RE: Measurement Computing USB-1608G_2AO support

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

Hi Yong,

 

The USB-1608G_2A0 accepts a TTL trigger.  It can thus be used as an inexpensive waveform digitizer using either the internal clock, or an external trigger to collect the next sample.  It can digitize a single input at 500 kHz, 2 channels at 250kHz, etc.

 

Mark

 

 

From: Hu, Yong <yhu at bnl.gov>
Sent: Thursday, October 21, 2021 4:43 PM
To: Mark Rivers <rivers at cars.uchicago.edu>; 'Dudley, David' <dudleyd at frib.msu.edu>
Cc: tech-talk at aps.anl.gov
Subject: Re: Measurement Computing USB-1608G_2AO support

 

Hi Mark, David, etc.:

 

Those modules seem amazing. Do you know any analog I/O modules accept external trigger, i.e. it has an TTL trigger input?

 

Thanks,

Yong

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>
Date: Monday, October 18, 2021 at 7:33 PM
To: 'Dudley, David' <dudleyd at frib.msu.edu>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: RE: Measurement Computing USB-1608G_2AO support

Hi David,

 

The high level EPICS software already exists in this file, which works on both Linux and Windows.

 

https://github.com/epics-modules/measComp/blob/master/measCompApp/src/drvMultiFunction.cpp

 

The low-level Linux driver for the USB-1608G-2A0, written by Warren Jasper, also already exists:

 

https://github.com/wjasper/Linux_Drivers/blob/master/USB/mcc-libusb/usb-1608G.c

 

All that needs to be done is to write the “glue layer”, which is the derived class mcBoard_USB-1608G.cpp, in this directory:

 

https://github.com/epics-modules/measComp/tree/master/measCompApp/cbw_linuxSrc

 

There are lots of examples, including the mcBoard_E-1608.cpp that can be used as a starting point.

 

Mark

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Dudley, David via Tech-talk
Sent: Monday, October 18, 2021 2:29 PM
To: tech-talk at aps.anl.gov
Subject: Measurement Computing USB-1608G_2AO support

 

Anyone implemented support for these device under Linux?  measComp module looked real promising until read that only certain modules are supported under Linux, and this one is not one of them.

 

Later-

 

David Dudley Controls Engineer III Facility for Rare Isotope Beams Michigan State University 640 South Shaw Lane East Lansing, MI 48824-1321, USA Tel. 517-908-7133 Email: dudleyd@frib.msu.edu