AnsweredAssumed Answered

VISA buffer size for USB instruments

Question asked by gatekeepr69 on Jul 25, 2012
Latest reply on Aug 6, 2012 by changmeikuan
I am trying to transfer trace data from a USB device (Anritu VNA master) using a direct I/O statement and VISA gives an instant timeout error  because the VISA buffer size is too small.  Ethernet does not seem to have any issues.

for instance matlab uses the command visaObj.InputBufferSize = 100000 ... I cannot find any way to set this using the VEE configuration, Direct I/O or I/O libraries.

I  also noticed the simple communications tool in Agilent Connection Expert does not even allow for changing this setting therefore the command errors out there also.

Any help would be apprecited as more and more devices are coming with USB only and ethernet as an added option.

James Martin - Diamond Engineering