Difference: AMC13UserManual (37 vs. 38)

Revision 3817 Jan 2018 - EricHazen

Line: 1 to 1
THIS MANUAL IS INCOMPLETE but what is written here should be more accurate and up to date than the old "functional specification". Please e-mail me if you find mistakes/omissions here (Eric H).
Line: 269 to 269
 but values 0000-0005 are replaced by fixed values, so the first visible counter value is 0006.

Notes on generating high L1A rates (above 100kHz)

For LHC Phase 2 upgrade prototyping it is desirable to generate triggers up to around 750kHz. The AMC13 can do this but two settings must be changed from the defaults.

First, the fake data generator event size must be reduced. This can be accomplished with the following (setting the size to 0x10 allows triggers well above 750kHz if only one fake AMC is enabled).


Second, to get above about 670kHz the CMS trigger rules must be disabled:


(see section above for detailed documentation).

To get 800kHz fixed rate one can use:

> localL1A b 50

Or 800kHz random:

> localL1A r 800000

Finally, note that various commands in the AMC13Tool2 reset the CONF.LOCAL_TRIG.RULES to the default 0 so one must include the command to reset this in any script or software.


TTC History Capture

(See also AMC13Tool2 documentation on this topic.

This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2023 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback