Full Suppression based on the Integral of the Signal
Once the event is acquired, the ”full Suppression based on the integral” (ZS_INT) compares the sum of all
samples of the event within the acquisi on window (i.e. the integral) with a programmable threshold. The
threshold can be defined through register 0x1n24
. It is also possible to define a logic of acquisi on
according to bit[31] of register 0x1n24. In case of posi ve logic, the condi on is met when the integral is
over threshold; in case of nega ve logic, the condi on is met when the data is under threshold.
If the event does not sa sfy the zero suppression condi on it is discarded, and its data is not available
among the read out data.
As in the example reported in
Fig. 7.5
, in case of 4 channels, if the integral of channel 0 and channel 2 are
over ZS_Threshold (T
INT
), the corresponding samples are wri en in the output data. Samples from channel
1 and channel 3 are not recorded.
Acquisition Window
Common Trigger
S
1
S
2
S
N
INT
N
i
T
S
1
CH0
Acquisition Window
S
1
S
2
S
N
INT
N
i
T
S
1
CH1
Acquisition Window
S
1
S
2
S
N
CH2
Acquisition Window
S
1
S
2
S
N
CH3
The event
is acquired
The event is
not acquired
INT
N
i
T
S
1
INT
N
i
T
S
1
The event
is acquired
The event is
not acquired
Common Trigger
Common Trigger
Common Trigger
OUTPUT DATA:
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
H
E
A
D
E
R
D
A
T
A
C
H
0
D
A
T
A
C
H
2
. . .
. . .
. . .
Channel
Mask
= 0x5
Fig. 7.5:
Zero Suppression based on the integral.
32
UM3247 - N6724 User Manual rev. 10
