DL 7440) By Yokogawa via USB. Unfortunately the device didn't show up after plugging it into the Computer. And I also could not find any suitable drivers in the Internet. So i used the NI driver wizard and eventually the device would show up in Device Manager(NI- VISA USB Device)  and  in MAX ( USB0::0x0B21::0x0001::NI-VISA-0::RAW). I was also able to communicate with the device via the Visa Test Panel --> Basic I/O ( used the command  :communicate:remote on).

But somehow i am not able to use .vi 's that i found on the ni website and I couldn't find a getting started.vi for the device i use.

My Questions are:

1) Has any one an idea where i could get a suitable driver from so that i can use the dl7440 without knowing to much about the communication protocol?  If possible i would like to avoid the USB RAW.

2) Has anyone some example vi for the yokogawa DL7440 or an idea where i could download some?

3) If i can choose between a usb communication and a GPIB communication what might be better to use?

I thank you so much for taking the time to help me.

Kind regards

[Dennis_Knutson]

By using the VISA wizard, you probably made a big mistake. Don't really know what kind of search you did. I googled 'Yokagawa DL7440' and the very first result brought me here with a link for software. It lists a USB driver.

I think you should really be in contact with Yokagawa about getting the scope recognized by windows.

[Borsti]

Hi,

i should have mentioned this as well. I alreadz tried this one and what happend is that i can see the device in the device manager but not in the MAX.

Once i can see it in the device manager it also should pop up in the max, shouldn't it?

[Dennis_Knutson]

Not necessarily. The only time you will see something in MAX is when the driver is USBTMC (Test & Measurement Class). This is a standard and is what you will get from Agilent and Tek. I don't know what Yokaqawa uses. How is it described in windows device manager?

Access to their documentation requires registration and I am not inclined to add myself to their email list. Perhaps someone with more knowledge will respond but as I said, the best source for information is Yokagawa and their manual. The USB is apparently used in a couple of different ways such as plugging in a mouse or a flash drive besides remote control. There has to be some documentation from them on how to switch different modes.

[Borsti]

Hi,

it comes up in the device manger as Yokogawa USB Device --> DL Series.

Well there are 3 USB ports on the back of the oscilloscope. Two of them are  of the USB typ A and are for peripherals and the one I use is USB type B and is supposed to be used for PC Communication.  So i guess there is no need to switch modes.

I do have a manuel but it says not much about the usb connection.

[Borsti]

I attached the manuel. if you dont mind you can have a look. maybe u find more.

[Dennis_Knutson]

All I really looked at was section 2.4. Once that is set and you unplug/plug the USB connection, see if anything changes in MAX. I looked briefly at the code but my VB skills are poor and I'm not sure how the USB communication works.

[Borsti]

No nothing happens.

Still thanks for your help

[K C]

Hi,

In the ZIP's you will find the USB driver and LV program for the DL7400 series.

Kees

[Borsti]

Hi

Thanks for the attachments.

But it still doesn't work :(.  I mean the device shows up as I wrote in my first entry but thats about it. When I open one of the vi.'s that are included in YKDL 7400 than the device is not to see in the window VISA session. So why is it? What am i doing wrong? It does show up when I go to  "Select VISA Class" ---> "I/O Session" --> USB RAW instead of INSTR. But than the whole vi wont work.

Any idea ?