Changes for page Trigger Howto

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11	11
12	12	* the triggers are for low impedance (~~50 Ohm )
13	13	* signal level is + 5V - otherwise 0V (in the expert panel one can also invert the signal - base line is +5 V and trigger 0V)
14		-* The trigger are send to the MTCA several ms before the first FEL pulse (3.1 ms for the "standard" trigger, 21.5 ms for the "early" trigger).
	14	+* The trigger are send to the MTCA several ms before the first FEL pulse (3.1 ms for the "standard" trigger, 23 ms for the "early" trigger).
15	15	* The timer card can delay the trigger in 9 ns  steps for more than 100 ms (an option to shift the trigger in 1 ns steps is available in the expert panel)
16	16	* The shown delay in µs is in respect to the //first// FEL pulse. negative delay: trigger comes before FEL, positive : trigger comes after the FEL.
17	17	* The desired delay has to be entered in the "delay to be set" field and as second step pressing the "set delay" sends the delay value to the timer card. Then the trigger delay will be changed and the "actual delay" will be updated.
...	...	@@ -31,14 +31,10 @@
31	31
32	32	\\
33	33
34		-Choosing a FLASH1 trigger there are 2 options to be synchronized with the BL and the PG shutter :
	34	+Choosing a FLASH1 trigger there are 2 options to be synchronized with the BL and the PG shutter :  [[image:attach:image2020-1-23_12-29-40.png||height="250"]]
35	35
36		- [[image:attach:image2020-1-23_12-29-40.png||height="250"]]
	36	+A yellow background indicates that the trigger is synchronized to a fast shutter:  [[image:attach:image2020-1-23_12-31-41.png||height="250"]] or:[[image:attach:image2020-1-23_12-32-20.png||height="250"]]
37	37
38		-A yellow background indicates that the trigger is synchronized to a fast shutter:
39		-
40		-[[image:attach:image2020-1-23_12-31-41.png||height="250"]] or:[[image:attach:image2020-1-23_12-32-20.png||height="250"]]
41		-
42	42	\\
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...	...	@@ -294,32 +294,10 @@
294	294
295	295	\\
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297		-= Info about the Fast shutter trigger =
298		-
299		-Since Jan 2020 the fast shutter trigger at FLASH1 is generated via local inhibit at the EXP1 and EXP2 crate and not via E0 and E1 events anymore
300		-
301		-for details see [[doc:FLASH.Fast Shutter trigger inhibit system]]
302		-
303	303	\\
304	304
305		-== Special trigger options for the fast shutter: ==
306		-
307		-=== Fast shutter inhibit signal ===
308		-
309		-It is possible to have the fast shutter inhibit signal (the signal coming from the fast shutter to the inhibit boxes connected to the X2 cards) directly available for users. For this one can select the output source as 2nd channel:
310		-
311		-[[image:attach:image2020-2-5_10-59-41.png||height="250"]]
312		-
313	313	\\
314	314
315		-=== Inverse fast shutter trigger ===
316		-
317		-If one wants to have an inverse fast shutter trigger (10 Hz signal that comes only if the fast shutter is** CLOSED**) one can use a T and a small Lemo cable to double the input from the fast shutter  to another input at the inhibit box.
318		-
319		-In the FL2 case input1 is the regular fast shutter channel and input2 is usually not used. for this additional input one can set the input configuration to **inverse:**
320		-
321		-[[image:attach:image2020-2-5_14-11-55.png||height="400"]]
322		-
323	323	\\
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