WaveDump User Manual
Contents
1. CAEN WaveDump requires additional Libraries CAENComm library Library 21 64 KB Type tgz Le amp CAENVMELib amp demo Library amp Demo 412 16 KB Type tgz i CAENDigitizer library Linux Library 153 16 KB Type tgz bad G Fig 1 1 Additional CAEN libraries required by Wavedump to be installed apart in Linux environment Install the required libraries starting with CAENVMELib then CAENComn finally CAENDigitizer Now install WaveDump following the instructions in the INSTALL file Once installed the WaveDump folder generated on the host PC typically contains source files include files Windows project files Lib files for development for x86 and x64 executable files precompiled and custom developed see the README file UM2091 WaveDump User Manual 4 CAEN Nn Electronic Instrumentation 2 Board Connection CAEN digitizers can be connected to the host PC through the three following ways Direct Link to the Module via USB Desktop and NIM versions can be directly handled via USB just connecting the digitizer to the host PC via the USB cable the USB driver is available on Digitizer web page Direct Link to the Module via Optical Link Every CAEN digitizer can be controlled directly via Optical Link for this purpose a CAEN PCI or PCle controller Mod A2818 and A3818 is required See the web pages of A2818 A3818 for more info In this case the unit must be connected to the featured controller via the optical fibr2. ae ee eo ne nn en er er ee ere eee eee 11 WRITE REGISTER address data nisrsriires erini estiss si yitirir niak tie enee eT eesti ata tlle Di ab tina evant 11 PACH WMP SS LIS E E E E EN 11 ENABLE INPUT OptiOieerriniii nnna EEEN NERA NANE EE ARS 11 DERO nye cel oc E E N AE E E AEA E E E EA E A O E AE A EA E E E ee 11 GRP OH DO OFFSET de 0 do d 2 do 6 do A de 5 do 6 O0 Teerns 11 TRIGGER THRESHOLD Va Lue cccccccccceeccceeececcsseuseeseseuuecsssuuuessseeeesesssuuueeesssueseeseseuuseessuuuaeesesuuneesesenes 11 CHANNEL TRIGGER ret onsen sake tier nance escc avec arenes enehiond NANANA ENAN AN AEN 11 Se 1B aa WE ENABLE MASK Man erore Ten PnP Oe rr ne rene nore re 12 Individual Settings for x742 Fast Trigger Channels cccccccccccccsssssseceeeeceeesssesseeeeeeeeeeseesseeeeeeeessessaseeeeees 12 DO OFFSET 7a VS iccixisismevinsivendvavtaantitecesenanienesicieacerdeataeneseainndveuiniorsiousvtennnernaakeentomiehiomnnnaiwaiwaiomonemietelen 12 TRIGGER TARESHOLD scoala em AT EE EEEE EEE EEE E Ei 12 List of Figures Fig 1 1 Additional CAEN libraries required by Wavedump to be installed apart in Linux environment eeeeeeeeeeseeeee 4 Fig 3 1 CAEN WaveDump software architecture ccccccsssscccccescsssssseececesssessaneeeeccessesseneeecessssssaueeeeeeesseesaneeesessesssanneeesees 6 List of Tables Tab 1 host PC requirements sina santscnasexsconesensxentseravanesesvancdensacudce ea axaamuensusese rastiresenanteneiecaneum
3. responsibility is assumed for inaccuracies CAEN SpA reserves the right to modify its products specifications without giving any notice for up to date information please visit www caen it CAEN Nn Electronic Instrumentation Index Purpose of NS GUIE ges etesecssceescerz cine cess ccavcecnaivarseesactucssevdeostterna rae EE UE EEEo sen doasepaaeetninoeasikausacenunecnsieniadsercones 2 onang Docume OCON i aa E TE A E A E EE 2 Symbols abbreviated terms and NOTATION cccceeessssscceececeeeecceeeeeseeessessesseeeeeeeeeeeceeeeeeseeeeeeeaaaaaeaeeeeeeeeees 2 PA Ca DOCU EE E E EE E E EA AA E A E EE 2 OE a E A EE E E E E E 3 LIS ON OURS S an a aseg sete eee suc sien sete eee ese sen sooo cuee ese se cene sek ee Gece setae ona eee ce setae saaneeeees ce 3 EAST OR VAC Saa E sens tes caaaceoenasseuoao ess 3 MVOC CUO Pi aoresircecianereen cic ene capeccaecaae E EEEE EE IEEE ENE 4 System requirements amp installation SETUP ce ceeessccccecesesesssseeeeeeeeseeeeseeeeeeeseeeestseeeeeeeeeseesseeeeeeesseesaaes 4 2 Board CONNECTION ssccccccccsssssssssssscccccccssssssssessscceccccssssssesseececscccsssssesseeseeecccssssseseess 5 Direci LINK tothe Module via USB ieee nineteen teen Seen en et eee me ne ey anes eet ees eee en ener ae eee enn are eee eee ee eres 5 Direct Link to the Module via Optical LINK ccc ccccscssssssseeeeeeeeesesssseeeeeceseseesseeeeeeeseseeeaeeeeeeeeesessaaaeeeees 5 Le iT MGS EEL OULCI IN a VME BidgO sonia ac
4. CAEN Electronic Instrumentation Tools for Discovery O wnwovi_datiida beuttare VME software CDW a TT i bh hi alai i vine mn hua SEERE SRSEARSS 0 465 143 2247 21 UM2091 WaveDump User Manual Rev 6 07 June 2012 Purpose of this Guide This document is the WaveDump user s manual it contains informations for the installation the complete command list explained and the syntax of the configuration file Change Document Record Date Revision Changes 14 April 2011 a Revised all chapters new document format 01 March 2012 Revised 1 07 June 2012 06 Updated System requirements amp installation setup Symbols abbreviated terms and notation ADC Analog to Digital Converter DPP Digital Pulse Processing FFT Fast Fourier Transform FSR Full Scale Range SBC Single Board Computer Reference Document RD1 User Manual UM1935 CAENComm User amp Reference Manual RD2 Application Note AN2472 CONET1 to CONET2 migration RD3 Guide G2483 WaveDump QuickStart Guide CAEN S p A Via Vetraia 11 55049 Viareggio LU ITALY Tel 39 0584 388 398 Fax 39 0584 388 959 info caen it www caen it CAEN SpA 2012 Disclaimer No part of this manual may be reproduced in any form or by any means electronic mechanical recording or otherwise without the prior written permission of CAEN SpA The information contained herein has been carefully checked and is believed to be accurate however no
5. active group refers only to the plot in fact the plotter can handle only 8 track while the acquisition is always enabled on all groups Toggle from waveform plot to FFT plot Toggle from plot to plot histograms of waveform Displays the online help Tab 3 WaveDump on line commands Inside the Gnuplot window there are active bindkeys and functions associated to the mouse Function Autoscale to be x axis and y Enable Disable ruler Enable Disable grid Set the scale y at full scale for the specific digitizer scale x remains unchanged Return to previous zoom Tab 4 Gnuplot window commands Zoom Area right click on one corner of the area release the button left click on the opposite corner Click with the right button on the window bar in order to open a menu that allows to make the print copy the screen shot to the clipboard change colours etc UM2091 WaveDump User Manual 8 CAEN Nn Electronic Instrumentation 4 Sintax of the configuration file The configuration file is divided into two parts common settings indicated in the COMMON section and individual settings for individual channels or groups in the case of Mod x740 series indicated in the n section where n is the number of channel or group The common settings are the ones common to all the channels of the digitizer the individual settings are the ones related to a single channel of the digitizer Please note that some settings
6. cation Since WaveDump is capable of handling all types of digitizer some parts of the code may be redundant because they have to foresee various cases the user who wants to use a particular digitizer can remove all those pieces of code that are not of interest In case of digitizer with channels divided in groups series x740 to simplify the use of WaveDump you can only plot the 8 channels of one group although the acquisition and save the output file manages all channels simultaneously Beyond the readout plot and save of row data WaveDump presents also some simple examples of data analysis FFT and histogram starting from them the user can easily develop his own post processing algorithms WaveDump is written in C and does not use graphics internally so it is portable to any platform the code is compatible with Windows and Linux The configuration file by default WaveDumpConfig txt contains a list of parameters the installation directory includes a typical configuration file that contains all possible parameters preceded by some comments which briefly explains their use For more details see section 2 The user can edit the configuration file or create a GUI that allows to set the parameters through a control panel and then generates the configuration file As mentioned in order to plot the data WaveDump relies on an external program namely Gnuplot data for the plot are written to file while the plot commands are passed
7. e cable see the Ordering Options of the controller Link through a VME Bridge 4 VME Digitizer Boards can be controlled via VMEbus through a VME Bridge Two CAEN bridges are available V1718 VX1718 with USB interface requiring just a host V2718 VX2718 with Optical Link requiring Mod A3818 PC with a free USB port or A2818 controller Tab 2 CAEN Bridges Note If you want to use a VME bridge from another manufacturer or a SBC you have to provide a CAENComm like library Please refer to the Application Notes AN2472 RD2 UM2091 WaveDump User Manual CAEN Nn Electronic Instrumentation 3 WaveDump Overview WaveDump is a C console application that allows to manage data acquisition with all models of the CAEN digitizer family with Standard Firmware WaveDump allows to Open the connection with the digitizer through a physical channel USB Optical Link and VME Read and view information about the card model serial number FW revision etc Program the digitizer according to parameters written in a configuration file text file Start and stop the acquisition run on off Send on command software trigger single shot or continuous Read the event data and display the data throughput rate MB s and the trigger rate The readout can take place with or without the use of interrupts Perform some simple data analysis post processing such as the signal FFT and the histogram of the samples Save t
8. es how the channel self triggers generated on the threshold crossing are used The 8 self triggers one per channel or group are masked and then ORed in order to generate a common trigger NOTE channel self triggers are not available on x742 Model For this purpose you may use the TR inputs There are three options ACQUISITION ONLY the self trigger causes the acquisition of one event in all the channels of the board regardless the channel s that generated it ACQUISITION AND TRGOUT the same as before but in addition the common trigger is also propagated to the TRG OUT or GPO for the Desktop and NIM versions connector UM2091 WaveDump User Manual CAEN Nn Electronic Instrumentation DISABLED the self trigger of the relevant channel is ignored It establishes the function of one channel or group in the case of x740 in auto trigger If DISABLED the auto trigger of that channel is ignored if ACQUISITION ONLY is set the channel or group participates to auto triggered acquisition and as the channel or channel in the group crosses the programmed threshold upward or downward all channels are triggered and an event is stored in memory If ACQUISITION AND TRGOUT is set auto trigger logic in addition to generating the trigger for the acquisition produces an output pulse on the TRG OUT GPO in the case of Desktop and NIM of the card GROUP TRG ENABLE MASK mask Hexadecimal number ranging from 0 to FF This command is mean
9. from WaveDump to Gnuplot through a pipe All functions related to the plotting are contained in a source file separated from WaveDump the user can replace the calls to Gnuplot in order to use other tools Gnuplot version 4 2 is automatically copied to the proper working directory during the installation of WaveDump only for Windows installation Linux users have to install Gnuplot On line Commands Once started following the instructions in the Quick Start Guide RD3 WaveDump parses the configuration file if a formal error occurs it is displayed in the shell It is also possible that the parameters and commands are formally correct but some of them are not valid for that type of digitizer this is indicated when programming the digitizer by a warning message Although this may not affect the operation of WaveDump the command that caused the error shall be found and the wrong value corrected Once programmed the digitizer WaveDump waits for the start of the acquisition s key While acquisition is running WaveDump accepts some on line commands associated with particular keys They are Function Start Stop acquisition Quit WaveDump WaveDump restart this command allows you to reload the configuration file and restart with a new acquisition Sends a software trigger single shot this command is especially useful when the card has no data no trigger because it forces the acquisition of an event In analogy with the osci
10. he waveforms sequence of samples to ascii or binary output files the writing can be one shot or continuous recording of a sequence of events Plot using an external graphical tool gnuplot the acquired waveform or the FFT of the selected channels histogram WaveDump is based on CAENdigitizer and CAENcomm libraries the latter manages communications at a low level read write for all types of physical channel The following block diagram shows the structure of WaveDump with its libraries and file input and output Config File Plot Data File CAENdigitizer CAENcomm Output Data Files Fig 3 1 CAEN WaveDump software architecture UM2091 WaveDump User Manual 6 CAEN Nn Electronic Instrumentation It should be noted that in case of access to the digitizer via the VME bus the CAENcomm manages only CAEN VME bridges V1718 and V2718 if the user wishes to use a third part bridge or SBC it is necessary to provide a CAENcomm equivalent library wrapper in which the functions for the bus access are compatible with the used system For more details refer to the CAENComm manual RD1 The source code of WaveDump shows the sequence of steps to do in order to program the digitizer and manage the data acquisition WaveDump is a practical example of the use of CAENdigitizer library and the relevant functions therefore it represents the starting point for the user who needs to develop its own acquisition appli
11. ie aaa aabesaawasioss suunioneniranerasesnieraneetienaiate 4 WE 2 PE BC eS ianen RE EEEE va poe on ean diate denna Tanai A on tests E EAT 5 Tab 3 WaveDump on line COMMANGAS cccccccessssscecceccecseesneeeeeeeeeeeesseeeeeeeeeeeeeeeeeeeeseeesaeeeeeeseeeeaseeeeeeeseeeseeeeeeseeeenaeeeeeesenegs 8 Tab 4 Gnuplot window commandS sesisecsdesedenidecideyeleaededadeas Te edeside boleeed lt dedna boeetiewes eriantvsnnecaenaesiaddonasta se naeniaetasteceensastaadianeeiems 8 3 UM2091 WaveDump User Manual CAEN Nn Electronic Instrumentation 1 Introduction This document is the WaveDump user s manual it contains informations for the installation the complete command list explained and the syntax of the configuration file For a practical first use example refer to WaveDump QuickStart Guide WaveDump is a C based console application that can control any model of CAEN digitizer and it must be considered as a starting point in order to create an own acquisition software it is an example of the use of the CAENDigitizer library to control the data acquisition by CAEN digitizers To avoid any misunderstanding we remind you that WaveDump is a demo tool developed only for CAEN digitizers running standard firmware if your digitizer runs some DPP firmware e g DPP PHA DPP CI or DPP PSD you have to use the related DPP Control Software that you may download from CAEN website System requirements amp installation setup Os OS vers
12. ifted compared to the dynamics centered on zero i e from FSR 2 to FSR 2 where FSR is the full scale range for example 2 Vpp for x720 value ranges from 50 to 50 For x740 and x742 series the DC offset is the same for all channels in the group For x742 series the DC_OFFSET range is bigger than other see the next Setting DC_OFFSET to 50 the dynamics of the signal will be from FSR to 0 completely negative signal setting to 50 the dynamics ranges from 0 to FSR completely positive signal setting to 0 the signal is bipolar GRP_CH_DC_OFFSET dc 0 dc 1 dc 2 de 3 de 4 dc_5 do Oy Ce J This setting is only for x742 digitizers and it can be used to set different DC offset values for each channel in the group dc 0 dc_n values are floats that indicates in percent how much the input dynamics is shifted compared to the dynamics centered on zero i e from FSR to FSR where FSR is the full scale range value ranges from 50 to 50 Setting DC_OFFSET to 50 the dynamics of the signal will be from 3FSR 2 to FSR 2 maximum negative signal setting to 50 the dynamics ranges from FSR 2 to 3FSR 2 maximum positive signal setting to 0 the signal is bipolar TRIGGER_THRESHOLD value Set the trigger threshold in ADC counts for the generation of self trigger channel value can range from O to 2 Nbit 1 where Nbit is the number of bits of the ADC CHANNEL_TRIGGER option As for the EXTERNAL_TRIGGER this command decid
13. in the common section can be overwritten by the corresponding settings in the individual section The individual setting can be made also in the common settings in this case they are applied to all channels Note the special commands QON and QOFF allows to skip entire blocks of lines in fact the WaveDump command parser when reading the command OFF from the configuration file ignores all subsequent commands until it reads the command QON Common Settings OPEN LinkType LinkNumber NodeNumber BaseAddress Specifies the path of the physical channel to open communication with the digitizer LinkType Identifies the type of channel and can be USB or PCT USB is a direct connection from PC to digitizer Desktop models or NIM and the connection through V1718 and VME bus VME models PCI is a direct connection from PC A2818 PCI controller a digitizer through fiber optics all models and connection through V2718 and VME bus VME models LinkNumber The number of the connection Typically is O only one digitizer connection to the PC In case of more digitizers connected although WaveDump can handle only a digitizer it is necessary to specify which has to be accessed LinkNumber identifies which USB or A2818 is in use but unfortunately in advance it s unknown which LinkNumber corresponds to which USB port or PCI slot NodeNumber This parameter must be specified only when connected via optical link PCI and indicates the node in the dais
14. ingful only for the x740 series in other cases is ignored It allows to determine which channels in the group of 8 participate to the auto trigger With x740 series the auto trigger is actually the OR of the non masked channels in the group NOTE unused channels must be disabled as a channel above the threshold keeps the output of the OR always active and prevents other channels from generating the trigger Individual Settings for x742 Fast Trigger channels The settings explained in this section are only for x742 models where Fast Trigger channels TRO and TR1 are available NOTE remember that signal TRO is the Fast Trigger for groups O and 1 while signal TR1 is the Fast Trigger for groups 2 and 3 DC OFFSET value Where value is DAC setting that indicates the DC offset of the Fast Trigger channel value ranges from 0 to 65535 Setting DC_OFFSET to 0 the dynamics of the signal will be from FSR to O completely negative signal setting to 65535 the dynamics ranges from 0 to FSR completely positive signal TRIGGER_THRESHOLD value Where value is DAC setting that indicates the comparison level of the Fast Trigger channel value ranges from 0 to 695553 UM2091 WaveDump User Manual 12 CAEN Electronic Instrumentation Tools for Discovery CAEN SpA is acknowledged as the only company in the world providing a complete range of High Low Voltage Power Supply systems and Front End Data Acquisition modules which meet IEEE S
15. ion CAEN Library required Third party software required fy 2000 XP Vista 7 CAN DIBItizer A 32 and 64 bit CAENComm na Windows CAENVMELib CAENDigitizer l Gnuplot Line kernel Rel 2 4 2 6 CAENComm rel 1 0 or later nuplot Zand GA pI CAENVMELib CAEN libraries are locally installed by the WaveDump Installer Tab 1 host PC requirements 1 First of all be sure to have all the third party software listed in the Tab 1 installed then e goto WaveDump web page Home Products Firmware Software Software Tools Digitizer Tools CAEN WaveDump e Download the WaveDump software package related to your OS in the Download tab e Uncompress the downloaded package e For Windows users launch the WaveDump Setup executable file and follow the installer instructions L Note WaveDump for Windows OS is a standalone version which installs locally all the required libraries see Tab 1 and doesn t need them to be installed apart by the user e For Linux users before to install the CAENUpgrader the installation of the CAEN required libraries is needed Click on the red link above the CAENUpgrader package in order to download them Overview Documentation Download Related Products Required Products Description Release Date OS Version Environment Download A CAEN WaveDump 3 3 Mar 2012 Kernel 2 4 Kernel 2 6 E SW Package 192 9 KB Type tgz E 5 Release Notes 1 86 KB Type txt E B A
16. lloscope we could say that this command is the Force trigger button Enables disables the continuous generation of software trigger inside the acquisition loop the program sends a trigger reads the corresponding event and executes data analysis It is like the Auto trigger in oscilloscopes Plot the traces of channel for enabled for plotting which does not necessarily coincide with the n channels enabled for acquisition the plot is single shot 7 UM2091 WaveDump User Manual CAEN Nn Electronic Instrumentation Enable Disable the plot to continuous plot activated channels Save to disk a single event writing a file for each enabled channel named wave_n txt where n is the channel number Warning the files are overwritten each time Each file can be ASCII or binary and may contain a header or not depending on the settings assigned in the configuration file Enable Disable the continuous events saving to file As before it creates a file per channel the only difference is that the W option allows to write the file in append mode Attention the file size can grow very quickly Insert remove the channel n n 0 7 from the plot if such a channel is enabled in the case of Model x740 n refers to the channel within the currently active group e g if it s on group 2 channels 16 to 23 press 3 you insert remove the channel 19 Switch to the next group of 8 channels only in the Mod x740 series NOTE The
17. re replaced by an internal test pattern that is a triangular wave ranging from 0 to full scale ENABLE_DES MODE option Where option can be YES or NO This setting applies to series x731 and x751 and is ignored for others It enables Dual Edge Sampling mode that is the interleaving of two channels to double the sampling frequency of the digitizer i e 1GSps for x731 and 2GSps for x751 When DES_MODE is enabled only half of the channels will be enabled even for x731 and odd for x751 regardless the input enable setting in the configuration file EXTERNAL TRIGGER option This command decides how the External Trigger is used there are three options ACQUISITION ONLY the arrival of a trigger on the front panel causes the acquisition of one event in all the channels of the board ACQUISITION AND TRGOUT the same as before but in addition the external trigger is also propagated to the TRG OUT or GPO for the Desktop and NIM versions connector DISABLED the external trigger is ignored FAST TRIGGER option Where option can be DISABLED or ACQUISITION ONLY This setting is only for x742 digitizers When enabled the fast trigger inputs TRO TR1 are used for data acquisition FAST_TRIGGER_DIGITIZING option Where option can be YES or NO This setting is only for x742 digitizers If enabled the fast trigger signal is digitized and it is present in data readout as channel n 8 for each group MAX NUM EVENTS BLT Ne Indicates the ma
18. ta abana SEE EE E E EENS 5 3 WV AVOUT COVE csirisersisesiresirosdrnniron iuern Nn ENNEN EEEE EARR 6 Jae ELSE e EAEE A EE A AE A E AE E E EN 7 4 Sintax of the configuration file eeeeeeeeeseseseesssssssssssssssssssssssssssssssssssssssssssssssssssssssss 9 COON CIN aae TE E E E EE eee eee 9 OPEN tinkType LinkNumber NodeNumber PBaseAddresg eisereen EEEE 9 GNUPLOT_PATH aero iesesicsercse ese sccn case secre stescshansiescpiorscctn ditaed an unk ankuan dubs A DA nan ASLA stsoedshebsonivitebynsdaisbosdeevhed 9 OCP UT FILE RORMA TO DET iiini EAE E EAE E E EEA EEEE E 9 A Ne FLE RENDER G EI ieri aa TEA E EE A E EEA 9 REGOR D LENGAT TE riarann EREE EE nie AA E EAA EA 9 TE E AW We eye e E E E EEEE EA EAEE AORA aee eeeee eeee e 10 ENABCE DE MODE TETO can i eter rE AA ado pata EA ENE A A TENA A N A 10 EXTERNAL gL onl eee nae EO hee er ee er er ee ee eer ee ee eee ree 10 PAT MF Aa eh fo ee ata raat nen E E enc asain aecreq AE A 10 FAST TRIGGER_ DIGITIZING option ciccccceecccccccccccseseccccsececececceseeueeseeeceseeeueeeeecssseeueeeeessseeuueeeeeesseeeuueneeeesseeeanens 10 BOA NOUN EVENT BET Be espace eds dovetacs i E cunceneuaveeeies cena eats sesenmtagae maassanonienauiens 10 POST TRIOGER el ss saree sven soars entertained viens neice tenn dimond macarons 10 THGOER Te O CI Oo occ sce ciecreatecnesic E E EEEE vite a aac etttsstest would desde act eden etd ale sed ede onto 10 USE INTERRUPT Y IEO een em eo ee eee ee ee 10 FPO CE VECO T oo ig ee ener ee
19. tandards for Nuclear and Particle Physics Extensive Research and Development capabilities have allowed CAEN SpA to play an important long term role in this field Our activities have always been at the forefront of technology thanks to years of intensive collaborations with the most important Research Centres of the world Our products appeal to a wide range of customers including engineers scientists and technical professionals who all trust them to help achieve their goals faster and more effectively CAEN S p A CAEN GmbH CAEN Technologies Inc Via Vetraia 11 Klingenstra e 108 1140 Bay Street Suite 2 C 55049 Viareggio D 42651 Solingen Staten Island NY 10305 ltaly Germany USA Tel 39 0584 388 398 Phone 49 0 212 254 4077 Tel 1 718 981 0401 Fax 39 0584 388 959 Fax 49 0 212 25 44079 Fax 1 718 556 9185 info caen it Mobile 49 0 151 16 548 484 info caentechnologies com www caen it info caen de com www caentechnologies com www caen de com CAEN Electronic Instrumentation Tools for Discovery Guide GD2091 WaveDump User Manual rev 6 07 June 2012 00117 10 DGT11 MUTX Copyright CAEN SpA All rights reserved Information in this publication supersedes all earlier versions Specifications subject to change without notice 13 UM2091 WaveDump User Manual
20. vel on the VME bus the time out etc that are permanently assigned by some define in the C source code users can change these parameters according to their needs NOTE interrupts can not be used to read via USB UM2091 WaveDump User Manual 10 CAEN Nn Electronic Instrumentation FPIO_LEVEL option Where option can be TTL or NIM It indicates the electrical level for the front panel LEMO I Os TRG_IN TRG_OUT and S_IN for VME TRG_IN GPI and GPO for Desktop and NIM WRITE_REGISTER address data Where address is the address offset of the register 16 bit hex and data is the value being written 31 bit hex This command allows the user to have a direct write access to the registers of the board NOTE all the direct write accesses are executed before the other settings thus it might happen that one specific setting overwrites the register content Individual Settings 11 ENABLE_INPUT option Where option can be YES or NO This command enables or disables a channel for the acquisition NOTE for the series x740 and x742 this setting refers to the group of 8 channels all channels belonging to the group are enabled disabled at the same time NOTE WaveDump depending on the type of digitizer and DES MODE channel interleaving setting automatically disables the channels that are not present regardless of this setting DC OFFSET value Where value is a float that indicates in percent how much the input dynamics is sh
21. ximum number of events that can be transferred in a block transfer It ranges from 1 to 1023 High values of the parameter correspond to high readout bandwidth but require more memory allocated for the block transfer POST TRIGGER value Where value is a number ranging from 0 to 100 it indicates the size of the post trigger in percent of the record length On models x742 there is a delay of about 35ns on signal Fast Trigger TR the post trigger is added to this delay TRIGGER_EDGE option Where option can be RISING or FALLING It determines whether the channel auto trigger is asserted on the rising edge or falling edge NOTE This setting must be COMMON to all channels USE_INTERRUPT value This option decides if the readout is done in polling mode or using the interrupts If value 0 interrupts are disabled polling mode In this case WaveDump continuously reads the digitizer to know if there are data If value N with N gt OandN lt 1024 the reading process enters a passive wait status until it receives an interrupt from the digitizer from VME or optical link or the timeout is reached The arrival of the interrupt request indicates the presence of at least N events in memory When the process is awakened by the interrupt it reads a block of data although not necessary it is logical to set the parameters INTERRUPT and BLT NUM BLOCK at the same value There are other related parameters such as Rora or Roak release mode the interrupt le
22. y chain Typically is O only one digitizer in the optical chain it may be different if more than one digitizer or V2718 is connected in a daisy chain Pacehodress Indicates the Base Address 32 bit hexadecimal number to access the digitizer via the VME bus This number should be O for the direct connections from PC to digitizer GNUPLOT PATH path Path to Gnuplot executable file for Windows installation it is normally because gnuplot is copied into the working directory OUTPUT _FILE_FORMAT option Binary or ASCII Indicates the type of output file In case of binary file each sample takes one byte for x721 and x731 series and one short 2 bytes for all other models OUTPUT FILE HEADER option Where option can be YES or NO It determines whether the output file must contain a header or not for each event RECORD_LENGHT Ns Indicates the number Ns of samples to be acquired for each trigger acquisition window Note Due to the constraints due to the granularity of this setting it is possible that the actual number of samples is approximated to a value slightly different from that set The maximum value of Ns depends on the memory size that varies from model to model see specifications for x742 family the options available are only 1024 520 256 and136 9 UM2091 WaveDump User Manual CAEN Nn Electronic Instrumentation TEST_PATTERN option Where option can be YES or NO If enabled the data from ADC a
Download Pdf Manuals
Related Search