CAEN
Electronic Instrumentation
UM3148
–
DT5730/DT5725 User Manual rev. 2
38
Fig. 9.16
shows the trigger management in case the coincidences are enabled with Majority level = 1 and T
TVAW
= 0 (i.e.
1 clock cycle). In order to simplify the description, CH1 and CH3 channels are considered disabled, so that the relevant
trigger requests are the over-threshold signals from CH0 and CH1.
CH2 THRESHOLD
TRG_REQ [0]
TRG_REQ [1]
CH0(enabled) IN
CH0 THRESHOLD
TRIGGER
(Maj.lev = 1)
CH2(enabled) IN
ORed signal
T
TVAW
M
E
Z
Z
A
N
IN
E
M
O
T
H
E
R
B
O
A
R
D
Fig. 9.16
: Trigger request relationship with Majority level = 1 and T
TVAW
= 0
In this case, the common trigger is issued if at least two of the enabled trigger requests are instantaneously in
coincidence (no TTVAW is waited).
Note:
a practical example of making coincidences with the digitizer in the standard operating is detailed in
[RD11]
.