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MC.31xx
fast 12 bit transient recorder,
A/D converter board
for CompactPCI bus
Hardware Manual
Software Driver Manual
English version
April 27, 2006
SPECTRUM SYSTEMENTWICKLUNG MICROELECTRONIC GMBH · AHRENSFELDER WEG 13-17 · 22927 GROSSHANSDORF · GERMANY
PHONE: +49 (0)4102-6956-0 · FAX: +49 (0)4102-6956-66 · E-MAIL: info@spec.de · INTERNET: http://www.spectrum-instrumentation.com
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Table of Contents
Related Manuals for Spectrum Brands MC.31xx
Summary of Contents for Spectrum Brands MC.31xx
- Page 1 MC.31xx fast 12 bit transient recorder, A/D converter board for CompactPCI bus Hardware Manual Software Driver Manual English version April 27, 2006 SPECTRUM SYSTEMENTWICKLUNG MICROELECTRONIC GMBH · AHRENSFELDER WEG 13-17 · 22927 GROSSHANSDORF · GERMANY PHONE: +49 (0)4102-6956-0 · FAX: +49 (0)4102-6956-66 · E-MAIL: info@spec.de · INTERNET: http://www.spectrum-instrumentation.com...
- Page 2 (c) SPECTRUM SYSTEMENTWICKLUNG MICROELECTRONIC GMBH AHRENSFELDER WEG 13-17, 22927 GROSSHANSDORF, GERMANY SBench is a registered trademark of Spectrum Systementwicklung Microelectronic GmbH. Microsoft, Visual C++, Visual Basic, Windows, Windows 98, Windows NT, Window 2000 and Windows XP are trademarks/registered trademarks of Microsoft Corporation. LabVIEW, DASYLab, Diadem and LabWindows/CVI are trademarks/registered trademarks of National Instruments Corporation.
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Page 3: Table Of Contents
Introduction........................6 Preface ....................................6 General Information ................................6 Different models of the MC.31xx series........................... 7 Additional options ................................9 Digital inputs.................................. 9 Extra I/O (Option -XMF)..............................9 Starhub ..................................10 Timestamp ................................... 10 The Spectrum type plate ..............................11 Hardware information................................. - Page 4 Programming the Board ....................36 Overview ..................................36 Register tables ................................... 36 Programming examples............................... 36 Error handling..................................36 Initialization..................................37 Starting the automatic initialization routine ........................37 PCI Register ................................. 37 Hardware version................................. 38 Date of production................................ 38 Serial number ................................38 Maximum possible sample rate ............................
- Page 5 Option Multiple Recording ....................77 Recording modes ................................77 Standard Mode................................77 FIFO Mode .................................. 77 Trigger modes..................................77 Resulting start delays..............................78 Option Gated Sampling ....................79 Recording modes ................................79 Standard Mode................................79 FIFO Mode .................................. 79 Trigger modes..................................79 General information and trigger delay ..........................
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Page 6: Introduction
Preface Introduction Introduction Preface This manual provides detailed information on the hardware features of your Spectrum instrumentation board. This information includes tech- nical data, specifications, block diagram and a connector description. In addition, this guide takes you through the process of installing your board and also describes the installation of the delivered driver package for each operating system. -
Page 7: Different Models Of The Mc.31Xx Series
Introduction Different models of the MC.31xx series Different models of the MC.31xx series The following overview shows the different available models of the MC.31xx series. They differ in the number of mounted acquisition modules and the number of available channels. You can also see the model dependant allocation of the input connectors. •... - Page 8 Different models of the MC.31xx series Introduction • MC.3112 • MC.3122 • MC.3132 MC.31xx Manual...
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Page 9: Additional Options
Introduction Additional options Additional options Digital inputs This option allows the user to acquire additional digital channels synchronous and phase-stable along with the analog data. Therefore the analog data is filled up with the digital bits up to 16 Bit data width. This leads to a possibility of acquiring 4 additional digital bits per channel with 12 bit res- olution boards, and 2 additional digital bits per channel with 14 bit resolution boards. -
Page 10: Starhub
Additional options Introduction Starhub The star hub module allows the synchronisation of up to 16 MC boards. It is possible to synchronise boards of the same type with each other as well as different types. The module acts as a star hub for clock and trigger signals. Each board is connected with a small cable of the same length, even the master board. -
Page 11: The Spectrum Type Plate
Introduction The Spectrum type plate The Spectrum type plate The Spectrum type plate, which consists of the following components, can be found on all of our boards. The board type, consisting of the two letters describing the bus (in this case MC for the CompactPCI bus) and the model number. The size of the on-board installed memory in MSamples. -
Page 12: Hardware Information
Hardware information Introduction Hardware information Block diagram Technical Data Resolution 12 bit Dimension 160 x 233 mm (Standard 6U) ≤ 1 LSB (ADC) Differential linearity error Width (Standard) 1 slot ≤ 2.5 LSB (ADC) Integral linearity error Width (with digital inputs) 2 slots Multi: Trigger to 1st sample delay Connector... -
Page 13: Dynamic Parameters
Introduction Hardware information Dynamic Parameters MC.3110 MC.3112 MC.3120 MC.3122 MC.3130 MC.3132 MC.3111 MC.3121 MC.3131 Test - Samplerate 1 MS/s 1 MS/s 10 MS/s 10 MS/s 25 MS/s 25 MS/s Testsignal frequency 90 kHz 90 kHz 1 MHz 1 MHz 1 MHz 1 MHz SNR (typ) >... -
Page 14: Hardware Installation
System Requirements Hardware Installation Hardware Installation System Requirements All Spectrum MC.xxxx instrumentation boards are compliant to the CompactPCI 6U standard and require in general one free slot. Depending on the installed options additional free slots can be necessary. Warnings ESD Precautions The boards of the MC.xxxx series contain electronic components that can be damaged by electrostatic discharge (ESD). -
Page 15: Installing A Board With Digital Inputs/Outputs
Hardware Installation Installing the board in the system Installing a board with digital inputs/outputs The locks on the top and bottom side of both CompactPCI brackets need to be unlocked and opened before installing the board into a free slot of the system. Therefore you need to press the little buttons on the inside of the fasteners and move them outwards (see figure). Now slowly insert the card into the host system using the key ways until both locks snap in with a „click“. -
Page 16: Installing Multiple Boards Synchronized By Starhub
Installing the board in the system Hardware Installation Installing multiple boards synchronized by starhub Hooking up the boards Before mounting several synchronized boards for a multi channel system into the chassis you have to hook up the boards with their synchronization cables first. Spectrum ships the boards together with the needed amount of synchronization ca- bles. -
Page 17: Installing Multiple Synchronized Boards
Hardware Installation Installing the board in the system Installing multiple synchronized boards Hooking up the boards Before mounting several synchronized boards for a multi channel system into the chassis you have to hook up the boards with their syncronization cables first. Spectrum ships the boards together with the needed synchronization cable. -
Page 18: Software Driver Installation
Interrupt Sharing Software Driver Installation Software Driver Installation Before using the board a driver must be installed that matches the operating system. The installation is done in different ways depending on the used operating system. The driver that is on CD supports all boards of the MI, MC and MX series. That means that you can use the same driver for all boards of theses families. -
Page 19: Windows 98
Software Driver Installation Windows 98 Windows 98 Installation When installing the board in a Win- dows 98 system the Spectrum board will be recognized automatically on the next start-up. The system offers the direct installa- tion of a driver for the board. Let Windows search automatically for the best driver for your system. -
Page 20: Driver - Update
Windows 98 Software Driver Installation After clicking the driver info button the detailed version information of the driver is shown. In the case of a support question this information must be presented together with the board’s serial number to the support team to help finding a fast solution. Driver - Update If a new driver version is to be installed no Spectrum board should be in use. -
Page 21: Windows 2000
Software Driver Installation Windows 2000 Windows 2000 Installation When installing the board in a Windows 2000 system the Spectrum board will be rec- ognized automatically on the next start-up. The system offers the direct in- stallation of a driver for the board. -
Page 22: Driver - Update
Windows 2000 Software Driver Installation Driver - Update If a new driver version should be installed no Spectrum board is allowed to be in use by any software. So please stop and exit all software that could access the boards. A new driver version is direct- ly installed from the device manager. -
Page 23: Windows Xp
Software Driver Installation Windows XP Windows XP Installation When installing the board in a Windows XP system the Spectrum board will be rec- ognized automatically on the next start-up. The system offers the direct installation of a driver for the board. Do not let Windows automatically search for the best driver, be- cause sometimes the driver will not be found on the CD. -
Page 24: Driver - Update
Windows XP Software Driver Installation On the property page Windows XP shows the date and the version of the installed driver. After clicking the driver details button the detailed version information of the driver is shown. In the case of a support question this information must be presented together with the board’s serial number to the support team to help finding a fast solution. -
Page 25: Windows Nt
Software Driver Installation Windows NT Windows NT Installation Under Windows NT the Spectrum driver must be in- stalled manually. The driver is found on CD in the directory \Install\WinNTDrv. Please start the „Setup.exe“ pro- gram. The installation is per- formed totally automatically, simply click on the „Next“... -
Page 26: Linux
Linux Software Driver Installation Linux Overview The Spectrum boards are delivered with drivers for linux. It is necessary to install them manually following the steps explained afterwards. The linux drivers can be found on CD in the directory /Driver/linux. As linux is an open source operating system there are several distributions in use world-wide that are compiled with different kernel settings. - Page 27 Software Driver Installation Linux Installing the device You connect a device to the driver with the mknod command. The major number is the number of the driver as shown in the last step, the minor number is the index of the board starting with 0. This step must only be done once for the system where the boards are installed in. The device will remain in the file structure even if the board is de-installed from the system.
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Page 28: Software
Software Overview Software Software This chapter gives you an overview about the structure of the drivers and the software, where to find and how to use the examples. It detailed shows how the drivers are included under different programming languages and where the differences are when calling the driver functions from different programming languages. -
Page 29: C/C++ Driver Interface
Software C/C++ Driver Interface C/C++ Driver Interface C/C++ is the main programming language for which the drivers have been build up. Therefore the interface to C/C++ is the best match. All the small examples of the manual showing different parts of the hardware programming are done with C. Header files The basic task before using the driver is to include the header files that are delivered on CD together with the board. -
Page 30: Other Windows C/C++ Compilers
C/C++ Driver Interface Software Examples Examples can be found on CD in the path /Examples/linux. There is one subdirectory for each board family. You’ll find board specific ex- amples for that family there. The examples are bus type independent. As a result that means that the MI30xx directory contains examples for the MI.30xx, the MC.30xx and the MX.30xx families. - Page 31 Software C/C++ Driver Interface Using the Driver under Linux: hDrv = open ("/dev/spc0", O_RDWR); close (hDrv); Function SpcSetParam All hardware settings are based on software registers that can be set by the function SpcSetParam. This function sets a register to a defined value or executes a command.
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Page 32: Delphi (Pascal) Programming Interface
Delphi (Pascal) Programming Interface Software Function SpcGetData int16 SpcGetData (int16 nr, int16 ch, int32 start, int32 len, dataptr data); Under Linux the additional parameter nBytesPerSample must be used for this function. For all boards with 8 bit resolution the parameter is „1“, for all boards with 12, 14 or 16 bit resolution this parameter has to be „2“, when reading timestamps this parameter has to be „8“. - Page 33 Software Delphi (Pascal) Programming Interface The value „nr“ contains the index of the board that you want to access, the value „reg“ is the register that has to be changed and the value „value“ is the new value that should be set to this software register. The function will return an error value in case of malfunction. Function SpcGetParam The function SpcGetParam reads out software registers or status information.
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Page 34: Visual Basic Programming Interface
Visual Basic Programming Interface Software Visual Basic Programming Interface The Spectrum boards can be used together with Microsoft Visual Basic as well as with Microsoft Visual Basic for Applications. This allows per example the direct access of the hardware from within Microsoft Excel. The interface between the programming language and the driver is the same for both. - Page 35 Software Visual Basic Programming Interface Function SpcGetParam The function SpcGetParam reads out software registers or status information. The board must first be initialized. The available software re- gisters for the driver are listed in the board specific part of the documentation below. The value „nr“...
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Page 36: Programming The Board
Overview Programming the Board Programming the Board Overview The following chapters show you in detail how to program the different aspects of the board. For every topic there’s a small example. For the examples we focussed on Visual C++. However as shown in the last chapter the differences in programming the board under different programming languages are marginal. -
Page 37: Initialization
Programming the Board Initialization This means as a result that it is not necessary to check each driver call for an error but to check for an error before the board is started to see whether all settings have been valid. By reading all the error information one can easily examine where the error occured. -
Page 38: Hardware Version
Initialization Programming the Board Hardware version Since all of the MI, MC and MX boards from Spectrum are modular boards, they consist of one base board and one or two (only PCI and CompactPCI) piggy-back modules. This register SPC_PCIVERSION gives information about the revision of either the base board and the mod- ules. -
Page 39: Used Interrupt Line
Programming the Board Initialization PCIBIT_STARHUB 2048 Is set on the board, that carrys the starhub piggy-back module. This flag is set in addition to the PCIBIT_SYNC flag mentioned above. If on no synchronized board the starhub option is installed, the boards are synchronized with the cascading option. -
Page 40: Powerdown And Reset
Powerdown and reset Programming the Board Example program for the board initialization The following example is only an exerpt to give you an idea on how easy it is to initialize a Spectrum board. // ----- Initialization of PCI Bus Boards ----------------------------------- if (SpcInitPCIBoards (&nCount, &nPCIBusVersion) != ERR_OK) return;... -
Page 41: Analog Inputs
Analog Inputs Channel Selection Analog Inputs Channel Selection One key setting that influences all other possible settings is the channel enable register. An unique feature of the Spectrum boards is the possibility to program the number of channels you want to use. All on-board memory can then be used by these activated channels. This description shows you the channel enable register for the complete board family. -
Page 42: Channel Rerouting
Channel rerouting Analog Inputs Channel rerouting If you only use one or half of the available channels per module enabled, you can route the input connectors to the acquisition channels differently. Normally connector channel 0 is routed to the acquisition channel 0. If you just need for example one channel it might be usefull to record just the signal connected for example to connector channel 2. -
Page 43: Setting Up The Inputs
Analog Inputs Setting up the inputs Setting up the inputs Input ranges This analog acquisition board uses separate input amplifiers and converters on each channel. This gives you the possibility to set up the de- sired and concerning your application best suiting input range also separately for each channel. The input ranges can easily be set by the corresponding input registers. -
Page 44: Input Offset
Setting up the inputs Analog Inputs Input offset In most cases the external signals will not be symmetrically re- lated to ground. If you want to acquire such asymmetrical sig- nals, it is possible to use the smallest input range that matches the biggest absolute signal amplitude without exceeding the range. -
Page 45: Overrange Bit
Analog Inputs Setting up the inputs to the input range of ± 1.0 V. After that the four offset settings are set exactely as the offsets to be compensated, but with the the opposite sign. The result is, that all four channels match perfectely to the choosen input range. SpcSetParam (hDrv, SPC_AMP0 , 1000);... - Page 46 Setting up the inputs Analog Inputs of sets available for storing user offset settings depends on the type of board you use. The table below shows all the EEPROM sets, that are available for your board. Register Value Direction Description SPC_ADJ_LOAD 50000 Loads the specified set of settings from the EEPROM.
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Page 47: Standard Acquisition Modes
Standard acquisition modes General Information Standard acquisition modes General Information The standard mode is the easiest and mostly used mode to acquire analog data with a Spectrum A/D board. In standard recording mode the board is working totally independant from the host system (in most cases a standard PC), after the board setup is done. The advantage of the Spectrum boards is that regardless to the system usage the board will sample with equidistant time intervals. -
Page 48: Starting Without Interrupt (Classic Mode)
Programming Standard acquisition modes Maximum posttrigger in MSamples n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. The amount of memory that can be either set for the used memsize and postcounter values can only be set by certain steps. These steps are results of the internal memory organization. -
Page 49: Starting With Interrupt Driven Mode
Standard acquisition modes Programming Status register Register Value Direction Description SPC_STATUS Status register, of the board. SPC_RUN Indicates that the board has been started and is waiting for a triggerevent. SPC_TRIGGER Indicates that the board is running and a triggerevent has been detected. SPC_READY Indicates, that the board has stopped. -
Page 50: Data Organization
Programming Standard acquisition modes Data organization Normal mode This chapter shows the data organization for all acquisitions that are done with the normal data width of 12 bit. The data organization for the fast 8 bit mode is described in the next passage. In standard mode tha data is organized on the board in two memory channels, named memory channel 0 and memory channel 1. -
Page 51: Reading Out The Data With Spcgetdata
Standard acquisition modes Programming If the fast 8 bit mode is used the upper byte of the memory word is used to store one channel and the lower byte is used to store another channel. Data must be read out in the normal way from channel 0 (containing 8 bit data of ch0+ch1), channel 1 (ch2+ch3), channel 4 (ch4+ch5) and channel 5 (ch6+ch7) as described above and split into the two 8 bit channels in software afterwards. - Page 52 Programming Standard acquisition modes Example for SpcGetData, no memory allocation error checking performed: for (i = 0; i < 2; i++) // both memory channels have been used pnData[i] = (ptr16) malloc (lMemsize * lBytesPerSample); // allocate memory for the data pointers // with the maximum size (lMemsize) SpcGetData (hDrv, 0, 0, lMemsize, (dataptr) pnData[0]);...
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Page 53: Fifo Mode
FIFO Mode Overview FIFO Mode Overview General Information The FIFO mode allows to record data continuously and trans- fer it online to the PC (acquisition boards) or allows to write data continuously from the PC to the board (generation boards). Therefore the on-board memory of the board is used as a continuous buffer. -
Page 54: Programming
Programming FIFO Mode Theoretical maximum sample rate PCI Bus Throughput 1 Channel 50 MS/s [1 Channel] x [2 Bytes per sample] * 50 MS/s = 100 MB/s 2 Channels 25 MS/s [2 Channels] x [2 Bytes per sample] * 25 MS/s = 100 MB/s 4 Channels 12.5 MS/s [4 Channels] x [2 Bytes per sample] * 12.5 MS/s = 100 MB/s... -
Page 55: Buffer Processing
FIFO Mode Programming Analog acquisition or generation boards Buffer length to be programmed in Bytes 8 bit resolution 12 bit resolution 14 bit resolution 16 bit resolution 1 Channel 1 x [Samples in Buffer] 1 x 2 x [Samples in Buffer] 1 x 2 x [Samples in Buffer] 1 x 2 x [Samples in Buffer] 2 Channels... -
Page 56: Fifo Mode
Programming FIFO Mode FIFO mode In normal applications the FIFO mode will run in a loop and process one buffer after the other. There are a few special commands and reg- isters for the FIFO mode: Register Value Direction Description SPC_COMMAND Command register. -
Page 57: Sample Format
FIFO Mode Programming The following example shows how to sort the channel data when using 4 channels in FIFO mode: for (i = 0; i < (lBufferSizeInSamples / 4); i++) Data[0][i] = FIFOBuffer[i * 4 + 0]; Data[1][i] = FIFOBuffer[i * 4 + 2]; Data[2][i] = FIFOBuffer[i * 4 + 1];... -
Page 58: Clock Generation
Overview Clock generation Clock generation Overview The Spectrum boards offer a wide variety of different clock modes to match all the customers needs. All the clock modes are described in detail with programming examples below. This chapter simply gives you an overview which clock mode to select: Standard internal sample rate PLL with internal 40 MHz reference. -
Page 59: Using Plain Quartz Without Pll
Clock generation Internally generated sample rate Maximum internal sample rate in MS/s normal mode Remapped channels n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. n.a. -
Page 60: External Clocking
External clocking Clock generation External clocking Direct external clock An external clock can be fed in on the external clock connector of the board. This can be any clock, that matches the specification of the card. The external clock signal can be used to synchronize the card on a system clock or to feed in an exact matching sample rate. Register Value Direction... -
Page 61: External Clock With Divider
Clock generation External clocking Mode EXRANGE_SINGLE EXRANGE_BURST_S EXRANGE_BURST_M EXRANGE_BURST_L EXRANGE_BURST_XL Standard/FIFO < 5 MHz 5 MHz - max Standard/FIFO < 2.5 MHz 2.5 MHz - 7.5 MHz 7.5 MHz - 17.5 MHz 17.5 MHz - 36 MHz > 36 MHz Standard <... -
Page 62: Trigger Modes And Appendant Registers
General Description Trigger modes and appendant registers Trigger modes and appendant registers General Description The trigger modes of the Spectrum MI, MC and MX A/D boards are very complex and give you the possibility to detect nearly any trigger event, you can think of. You can choose between seven external TTL trigger modes and up to 18 internal trigger modes including software and channel trigger, de- pending on your type of board. -
Page 63: Edge Triggers
Trigger modes and appendant registers External TTL trigger If you choose an external trigger mode the SPC_TRIGGEROUT register will be overwritten and the trigger connector will be used as an input anyways. Register Value Direction Description SPC_TRIGGEROUT 40100 Defines the data direction of the external trigger connector. If external triggermodes are used, this register will have no effect. -
Page 64: Pulsewidth Triggers
External TTL trigger Trigger modes and appendant registers Positive and negative TTL trigger This mode is for detecting the rising and falling edges of an ex- ternal TTL signal. The board will trigger on the first rising or falling edge that is detected after starting the board. The next triggere- vent will then be detected, if the actual recording/replay has fin- ished and the board is armed and waiting for a trigger again. - Page 65 Trigger modes and appendant registers External TTL trigger TTL pulsewidth trigger for long LOW pulses This mode is for detecting LOW pulses of an external TTL signal that are longer than a programmed pulsewidth. If the pulse is shorter than the programmed pulsewidth, no trigger will be de- tected.
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Page 66: Channel Trigger
Channel Trigger Trigger modes and appendant registers Channel Trigger Overview of the channel trigger registers The channel trigger modes are the most common modes, compared to external equipment like oscilloscopes. The 17 different channel trigger modes enable you to observe nearly any part of the analog signal. This chapter is about to explain the different modes in detail. To enable the channel trigger, you have to set the triggermode register accordingly. -
Page 67: Triggerlevel
Trigger modes and appendant registers Channel Trigger If you want to set up a four channel board to detect a triggerevent on either a positive edge on channel1 or a negative edge on channel3 you would have to set up your board as the following example shows. SpcSetParam (hDrv, SPC_TRIGGERMODE , TM_CHOR // Enable channel OR trigger mode SpcSetParam (hDrv, SPC_TRIGGERMODE0, TM_CHXOFF);... - Page 68 Channel Trigger Trigger modes and appendant registers Input ranges Triggerlevel ±50 mV ±100 mV ±200 mV ±500 mV ±1 V ±2 V ±5 V ±10 V +49.6 mV +99.2 mV +198.4 mV +496.1 mV +992.2 mV +1.98 V +4.96 V +9.92 V +49.2 mV +98.4 mV...
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Page 69: Detailed Description Of The Channel Trigger Modes
Trigger modes and appendant registers Channel Trigger Detailed description of the channel trigger modes Channel trigger on positive edge The analog input is continuously sampled with the selected sample rate. If the programmed triggerlevel is crossed by the channel’s signal from lower values to higher values (ris- ing edge) then the triggerevent will be detected. - Page 70 Channel Trigger Trigger modes and appendant registers Channel pulsewidth trigger for long positive pulses The analog input is continuously sampled with the selected sample rate. If the programmed triggerlevel is crossed by the channel’s signal from lower to higher values (rising edge) the pulsewidth counter is started.
- Page 71 Trigger modes and appendant registers Channel Trigger Channel pulsewidth trigger for short positive pulses The analog input is continuously sampled with the selected sample rate. If the programmed triggerlevel is crossed by the channel’s signal from lower to higher values (rising edge) the pulsewidth counter is started.
- Page 72 Channel Trigger Trigger modes and appendant registers Channel steepness trigger for flat positive pulses The analog input is continuously sampled with the selected sample rate. If the programmed lower level is crossed by the channel’s signal from lower to higher values (rising edge) the pulsewidth counter is started.
- Page 73 Trigger modes and appendant registers Channel Trigger Channel steepness trigger for steep positive pulses The analog input is continuously sampled with the selected sample rate. If the programmed lower level is crossed by the channel’s signal from lower to higher values (rising edge) the pulsewidth counter is started.
- Page 74 Channel Trigger Trigger modes and appendant registers Channel window trigger for entering signals The analog input is continuously sampled with the selected sample rate. The upper and the lower level define a win- dow. Every time the signal enters the the window from the outside, a triggerevent will be detected.
- Page 75 Trigger modes and appendant registers Channel Trigger Channel window trigger for long inner signals The analog input is continuously sampled with the selected sample rate. The upper and the lower levels define a win- dow. Every time the signal enters the window from the out- side, the pulsewidth counter is startet.
- Page 76 Channel Trigger Trigger modes and appendant registers Channel window trigger for short inner signals The analog input is continuously sampled with the selected sample rate. The upper and the lower levels define a win- dow. Every time the signal enters the window from the out- side, the pulsewidth counter is startet.
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Page 77: Option Multiple Recording
Option Multiple Recording Recording modes Option Multiple Recording The option Multiple Recording allows the acquisition of data blocks with multiple trigger events without restarting the hardware. The on-board memory will be divided into several segments of the same size. Each segment will be filled with data when a trigger event occures. As this mode is totally done in hardware there is a very small rearm time from end of the acquisition of one segment until the trigger detection is enabled again. -
Page 78: Resulting Start Delays
Trigger modes Option Multiple Recording Resulting start delays Sample rate Activated channels external TTL trigger internal trigger ext. TTL trigger with internal trigger with activated activated synchronization synchronization < 5 MS/s -4 samples +4 samples -3 samples +5 samples > 5 MS/s +4 samples +16 samples +5 samples... -
Page 79: Option Gated Sampling
Option Gated Sampling Recording modes Option Gated Sampling The option Gated Sampling allows the data acquisition controlled by an external gate signal. Data will only be recorded, if the programmed gate condition is true. Recording modes Standard Mode Data will be recorded as long as the gate signal fulfills the gate condition that has had to be programmed before. -
Page 80: End Of Gate Alignement
Trigger modes Option Gated Sampling the number of acquired samples will be less than the gate signal length. See table on the next page for further explanation. End of gate alignement Due to the structure of the on-board memory there is an- other delay at the end of the gate interval. -
Page 81: Resulting Start Delays
Option Gated Sampling Trigger modes Resulting start delays Sample rate Activated channels external TTL trigger internal trigger ext. TTL trigger with internal trigger with activated activated synchronization synchronization < 5 MS/s -4 samples +4 samples -3 samples +5 samples > 5 MS/s +4 samples +16 samples +5 samples... -
Page 82: Example Program
Example program Option Gated Sampling Channel trigger Mode Gate start will be detected on Gate end will be detected on TM_CHXPOS signal crossing level from low to high signal crossing level from high to low TM_CHXNEG signal crossing level from high to low signal crossing level from low to high TM_CHXPOS_LP signal above level longer than the programmed pulsewidth... -
Page 83: Option Timestamp
Option Timestamp General information Option Timestamp General information The timestamp function is used to record trigger events relative to the beginning of the measurement, relative to a fixed time-zero point or synchronized to an external radio clock. This is done by a wide resetable counter that is incremented with every sample rate. With every detected trigger event the actual counter value is stored in a seperate timestamp memory. -
Page 84: Refclock Mode (Optional)
Timestamp Status Option Timestamp TS_MODE_STARTRESET Must be written to enable the StartReset timestamp mode. The counter is reset on each start of the board. The times- tamps values are relative to the board start. RefClock mode (optional) The counter is split in a HIGH and a LOW part and an additional seconds signal, that affects both parts of the counter (TTL pulse with f = 1 Hz) must be fed in externally. -
Page 85: Data Format
Option Timestamp Reading out timestamp data Using this function will not give you back a whole timestamp, as the timestamp values are wider than 32 bit. Please also refer to the section on the timestamp data format below. Reading out all the timestamps with SpcGetData When using the function SpcGetData the data stored in the timestamp FIFO will be read out in one block by the driver. -
Page 86: Example Programs
Example programs Option Timestamp Example programs Standard acquisition mode // ----- Allocate memory for the timestamp data buffer ----- plTimeStamps = (ptr32) malloc (MAX_TIMESTAMPS * 8); // ----- Reset the board and flush the FIFO ----- SpcSetParam (hDrv, SPC_COMMAND, SPC_RESET); // ----- Setup and start timestamp module ----- SpcSetParam (hDrv, SPC_TIMESTAMP_CMD, TS_MODE_STANDARD);... -
Page 87: Option Extra I/O
Option Extra I/O Digital I/Os Option Extra I/O Digital I/Os With this simple-to-use enhancement it is possible to control a wide range of external instruments or other equipment. Therefore you have several digital I/Os and the 4 analog outputs available. All extra I/O lines are completely independent from the board’s function, data di- rection or sample rate and directly controlled by software (asynchronous I/Os). -
Page 88: Programming Example
Programming example Option Extra I/O Programming example The following example shows how to use either the digital I/O#s and the analog outputs. // ----- output 8 bit on D7 to D0 and read 8 bit on D15 to D8 ----- SpcSetParam (hDrv, SPC_XIO_DIRECTION, XD_CH0_OUTPUT | XD_CH1_INPUT);... -
Page 89: Option Digital Inputs
Option Digital inputs Option Digital inputs This option allows the user to acquire additional digital channels synchronous and phasestable along with the analog data. Therefore the analog data is filled up with the digital bits up to 16 Bit data width. This leads to a possibility of acquiring 4 additional digital bits per channel with 12 bit resolution boards. -
Page 90: Synchronization (Option)
The different synchronization options Synchronization (Option) Synchronization (Option) This option allows the connection of multiple boards to generate a multi-channel system. It is possible to synchronize multiple Spectrum boards of the same type as well as different board types. Therefore the synchronized boards must be linked concerning the board’s system clock and the trigger signals. -
Page 91: The Setup Order For The Different Synchronization Options
Synchronization (Option) The setup order for the different synchronization options When the boards are synchronized by the option starhub there will be no delay between the connected boards. This is achieved as all boards, including the one the starhub module is mounted on, are connected to the starhub with cables of the same length. - Page 92 The setup order for the different synchronization options Synchronization (Option) Example for data writing SpcSetData (hDrv[0], 0, 0, 1024, pData[0]); SpcSetData (hDrv[1], 0, 0, 1024, pData[1]); SpcSetData (hDrv[2], 0, 0, 1024, pData[2]); (4) Define the board(s) for trigger master At least one board must be set as the trigger master to get synchronization running. Every one of the synchronized boards can be programmed for beeing the trigger master device.
- Page 93 Synchronization (Option) The setup order for the different synchronization options Even if a board is not using the synchronization trigger, it must have been set as a triggerslave before even if you exclude the board with the SPC_NOTRIGSYNC register. After you have excluded one or more of the installed boards from the synchronization trigger it is possible to change the triggermodes of these boards.
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Page 94: Setup Synchronization For Use With Fifo Mode And Equally Clokked Boards
Setup synchronization for use with FIFO mode and equally clokked boards Synchronization (Option) (10) Start all of the trigger master boards After having armed the synchronized boards, you must start all of the boards, that are defined as trigger masters. Register Value Direction... - Page 95 Synchronization (Option) Setup synchronization for use with FIFO mode and equally clokked boards Example of FIFO buffer allocation: for (i = 0; i < FIFO_BUFFERS; i++) for (b = 0; b < 3; b++) pnData[b][i] = (ptr16) GlobalAlloc (GMEM_FIXED, FIFO_BUFLEN); // allocate memory SpcSetParam (b, SPC_FIFO_BUFADR0 + i, (int32) pnData[b][i]);...
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Page 96: Additions For Synchronizing Different Boards
Setup synchronization for use with FIFO mode and equally clokked boards Synchronization (Option) for each board that runs synchronuously in FIFO mode. If this is not done a deadlock will occur and the program will not start properly. (10) Start all of the trigger master boards After having armed the synchronized boards, you must start all of the boards, that are defined as trigger masters. - Page 97 Synchronization (Option) Setup synchronization for use with FIFO mode and equally clokked boards All clock rates of all synchronized boards are derived from the clock signal that is distributed via the sync bus. This clock is the sum samplerate of one module of the clock master board. Based on this speed the clock rates of the slave boards can be set. As these clock rates are divided from the sync clock, the board with the maximum sum sample rate should be set up as clock master.
- Page 98 Setup synchronization for use with FIFO mode and equally clokked boards Synchronization (Option) Setting up the clock divider The clock divider can easily be set by the following register. Please keep in mind that the divider must be set for every synchronized board to have synchronization working correctly.
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Page 99: Additions For Equal Boards With Different Sample Rates
Synchronization (Option) Setup synchronization for use with FIFO mode and equally clokked boards Additions for equal boards with different sample rates In addition to the possibility of synchronizing different types of boards to one synchronous sample rate it can be also useful in some cases to synchronize boards of the same type, with one working at a divided speed. -
Page 100: Appendix
Error Codes Appendix Appendix Error Codes The following error codes could occur when a driver function has been called. Please check carefully the allowed setup for the register and change the settings to run the program. error name value (hex) value (dec.) error description ERR_OK... -
Page 101: Pin Assignment Of The Multipin Connector
Pin assignment of the multipin connector Pin assignment of the multipin connector The 40 lead multipin connector is used for different options, like “Extra I/O“ or the additional digital inputs (on analog acquisition boards only) or additional digital outputs (on analog generation boards only). -
Page 102: Pin Assignment Of The Multipin Cable
Pin assignment of the multipin cable Pin assignment of the multipin cable The 40 lead multipin cable is used for the additional digital inputs (on analog acquisition boards only) or additional digital outputs (on analog generation boards only) as well as for the digital I/O or pat- tern generator boards.
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