CAEN V1720 rev22

Document type:

User's Manual (MUT)

3.3.3.3.

Title:

Mod. V1720 8 Channel 12bit - 250MS/s Digitizer

Event format examples

Revision date:

22/04/2013

Revision:

22

The event format is shown in the following figure (case of 8 channels enabled, with Zero

Length Encoding disabled and enabled respectively; see § 3.3.3.1 and § 3.4.1.2):

An event is structured as follows:

 identifier (Trigger Time Tag, Event Counter)

 samples caught in the acquisition windows

The event can be stored in the board memories (and can be readout via VME) in two ways: data format is 32 bit long word, and each long_word may contain 2 samples

(Standard mode) or “two and a half” (Pack2.5 mode), depending on Channel

Configuration register setting.

The event formats are described in Fig. 3.5, Fig. 3.6, Fig. 3.7 and Fig. 3.8:

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

1 0 1 0 EVENT SIZE reserved

0 0

0 0

0 0

0 0

SAMPLE [1] – CH[0]

SAMPLE [3] – CH[0]

EVENT COUNTER

TRIGGER TIME TAG

0 0

0 0

0 0

0 0

SAMPLE [0] – CH[0]

SAMPLE [2] – CH[0]

0 0

0 0

0 0

0 0

0 0

0 0

SAMPLE [N-1] – CH[0]

SAMPLE [1] – CH[1]

SAMPLE [3] – CH[1]

0 0 0 0 SAMPLE [N-1] – CH[1]

0 0

0 0

0 0

0 0

0 0

0 0

SAMPLE [N-2 ] – CH [0]

SAMPLE [0] – CH[1]

SAMPLE [2] – CH[1]

0 0 0 0 SAMPLE [N-2 ] – CH [1]

0 0

0 0

0 0

0 0

SAMPLE [1] – CH[7]

SAMPLE [3] – CH[7]

0 0

0 0

0 0

0 0

SAMPLE [0] – CH[7]

SAMPLE [2] – CH[7]

0 0 0 0

SAMPLE [N-1] – CH[7]

0 0 0 0

SAMPLE [N-2 ] – CH [7]

Fig. 3.5: Event Organization (standard mode), normal format

NPO:

00103/05:V1720x.MUTx/22

Filename:

V1720_REV22

Number of pages: Page:

61 27

Document type:

User's Manual (MUT)

Title:

Mod. V1720 8 Channel 12bit - 250MS/s Digitizer

Revision date:

22/04/2013

Revision:

22

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

1 0 1 0

0 0

0 0 reserved

S [2] – CH[0] L

S [4] – CH[0] H

EVENT SIZE

CHANNEL MASK

EVENT COUNTER

TRIGGER TIME TAG

S [1] – CH[0] H

S [4] – CH[0] L

S [1] – CH[0] L

S [3] – CH[0] H

S [0] – CH[0] H

S [3] – CH[0] L

S [0] – CH[0] L

S [2] – CH[0] H

0 0

0 0

0 0

S[ N ] – CH[0] H

S [2] – CH[1] L

S [4] – CH[1] H

S[ N ] – CH[0] L

S [1] – CH[1] H

S [4] – CH[1] L

S[ N-1 ] – CH[0] H

S [1] – CH[1] L

S [3] – CH[1] H

S[ N-1

] – CH[0]

L

S [0] – CH[1] H

S [3] – CH[1] L

S[ N-2

] – CH[0]

H

S [0] – CH[1] L

S [2] – CH[1] H

0 0

S[

N

] – CH[1] H

S[

N

] – CH[1] L S[

N-1

] – CH[1] H

S[

N-1

] – CH[1]

L

S[

N-2

] – CH[1]

H

0 0

0 0

S [2] – CH[7] L

S [4] – CH[7] H

S [1] – CH[7] H

S [4] – CH[7] L

S [1] – CH[7] L

S [3] – CH[7] H

S [0] – CH[7] H

S [3] – CH[7] L

S [0] – CH[7] L

S [2] – CH[7] H

0 0

S[ N ] – CH[7] H

S[ N ] – CH[7] L S[ N-1 ] – CH[7] H S[

N-1

] – CH[7]

L

S[

N-2

] – CH[7]

H

Fig. 3.6:Event Organization (Pack2.5 mode), normal format

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

1 0 1 0

BOARD-ID reserved

Res.

0 0 0 0 SAMPLE

1

[1] – CH[0]

PATTERN

EVENT SIZE

EVENT COUNTER

TRIGGER TIME TAG

SIZE

CONTROL WORD

0 0 0 0 SAMPLE

CHANNEL MASK

[0] – CH[0]

0 0

0 0

SAMPLE [N-1] – CH[0]

0 0

0 0

SAMPLE [1] – CH[1]

0 0

0 0 SAMPLE [N-1] – CH[1]

CONTROL WORD

0 0

SIZE

CONTROL WORD

0 0

0 0

SAMPLE [N-2] – CH [0]

SAMPLE [0] – CH[1]

CONTROL WORD

0 0 0 0

SAMPLE [N-2] – CH [1]

0 0

0 0 SAMPLE [1] – CH[7]

SIZE

CONTROL WORD

0 0

0 0 SAMPLE [0] – CH[7]

0 0 0 0

SAMPLE [N-1] – CH[7]

CONTROL WORD

0 0 0 0 SAMPLE [N-2] – CH [7]

Fig. 3.7: Event Organization (standard mode), Zero Length Encoding

NPO:

00103/05:V1720x.MUTx/22

Filename:

V1720_REV22

Number of pages: Page:

61 28

Document type:

User's Manual (MUT)

Title:

Mod. V1720 8 Channel 12bit - 250MS/s Digitizer

Revision date:

22/04/2013

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

Revision:

22

4 3 2 1 0

1 0 1

BOARD ID

0

RESERVED

RES.

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

S(2) - CH(0) L

S(4) - CH(0) H

S(N-2) - CH(0) L

S(N) - CH(0) H

S(2) - CH(1) L

S(4) - CH(1) H

S(N-2) - CH(1) L

S(N) - CH(1) H

S(1) - CH(0) H

S(4) - CH(0) L

S(N-3) - CH(0) H

S(N) - CH(0) L

S(1) - CH(1) H

S(4) - CH(1) L

S(N-3) - CH(1) H

S(N) - CH(1) L

EVENT SIZE

PATTERN

EVENT COUNTER

TRIGGER TIME TAG

SIZE

CONTROL WORD

S(1) - CH(0) L

S(3) - CH(0) H

…..

CONTROL WORD

S(N-3) - CH(0) L

S(N-1) - CH(0) H

SIZE

CONTROL WORD

S(1) - CH(1) L

S(3) - CH(1) H

…..

CONTROL WORD

S(N-3) - CH(1) L

S(N-1) - CH(1) H

…..

S(0) - CH(0) H

S(3) - CH(0) L

S(N-4) - CH(0) H

S(N-1) - CH(0) L

S(0) - CH(1) H

S(3) - CH(1) L

S(N-4) - CH(1) H

S(N-1) - CH(1) L

CHANNEL MASK

S(0) - CH(0) L

S(2) - CH(0) H

S(N-4) - CH(0) L

S(N-2) - CH(0) H

S(0) - CH(1) L

S(2) - CH(1) H

S(N-4) - CH(1) L

S(N-2) - CH(1) H

0

0

0

0

0

0

0

0

S(2) - CH(7) L

S(4) - CH(7) H

S(N-2) - CH(7) L

S(N) - CH(7) H

S(1) - CH(7) H

S(4) - CH(7) L

S(N-3) - CH(7) H

S(N) - CH(7) L

SIZE

CONTROL WORD

S(1) - CH(7) L

S(3) - CH(7) H

…..

CONTROL WORD

S(N-3) - CH(7) L

S(N-1) - CH(7) H

S(0) - CH(7) H

S(3) - CH(7) L

S(N-4) - CH(7) H

S(N-1) - CH(7) L

Fig. 3.8: Event Organization (Pack2.5 mode), Zero Length Encoding

S(0) - CH(7) L

S(2) - CH(7) H

S(N-4) - CH(7) L

S(N-2) - CH(7) H

NPO:

00103/05:V1720x.MUTx/22

Filename:

V1720_REV22

Number of pages: Page:

61 29