Peter Leung

One key difference, you cannot use the USB DAQ's clock as the Timing Source for a Timed Structure. Read 'LabVIEW Help', topic, 'Selecting a Timing Source for a Timed Structure', section 'External Timing Sources'.

QUOTE (dlbair55 @ Jan 27 2009, 11:35 AM) When you do a 'scan for instruments' from the master system, the 'slave' does not reply is normal. The GPIB card does not have any function for reply. Running MAX on the 'slave' won't work, because the MAX does not run any background VI to Read (similar to Listen in TCP/IP). You need to write your own VI with VISA Read without timeout and VISA Write back something. Very much same as working with COM port. For start, write a GPIB echo VI to echo everything from read to write, and run the VI on the slave to test the connection. FYI, the VISA resource used for the VI will be the 'master'.