Summary of Contents for Caen V895 Series
- Page 1 Technical Information Manual Revision n. 3 19 March 2009 MOD. V895 series 16 CHANNEL LEADING EDGE DISCRIMINATORS NPO: 00101/97:V895x.MUTx/03...
- Page 2 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. Disposal of the Product The product must never be dumped in the Municipal Waste.
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Page 3: Table Of Contents
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/2009 TABLE OF CONTENTS GENERAL DESCRIPTION ........................5 1.1........................5 UNCTIONAL DESCRIPTION 1.2............................7 LOCK DIAGRAM 1.3......................8 ECHNICAL SPECIFICATION TABLE TECHNICAL SPECIFICATIONS......................10 2.1.............................10 ACKAGING 2.2. - Page 4 Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 LIST OF FIGURES . 1.1: M )........................ 6 ODEL TYPE LABEL EXAMPLE . 1.2: B ............................7 LOCK IAGRAM . 2.1: M . V895 ........................
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Page 5: General Description
1.1. Functional description The CAEN Mod. V895 is a 16 CHANNEL LEADING EDGE DISCRIMINATOR housed in a single width VME module. The module accepts 16 negative inputs (positive on request) and produces 16 differential ECL outputs with a fan-out of two on two front panel header connectors (a functional block diagram is shown in Fig. -
Page 6: Fig . 1.1: Model Type Label ( Example )
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Table 1.1:Versions available for the Model V895 Version Number of PAUX connector channels V895 V895 B WV895XBAAAAA TYPE MAY 5th 2002 RIF N. DATE Fig. -
Page 7: Block Diagram
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 1.2. Block diagram DACs,TEST, INHIBIT W LOGIC ......test 8 bit 8 bit 8 bit 8 bit inhibit 8 bit ....ch.0 ch.1 ch14 ch.15 THRESHOLDS... -
Page 8: Technical Specification Table
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 1.3. Technical specification table Table 1.2: Technical specification table General Packaging 6U-high, 1U-wide VME unit Refer to § 2.2 Power requirements Threshold range -1 mV to -255 mV (-1 mV step) Input Signals Inputs Channels... - Page 9 Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Output Signals 16 ECL outputs with a fan-out of two Outputs 110 Ω Outputs Impedance Output Width 5±1 ns to 40±5 ns FWHM <3 ns Output Rise/Fall Time 15.5 ±...
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Page 10: Technical Specifications
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Technical Specifications 2.1. Packaging The Models V895 and V895 B are housed in a 6U-high 1U-wide VME unit. The Mod. V895 is provided with P1, P2 and PAUX connectors. The Mod. -
Page 11: Front Panel
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 2.3. Front panel Mod. V895 Σ 16 CH 16 CH Fig. 2.1: Mod. V895 front panel NPO: Filename: Number of pages: Page: 00101/97:V895x.MUTx/03 v895_rev3.doc... -
Page 12: External Connectors
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 2.4. External connectors The location of the connectors is shown in Fig. 2.1. Their function and electromechanical specifications are listed in the following subsections. 2.4.1. -
Page 13: Other Components
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Σ OUTPUT: Mechanical specifications: 1 LEMO 00 type connectors. Electrical specifications: current output (-1 mA ± 20% per hit), high impedance; 25 MHz maximum input frequency. MAJORITY OUTPUT: Mechanical specifications: 1 LEMO 00 type connectors. -
Page 14: Fig. 2.2: Components Location
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Base address bit <23 ... 20> Rotary switches for Base Address selection Base address bit <19 ... 16> Channels 8 to 14 Discrim inator Ch. -
Page 15: Fig. 2.3: Jumpers Location
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 VME P1 connector Internal External VME PAUX connector VME P2 connector Mode Jumpers Com ponents side Updating Non Updating Fig. 2.3: Jumpers location NPO: Filename: Number of pages:... -
Page 16: Characteristic Of The Signals
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 2.6. Characteristic of the signals INPUTS Channels: Negative polarity, 50 Ohm impedance; maximum input frequency: • 140 MHz (updating) • 80 MHz (non updating) DC coupling;... -
Page 17: Vme Interface
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 VME Interface 3.1. Addressing capability The V895 module works in A24/A32 mode. This implies that the module’s address must be specified in a field of 24 or 32 bits. The address modifiers codes recognized by the module are: AM = %39 Standard user data access... -
Page 18: Discriminator Thresholds
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 3.2. Discriminator thresholds (Base address + %00 to %1E write only) These registers contain the discriminator thresholds values on 8 bit words. The thresholds values can be programmed in a range from -1 mV to -255 mV with 1 mV steps, writing an integer number between 1 and 255 into the register;... -
Page 19: Test Pulse
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 3.7. Test pulse (Base address + %4C write only) A test pulse on all output channels can be generated by performing a write access at Base address + %4C;... -
Page 20: Operating Modes
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Operating Modes 4.1. Test, Veto and Or signals Some operations can be performed sending two external NIM signals: • TEST: an input signal sent through this connector triggers all the enabled channels at once. -
Page 21: Threshold Setting
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 4.3. Threshold setting Each V895 channel is provided with an 8 bit DAC to set the threshold. The threshold value can be programmed in a range from -1 mV to -255 mV with 1 mV steps (valid values: 1÷255). -
Page 22: Fig. 4.1: V895 Updating And Non-Updating Mode
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Event Event Event THRESHOLD INPUT SIGNAL time γ NON-UPDATING MODE OUTPUT UPDATING MODE OUTPUT 5÷40 ns (programmable) 7ns Double Pulse Resolution (updating) γ 12ns Double Pulse Resolution (non-updating) Fig. -
Page 23: Current Sum Signal
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 4.6. Current Sum signal The Current Sum (Σ) output connector provides a current proportional to the input signal multiplicity, i.e. to the number of channels over threshold, at a rate of -1.0 mA per hit (-50 mV per hit into a 50 Ohm load) ±20%. -
Page 24: Majority Setting
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 4.7. Majority setting Majority output provides a standard NIM signal if the number of channels over threshold exceeds the programmed majority level (MAJLEV). MAJLEV can be programmed between 1 and 16, writing a proper value (MAJTHR) in the Majority threshold register (see §... -
Page 25: Fig. 4.3: Example Of Three Daisy Chained V895
Document type: Title: Revision date: Revision: User's Manual (MUT) Mod. V895 16 Channel Leading Edge Discriminator 19/03/09 Maj. State = INT Maj. State = INT Maj. State = EXT Mod. V895 Mod. V895 Mod. V895 DT K DT K DT K M AJ M AJ M AJ...