DCL transmitted to GPIB-VXI/C

[danzimmer]

What happens to the VXI boards plugged into the VXI backplane when a GPIB-VXI/C (p/n 777126) receives DCL from the computer?  Do the VXI board reset, or does the GPIB-VXI/C ignore the DCL, or do the VXI boards ignore whatever is transmitted to them, or does something else happen?

Thanks!

[Simran_K · Accepted solution]

Hello,

The DCL message is a universal device clear message that is sent to all devices on the bus and resets them to their "power-on" conditions. For more information please refer to the following links:

GPIB - IEEE 488

ArtisanScientic (Page 19 and 33)

GPIB-VXI/C User Manual  (Pages 16 and 191)

Thank you,

[danzimmer]

Thank you, Simran!  The key is from the ArtisanScientic document, page 33.

"When the DCL command is received, the IEEE-488 interface device sends the VXIbus CLEAR command to all VXIbus instruments which are its direct servants."

I knew that DCL cleared IEEE-488 instruments, but I didn't know how to make the connection to clearing the VXI instruments.

Thank you very much.

Dan