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Bug #8133

Bus errors occur in a cycle following a cycle of the same type which is longer the normal

Added by Kevin Martin over 4 years ago.

Status:
New
Priority:
Normal
Assignee:
Start date:
03/20/2015
Due date:
% Done:

0%

Estimated time:
8.00 h
Duration:

Description

Bus errors occur in a cycle following a cycle of the same type which is longer the normal. The errors are big enough that they cause a Beam Abort. The errors mainly are seen in the Quad buses. The scenario is:

-The cycle is learned in with a normal ramp length without any major errors
-A longer cycle is encountered, increasing the length of the cycle correction buffer
-The next occurrence of that cycle the correction is misapplied to the start of the ramp
(some sort of index/time offset?)
-The subsequent events are at a normal, shorter, ramp length and occur correctly


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