AnsweredAssumed Answered

vrf usb PIC interface

Question asked by VRFuser on Mar 23, 2005
Latest reply on Mar 23, 2005 by VRFuser
Hi Detlef and vrf,

To expand on Detlef's explanation, VISA USB support is only available for USB Instruments, not for random USB devices (i.e. not for scanners, digital cameras, printers, random designs, etc).

What defines a "USB Instrument" for this purpose?

Check out the support matrices at <www.agilent.com/find/sw_compatibility>. You can find the spec that the instrument is required to meet at the bottom of the following matrices:

Matrix of Agilent IO Libraries interfaces
Matrix of Agilent IO Libraries revisions 

You'll see that the device must meet the USBTMC or USBTMC-USB488 specs for VISA to talk to it.

If it doesn't meet one of these specs, than as Detlef mentions you'll need a dll or maybe an ActiveX or .NET object to talk to it from VEE.

The main exceptions to this that I know of are USB-Serial converters, the drivers for which make them look like serial ports and hide their USB-ness. Other VISA-compatible converters, such as the 82357A USB-GPIB, implement one of these specs, as far as I know, as do direct-connect USB instruments such as the 33220A.

Best Regards,


Scott Bayes
Software Technical Support

Agilent Technologies, Inc.
815 14th Street S.W.
Loveland, CO, U.S.A. 80537

970 679 3799 Tel
970 635 6867 Fax

> -----Original Message-----
> From: Baranski, Detlef [mailto:Detlef.Baranski@pilkington.de]
> Sent: Thursday, March 24, 2005 5:06 AM
> To: VRF
> Subject: AW: [vrf] usb PIC interface
>
> Barrie,
> the io-Instrument manager and the Vee built in USB
> functionallity belongs to
> VISA lib and USB-GPIO Card only.
> If you have a different device with no VISA support, you have
> to use the
> library (.dll) or selfwritten program to access it....
> INstrument manager did not help in that case!
>
>
> best regards,
> detlef
>
>
> -----Ursprngliche Nachricht-----
> Von: barrie birmingham [mailto:b.birmingham@newi.ac.uk]
> Gesendet: Donnerstag, 24. Mrz 2005 12:09
> An: VRF
> Betreff: [vrf] usb PIC interface
>
>
> Some help please with a first attempt at using the USB interface.
> I have a prototype device based on a PIC with built in USB
> port connected to
> a
> PC running XP pro and Vee7.
> When connecting the USB cable, windows recognises the device
> and it appears
> in device manager as a HID device. (is this right?)
> What's the next step to get Vee to access it?
> The 'Edit USB0' in 'I/O config' shows no devices, and in 'instrument
> manager'
> 'add instrument' the USB address fields are blank/greyed out.
>
> Barrie Birmingham
> b.birmingham@newi.ac.uk
>
>
> ---
> You are currently subscribed to vrf as: Detlef.Baranski@pilkington.de
> To subscribe send a blank email to "join-vrf@it.lists.it.agilent.com".
> To unsubscribe send a blank email to
> "leave-vrf@it.lists.it.agilent.com".
> To send messages to this mailing list,  email "vrf@agilent.com". 
> If you need help with the mailing list send a message to
> "owner-vrf@it.lists.it.agilent.com".
> This message and any attachments are confidential, for the
> exclusive use of
> the addressee and may be legally privileged. Any other
> distribution, use or
> reproduction is unauthorised and prohibited. If you have received this
> message in error, please notify the sender immediately and delete the
> message from your system.
>
> Visit our internet site at http://www.pilkington.com
>
> ---
> You are currently subscribed to vrf as: scott_bayes@agilent.com
> To subscribe send a blank email to "join-vrf@it.lists.it.agilent.com".
> To unsubscribe send a blank email to
> "leave-vrf@it.lists.it.agilent.com".
> To send messages to this mailing list,  email "vrf@agilent.com". 
> If you need help with the mailing list send a message to
> "owner-vrf@it.lists.it.agilent.com".
>

---
You are currently subscribed to vrf as: rsb@soco.agilent.com
To subscribe send a blank email to "join-vrf@it.lists.it.agilent.com".
To unsubscribe send a blank email to "leave-vrf@it.lists.it.agilent.com".
To send messages to this mailing list,  email "vrf@agilent.com". 
If you need help with the mailing list send a message to "owner-vrf@it.lists.it.agilent.com".

Outcomes