Changes for page Trigger Howto

Last modified by sndueste on 2023/07/07 11:28
From version 9.1
edited by sndueste
on 2019/09/17 14:22
Change comment: There is no comment for this version
To version 7.1
edited by sndueste
on 2019/09/17 13:44
Change comment: There is no comment for this version

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... ... @@ -148,18 +148,10 @@
148 148  
149 149  Once a clock is configured with the right frequency one can choose in the "expert panel" of the according channel the "FPGA clock" in the "input source select"  chooser.
150 150  
151 -One has to set the
152 -
153 -[[image:attach:image2019-9-17_14-22-29.png||width="450"]]
154 -
155 155  \\
156 156  
157 -This results in a continuous train of pulses with the set trigger width
158 -
159 159  \\
160 160  
161 -\\
162 -
163 163  * in order to generate a stable frequency one has to set the input source to FPGA clock (and use dividers to get the desired frequency)
164 164  * to generate the burst patterns of the FEL one has to choose a trigger event (best 116 for FLASH 2 and 16 for FLASH1) and activate Destination 1 for FLASH1 and Destination 2 for FLASH2 . finally one has to assign the activated Bunch pattern mask to the trigger channel of choice . now the pattern can be shifted and the trigger width can be changed as with the 10 Hz triggers. **IMPORTANT: to move the bunchtrain to the desired starting point the DELAY in the expert panel (see below) has to be used. The Trigger in the user panel (see above) has to be set to 0 !!!**
165 165  [[~[~[image:url:http://hasfweb.desy.de/pub/Setup/TriggerHowto/mtcatrigger2k.png~|~|alt="mtcatrigger2k.png" width="607" height="458"~]~]>>attach:mtcatrigger2k.png]]
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169 169  \\
170 170  
171 171  [[here is a link to the old VME trigger system>>doc:FLASH.VMETrigger]]
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