Experimental Physics and
Industrial Control System

Eric Snow <[email protected]> · Mon, 22 Jul 2002 10:05:34 -0400

Has anyone succeeded in getting external triggering to work with the IP330?
We are using the EPICS driver by Mark Rivers, which appears to support
it at least to the point of setting the control registers. The hardware
works in "Burst Continous", as the 5Vpp, .5Hz square wave signal hooked
up properly reads between 0V and 5V. When the same signal is applied to
the trigger input, the startup file configuration set to 5 for External
Triggering and the direction to "Input", the value read is somewhere
around -4.9xxxx. The value does change sometimes, but the time period
seems random.
The coax leads are hooked up to 1,2 for chanel D00, and the external
trigger is hooked up with + at 49 (ext trig) and - at 39 (common). The
hardware setup (leads and registers) seems to be right, so I think the
problem is somewhere in the EPICS side of things, which I am not very
familiar with. Currently it is using the Ip330Scan application, should
it be using something else?
Thanks,
--
Eric Snow
Accelerator Physics
Spallation Neutron Source
Oak Ridge National Lab
[email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System