gpib bus hangs

[ESchell]

I originally posted this on the LV discussion.
Sorry for the duplication:

I am bringing up a LV app that runs an HP scanner on
a gpib bus. When reading 100 scanner channels, the
scanner quits on the 69th channel (consistently) on
the 2nd scan, and I get a gpib EDVR error. When I run
Ni-Spy with a large capture buffer (3000 lines), the
scanner keeps running for a much longer time,
suggesting perhaps that some delay is required.
By the way, I'm using an hp3852a driver I downloaded
from the ni site. Any ideas?

[ESchell]

Solution: the ibrda byte count was set too low, so
I guess the scanner was just filling up its buffer
and waiting for the pc to read it.