Caen V560 Series Technical document

Technical
Information
Manual
MOD. V560 series
27 September 2002
Revision n. 1
16 CHANNEL
SCALERS

CAEN will repair or replace any product within the guarantee period if the Guarantor declares that the
product is defective due to workmanship or materials and has not been caused by mishandling,
negligence on behalf of the User, accident or any abnormal conditions or operations.
CAEN declines all responsibility for damages or injuries
caused by an improper use of the Modules due to
negligence on behalf of the User. It is strongly
recommended to read thoroughly the CAEN User's Manual
before any kind of operation.
CAEN reserves the right to change partially or entirely the contents of this Manual at any time and
without giving any notice.

27/09/2002 V560 User Manual
3
TABLE OF CONTENTS
TABLE OF CONTENTS...............................................................................................3
1. DESCRIPTION...............................................................................................................4
1.1. FUNCTIONAL DESCRIPTION..........................................................................4
2. SPECIFICATIONS..........................................................................................................6
2.1. PACKAGING .....................................................................................................6
2.2. EXTERNAL COMPONENTS.............................................................................6
2.3. INTERNAL COMPONENTS..............................................................................7
2.4. POWER REQUIREMENTS...............................................................................7
2.5. CHARACTERISTICS OF THE SIGNALS..........................................................7
3. OPERATING MODES....................................................................................................10
3.1. COUNTING SCALES........................................................................................10
3.2. INTERRUPT GENERATION.............................................................................11
3.3. FRONT PANEL SIGNALS.................................................................................12
3.4. SCALE INHIBIT.................................................................................................13
3.5. SCALE CLEAR..................................................................................................13
3.6. CHANNELS TEST.............................................................................................13
3.7. MODULE CONFIGURATION............................................................................14
3.8. V560 POWER SELECTION..............................................................................14
4. VME INTERFACE...........................................................................................................16
4.1. ADDRESSING CAPABILITY.............................................................................16
4.2. DATA TRANSFER CAPABILITY.......................................................................16
4.3. MODULE IDENTIFIER WORDS.......................................................................19
4.4. SCALE STATUS REGISTER............................................................................19
4.5. SCALE INCREMENT ........................................................................................20
4.6. VETO SET/RESET............................................................................................20
4.7. CLEAR SCALES ...............................................................................................20
4.8. COUNTERS ......................................................................................................21
4.9. REQUEST REGISTER......................................................................................22
4.10. CLEAR VME INTERRUPT................................................................................22
4.11. ENABLE/DISABLE VME INTERRUPT..............................................................22
4.12. INTERRUPT LEVEL & VETO REGISTER........................................................23
4.13. INTERRUPT VECTOR REGISTER ..................................................................23
5. MOD. V560 INTERRUPTER..........................................................................................24
5.1. INTERRUPTER CAPABILITY...........................................................................24
5.2. INTERRUPT LEVEL..........................................................................................24
5.3. INTERRUPT STATUS/ID..................................................................................24
5.4. INTERRUPT REQUEST RELEASE..................................................................24
5.5. ENABLE/DISABLE INTERRUPT GENERATION .............................................24
5.6. INTERRUPT SEQUENCE.................................................................................24
6. REFERENCES...............................................................................................................26

27/09/2002 V560 User Manual
4
1. DESCRIPTION
1.1.FUNCTIONAL DESCRIPTION
The model V560 is a 1-unit wide VME module provided with 16 independent 32-bit counting channels
operating at the guaranteed input frequency of 100 MHz.
The channels are grouped in 8 section of two channels; for each section it is possible:
•to enable/disable the channels interrupt generation;
•to connect (via internal changeover switches) the two channels to obtain a single 64 bit
scale.
The module houses a VME RORA INTERRUPTER[1] that generates a VME interrupt (if enabled)
whenever the most significant bit of a scale becomes true
The module operation is fully controlled through VME. Some operations can be also performed by
three external NIM signals (indicated on the front panel connectors with "VETO", "CLEAR", "TEST"):
•VETO: (INHIBIT) an input signal sent through this connector disables the counting.
•CLEAR: (FAST CLEAR) an input signal present on this connector resets all the channels
(it is possible to perform the same operation by pressing the "MAN CLR" push-button
located on the front panel).
•TEST: if the module is configured with 16 independent channels, a pulse sent through this
connector increases all the channels.
These inputs are high impedance and each one is provided with two bridge connectors for daisy
chaining.
The module V560 is an A24/A32 D16/D32 VME slave; its Base address is fixed by 6 internal rotary
switches. A front panel LED (DTACK) lights up each time the module generates the VME signal
DTACK.
The Model uses the P1 and P2 connector of VME and optionally the auxiliary connector for the
CERN V430[2] VMEbus crate (Jaux Dataway).

27/09/2002 V560 User Manual
5
MAN CLR
CLEAR
VETO
TEST
COUNTER 2n
clock
inhibit
clear
COUNTER 2n+1
clock
inhibit
clear
IDENTIFIER
INPUT 2n+1
INPUT 2n
MSB
MSB
OE
OE
VME
INTERFACE
SCALE STATUS
REQUEST REG.
Sn
Enable n
INTERRUPTER IRQ
Req n
INT. LEVEL
STATUS /ID
Enable
to other sections
SECTION n
Clear scales
VME VETO
Increase scales
rd counter 2n
rd counter 2n+1
Fig. 1.1: Mod. V560 block diagram

27/09/2002 V560 User Manual
6
2. SPECIFICATIONS
2.1.PACKAGING
1-unit wide VME unit. Height: 6U.
2.2.EXTERNAL COMPONENTS
CONNECTORS
- No.2, "IN 0..7", "IN 8..15", 16 pin lead flat cable connector, 110Ωimpedance; for the 16 input
channels.
- No.2, "TEST", LEMO 00 type, 50Ωimpedance; two bridge connectors (for daisy chaining) for the
TEST input signal.
- No.2, "CLEAR", LEMO 00 type, 50Ωimpedance; two bridge connectors (for daisy chaining) for the
CLEAR input signal .
- No.2, "VETO", LEMO 00 type, 50Ωimpedance; two bridge connectors (for daisy chaining) for the
VETO input signal.
LEDs
- No.1, "DTACK", green, VME Selected; it lights up during a VME access.
SWITCHES
- No.1, "MAN CLR", manual clear push-button; by pushing this button:
•all the counting scales are cleared;
•the VME interrupt request (if asserted) is removed;
•the VME interrupt generation are disabled;
•the VME VETO is cleared.

27/09/2002 V560 User Manual
7
2.3.INTERNAL COMPONENTS
(refer to fig.2.2 and Appendix C - components location)
JUMPERS
- No.1, jumper "JP2"; for the -5 V power selection.
SWITCHES
- No.8, changeover switches (group "JP3..JP10"). For connect the two channels of each section to
obtain a single 64 bit scale.
- No.6, rotary switches for the module VME Base address selection.
2.4.POWER REQUIREMENTS
Crate Type + 5 V - 12 V - 5 V
Standard 2 A 160 mA ==
Type V430 2 A == 160 mA
2.5.CHARACTERISTICS OF THE SIGNALS
- INPUT CHANNELS: std. differential ECL level, 110 Ωimpedance;
max. frequency:100 MHz; min. width 5 ns;
min. time interval between two pulses: 5 ns.
- VETO(*): std. NIM level, high impedance;
min. width 50 ns;
it must precede the input channel signal by at least 35ns.
- CLEAR(*): std. NIM level, high impedance; min. width: 60 ns.
- TEST(*): std. NIM level, high impedance; max. frequency: 50 MHz;
min. width: 10 ns.
(*) These inputs are high impedance and each one is provided with two bridge connectors for daisy chaining. Note that
the high impedance makes these inputs sensitive to noise, so the chains have to be terminated on 50 Ωon the last
module; the same is needed also if one module only is used, whose inputs have thus to be properly matched.

27/09/2002 V560 User Manual
8
SCALER
16 CH
Mod. V560E
TEST input
VETO input
Inputs 8..15
Inputs 0..7
CLEAR input
Manual Clear
pushbutton
VME selected LED
SCALER
16 CH
Mod. V560E
IN
8
1
5
- +
E
A
R
L
C
T
0
E
V
S
T
E
T
A
C
T
D
K
MAN
CLR
IN
0
7
- +
Fig. 2.1: Mod. V560 Front panel

27/09/2002 V560 User Manual
9
Component side of the board
for Base address selection
Rotary switches
POWER SELECTION
JP2
JP8:sect. 7
JP10:sect. 6
JP9:sect. 5
JP7:sect. 4
JP4:sect. 3
JP6:sect. 2
JP5:sect. 1
JP3:sect. 0
VME P1 connector
VME P2 connector
Paux connector
for CERN VMEbus
crate type V430
Fig. 2.2: Mod. V560 components locations

27/09/2002 V560 User Manual
10
3. OPERATING MODES
3.1.COUNTING SCALES
The module V560 houses 16 independent 32-bit channels that are grouped in 8 sections of two
channels. For each section the two channels can be cascaded by internal changeover switches in
order to obtain a single 64-bit scale.
The picture on the following page shows the changeover switches' location and position for the
different operating modes.
For each section, the corresponding changeover switch allows the connection of the even channel to
the following one, or to the corresponding input:
If the section n is configured as two 32-bit scales:
•the clock of the channel 2n is the external input 2n;
•the clock of the channel 2n+1 is the external input 2n+1.
If the section n is configured as a single 64-bit scales,
•the clock of the channel 2n is the 32th bit of the channel 2n+1;
•the clock of the channel 2n+1 is the external input 2n +1.
The 64-bit scale obtained has the following characteristics:
•the clock input of the 64-bit scale is the external input 2n +1
•LSB of the scale value = channel 2n+1 counting value
•MSB of the scale value = channel 2n counting value
It is possible to read the status of the changeover switches via VME (see § 4.4). The table 3.1
summarizes the characteristics of the eight 64-bit scales: