Or he may mean channels within a device or module, such as channels
within an oscilloscope or multichannel digitizer. In such cases, the
method should be documented by the vendor of the device. There is no
generic method or streamDevice-specific method for performing such
selections.
A couple of things may be worth noting. In some cases, there is a
specific SCPI command that effectively says 'for all subsequent
commands, use channel n'. Where you are monitoring more than one channel
on a periodic schedule, you can put that command into a single
streamDevice protocol that may contain other commands that relate to
that specific channel. You would probably do so for a number of
protocols where you want to address specific channels. Moreover, a
single protocol may be contrived that will work for all channels, where
the channel number (or other identifier) is a macro variable (like \$1)
that is passed to the protocol. The channel identifier might also be a
PV such as an analog record or a multibit binary record, and this can be
referenced an decoded in the protocol.
If Sebastian has a different meaning for the question, he should
rephrase and expand on his intention.
--- rod.
On 05/22/2013 07:18 AM, Mark Rivers wrote:
I think he probably means the asyn "addr" field, used to select a specific address or channel of a device.
Mark
________________________________________
From: [email protected] [[email protected]] on behalf of Dirk Zimoch [[email protected]]
Sent: Wednesday, May 22, 2013 4:24 AM
To: [email protected]
Subject: Re: streamdevice
On 21.05.2013 18:45, Sebastian Matkovich wrote:
is it possible that you cannot access specific channels of a device
through streamdevice? or does somebody know how to do that?
What do you mean with "specific channels of a device"?
Dirk
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