Hello,
Here are the few suggestions that you can try.
-Verify that you are using the correct termination method for your instrument. Byte count (where you expect to receive a certain number of bytes in a message) is always used, but some instruments use EOS and byte count, some use EOI and byte count, and some use only byte count. Check your device's user manual for the possible termination methods to use with your instrument.
-If EOS is the termination method, then be sure to append the termination character to the end of your message. You can specify the termination character in the GPIB Configuration Utility, but the NI-488.2 driver will not automatically append it for you! Make sure that the termination character is not being added after the first character mak
ing the operation to abort after sending the first character.
-Lengthen the timeout period for I/O operations using the ibtmo command.
