GPIB command for acquire simultaneous 2 scope channels?

[pdalet]

I am a new GPIB programmer, and I want to acquire 2 signals simultaneous from a HP54111D oscilloscope (HP) via a gpib bus.
I can acquire a channel and after the other. do you
know the gpib command to acquire 2 channels simultaneous and transfer data ?

[Sissa]

Hello,

If you uses LabVIEW or LabWindows/CVI IDEs the best way to control your instrument is to use the instrument drivers provided on our site:
http://search.ni.com/query.html?lk=1&col=alldocs&nh=500&rf=3&ql=&pw=595&qp=%2BContentType%3AInstrumentDriver&qt=HP+54111&layout=IDNet

If for some reason you must use GPIB commands the best for you is to request from HP the set of commands for your scope.
I assume that you have some commands for configuration of your scope then you can enable ch1 and ch 2. then when you acquire data your scope will probablely fill a memory buffer (record) with your signals data. so i think that there is only one function for one channel and two channel. When using two channel tha data will probably be interleaved in your record i
.e (ch1[0],ch2[0],...ch1[n],ch2[n]) .
Hopes this helps

Regards

Salissou ISSA
Applications Engineer
NI France

[Kerouac]

Hello,

Basically, the set of commands available for an instrument is povided in the user manual of the instrument. Commands and syntax to use is normally described in the user manual of HP instruments.

Regards.

Matthieu Gourssies
Applications Engineer
NI France

[pdalet]

I've seen on a VI (HP54111D.vi) this command
DIG CHAN 1,2

I knew the command DIG CH 1 (see Instruction manual)
but not this.

Do you know this command ? DIG CHAN 1,2

Ph DALET
France

[Kerouac]

Hi,

We cannot have in mind the all set of commands for all of the HP instruments. This is not a NI oriented support request, and we cannot help you anymore.
I advice you to ask support from HP. They certainly know better the HP54111D scope and the set of SCPI commands to control it.

Regards.

Matthieu Gourssies
National Instruments France.