User`s guide

130 VEE User’s Manual
3 Easy Ways to Control Instruments Chapter
Figure 78 The HP54600A Scope Panel Driver
Direct I/O Object
VEE’s Direct I/O object allows you to communicate with any
instrument from any vendor over standard interfaces (whether
or not there is a driver available for the instrument). The Direct
I/O object works by transmitting commands to the instrument
and receiving data back from the instrument. Using Direct I/O
generally yields faster execution speeds. Choosing the best
method of instrument control will depend on driver availability,
the need for fast test development, and the performance
requirements. Figure 79 shows an example using Direct I/O
to control a function generator.
Figure 79 A Function Generator Direct I/O Object