problems with GPIB-command "IBONL"

[Stefan Lichtenberg]

Hi,

i downloaded the Language Interface 32bit Microsoft Visual Basic 5.0 and
tried the sample program "simple scope" (just puts the *IDN?" query and
displays the answer) with a HP signal-generator and a Lecroy-DSO. The
program set the devices online, was able to read and display the
instrument identity but it didn't turn the devices off. The command
"ilonl" (compareable/identical ibonl) is for use with the card and the
device. If you press "Quit" in the program the card must be turned off
though using the device-handle, because reading the identification isn't
possible any more (error message).

Does anyone have a solution for my problem?

Bye,

Stefan


[See first answer for additional information]

[Stefan Lichtenberg]

[Attachment(s) for question]