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User Manual: Agilent Acqiris U1084A

1. 19 2 20 Installation After Restarting LabVIEW RT Windows Under Windows you must login with administrator privileges after the first boot following the hardware installation the Plug amp Play system must have the appropriate privileges to be able to complete your hardware installation successfully After a successful hardware installation you will be able to use your Agilent Acqiris module s with normal privileges During program development you can choose whether you use LabVIEW or LabVIEW RT compatible libraries by switching the version present in National Instruments LabVIEW m n instr lib This swap can be facilitated by using the Install VI library for LabVIEW or LabVIEW Real Time shortcut available in the Agilent Acgiris Shortcut folder There ts only one Agilent Acqiris Driver It supports all Agilent Acqiris instruments The instructions below concern LabVIEW RT as used in NI PXI processors The Aq_RT inf and AgRT_4 ini files must be uploaded to the target To do this e start the NI MAX application e right click on the target and select file transfer e select the Aq RT inf file on your host machine and upload To Remote to the LabVIEW RT working directory NI RT system on the target e select the Aq_RT ini file on your host machine and upload To Remote to the LabVIEW RT working directory NI RT system giving it the name AgDrv4 ini For Agilent Acqiris modules which need FPGA files you
2. Once the software and hardware installation described in Section 2 of this manual is complete you will find AcqirisLive in the start menu of your computer Start AcgirisLive from the menu An initial AcgirisLive load screen will appear followed by a panel of controls and a waveform display window During startup AcqirisLive searches for all Acqiris Averagers and Digitizers on the PCI bus If no modules are found on the PCI bus AcqirisLive will display an error message indicating that none were found and the program will continue in simulation mode If this is not wanted turn off the computer install and turn ON the hardware on the PCI bus and then restart the computer AcqirisLive is intended to verify the functionality of the card and to serve as an easy to use and convenient program for capturing displaving and archiving captured data into the format of your choice binary or ASCII AcqirisLive is provided free with the purchase of any Acairis Digitizer Averager or Analyzer We supply drivers on the CDROM for National Instruments LabWindows CVI LabVIEW Microsoft Visual C MATLAB and Visual Basic We also provide some examples GetStarted applications as a guide or starting point for programmers developing their own applications to interface with the DC or DP series digitizer cards When you start AcqirisLive a display like that shown below appears Ep Agilent Technologies di 4 Running the AcgirisLive Application
3. The front end electronics are all mounted on a removable mezzanine card In the event of accidental damage or as components fatigue over time e g relays in high duty cycle automated testing applications the mezzanine card allows for fast and efficient replacement Bandwidth and Rise Time The bandwidth specification indicates the frequency at which an input signal will be attenuated by 3 dB approximately 30 loss of amplitude The bandwidth also affects the minimum rise and fall times that can be passed through the front end electronics A pulse with a very sharp edge will be observed to have a minimum rise time Tmin determined by the front end electronics In general a pulse with a given 10 90 rise time T10 90real Will be observed with a slower value given by Goe z T10 90real E where Tmin ns 0 35 GHz ns BW GHz If desired hardware bandwidth limiters can be selected Input Voltage and Offset The input channel provides a fully programmable amplifier with variable input voltage and offset Full Scale FS input voltages are selectable from 50 mV to 5 V in a 1 2 5 sequence Care should be taken to select an input voltage range that will allow the signal to be recorded using as much dynamic range of the digitizer as possible Signals going outside of the FS Range will be clipped and data values for the clipped portion of a signal should be regarded as erroneous The Variable Offset is programmable in the range of
4. 0 5 ns per point down to 488 28 kS s 2 us per point in binary steps The data of all of the active channels is acquired synchronously all of the ADC s are acquiring data at the same time to within a small fraction of the maximum sampling rate Alternatively the digitizer can be run in a single channel mode with Sampling rates up to 4 GS s Data Acquisition Digitizer Mode Agilent U1084A Digitizer with averager Acquisition Memory and Time Base Range Digitizer Mode Data from the ADC Is stored in on board acquisition memory The amount of memory in use for acquisition can be programmed and is selectable from 2 samples to 16KS in combined channel mode Note that the Accumulation s memory is much greater The raw ADC data is treated as a value in the range 128 127 which corresponds to the voltage range FS 2 Offset FS 2 Offset For technical reasons a certain memory overhead is required for each waveform reducing the available memory by a small amount In order to simplify programming an interface function recommends the best sampling rate and the maximum possible number of data points taking into account the available memory the requested time window as well as the required memory overhead 31 3 32 Product Description The Time Base Range defines the time period over which data is being acquired For example the U1084A in the dual channel digitizer mode has an acquisition memory of just und
5. 128 lt base lt 127 or equivalently Offset lt Vpase lt FS Offset The average value is obtained by dividing the sum by the total number of triggers which is often much greater than the number of triggers that actually contributed to the sum The interpretation of the absolute voltage value is not obvious Pre Acquisition Triggers For applications where thermal effects must be taken into account the digitizer module has the capability of generating trigger output pulses that can be used to activate the system even when the associated event will not be acquired The trigger output pulses can be used to stabilize systems prior to starting the acquisition A call to AcqrsD1_configAvgContig using the parameter string TrigAlways will cause these pulses to be generated The trigger rate should not exceed that which can normally be taken under the chosen acquisition conditions External Clock and Reference Agilent U1084A Digitizer with averager For applications where the user wants to replace the internal clock of the digitizer and drive the ADC with an external source an External Clock or Reference signal input is available The Clock or Reference signals can be entered into the digitizer via the MCX CK connector on the front panel When using an External Clock the user must ensure that the input signal has a frequency of either 1 GHz or 2 GHz and a minimum amplitude of at least 1 V peak to peak The External Clock allo
6. 2 ead sequ 3 Soft A Start Data available for Data available for Data available for Acquisition readout readout readout Idie Simultaneous accumulate amp read sequence Idle Tst Tacat Blue indicates a variable time interval while black denotes a fixed time interval Agilent U1084A Digitizer with averager 39 3 40 Product Description Random and Synchronized Triggers In the normal mode the trigger output is a low jitter copy of the trigger input with a fixed delay Tyigout Of aprox 13 ns This mode is also called the Non Resync mode in analogy with the same mode of previous generation of Acqiris Averager In Non Resync mode start of the acquisition has a jitter shot to shot of half the sampling period relative to either the internal trigger or to the external trigger out signal In order to preserve the timing accuracy of successively summed acquisitions the digitizer also offer the mode SyncOnTrigOutSynce In this mode the external trigger out signal is synchronized to the internal sampling clock to within lt 50 ps Any external event triggered synchronously to the external trigger out signal will show a jitter shot to shot below 50 ps The SyncOnTrigOutSync mode is the preferred method for applications where the acquisition jitter must be minimized to avoid loss of effective system bandwidth typically associated with the higher jitter found when using the Non Resync mode Ideally t
7. E Instrument Control ec x EA waveform Display Instrument Setup Store Options Help View Zoom 27210 crate 10 pos 17 Finder 0 Dsplfs B4AUUT Ch acqiris U10644001 Chi Ady Input Voltage Scale Coupling Be E ac DE Input Voltage Offset Impedance aooo amv Gen ima Trigger Ady Edge class Source U1084A001 Chi b Coupling lo D oc z Delay Eiz 0008 GEN rooms MY Memory 150000 50 0 K samples 4 i 1 00 segments Ira Sampling Interval Rate 500 00ps 2 0000 GS s Acquisition AUTO NORMAL SINGLE STOP 16 02 05 Starting calibration Al 16 02 11 Instrument 1 calibrated 16 02 11 Ready 16 02 11 buffer padding 144 samples I Trig Time 2 00 GS s 100 ns Div AcqirisLive displays two independent windows a control window and a display window The control window contains functions that allow you to manipulate the acquisition parameters of the card In order to display an acquired waveform connect a signal to the input and then select the Auto acquisition mode at the bottom of the control panel A waveform should appear in the display Other controls in the control panel allow you to select the optimal acquisition settings for your particular signal Each of the other control panel functions will be discussed in detail in the following Control Panel Functions section Here is a sample result 48 Agilent U1084A Digitizer with averager Runnin
8. Raw ADC values or Amplitudes in Volts Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 2 TheAutostore option allows EE i Lift you to store Destination folder consecutively Eee acquired B waveforms Number of wavefornis to store I from all of the i active Max total samples memory MB f 00 channels into files Configura tion of Autostore IS Binat format C Raw ADC values achieved by Total storage 691 MB selecting the Autostore F Seoments as columns item underthe Store menu F diz hes atend Show waveforms Autostore DE Cancel brings up the dialog box shown here Three formats are available for stored waveforms Binary Raw ADC values and Amplitude values in Volts The destination folder can be selected or created on any system drive using the Browse button Waveforms will be stored in a new folder under the destination folder The new folder will be named AcqirisRun_ date time Each waveform will be stored in a file with a name channel identifier _ i suffix where i goes from 1 to N and the suffix indicates the data type If the data is stored in Binary form the suffix will be data and an additional ASCII format awh file is written which contains necessary details about each of the other files Otherwise the suffix will be awd The number of generations of waveforms to be stored with this function is selectable from 1 to N N is
9. soap solution Remove any soap residue by wiping with a cloth moistened with clear water Do not use abrasive compounds on any parts Disposal and Recycling Electronic equipment should be properly disposed of Averagers and their accessories must not be thrown out as normal waste Separate collection IS appropriate and may be required by law 16 Agilent U1084A Digitizer with averager Agilent U1084A Digitizer User Manual Agilent Acqiris U1084A Digitizer with On board Processing 2 Installation This chapter describes how to install the Agilent Acqiris hardware and software for Windows National Instruments LabVIEW RT Wind River VxWorks or Linux Agilent Acqiris instruments are supported on the following operating systems e Microsoft Windows e National Instruments LabVIEW RT Wind River VxWorks e Linux The list of the specific operating system versions supported by each release is provided in the Release Notes section of the ReadMe file on the CD ROM ReadMe txt in the AcqirisSoftware Windows folder for the Windows distribution README in the AcqirisSoftware Linux folder for the Linux distribution The development support for the real time operating systems LabVIEW RT and VxWorks is provided for development on a Windows host and installed with the Windows installer For a first time installation we strongly recommend installing the software before inserting the hardware into the PC Installing the Software unde
10. user control of many details of the averaging operation as were explained in the chapter 3 section Data Acquisition Averaging Mode This includes the number of triggers required for each sum the dithering to be applied data inversion control for the NSA mode U1084A001 Chi 2X Averager Settings Humber of Rounds Waveforms Per Round SAR interrupt only Add Subtract TEE Mode a SEO Horse Suppressed Average Aa A Trigger Synchronization d Now EUNE Fesync Continuous I Trigger OUT always Channel based settings TBE THE Min Pulse width T Invert Data Histo nerement E Threshold 40 0000 Gen amp DC HNoise Base activating the Trigger OUT always option and activation of the SAR mode Note that the displayed waveform is that of the average data value in each bin so the NSA signal may be very small A zoom can be used to examine it in detail Control of the SAR mode will be available when the module Acquisition state is STOP and only if AcgirisLive has been launched in the interrupt mode switch i The kind of trigger synchronization the Number of Rounds the Add Subtract and TDC Mode are not available The Averager settings will appear for the currently selected channel If a different channel is desired select it in the Instrument Control window and then simply click anywhere in the Averager Settings window to force it to update to the new choice Agilent U1084A Digitizer with
11. EZ upper section of the display Only this channel will be affected by changes in any settings on the control panel The input voltage scale is set by one of three possible methods 1 Clicking on the white numeric display of the voltage scale will show a pop up list Select the desired gain setting with the mouse pointer 52 Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 2 Clickingon the Decrement Increment icons will step the voltage scale up or down to the next level for each click of the mouse 3 Clicking Max Min will toggle to the least sensitive gain setting or to the most sensitive gain setting p The input Coupling can be set for AC DC or Ground The selected setting is shown as an actuated indicator with a green backlight AC coupling blocks DC signal components from the input The AC coupling mode acts as a high pass filter passing frequencies above 10 Hz In DC coupling all frequency components are passed through the input The input voltage offset control applies an offset to the input amplifier in order to better digitize and display signals offset away from 0 volts Signals riding on a DC level can be most accurately characterized when the offset is adjusted so that the acquisitions are made about the midpoint of the digitizer s Full Scale Range and when as much of the 8 bit ADC range is used as possible The ability to select an offset volta
12. It gives you the information needed to better understand the trigger times of the Ea individual segments of an acquisition BY definition the first trigger of an acquisition occurs at t 0 0 There are two columns for each digitizer For the n th row the first column contains the difference t baa and the second column contains t The top line contains the average value of the t in the left column and the standard deviation of the t in the right one The times are in ps The Show Parameters option activates a display of pulse parameters for each active channel Inactive channels will have parameter values of 0 0 The parameters will be calculated in a model in which the distribution of measured voltages has two distinct peaks If this condition is not satisfied the results will be unreliable Agilent U1084A Digitizer with averager 65 4 Running the AcqirisLive Application Display Features Display features in the Options menu include items for e turning the waveform display off by de selecting Display Waveforms overlaying segments of a sequence e connecting displayed data points e modifying the display refresh rate e displaying the internal temperature of the currently selected module Command Line Switches When starting the AcqirisLive application the executable s name in the command line can be followed by one or more switches to change the running conditions Syntax The syntax
13. Ox In 15 Acquisition Active Ox Out 21 When this external control is selected the Analyzer acquisition state machine will start only when the input signal is set low Tacgact Must be gt 0s gt _ lt gt lt The Analyzer acquisition state machine is active Tanarm Analyzer Armed Ox Out 31 The Analyzer is ready to receive triggers gt gt Must be gt 0 s r Trigger Input Trigger Output E SCquisitan tats Acquire Accumulate Accumulate Teos Toff End of Acquisition gt Interrupt Front Panel LED color v End of Segment readout Software Time Stamp delay Start Last shot Acquisition acquired Endof Data available for Sequence readout Idle Segment Accumulation Idle Tst Tacat Blue indicates a variable time interval while black denotes a fixed time interval Tanarm S typically 40ns Ttrigout IS typically 13 ns Tog Is minimum 1 8 us Teos Can be calculated with this formula Nbr_samples 196 3 us Agilent U1084A Digitizer with averager 3 Product Description Sequence Average Mode For time resolved applications where multiple averaged waveforms must be acquired with minimal dead time between them the Sequence Average mode is available This mode partitions the averaging memory into a pre selected number of segments Each memory segment is then used
14. a maximum number dependent on the number of samples taken in each waveform There is also a user Agilent U1084A Digitizer with averager 61 4 62 Running the AcqirisLive Application selectable limit on the total amount of data allowed in any single Autostore acquisition series When using segmented memory with Autostore a waveform is considered to be a complete set of acquired segments When storing Amplitudes it is possible to write each segment as a separate column of data in the waveform file This is achieved by clicking the check box option Segments as columns in the Autostore settings window Formatting with segments in columns in Amplitude format is limited to 200 segments The Binary file format selection provides the fastest storage performance and generates the smallest files on the hard drive Binary files can be subsequently converted to either Raw ADC values or to Amplitude values using the Data Format Conversion utility provided with AcqirisLive Selecting the Write files at end option acquires all waveforms into memory first before converting to the selected format and writing the data to disk This option allows for faster data capture times Selecting the Show waveforms allows the user to see the waveforms before writing them to disk When all parameters are selected click OK and then select Normal Auto or Single acquisition mode When the waveforms are recorded a progress bar will appear to show
15. access to the choice of offset of the trigger out signal and the external trigger range Acquisition Mode Acquisition The acquisition mode of the GE JE digitizers is selected using one of EMA il SINGLE four acquisition mode buttons in the Acquisition section of the control panel Available acquisition modes are Auto Normal Single and Stop This Acquisition section of the control panel also indicates the number of waveforms acquired per second by the digitizer The use of each of the acquisition modes is described below In the discussion a valid trigger indicates a trigger signal meeting the trigger conditions at a time when the digitizer is armed and ready to acquire data Stop will stop the acquisition and hold the latest complete acquisition on the display Single mode is used in order to capture either for instruments in the digitizer class one event at the first valid trigger or for instruments in the Averager class an average over the desired number of triggers It freezes this result in the module s memory and on the display until the user Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 requests another acquisition After an acquisition is taken in Single mode the module will ignore subsequent trigger events until the Single button is pressed again or another acquisition mode is selected Pressing the single button re arms the trigger and c
16. automated test applications Agilent U1084A Digitizer with averager Product Description 3 The Digitizers include a high precision voltage source and a 16 bit DAC used to determine the input voltage and offset calibration For accurate time and voltage measurements It is recommended to perform a calibration once the module has attained a stable operating temperature usually reached with a few minutes after power on Further calibration should not be necessary unless temperature variations occur Calibration can usually be performed with signals present at the channel external and clock inputs However if the calibration is found to be unreliable as shown by a calibration failure status it may be necessary to remove such signals Trigger Time Calibration The trigger position is dynamically calibrated each time the sample rate changes from 4GS s to 2GS s or less or back to 4GS s when the module is configured as a single channel module The trigger position is also dynamically calibrated each time the sample rate changes from 2GS s to 1GS s or less or back to 2GS s when the module is configured as a single channel module Electrical Environmental and Physical Specifications Agilent U1084A Digitizer with averager Electrical Power Consumption CURRENT REQUIREMENTS A Model W 12 V 3 3 V ae Maximum Typical GS Sa The Maximum Power Consumption has been increased by 10 over the value calculated with the current
17. available for Acquisition readout Idle Sequence of Accumulation Idle Tst Tacat Blue indicates a variable time interval while black denotes a fixed time interval Agilent U1084A Digitizer with averager 37 3 38 Product Description It should be noted that the normal Sequence Average mode is not at all like the Sequence Acquisition Mode of other Acqiris digitizers The data associated with successive triggers is summed in a segment until the desired depth N cc is attained The next trigger initiates the sum of the following segment Round robin sequence acquisition is not available To complement the Sequence Average mode the digitizer can also measure and store the times when the first trigger of each segment occurred Readout of the time stamps allows the determination of the time from the beginning of one Average to that of any other Average in the sequential acquisition Timing measurements between these trigger events are possible with a resolution of 8 ns at the maximum sampling rate and 16 ns otherwise The digitizer can also store the state of 3bits at the time of the first trigger of each segment of each acquisition These bits which will be called hardware markers are those of logic signals at the MCX 1 0 A MCX 1 0 B and MCX 1 0 C inputs See section Front Panel Inputs and Controls Agilent U1084A Digitizer with averager Product Description 3 SAR Sequence Average Mode In order to maximize the measurmen
18. computing circuit performs the retrieve add and store functions necessary to accumulate the signal at the maximum sampling rate At the highest sampling rate summed events can be acquired with less than 1 8 us dead time between them For example multiple acquisitions made at 4 GS s sampling rate and containing 400 KSamples can be summed at sustained rates of up to 9800 shots per second If 100 KSample records are used the sustained summing rate can reach 37 300 shots per second Once a sum is accumulated to the desired depth a number of events selectable from one to 16 777 216 224 the signal is read out over the PCle bus and the division function necessary to obtain the average is performed inside the PC if desired Double Buffer Acumulation The two accumulation memory buffers allow accumulation to continue in one buffer while the PCle read out of a completed accumulation is under way This helps to optimize the measurment throughput Sequence Average Modes In time resolved applications where multiple averaged waveforms must be acquired with very low dead time the user can partition the averaging memory to store from 1 to 131072 separate accumulations of summed data In standard segment accumulation mode the user selects the desired number of triggers per segment N The next segment will be started after the previous N triggers have been processed For the single channel mode the length of each segment is adjustable from 512 samp
19. environment Note AcgirisMAQS is an alternate software application offering many interesting possibilities for the control of acquisition systems in a single or multi machine environment Ask your sales representative or Agilent for more information For information necessary for writing your own software to control Acqiris products you should refer to the Programmer s Guide and the Programmer s Reference Manual pg Agilent Technologies 1 10 Introduction Conventions Used in This Manual The following conventions are used in this manual Denotes a note which alerts you to important information Italic text denotes a warning caution or note Bold Italic text Is used to emphasize an Important point in the text or a note mono text is used for sections of code programming examples and operating system commands B KB MB GB is for Byte KiloByte 1024 bytes MegaByte 1024 1024 bytes GigaByte 1024 1024 1024 bytes Disclaimer and Safety CAUTION The U1084A modules have been designed to operate in a standard PClExpress slot found inside most personal computers Power for the modules is provided by plugging them into a free slot refer to the installation procedure Do not exceed the maximum input voltage rating The maximum input voltage for 50 W input impedance is 5 V Warning Regarding Medical Use The U1084A modules are not designed with components and testing procedures that would ensure a level of r
20. generated for external use It is always available on the Front Panel Trigger Out MCX connector 29 3 30 Product Description The External Trigger Output functionality is implemented in the hardware No Trigger Out signal occurs for software generated triggers such as those of the AUTO mode of AcqirisLive or through the use of the function AcqrsD1 forcelrigger Normally the trigger output signal occurs when the module is ready to be triggered and a valid trigger signal occurs As an aid in applications where a complete system has to be warmed up before use the digitizer can be put into a mode TrigAlways in which triggers received when the digitizer is not in use are passed through and used to generate a trigger output This mode is controlled using the function AcqrsD1_configAvgConfig Trigger Output Block diagram Signal 1 6V swing Ov centered SER Trigger Out Offset 2 5 V The output swing is 1 6 V 0 8 V when unloaded and 0 8 V when terminated on 50 Q The rise and fall times are 2 5 ns typical The offset can be adjusted by software control in the range 2 5 V 2 5 V unloaded or 1 25 V 1 25 V into 50 Q2 The maximum output current capability is 15 mA As the output is retro terminated it is possible to drive a 50 Q line unterminated HiZ without loss of performance For a TTL compatible signal set the offset to 1 0 V and the swing at destination will be 0 2 to 1 8 V For an ECL compat
21. installation of Acqiris software on Windows systems Similarly the ReadMeLinux file gives the list of files corresponding to that installation 21 2 Installation 22 Agilent U1084A Digitizer Overview Agilent U1084A Digitizer with averager User Manual Agilent Acqiris U1084A Digitizer with On board Processing 3 Product Description Acqiris Digitizers are designed to provide superior measurement precision and accuracy Key acquisition specifications such as DC accuracy integral and differential non linearity have been optimized to deliver maximum measurement fidelity Careful circuit layout custom IC s and special packaging techniques have all been employed to reduce the overall random and correlated system noise The use of custom IC s also dramatically reduces the total number of discrete components required This has tremendous benefits on reliability and also allows the modules to use a minimal amount of power The U1084A series Digitizers are PCI Express modules that plug directly into any vacant long PCle slot in a PC They are fully programmable over the PCle bus and deliver 4 GS real time averaging performance Signals on 2 channels with an Analog bandwidth limit at 1 5 GHz Typical 1 8 GHz can be analyzed simultaneously at sampling rates up to 2 GS s Averaged Data can be transferred to a host processor over the PCle bus at speeds up to 520Mbytes s For complete technical specifications concerning your particular digit
22. low level will be in the range 0 V 0 7 V and the high level in the range 1 7 V 3 3 V for HiZ The high level output will typically give 0 8 V into 50 Q The Acquisition Active and Analyzer Armed signals can be observed on any of the 1 0 A B or C MCX connectors when appropriately configured The Enable Acquisition or Start Veto signals can be sent in to the module by the same route To ensure proper operation of the segment recording of hardware markers the logical state of MCX 1 0 A MCX 1 0 B and MCX 1 0 C inputs the input must be stable for a time interval starting 30 ns before the trigger and continuing until 30 ns after it This implies that the HF Reject trigger coupling should not be used If the individual inputs are not in the disable state the corresponding bits will be useless The TRIGOUT Signal occurs after an accepted TRIGGER It can be chosen to be either synchronous to the Trigger IN or synchronous to the acquisition Clock and in this case can be used to trigger events synchronously to the acquisition clock Internal Calibration The software drivers supplied include calibration functions for the timing gain and offset settings which can be executed upon user request The digitizers are never calibrated in an automatic way i e as a side effect of another operation This ensures programmers have full control of all calibrations performed through software in order to maintain proper event synchronization within
23. on the segment selection control under the Memory section of the control window and start the acquisition Display Features Zoom and Persistence A waveform zoom feature is available under the View menu of the display window The screen image below shows the normal display and the zoom window that appears when zoom is selected The zoom scale and center position are modified using the horizontal and vertical controls shown on the zoom display window To the right side of the zoom window click on the Horizontal button then modify the zoom expansion factor by clicking the In or Out buttons Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 The vertical blue cursor or box depending on the zoom factor shown on the main display window indicates the center point and range of the zoom The vertical box or line can be dragged right or left with the mouse in order to re position the center point of the waveform displayed in the zoom display window Alternatively the right and left arrows at the bottom of the zoom display window will reposition the horizontal center of the zoom In order to expand the zoom region vertically select the Vertical button on the zoom display and click the In Out buttons Alternatively the up down arrows on the scale indicator just below the vertical View Zoom 1 00 GS s Zoomed Wavefo
24. ones in case of doubt examine your invoice It is recommended that yearly calibration be made in order to verify product performance All repairs replacement and spare parts are warranted for a period of 3 months Warranty extensions are available as an option Agilent endeavors to provide leading edge technology that includes the latest concepts in hardware and software design As such software and firmware used with the products is under continual refinement and improvement All software and instrument firmware is supplied as is with no warranty of any kind Software and firmware is thoroughly tested and thought to be functional at the time of shipment At Agilent s discretion software and firmware may be revised if a significant operational malfunction is detected In exercising this warranty Agilent will repair or replace any product returned to the Agilent service center within the warranty period The warranty covers all defects that are a result of workmanship or materials This excludes defects that are caused by accident misuse neglect or abnormal operation The purchaser is responsible for returning the goods to the nearest Agilent service center This includes transportation costs and insurance Agilent will return all warranty repairs with transportation prepaid Warranty and Repair Return Procedure Assistance and Support Agilent acquired Acqiris SA and its product lines in December 2006 Please contact your neares
25. reduced to just 200 MS s 20 000 100 us to record the same 100 us period All frequencies above 100 MHz would then be incorrectly digitized and important signal characteristics may be distorted or even completely missed Trigger Overview Before the digitizer starts acquiring signals it must be armed and in a ready state Arming the module is done by software ACQUIRE command The digitizer will then wait for a trigger to start an acquisition see the timing diagram below When the AcqrsD1_acquire command Is executed the module will receive the command after a time Fst which may vary between 50 us and even more than 100 ms depending on the processor and the operating system used The module will be ready to acquire after the optional hardware Enable Acquisition delay Tenacg and fixed delay Tanarm The Acquisition Armed signal is then driven active and is optionally available on the front panel 1 0 MCX connector It is normally used to enable external events such as laser firings Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Product Description 3 These external events in turn can produce signals that can be used to generate the triggers for the digitizer The trigger input pulse can have a delay Ttrig that can vary from zero to as long as required When the trigger is received the digitizer generates a trigger output and starts the acquisition after a predetermined StartDelay StartDelay is adjusta
26. section of the README file Installing the Hardware CAUTION CAUTION Agilent U1084A Digitizer Turn off the power of the PC For PCle modules the PC may have to be unplugged to ensure that the PCle bus has no power available Touch the antistatic package to a grounded object before removing the card from the package Electrostatic discharge can damage the card Open the PC identify a free PCI PCle slot and carefully insert the card into it Be sure to ground yourself by touching the grounded PC frame and avoid touching any components on the card Make sure that the grounding of the card s mounting bracket to the back panel rail of the computer is done correctly If present make sure that the fan s adjustable retainer is correctly positioned and tightened for mechanical support Close the PC Turn on the power of the PC and start the operating system Agilent Acqiris modules are equipped with a LED If this LED is not glowing orange or red when the power Is applied there is a severe problem Either the module is broken or the necessary voltages for its use are not available On Windows if devices were installed using a previous version of Acqiris software the instruments in these logical positions may still appear as Unknown Devices In that case you should uninstall and reinstall the devices Instructions on this procedure can be found in the ReadMe txt file in the manuals folder of your Agilent Acgiris software installation
27. should e create the folder firmware in the NI RT system directory using the file transfer application e select the FPGA files from lt AcqirisDxRoot gt Firmware you want to copy to the target and upload them into the firmware directory Restart the target after finishing the file transfers Restart the NI MAX application and you should have Agilent Acqiris instruments detected in your PXI system Agilent U1084A Digitizer Installation 2 Installing the IVI COM C Driver Please install Agilent Acqiris software for Windows first Then the Agilent Acg r s Software CD Autorun program gives access to two installers IVI Shared Components 1 4 IVI COM C IviAgD1 driver These must be installed in the order shown above For more information you can then consult the Readme txt file in the IVI Drivers lviAqD1 folder or the documentation through the program shortcut present under Ivi IviAgDI1 Uninstalling devices under Windows In the Device Manager select the instrument to be uninstalled Choose Uninstall from the Action menu After all desired instruments have been uninstalled select Scan for hardware changes from the Action menu or reboot the computer Note that only those devices that are actually physically present are visible in the Device Manager Distribution for Windows 2000 XP Vista 7 32 64 and Linux Agilent U1084A Digitizer The manuals ReadMe txt file contains a list of files to be found after a complete
28. the Threshold Value of interest Baseline SampleValue Baseline V Threshold V Similarly if the signal of interest is negative going and the data of interest lie below a threshold data inversion can be enabled and the application of the same recipe gives the same result for the following input x 255 data base i data lt 255 threshold lt V gt 1 N Was V Vin resh and where base Vupper edge of range Vbase FS 296 and threshold Vupper edge of range Vthresh FS 296 Note that Vpase can be above Vupper edge of range If So desired The result of this is that the summed or averaged data always shows positive peaks In order to ensure that the threshold can be applied and that the values contributing to the sum are always positive and because the base value is stored as a signed 8 bit number it is required that For positive going signals data above a threshold 0 lt threshold lt 255 or equivalently FS 2 Offset lt Vipresh lt FS 2 Offset threshold gt base or equivalently Vihresh E Vhase and 128 lt base lt 127 or equivalently FS Offset lt Mesa lt Offset For negative going signals data below a threshold 0 lt threshold lt 255 or equivalently 42 Agilent U1084A Digitizer with averager Product Description 3 FS 2 Offset lt Vinresn lt FS 2 Offset threshold gt base or equivalently Vihresh Vhase and
29. the indicated conditions are fully understood and met A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly per formed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated condi tions are fully understood and met Introducing the Agilent U1084A Digitizer Agilent U1084A Digitizer Congratulations on having purchased a data conversion product The Agilent Technologies U1084A digitizer are highly versatile high speed data conversion modules designed for capturing high frequency electronic signals To get the most out of these products we recommend that you carefully read this manual carefully We trust that the product you have purchased as well as the accompanying software will meet with your expectations and provide you with a high quality solution for your data conversion applications You can download the latest version of this manual from http www agilent com by clicking on Manuals in the Technical Support section and then entering a model number You can also visit our web site at http www agilent com find acgiris At Agilent we appreciate and encourage customer input If you have a suggestion related to the content of this manual or the presentation of information please contact your local Agilent Acqiris product line representative or the dedicated Agilent Acqiris Technical Support A
30. the status of the acquisition and of writing the data to disk The Autostore function can be aborted from the progress bar Raw ADC values are the raw 8 bit ADC levels in ASCII format The channel s gain and offset are needed in order to obtain the signal level in Volts The required information to convert the Raw ADC values to voltage is included in the header information of each Raw ADC ASCII file or in the awh file accompanying the binary files In order to convert the Raw ADC values into Volts the following formula should be used V vGain data vOffset for Digitizer mode data V vGain data NumberOfWaveforms 128 vOffset for Averager mode data V vGain 127 data NumberOfWaveforms vOffset for Inverted Averager mode data V vGain data NumberOfWaveforms for real time Add Subtract mode The Amplitudes V selection stores the waveforms as voltage samples in ASCII format This data has already been adjusted for gain and offset and can be directly read out as a voltage However it requires roughly twice as much space as Raw ADC value data Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 For the sequential acquisition mode the segment time stamps are also stored when waveforms are saved using the Autostore and Save Waveform functions Data stored in binary format with Autostore must be converted before it can be imported into a source folder Fea Data Format Conve
31. to store accumulations of summed data The number of waveforms in the accumulation is identical for all segments The number of segments Ss cc can be chosen from 1 to 131072 When a sequence average is acquired the series of events shown in the diagram below takes place After a software Start command beginning of accumulation can be delayed with external input control The trigger starts the acquisition until the number of programmed triggers Nic IS attained for each segment The module needs as many triggers as defined by the sequence setting Mes Ssucc The U1084A will accumulate the successive acquisitions for each segment and then stops Sequence of Accumulation Greta Oeste Tst Depending on operating system processor and processor activity the software command q ed will take at least 50 us and perhaps even more than 100 ms to reach the hardware Must be gt 0s EE Enable Acquisition When this external control is selected it will Ox In 1 act only for the first segment accumulation StartVeto When this external control is selected it will I Ox In 15 act only for the first segment accumulation Acquisition Active Ox Out 21 Analyzer Armed Ox Out 31 End of Acquisition Interrupt Front Panel Must be gt 0 s gt lt Must be gt 0s lt A Time Stamp 1 A Time Stamp 2 LED color readout Software Stat Data
32. to obtain reasonable performance from your averager Processor 500 MHz Pentium higher recommended Some PowerPC systems running Wind River VxWorks are supported please contact us for details Memory 256 MB RAM The previous number is a very rough estimate Assuming that you are using AcqirisLive or an application of your own that operates on the acquired data it seems reasonable to ask for 10 times the total acquisition memory that you will be using at the same time in the application Performance is likely to be degraded if less memory is avallable Display resolution At least 1024 x 768 pixels and 256 colors for use of AcqirisLive or Demo applications Operating System Microsoft Windows Vista Vista 64 bit 7 7 64 bit 2000 XP including 2003 Server Wind River VxWorks 5 5 1 and 6 4 and Linux with kernels 2 4 and 2 6 Users with previous Windows OS versions i e NT4 can download AcqirisSoftware 3 1 from the Agilent WEB site Windows 2000 will not be supported in future releases Wind River VxWorks 5 5 1 will not be supported in future releases 13 1 14 Introduction Hard Drive Space 300 MB for the Complete installation CD Drive or any method to copy the software installation files from CD to the hard drive such as LAN floppy drive etc LabVIEW Full driver implementations are available for National Instruments LabVIEW versions 8 5 8 2 1 and 8 0 LabVIEW 7 1 is frozen at the level of Acqiris Software 3 2
33. used to allow fast and stable acquisitions Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Product Description 3 Improved Timing In order to preserve the timing accuracy of successively summed acquisitions U1084A Digitizers include a precise real time measure of the trigger position relative to the sampling clock In Non Resync mode the jitter trigger positioning with respect to the clock from acquisition to acquisition is as low as one half clock cycle 125ps 4GS s For systems tha can be externally triggered the clock synchronized trigger output signal synchronized with the internal clock to less than 60ps can be available on the front panel MCX Better Accuracy Vertical resolution can also be improved with a special dithering circuit that can increase the dynamic range from 8 to 12 bits when averaging more than 256 spectra Dithering a signal involves the addition of a small systematic pseudo random amount of DC offset to the acquired signal The dithering range is user programmable within 12 ADC LSB s Dithering improves measurement resolution and can dramatically reduce the errors associated with ADC effects such as differential non linearity Fast Averaging The U1084A systems have two 32 bit 32 MSample accumulation memory buffers channel The accumulation memory is updated in real time and contains the current summed converted data from the digitizer A high speed on board
34. with strong nylon adhesive tape 5 Mark the shipping container FRAGILE HANDLE WITH CARE to help ensure careful handling 6 Use the address obtained from your Agilent Technologies Service Center 7 Retain copies of all shipping papers CAUTION Notes If the original packaging materials are not available use a professional packaging service Contact your Agilent Service Center for more information e The shipping container must be large and strong enough to accommodate your instrument and allow at least 3 to 4 inches 8 to 10 cm on all sides for packing material Damage can result if the original packaging materials are not used Packaging materials should be anti static and cushion the instrument on all sides NEVER USE STYRENE PELLETS IN ANY SHAPE AS PACKAGING MATERIALS They do not adequately cushion the instrument or prevent it from moving in the shipping container Styrene pellets can also cause equipment damage by generating static electricity or by lodging in fan motors Maintenance The cards do not require any maintenance There are no user serviceable parts inside A periodic calibration can be obtained on request Agilent U1084A Digitizer with averager 15 1 1 Introduction Cleaning Cleaning procedures consist only of exterior cleaning Clean the exterior surfaces of the module with a dry lint free cloth or a soft bristle brush If any dirt remains wipe with a cloth moistened in a mild
35. 2 V when using an FS Input Voltage setting of 500 mV or below increasing to 5 V for FS settings above 500 mV 27 3 28 Product Description Trigger Vertical Resolution The U1084A Digitizer uses an ADC system with 8 bits of vertical resolution 256 levels The dynamic range of the ADC covers the Full Scale FS of the Input Voltage setting For example if the Input Voltage is set to 500 mV then the ADC resolution is equivalent to 1 95 mV To obtain the best dynamic range from the ADC care should be taken to ensure that the input signal varies over more than 50 of the Input Voltage Full Scale FS setting The highest and lowest levels of the ADC correspond to underflow and overflow conditions For the Averaging mode any sums that contain such data are subject to unknown errors For the Averaging mode vertical resolution increases as the number of acquisitions per average increases lt can be improved to up to 12 bits when averaging 256 or more traces DC Accuracy The U1084A Digitizer uses low noise front end electronics in order to ensure voltage measurement is made with accuracy and precision DC voltage accuracy is better than 2 1 typical of the input voltage full scale Linearity and Dithering For raw ADC values the differential linearity is better than 0 9 LSB In the Averaging mode an offset dither of up to 12 ADC codes can be added to the input signal This dithering improves the Accumulation s differe
36. A Digitizer with averager User Manual Agilent Acgiris U1084A Digitizer with On board Processing es gez 1 70 Introduction Using this Manual This guide assumes you are familiar with the operation of a personal computer PC running a Windows 2000 XP Vista 7 32 64 or other supported operating system It also assumes you have a basic understanding of the principles of data acquisition using either a waveform digitizer or a digital oscilloscope The manual is divided into 4 separate sections To understand the elements of operation for the module it is essential that you read them all Chapter 1 Chapter 2 Chapter 3 Chapter 4 Introduction describes what to do when you first receive your new Acqiris product Special attention should be paid to sections on safety packaging and product handling Before installing your product please ensure that your system configuration matches or exceeds the requirements specified Installation covers all elements of installation and performance verification Before attempting to use your Acqiris product for actual measurements we strongly recommend that you read all sections of this chapter Product Description provides a full description of all the functional elements of the digitizer Getting Started with AcqirisLive describes the operation of AcqirisLive an application that enables basic operation of Acqiris Digitizers and Averagers in a Windows 2000 XP Vista 7 32 64
37. Agilent U1084A Digitizer with On board Processing Averager User Manual Agilent Acqiris U1084A June 2 2010 Release 1 1 U1092 90031 eh Agilent Technologies Notices Agilent Technologies Inc 2010 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or transla tion into a foreign language without prior agreement and written consent from Agi lent Technologies Inc as governed by United States and international copyright laws Manual Part Number U1092 90031 Edition Edition June 2 2010 Printed in USA Agilent Technologies Inc 1400 Fountaingrove Pkwy Santa Rosa CA 95403 Warranty The material contained in this docu ment is provided as is and is sub Ject to being changed without notice in future editions Further to the max imum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a par ticular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or perfor mance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with
38. COIRIS_SUPPORT agilent com For further information please call Acqiris Product Line Information USA 800 829 4444 As a Pacific 61 3 9210 2890 Europe 41 22 884 32 90 Agilent U1084A Digitizer 1 Introduction Using this Manual 9 Conventions Used in This Manual 10 Disclaimer and Safety 10 Warning Regarding Medical Use 10 Packaging and Handling 11 Warranty 12 Warranty and Repair Return Procedure Assistance and Support 12 System Requirements 13 Transport amp Shipping 14 Maintenance 15 Cleaning 16 Disposal and Recycling 16 2 Installation Installing the Software under Windows 17 Warnings 17 Multiple Versions 18 Installation 18 Installing the Software for Linux 19 Installing the Hardware 19 After Restarting 20 Windows 20 LabVIEWRT 20 Installing the IVI COM C Driver 21 Uninstalling devices under Windows 21 Distribution for Windows 2000 XP Vista 7 32 64 and Linux 21 3 Product Description Overview 23 Channel Input 26 Coupling amp Impedance 26 Input Protection 27 Mezzanine Front end 27 Bandwidth and Rise Time 27 Input Voltage and Offset 27 Vertical Resolution 28 DC Accuracy 28 Linearity and Dithering 28 Trigger 28 Trigger Source 28 Trigger Coupling 29 Trigger Level 29 Trigger Slope 29 External Trigger Output 29 Trigger Status 31 Data Acquisition Common 31 Agilent U1084A Digitizer Timing 31 Sampling Rate 31 Data Acquisition Digitizer Mode 31 Acquisition Memory and Tim
39. DC271 Ch1 is the currently selected channel The channel list image at the right shows the same system with the DC271 Ch2 selected as the current channel The other indicators are transparent and therefore their channels are turned off and not displayed As an alternative to controlling the channels to be displayed from the control panel you can also control them by selecting the desired channels from the list of channel gains shown at the right hand side of the display window dz Pressing the Finder button at the top of the Instrument Setup Store Options Help ij BU rss EZE control panel will identify the module associated with the current channel When the finder button is depressed the LED on the DC270 Chi LOE 270 CH TY OG 80 EEE Tr front panel lights up yellow on the digitizer module with the current channel Top Line Menu of AcqirisLive The top line menu contains Instrument Control AE functions offering additional utility Instrument Setup Store Options Help to the AcqirisLive application Provisions are included for storing instrument setups waveforms Agilent U1084A Digitizer with averager 59 4 Running the AcqirisLive Application converting the format of stored data files identifying models and versions and in the Options Menu calibrating the digitizer extended control of event acquisition and controlling the display properties These possibilities are discussed in the next f
40. ampling Edy Se Sampling dy MAX 50000 50 0 K samples Interval e 4ns in b 250 MSis vos E 4ns 250 MSIS 1 1 00 segments EZ i Memary Memory Sampling Interval Rate dena 8 11 K samples BE 4 86 K samples Sere Ge 1 00 segments EZ 1 f 1 00 segments ma Acquisition Agilent U1084A Digitizer with averager Acquisition re AUTO NORMAL sinte stor STOP Acquisition AUTO NORMAL SINGLE Numeric Editor UA I erre f The numeric editor is shown in the control window at locations where numeric values are set The Acqiris Numeric Editor enables easy input of numeric values particularly those ranging over many decades The numeric value can be changed in multiple ways A number can be typed directly into the white number display area or alternatively the Acqiris Numeric Editor may be used In order to use the Acqiris Numeric Editor click on the green numeric editor icon at the left of the number display A numeric editor control will appear as shown The methods to change the values are 1 Incrementor decrement any digit with the arrow buttons by pressing the increment or decrement button When the button ts Trigger Delay 7 Mouse sensitivi re I Move pointer over digitto be changed Aad AAAAAGAA 4 increase range 200 0000000 ns Gerd chini dE Arrows increment or decrement the digit 51 4 Running the AcgirisLive Application held down the digit wi
41. aptures another acquisition of the same type Normal mode is used to continuously acquire averages or waveforms into memory for valid trigger events The display is updated with the new acquisitions in accordance with the Display Refresh Rate setting under the Options menu on the top line of the AcqirisLive Control window Acquisitions will happen for each valid trigger until either single or Stop is pressed If the trigger indicator at the lower left of the waveform display does not blink green the digitizer is not receiving valid triggers Check the trigger settings or for instruments in the digitizer class select Auto mode in order to obtain a display of the waveform Auto mode for instruments in the digitizer class only will acquire and display waveforms according to the trigger settings if a valid trigger is present within a timeout interval If a valid trigger is not available within this interval the digitizer generates its own trigger in order to digitize and display whatever signal is at the Input at that time If valid triggers are received at a high enough rate Auto mode behavior differs little from normal mode behavior on the display However if the trigger rate is too low or trigger settings are not appropriate for the characteristics of the signal the input signal will not be stable on the display This occurs because the internal auto trigger generated by the digitizer is asynchronous to the input signal Auto mode is
42. averager Running the AcqirisLive Application 4 External 10 MHz Reference and External Clock Either one of the External 10 MHz Reference or External Clock options can be selected in the Options Menu The external input threshold option avallable in the options menu must also be set appropriately The External Clock function is available in AcgirisLive only when using the control panel in Transient Recorder Mode The input frequency should be keyed into the clock frequency selector outlined in red on the control panel Then the appropriate sampling frequency must be selected in order for the proper timebase to be displayed on the waveform display window The time window displayed can be manipulated by allocating more or less memory to the acquisition The External 10 MHz Reference in AcqirisLive is designed to work either in Oscilloscope Mode or in Transient Recorder Mode The timebase and sample rate for waveform capture is fully selectable when using the external reference just as it is when using the digitizer s own internal reference clock Additional Waveform Information The Options menu also includes BIZIEZ possibilities to obtain additional Tr information about the waveform In both u E cases described below the display will be updated after each acquisition Average StdDev The Show Segment Timestamps option for the digitizer instrument class shows a display like the one here
43. ber of samples the capture time window is adapted keeping the current sampling rate and number of segments Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 Digitizer Oscilloscope Digitizer TR Mode Averager TR Mode Mode Instrument Control Ed Instrument Setup Store Options Help fi Finder E Instrument Control E EA Instrument Setup Store Options Help Kinder E Instrument Control E i EA Instrument Setup Store Options Help GIE 27210 crate 10 pos 17 27210 crate 10 pos 17 Finder ES 27210 crate 10 pos 17 U1084A001 Ch1 Adv U10844001 Ch1 Adv UI 0844001 Chi Adv Input Voltage Scale Coupling Input Voltage Full Scale Coupling Input Voltage Full Scale Guz i Bui b AC DE Boni d AC DE ZE mV ac DE dance Impedance Impedance Input Voltage Offset Impe Input Voltage Offset Input Voltage Offset ea oor 0 00 Goa E ODT Goa E Er B Goo mD Trigger Trigger Edge clan Trigger Edge class Source U1084A001 Chi Ezer 1 Level 1 wd eti aloe DOE er me Sd Delay Slope Si b biza 0 008 DJ Timebase 2 usiDi e Edge class Source U1084A001 Chi Ezer Level 1 wd i gioco DOE er me Sd Source U1084A001 Chi Level 1 bri Coupling Hora DO E peu pc bn Delay Slope Si b Time Window ia 324480 6 32 4 Us eee Delay Stop Slope wi gi so GN Time Window GS 19 5 ps E Memory S
44. ble from its minimum as given in the table above in steps of the time of the memory increment value up to the maximum value given in the table above The digitizer can be used to limit the system s overall event rate A rate adjustment delay StopDelay can be programmed in steps from zero to the model maximum with the same range and resolution as StartDelay For maximum acquisition rates StopDelay should be set to zero 35 3 36 Product Description Single Average The data associated with successive triggers is summed in a segment until the desired depth N cc IS attained When a single average is acquired the series of events shown in the diagram below take place e After a software Start command beginning of accumulation can be delayed with external input control e The trigger starts the acquisition until the number of programmed triggers Noyce IS attained e The U1084A will accumulate the successive acquisitions in a single average and then stops Single Segment Accumulation of 3 waveforms Reali Avati Tst Depending on operating system processor and processor activity the software command q edi will take at least 50 us and perhaps even more than 100 ms to reach the hardware Tst Must be gt 0 s 4 gt Enable Acquisition Ox In 1 When this external control is selected the Analyzer acquisition state Tenacq machine will start only when the input signal is high or left open StartVeto
45. e Base Range Digitizer Mode 31 Pre and Post Trigger Delay Digitizer Mode 32 Single Acquisitions Digitizer Mode 33 Data Acquisition Averaging Mode 33 Averaging Mode 33 Time Base Range 33 Averaging Memory 34 Trigger Overview 34 Single Average 36 Sequence Average Mode 37 SAR Sequence Average Mode 39 Random and Synchronized Triggers 40 Noise Suppressed Accumulation 41 Pre Acquisition Triggers 43 External Clock and Reference 43 Front Panel Inputs and Controls 44 Internal Calibration 44 Trigger Time Calibration 45 Electrical Environmental and Physical Specifications 45 Electrical 45 Environmental and Physical 45 4 Running the AcqirisLive Application Getting Started with AcqirisLive 47 Control Panel and Functions 49 Choice of Instrument Class 49 Control Panel Mode 50 Keyboard shortcuts 52 Input Voltage Scale Offset and Coupling 52 Trigger 53 Acquisition Mode 54 Timebase and Memory 55 Segmented Memory 56 Display Features Zoom and Persistence 56 Using averagers digitizers of different models simultaneously 58 Displaying Multiple Traces 58 Top Line Menu of AcgirisLive 59 Setup 60 Store Autostore and Conversion of Waveforms 60 Calibrate 63 Averager settings 64 External 10 MHz Reference and External Clock 64 Additional Waveform Information 65 Display Features 66 CommandLine Switches 66 Agilent U1084A Digitizer 5 Appendix Fan Assembly 71 Agilent U1084A Digitizer Agilent U1084A Digitizer B Agilent U1084
46. e TTI resolution is 8 ps Data Acquisition Averaging Mode Model Channels Maximum Maximum Memory Sequence Start Delay length for Minimum Maximum Stop Delay Average Increment length Maximum Samples Samples Samples Samples Mode U1084A 4 GS s 524288 512 64 M 128 M brea ut atau U1084A 2 2 GS s 262144 256 32M 64 M bede ur i GE GE Averaging Mode In Averaging mode newly acquired waveforms are summed in real time with the corresponding samples of previous waveforms The corresponding samples are those with identical delay calculated from the beginning trigger time of the acquisition While the acquisition is running the previous sum is read from the averaging memory added to the incoming sample and written back to the averaging memory A high speed on board computing circuit performs the retrieve add and store functions necessary to average the signal in real time Real time averaging Is possible up to the maximum 4 GS s sampling rate In Averaging mode only post trigger data are acquired Each raw ADC datum is treated as a value in the range 0 255 which corresponds to the voltage range FS 2 Offset FS 2 Offset Time Base Range The Time Base Range defines the time period over which data is being acquired For example the U1084A in single channel mode has an averaging acquisition memory of 524288 S and maximum sampling rate of 4 GS s Thus at the maximum sampling rate the digitizer can rec
47. e and are selectable in the range of 0 to 10 timebase The value 10 timebase is equivalent to the time window or capture time 100 pre trigger is achieved by setting the Delay to capture time A 100 pre trigger delay means the trigger point is at the right edge of the display and all of the data in the acquired waveform were captured just prior to the trigger event Maximum Post trigger delay settings depend on the sample interval used Post trigger delays are adjustable up to 200 MS Averagers When the Averagers Instrument Class is selected the digitzer oriented Delay control of the rigger section is replaced by a more appropriate control This allows the independent control of the Start and Stop delays expressed in samples The Trigger time arrow is no longer displayed The choice of memory samples will be constrained by the requirement of it being a multiple of 256 or 512 samples as discussed in the chapter 3 section Data Acquisition Averaging Mode The Averager Settings window allows you to select the number of acquisitions needed to complete an average It also lets you choose the type of trigger synchronization and the dithering to be applied to the offset When a Slope box is shown next to the delay section selecting the trigger slope is achieved by depressing either the positive or negative slope buttons Alternatively the AP240 AP235 models allow Window or HF modes to be selected The Adv button in this section gives
48. ecked The total data buffer size is then limited to the available memory minus 10 of the total memory It is also possible to limit the total data buffer size to a fixed value with the bn option where n is the limit in MB e g b200 will limit the buffer to 200 MB The data buffer is then shared among the active channels When the total acquisition memory sum over all active channels exceeds the data buffer size limit readout of the data will be partial The special operation modes such as Segments Average Average Digital Filter and FFT are not supported with partial data readout Partial readout is controlled with the Very Long Memory panel menu Options gt Very Long Memory The first segment and the first sample to read out can be specified Note that if the buffer is large enough for at least 1 full segment only full segments will be read i e first sample control is ignored When saving data to file you will be prompted for a maximum number of segments per file Banks for SAR Some of the digitizers are capable of acquiring data and being read out simultaneously The Bn option allows the internal memory of the digitizer to be divided into n banks To observe the improved acquisition trigger rate achievable in this mode It is suggested to set up the desired conditions and then turn the event display off The trigger out signal can be used to monitor the trigger rate Calibration Before operation the instruments mu
49. eep but this can be overridden to allow better performance for other applications Note that this sleep policy is only in effect while the acquisition is running When the acquisition stops the sleep policy is always reset to the longest sleep period Acquisition Interrupts When performing acquisitions there are 2 possible ways to wait for the acquisition to complete polling or using a hardware interrupt p Polling AcqirisLive runs as a single thread process After an acquisition is started the instruments are regularly polled to check when the acquisition is complete The user interface is still alive but the latency for reading the data after the acquisition may vary 1 Hardware interrupt In this mode AcqirisLive is run as a multi thread process After starting an acquisition a new thread is created to wait for the hardware interrupt indicating that the acquisition completed This thread is put to sleep and wakes up upon reception of the interrupt from the instrument or after a 2 seconds timeout Please note that switching the DMA data transfer mode off precludes the use of acquisition interrupts The i switch will therefore be ignored when n is used Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 Transient Recorder Mode The application will start in the Transient Recorder Mode as opposed to the Oscilloscope Mode Simulation Mode Simulati
50. eliability suitable for use in treatment and diagnosis of humans Applications of these cards involving medical or clinical treatment can create a potential for accidental injury caused by product failure or by errors on the part of the user These cards are not intended to be a substitute for any form of established process or equipment used to monitor or safeguard human health and safety in medical treatment The modules discussed in this manual have not been designed for making direct measurements on the human body Users who connect an Agilent module to a human body do so at their own risk Agilent U1084A Digitizer with averager Packaging and Handling Agilent U1084A Digitizer with averager Introduction 1 Your Averager is shipped with the following components A compact disc in an Agilent Technologies paper CD envelope that includes D 10 product User Manuals in electronic form 8 bit Digitizers 10 bit Digitizers 12 bit Digitizers Averagers Analyzers Signal Analyzers Streamer Analyzers Time to Digital Converters 3 5 and 8 slot CompactPCl Crates and the 21 slot CompactPCI Crate 1 Programmer s Guide and 1 Programmer s Reference Manual device drivers with sample software for different operating systems environments and languages the Analyzer Demo application a demonstration program for the AC SC Analyzer products the AcqirisLive application a demonstration program for our digitizer and averager pr
51. epts pre and post trigger adjustments in increments of 16 samples By definition post trigger settings are a positive number and pre trigger settings are a negative number Thus it is only natural that the software drivers provided treat pre and post trigger delays as a single parameter in seconds that can vary between nbrSamples samplingInterval 100 pre trigger and maxPostTrigSamples samplingInterval max post trigger Since the Acqiris software drivers provide very accurate trigger position information upon waveform readout the accepted resolution of the user requested pre post trigger delay is much better than 16 samples For more details refer to the Programmer s Reference Manual Agilent U1084A Digitizer with averager Product Description 3 Single Acquisitions Digitizer Mode Digitizers acquire waveforms in association with triggers Each waveform is made of a series of measured voltage values sample points provided by the ADC at a uniform clock rate An acquisition consists of a waveform recorded with a single trigger The user selects the sampling rate and acquisition memory size The number of segments is always set to 1 The modules also include a built in Trigger Time Interpolator TTI that measures the time from the trigger point to the first sample point This information is essential for determining the precise relation between the trigger or other event of interest and the digitized samples of the signal Th
52. er 8 KS and maximum sampling rate of 2 GS s Thus at the maximum sampling rate the digitizer can record a signal over a time period of up to 4 us 8 KS 0 5 ns point The time base range can be adjusted by varying the amount of acquisition memory or the sampling rate of the digitizer Pre and Post Irigger Delay Digitizer Mode To increase trigger flexibility a pre or post trigger delay can be applied to the trigger position However pre trigger is not available in the Averaging mode The amount of pre trigger delay can be adjusted between 0 and 100 of the acquisition time window i e sampling interval x number of samples whereas the post trigger delay can be adjusted between 0 and 2 billion samples Pre or post trigger delays are just different aspects of the same trigger positioning parameter The condition of 100 pre trigger indicates that all data points are acquired prior to the trigger i e the trigger point is at the end of the acquired waveform The condition of 0 pre trigger which is identical to a post trigger of 0 indicates that all data points are acquired immediately after the trigger i e the trigger point is at the beginning of the acquired waveform The condition of a non zero post trigger delay indicates that the data points are acquired after the trigger occurs at a time that corresponds to the post trigger delay i e the trigger point is before the acquired waveform The digitizer hardware acc
53. ew sections Setup The Setup menu allows you to store and recover instrument configurations for digitizers It is not active for Averagers When you store a configuration the parameters used to configure each of the channels of each module together with the timebase and trigger configurations will be saved in a file You will be asked to choose the destination directory for the file and be allowed to give it an appropriate name When you choose to recover a file you will be asked to give the name or navigate to it using the browser functionality If you are using many modules the settings in the configuration file will be associated preferentially with the digitizer that has that serial number or then with the digitizer in the same location Only the parameters of the modules are stored in the configuration file This means that parameters of the AcqirisLive program such as channel activation and display mode choices are not included Store Autostore and Conversion of Waveforms The store menu gives you two mechanisms to store waveforms 1 The Store Waveform option allows you to store the last acquired waveform for the current channel To store the last acquired waveform for each of the active channels you must sequentially select each one to make it the current channel and use the Store Waveform menu command The title of the Store Waveform dialog indicates the name of the channel that will be stored The data is stored in ASCII format as
54. g the AcqirisLive Application 4 Gi Instrument Control E x 8 Waveform Display RE HS 27210 crate 10 pos 17 Finder 49 9976 Peri acgiris 500 rti pe Coupling Klo DO de d RE ey EN E Trig 3 5 6 7 9 250 MS s 2 00 us Div 5 00 Ks Timebase SE Sk Memory 50 0 K samples 1 00 segments fing Sampling Interval Rate 4 0000 ns 250 00 MS S Acquisition E NORMAL SINGLE STOP 16 10 42 buffer padding 56 samples Al 16 11 04 buffer padding 56 samples 16 11 10 buffer padding 56 samples a 16 11 18 buffer padding 56 samples I Control Panel and Functions Choice of Instrument Class U1084A Averager cards can be used either as such or as Digitizers To use it as an averager you must select the Averagers class from the Instrument menu This will slightly modify the appearance of the Instrument Control window and enable the Averager Settings and Logic Device Loading commands from the Options menu Please note that the Select Class command is only enabled when the Acquisition is stopped The transition will take a moment and when it is over only Averagers will be shown in the Instrument Control and an AVG icon will appear in the Waveform Display window Agilent U1084A Digitizer with averager 49 4 50 Running the AcqirisLive Application Control Panel Mode Ri In AcgirisLive there are two control panel modes available Oscilloscope Mode and Transient Recorder Mode The c
55. ge enables accurate measurement when offsets are present in the signal The Adv button in this section gives access to the choice of hardware bandwidth limits for the channel Trigger Trigger characteristics are set using the settings in the control panel Trigger section The trigger source setting can be either Internal trigger on any one of the input channels or External trigger on an external input The trigger source is indicated in the display by the name appearing under Source Trigger Edge pro a un Source U10644001 Chi E Chi In order to select the trigger source click the drop down source menu in the trigger Source section of the control panel and choose the desired one Notice that for most digitizer models when external trigger is selected the controls for the trigger termination 50 Q or 1 MQ are enabled in the Coupling section Select the desired termination for the external trigger The Coupling section also contains a selection for AC or DC coupling AC coupling on the trigger sets the trigger circuit to an AC Low Frequency Reject mode Use the Leve section to set the desired trigger level The relationship between coupling trigger source and trigger level was discussed in the chapter 3 section Trigger Level 53 4 54 Running the AcqirisLive Application Digitizers The trigger De ay setting positions the acquisition with respect to the trigger Pre trigger values are negativ
56. gers digitizers of different models simultaneously AcqirisLive features a single timebase i e the set of acquisition 47055 47905 47925 47946 47965 47985 4 8005 49025 46045 45065 48085 parameters pertaining to the time axis of the waveform such as the sampling rate and the number of samples It is therefore not possible to specify different timebase settings for different modules However it is possible to run each module at its maximum available sampling rate performance in the following way Select the Oscilloscope Mode In the channels list select a channel from the fastest module that will make that module the current module Make sure the maximum number of samples WAX samples in Memory panel is large enough Select the desired time per division setting timebase panel the fastest Sampling rate for the current module compatible with the maximum number of samples will be selected and applied to all modules in the system Any module not capable to satisfy that sampling rate will run at its closest setting Finally note that the sampling rate menu visible in Digitizer mode contains the sampling rate capability of all modules currently in use You must turn off the channels of slower modules in order to view the highest sampling rates of the faster modules Displaying Multiple Traces If multi channel modules or several single channel modules are installed on the PCI bus multiple waveform displays one from eac
57. h installed channel are overlaid on the display The current channel is selected by clicking on the channel name within the upper portion of the control panel The vertical settings of the current channel and the timebase and trigger of the correspondent digitizer are Agilent U1084A Digitizer with averager 1 50 0 rn 256 ADC hits per Division AF240 Running the AcqirisLive Application 4 then indicated A unique name is given to each channel installed on the PCI bus The current channel is indicated by a dark highlight over the name Settings changed on the main control panel will only affect the active channel Always verify proper acquisition setting for each channel prior to collecting data There is a small rectangular indicator button to the left of each channel name in the channel list If this indicator is black the channel waveform is active the channel is turned on and displayed in the display window Clicking on this indicator once turns it transparent This deactivates the reading of the data from the channel and clears the waveform display Clicking once again on the indicator turns the channel back on and the indicator black After making such changes the channel data will not be displayed until after the next acquisition The image at the left shows a channel list with four active channels in the system All are turned on and displayed in the display window as indicated by the black indicators at the left The
58. he trigger output is used to synchronously activate an event serving as the zero time reference for the time dependent phenomena that are measured in each accumulated waveform As an example the trigger output could activate the application of an electric or magnetic field to a sample under test This method ensures that the application of the field is identically synchronized to the sample clock for each shot contained within the average It also means that each sample in the accumulated sum is identically positioned shot to shot with respect to a fixed zero time reference provided that the time between the trigger output and the event waveform is kept constant The jitter i e the variation of the position of the trigger out signal with respect to the start of the acquisition as a function of sampling rate is shown in the table below Start of acquisition synchronization with respect to Trigger Output ample Rate SyncOnTrigOutSync Mode Non Resynchronized Mode a Single chanel Dual channel Single channel Dual channel Ko os rS zee See eae zee zere 250 MS s 60 ps 60 ps 250ps 500ps Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Product Description 3 Noise Suppressed Accumulation In some applications such as time of flight mass spectroscopy the signal is a rare event sitting on top of a noisy base line The averaging process will reduce the random noise However to enhance the Accumu
59. hoice of mode is entirely determined by the preference of the user Both modes provide the same set of functional capabilities but display the settings slightly differently For example in Transient Recorder Mode the user selects the Full Scale Range of the amplifier whereas in Oscilloscope Mode the user selects the input voltage scale set in Volts Div The desired mode is selected using one of the two buttons shown at the top of the control panel The distinction between the control panels for the two operating modes can be seen in the images below In both modes it is possible to set the memory depth and the sample speed independently within the limits of the maximum available memory However the two modes differ in the following way In Oscilloscope Mode the user selects the time window time per div and the sampling rate will be adjusted to the fastest possible within the limits of the available memory The maximum available memory is programmable In Transient Recorder Mode the user selects the capture time window the Sampling rate or the number of samples When selecting the capture time window the number of samples is adapted keeping the current sampling rate and number of segments up to the maximum available memory on the card When selecting the sampling rate the number of samples is adapted keeping the current capture time window and number of segments up to the maximum available memory on the card When selecting the num
60. ible signal terminated on 50 Q to 1 2 V set the offset to 1 2 V and the output will be in the range 0 8 V 1 6 V Alternatively to reduce the current drawn from the digitizer the terminations here can be used r TIL 220 Signal Trigger Out Heg Out With 20 Offset Offset lv Ze 1 18V GND Agilent U1084A Digitizer with averager Product Description 3 Trigger Status The front panel includes a tri color LED indicator to show the status of the trigger When the LED is green it indicates the trigger is armed and waiting for a valid trigger to occur Red indicates that the trigger has occurred the acquisition is complete and the data is waiting to be readout Data Acquisition Common The U1084A Digitizers can be used either for averaging or for normal digitizer data acquisition These two modes are quite different in their functioning After describing some common characteristics they will be treated individually in the sections below The digitizer mode is particularly useful when trying to configure a module for later use as an Averager Timing A crystal controlled time base is used to generate the clock of the digitizer Clock accuracy is better than 2 ppm and individual sample points are recorded with better than 10 ps lt 2 ps rms of sampling jitter Sampling Rate The U1084A Digitizers include an analog to digital converter ADC that can sample waveforms in real time at rates from 2 GS s
61. illed before the acquisition is complete the digitizer will reduce its sample rate as necessary This action differs from the same case in Transient Recorder Mode where preference is given to the selected sample interval In Transient Recorder Mode the digitizer will continue to allocate more memory with increasing capture times This is done in order to maintain the selected sample interval for as long a time window as is possible given the available memory When the card memory is fully utilized the sample rate will decrease with increasing capture times Segmented Memory Segmented memory enables the sequential acquisition mode having less than 800 ns dead time between segments This feature is particularly useful when capturing impulse response type waveforms in a variety of applications Segmented memory is available in all acquisition modes However it is generally used in either Normal or Single mode Waveform display occurs only after all segments are filled Segments can be displayed sequentially on the display or they can be overlaid on top of each other To select an overlaid display select the item Overlay Segments under the Options menu Segmented data can be archived to any storage device on the computer in a similar way to non segmented acquisitions If the acquisition needs to be stopped before all segments are filled press the Stop button Sk order to set up the sequential acquisition mode simply select more than 1 segment
62. izer please refer to the product s Specifications amp Characteristics In addition we maintain up to date versions of all product data sheets on our web site http www agilent com find acgiris The data sheets are available in pdf format and are best viewed using Adobe Acrobat software If you have trouble accessing our web site or viewing the data sheets please contact vour nearest sales office Ge Agilent Technologies E 3 24 Product Description Key features High Speed and Precision All Digitizers models provide both an ultra fast real time summing capability and exceptionally high data transfer rates to the host processor The two channel U1084A delivers a real time sampling rate of up to 2 GS s with 1 5 GHz of analog bandwidth simultaneously on both channels Alternatively it can be used as a one channel instruments with double the sampling rate The high sampling rate is achieved in real time for each trigger and does not require the use of interleaved sampling techniques Compared to real time sampling interleaved techniques significantly slow down averaging speeds and reduce the total data throughput Signal conditioning The U1084A models include all the required input signal conditioning such as gain from 50 mV to 5 V Full Scale offset adjustment and 50 DC coupling The inputs are fully protected and calibration is a built in feature A crystal controlled time base and advanced trigger circuits are
63. lation s ability to detect such signals in the presence of synchronous noise the digitizer allows the user to set a threshold that has to be exceeded for each data value to be entered into the sum The threshold should be set above the level of the noise synchronous and asynchronous Furthermore as an aid to the user or in order to avoid overflow in the summed data a fixed number the NoiseBase can be subtracted from each data value before the summation is done Both of these values are specified as absolute voltages Vipresh and Vpase Which are converted into their ADC code equivalent values base and threshold This is shown in the following picture O Sample above the Threshold i e i Value of interest SampleValue Baseline X Sample below the Threshold D D A Threshold V P Na gf Na e aa Earra ENN ZN b Baseline V X Baseline V Thus for each trigger and in each time bin if the data value exceeds the threshold then the threshold minus the base value will be added to the SUM S c EO data base i data gt threshold lt V gt 1 N V Vpase V SKA resh and where N is the total number of acquisitions and where base Vpase Viower edge of range FS 206 and threshold Vihresh I Viower edge of range FS 206 Note that Vpase can be below Vower edge of range If So desired 41 3 Product Description O Sample below the Threshold Inverted sig nal Sample above
64. les up to 512K samples in steps of 512 points while in the dual channel mode it is adjustable from 256 samples to256K samples in steps of 256 samples 25 3 Product Description Channel Input Numerous front panel control signals In order to ease the integration and synchronization of the Digitizer in a large variety of systems a number of signals are made available on MCX connectors on the instruments front panel The following high speed timing signals are available Inputs for Clock Reference Clock and Accumulation Start Enable Outputs for Trigger Trigger Ready Acquisition state and Reference Clock High Data Throughput The U1084A Digitizier can easily be integrated into any standard computer with 1 free long PCle x4 slot minimum can also be inserted in a x8 or a x16 slot that provides the 3 3 V and 12 V supply voltages at adequate power as required by the card Averaged signals can be transferred in DMA mode directly to the processor over the PCle bus at rates of up to 520 Mbytes per second 3 9 ms for a 500 KS record including DMA setup time overhead Noise Suppressed Accumulation The Digitizer provide a noise suppression feature which makes it possible for the U1084A cards to enhance rarely occurring events which under most circumstances disappear in signals with base line noise Only data points that exceed a user defined threshold are added to the result This considerably reduces the noise contributio
65. ll continue to increment or decrement automatically 2 Click on a digit and drag the mouse up or down to increase or decrease the value 3 Type a new value with the keyboard for any highlighted digit The value is constrained to fall within its allowed range whenever the user attempts to enter a larger or smaller value Digits that are below the resolution or granularity cannot be modified A message is displayed in the numeric setting control window when the pointer Is positioned over a digit that is below the allowed granularity and cannot be changed Keyboard shortcuts Two shortcuts have been defined to simplify applying changes of a parameter to a group of channels When the mouse Is over the control of a channel parameter e s can be used to set the current value to all channels of all available instruments e c can be used to set the current value to all channels of the current instrument Other shortcuts are Ctrl S as a synonym for Save Setup Ctrl R as a synonym for Recall Setup Ctrl C as a synonym for Calibrate all active instruments e Ctrl E functions as a toggle between Internal Clock and External Clock operation Input Voltage Scale Offset and Coupling IDEA ADD Chi Settings for input voltage scale offset coupling and impedance are available in the portion of the control panel shown to the right The selected channel is shown on the iiiz IZO goav JAS
66. n and the signal to noise ratio is enhanced Furthermore the NSA mode implements a fixed base line subtraction feature that is applied to the data values that are over the threshold This can be used to greatly reduce the occurrence of data overflows Therefore many more events can be accumulated before running the risk of data overflow The principle characteristics of the input channels are given in the table below Agilent Bandwidth Minimum BWLimiter Maximum Full Maximum Other Model into 50 Q Rise Time selections Scale Offset particularities GETE BUT 26 Coupling amp Impedance The U1084A is a two channel module with the choice of BNC or SMA connectors The 50 Q coupling offers high quality termination with better than 1 precision and is ideally suited for use with 50 Q transmission lines The U1084A provides DC coupling and AC coupling with a 32 Hz cutoff frequency Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Product Description 3 Input Protection The input amplifiers are fully protected against overvoltage signals The device is built to tolerate the following without damage to the front end electronics e 1IEC61000 4 2 ESD 15 KV air contact IEC61000 4 4 EPT 40 A 5 50 ns e IEC61000 4 5 surge 5 A 8 20 us For extreme cases such as detector sparking an external coaxial spark gap and attenuator can be supplied on request See TBD Mezzanine Front end
67. ntial and integral non linearity and can reduce quantization non linearity errors for low noise signals The dithering range is selectable and has a resolution of of the ADC Least Significant Bit LSB The dithering is added as a controlled offset at the input of the ADC The offset amount is different for each successive acquisition of a waveform The offset sequence is 0 Ve diz Ti dit e N 14 N N N 0 etc N is programmable between 0 no dithering and 15 There are 16 N 1 states in the complete cycle Underflow overflow conditions must be avoided Trigger Source The trigger source can be a signal applied to either of the Input Channels for internal triggering or the External Trigger Input Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Product Description 3 The modules provide a front panel MCX External Trigger Input The External Input provides a fully functional trigger circuit with selectable coupling level and slope It allows either 50 Q or 1 MQ termination impedance with diode protection against overload A 5 V limit on trigger signals should be respected although somewhat higher voltages for short time periods will not damage the unit Trigger Coupling Trigger coupling is used to select the coupling mode applied to the input of the trigger circuitry The AC LF Reject mode couples signals capacitively and removes the input signal s DC component and f
68. oducts the SSR Demo application a demonstration program for the Acgiris AP235 AP240 Analyzers the APX01 Demo application a demonstration program for the Acqiris AP101 AP201 Analyzers the TC Demo application a demonstration program for the Acgiris TC840 TC842 TC890 Time to Digital Converters full installation procedures for use with Microsoft Windows National Instruments LabVIEW RT Wind River VxWorks IVI COM C and Linux software A declaration of conformity Optional documentation such as a model dependent document giving Specifications amp Characteristics a Calibration Certificate or a Performance Verification After carefully unpacking all items inspect each to ensure there are no signs of visible damage Also check that all the components received match those listed on the enclosed packing list Agilent cannot accept responsibility for missing items unless we are notified promptly of any discrepancies If any items are found to be missing or are received in a damaged condition please contact the Agilent service center or your local 11 1 12 Introduction Warranty supplier immediately Retain the box and packing materials for possible inspection and or reshipment AI Agilent Acqiris Digitizer products are warranted to operate within specification assuming normal use for a period of at least one year from the date of shipment Units sold before April 2008 had three year warranties as do some more recent
69. of the command line is the following path AcqirisLive exe options where options are chosen from the following list a b B c d h H H m n p s t v x Available Switches List of available switches start in Averager mode Buffer size for large waveforms Number of bank for SAR mode no initial calibration use DMA for data transfers default high priority process default use acquisition interrupts low priority process medium priority process no DMA for data transfers Use acquisition polling start in Transient Recorder digitizer Mode simulation mode temperature update off show acquisition state disable automatic multi instruments I I I I I I I I I I I I rS SG ZG E EI ZZ E OO DO ZZ E LA d Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager Running the AcqirisLive Application 4 Operation Mode Acqiris averagers can be operated in Averager Mode or in standard Digitizer Mode AcqirisLive operates in either mode but since these are mutually exclusive only instruments that support the chosen mode are accessible in any given mode E g only averagers are accessible in Averager Mode while both digitizers and averagers are accessible in Digitizer Mode The operation mode can be switched within the application By default AcqirisLive starts in Digitizer Mode Buffer size Upon startup of the application the available physical memory on the computer is ch
70. often used to aid in setup when the input signal must be quickly characterized in order to determine proper trigger settings for Normal or Single mode acquisitions Timebase and Memory The timebase and memory settings Timekase should be chosen together in order to 5 usiDiy optimize the desired sample rate for ii Memo the acquisition MAX 10000 La d In Oscilloscope Mode the timebase e IE 1 00 segments PZO settings range from 1 ns div to 9 S div In Transient Recorder Mode Interval Rate time windows of 8 ns to 20 Ks are 8 0000 ns 125 00 MSis available In order to change the timebase click on the white area in the timebase display window and select the desired timebase from the list Alternatively the Decrement Increment timebase selection 55 4 56 Running the AcqirisLive Application buttons may be used in order to change the timebase In steps with each click of the mouse The sample rate and sample interval resulting from the combination of memory and timebase are indicated under the Sampling section of the control panel The Memory setting shows the maximum number of points to be acquired The actual number of points acquired could be less than the maximum number set if the acquisition time window selected fills less than the selected amount of memory at the full sample rate Alternatively in Oscilloscope Mode if a slower timebase is selected in order to ensure that the selected amount of memory will be f
71. on mode allows you to run AcqirisLive without having any digitizer installed in the PC Temperature Update The internally measured temperature of the currently selected module is normally displaved Using this switch turns this feature off Acquisition State This switch turns on the display of the current acquisition state Stopped Ready Started Reading Data ready This is helpful when running with time consuming settings e g many segments overlaid many channels large records etc but will slow down the overall performance Multi instruments By default AcqirisLive tries to detect instruments connected through AS bus and will initialize any connected digitizers as a multi instrument This behavior can be inhibited by the x switch 4 Running the AcgirisLive Application 70 Agilent U1084A Digitizer with averager Fan Assembly Remove screw to unmount fan bloc Agilent U1084A Digitizer User Manual Agilent Acqiris U1084A Digitizer with On board Processing Depending on the PC or chassis it might be usefull to turn the FAN assembly by 180 degree If you need to do so please respect the following indications KI Ah Must be in Must be in Lo this position this position Both cable for fan power supply should be inserted before assembly of the fan bloc Position for each connector is not important either above or bellow oe Agilent Technologies 71 D Appendix 72 Agilent U1084A Digitizer
72. ord a Agilent U1084A Digitizer with averager 33 3 34 Product Description signal over a time period of up to 131 us 0 5 MS 0 25 ns point The time base range can be adjusted by varying the amount of acquisition memory or the sampling rate of the digitizer Averaging Memory Data from the ADC is stored in the on board averaging memory The actual averaging memory size used for each acquisition can be programmed The maximum values are given in the table on the preceeding page The sums are stored in the 32 bit deep averaging memory allowing the summation of up to 16 777 216 waveforms without overflow Although the averaging memory permits to store a total of 64 Mpoints the length of one average is limited to 512 or 256 Kpoints This is due to the averaging memory topology The entire averaging memory can be fully used in the sequence average mode A segment time stamp associated with the first trigger of each accumulation and the necessary segment descriptors are also stored in memory To ensure the use of maximum sampling rate and high timing resolution we strongly recommend the use of long averaging memories whenever possible For example the model can simultaneously record 2 signals over a 100 us period at the full 2 GS s sampling rate The fast sampling rate ensures that high frequency signal components are accurately recorded If the averaging memory were reduced to just 20 KS then the sampling rate would need to be
73. r Windows Warnings If Setup detects a previous installation of Acqiris software on your system a warning screen will be displayed It is recommended to exit Setup and uninstall older versions The installer from software releases prior to Acgiris Software 2 0 installed the Digitizer Driver DLL files into the System directory These will be removed by Setup If you wish to keep the old installation on your system you should exit Setup and move all Acqiris driver files acqiris acqrs and acqir to some archive directory Ep Agilent Technologies i 2 18 Installation The DLL files will be installed into the Acqiris bin subdirectory of the Agilent software root and the corresponding path will be added to the PATH environment variable Multiple Versions With the software installation from Acgiris Software 2 0 or later it is possible to keep multiple versions on the same system but you must specify a different root directory i e Install Folder If you keep the same directory Setup will overwrite your previous installation To go back to a previous version you must change the AcqirisDxRoot AcgirisDxDir and PATH environment variables and reinstall the device driver Installation Before installing the Agilent Acqiris hardware you should complete the following steps to install the software for Windows You will need administrator privileges to complete the software installation under Windows Insert the Agilen
74. requencies below 50 Hz DC mode allows all signal components to be passed through to the trigger circuit There is also an HF Reject mode that removes signal components above 50 KHz Trigger Level The trigger level specifies the voltage at which the selected trigger source will produce a valid trigger The trigger level is defined as a set voltage Using the internal trigger with DC coupling the level expressed in is set with respect to the midpoint voltage V Offset voltage of the digitizer s vertical scale All trigger circuits have sensitivity levels that must be exceeded in order for reliable triggering to occur The U1084A offers level control for all trigger coupling modes Internal trigger level settings must be within Vm 0 5 FS where FS is the channel Full Scale The external trigger level can be set to values in the range DV The Digitizers will trigger on signals with a peak peak amplitude gt 10 FS from DC to their bandwidth limit Trigger Slope The trigger slope defines the direction of the signal that will be used to initiate the acquisition when it passes through the specified trigger level Positive slope indicates that the signal is transitioning from a lower voltage to a higher voltage Negative slope indicates the signal Is transitioning from a higher voltage to a lower voltage External Trigger Output When the module is ready to be triggered and a valid trigger signal occurs a trigger output is
75. rm button can be i Dison used When the E vertical scale is expanded the top and bottom lines forming the blue box in the main display window show the extent of the vertical zoom region The vertical position of the box and thus the data region shown on the zoom display may be changed by moving the box vertically with the mouse or by clicking on the up and down arrows at the left ofthe zoom display window 4 7910 479330 47950 47970 47990 48010 48030 48050 48070 48090 48110 gt When expanding a waveform to the point where individual data points are seen it may be desirable to use the Connect data points option under the Options menu in AcgirisLive When this option is selected larger data points are drawn on the display and a line connects each point The main display window contains a drop down selector under VIEW that controls the display type for both the main display and the zoom window There are two modes available the Live Display or the Persistence Display When persistence display is selected all points drawn to the display windows remain on while new points are added from subsequent acquisitions This mode is particularly suited for examining the jitter on an edge of a periodic signal as shown in the image below To clear the display in persistence display mode press the Clear button that appears on the main display window 57 4 58 Running the AcqirisLive Application Using avera
76. rsion Sz E data processing package or a spreadsheet e g Excel The Data fa RawADC values Format Conversion option is found Amplitudes MI 7 Segments ascolumns under the store menu Select Data Format Conversion in order to bring up the following window The acquisition must be stopped in order to access this menu To convert the binary data simply select the source folder where the data is located select the output format and click OK All binary data files found in the source directory will be converted to the desired format If you are writing amplitudes with multiple segments formatting with segments in columns is limited to 200 segments Calibrate The Calibrate item in the Options menu leads to a sub menu where a particular type of calibration can be invoked In order to use this item the acquisition must be stopped otherwise the Calibrate option is not selectable The possibilities are Calibrate instruments to perform a self calibration on the digitizers calibrating the gain offset trigger level and the timing Performing a calibration compensates for any drift in these properties typically due to component temperature variations Calibrate current combine configuration to perform a calibration only at the current configuration in each instrument Agilent U1084A Digitizer with averager 63 4 64 Running the AcqirisLive Application Averager setting S The Averager setting function gives the
77. s shown to take into account higher allowed values for the PCI voltages Except for the high total power consumption all modules conform to Revision 1 of the PCI express Specification All of these modules are capable of DMA transfers at rates 520 MB s Environmental and Physical The modules have a Declaration of Conformity according to ISO IEC Guide 22 and EN45014 and CE Marks of Compliance Operating Temperature 5 to 40 C 45 3 46 Product Description The above values are for the ambient temperature of the room or equivalent where the PC is located The temperature as measured on the board may well be significantly higher Relative Humidity Type tested at 80 non condensing Dimensions PCle full length standard EMC Complies with European EMC Directive 2004 108 EC IEC EN 61326 2 1 e CISPR Pub 11 Group 1 class A e AS NZS CISPR 11 e ICES NMB 001 This ISM device complies with Canadian ICES 001 Cet appareil ISM est conforme a la norme NMB 001 du Canada Required Airflow U1084 Fan unit required The digitizers are delivered with this Fan unit Agilent U1084A Digitizer with averager Agilent U1084A Digitizer with averager User Manual Agilent Acqiris U1084A Digitizer with On board Processing 4 Running the AcqirisLive Application AcgirisLive is an application to control and demonstrate the capabilities of Acqiris digitizers and averagers on a single machine Getting Started with AcqirisLive
78. st undergo an internal calibration As this calibration can only proceed sequentially for each channel the initialization time of AcgirisLive can become significant for systems with 67 4 Running the AcqirisLive Application many channels Therefore it can sometimes be desirable to be able to Start the application quickly by skipping the calibration which must then be done manually before collecting correct data DMA Data Transfers By default data transfers on the PCI bus between the digitizer memory and the PC are done in DMA Direct Memory Access mode which allows the fastest transfer speeds up to about 130 MB s peak 100 MB s sustained acquisition data rate These very high data rates are not well supported by all hardware configurations PC motherboard and system hangs due to endless retries on the PCI bus have been observed on some machines Such problems disappear when switching DMA mode off data transfer rate is then about 2 8 MB s Please note that switching DMA data transfer mode off precludes the use of acquisition interrupts The i switch will therefore be ignored when n is used Process Priority When the program checks for an event from the operating system e g to react to user input it can put itself to sleep for a specified period of time This gives other applications more processor time but limits the performance of AcqirisLive in terms of maximum acquisition rate The default is not to go to sl
79. t Acqiris Software CD into the CD ROM drive of your computer If the Autorun program does not start automatically Autoplay disabled you can start it manually or navigate to the AcgirisSoftware Windows folder in order to display the files included Choose Install AcqirisSoftware for Windows or run Setup exe from the Acg r sSoftware Windows folder and follow the instructions caretully Registration of your installation will help Agilent provide you with better support All information submitted will be treated in accordance with Agilent s privacy policy Setup will prepare a registration e mail in your e mail client application upon termination of the setup procedure You can then decide whether or not you wish to send it You may also add comments Uncheck the box if you do not want to register your installation After the software installation is complete you can either accept the suggestion to restart the computer or you should shutdown your computer and proceed with the hardware installation Agilent U1084A Digitizer Installation 2 Installing the Software for Linux The Agilent Acqiris software for Linux systems is available for current versions of the Linux kernel and GNU gcc compiler or as package files for some popular Linux distributions Please refer to the README file on the CD ROM AcgirisSoftware Linux folder for the detailed list for each Release To install follow the instructions provided in the appropriate
80. t Agilent Service Center before returning any product for repair You can find information about technical and professional services product support and equipment repair and service on the Web see http www agilent com find service or http www agilent com and after selecting your country click on Contact Us The service center will ask for your name company phone number and address the model and serial numbers of the unit to be repaired and a brief description of the problem Agilent U1084A Digitizer with averager Introduction 1 Before issuing a Service Order the service center may ask you to communicate with us by phone or eMail so that we can learn as much as needed about the problems observed If a unit returned under guarantee is found to be working normally and this procedure was not followed we reserve the right to charge you for the work done For your nearest customer support center please contact Acqiris Technical Support ACOIRIS_SUPPORT agilent com or come visit our web site at http www agilent com find acgiris Alternatively contact Acqiris at 1 800 829 4444 in the USA 41 22 884 32 90 in Europe or 61 3 9210 2890 in the Asia Pacific region The Agilent Support Centers can also help redirect you for any questions concerning the installation and operation of your equipment System Requirements Agilent U1084A Digitizer with averager Acqiris products need the following minimum PC System Requirements in order
81. t throughput the simultaneous accumulation and readout SAR mode operates on a double buffer accumulation memory and enables readout to the host PC of a completed sequence average while another sequence is started When a sequence average is acquired in SAR mode the series of events is identical to the normal sequence of average with the exception that another sequence of average can be restarted as soon as the ongoing sequence average Is completed In SAR mode the double buffer bank switching is automatically controlled by the driver after new acquire commands are executed The SAR sequence average mode must be stopped with a stop command SAR Simultaneous Accumulation amp Readout Tst Depending on operating system processor and processor activity AcqrsD1_Acquire the software command will take at least 50 us and perhaps even more than 100 ms to reach the hardware Mustbe gt Os gt gt Enable Acquisition Ox In 1 Ox In 15 Acquisition Active Ox Out 21 Toffseq Seq of A 3 Dummy Seq Autorize to start a new Internal Switch sequence as soon as the Semaphore previous is complete End of Acquisition Interrupt Must be gt 0s Tstop A a Seq of Accu 1 Seq of Accu 2 I SS1 bs2 ss3 AcqrsD1_Stop I FrontPanel sestese LED color HEI HEE EEE EZE ZZEE EIE En read sequ 1 read sequ
82. these terms the warranty terms in the sep arate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or sub contract Software is delivered and licensed as Commercial computer soft ware as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Agilent Technologies standard commercial license terms and non DOD Departments and Agencies of the U S Gov ernment will receive no greater than Restricted Rights as defined in FAR 52 227 19 c 1 2 June 1987 U S Govern ment users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data Safety Notices CAUTION A CAUTION notice denotes a haz ard It calls attention to an operat ing procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until
83. with support for all instruments LabVIEW RT National Instruments LabVIEW RT is supported for the same versions as shown above The VISA driver must be version 3 0 or higher MATLAB The MEX interface can be used with MathWorks MATLAB 7 3 or a newer version Visual BASIC The interface files and examples are available for Microsoft Visual Basic NET Tornado The example files are useable with Wind River Tornado 2 2 1 Transport amp Shipping CAUTION Cards can be safely transported in their original shipping packages The transport of U1084A cards mounted in a PC is a more delicate issue Because of their mass the cards can vibrate loose unless they are properly secured and braced However properly mounted cards with fans can be sufficiently well held the Adjustable retainer must be used so as to hold the card in place Agilent U1084A Digitizer with averager Introduction To package the instrument for shipping Step 1 Place the instrument in its original packaging materials 2 Surround the instrument with at least 3 to 4 inches 6 to 10 cm of its original packing material or bubble pack to prevent the instrument from moving in its shipping container 3 After wrapping it with packing material place the instrument in its original shipping container or a strong shipping container that is made of double walled corrugated cardboard with 159 kg 350 Ib bursting strength 4 Seal the shipping container securely
84. ws the digitizer to make a voltage measurement when the clock signal passes through a predefined threshold Normally the external clock sampling rate is the same as the external clock frequency however for the single channel mode the sampling rate is twice the clock frequency The threshold range is variable and user selectable between 2 V The signals should not exceed 5 V amplitude For applications that require greater timing precision and stability than is obtainable from the internal clock a 10 MHz Reference signal can be used The amplitude and threshold conditions for an External Reference are the same as for the External Clock If phase synchronization between several digitizers is required the reference signal should be applied to all of them The allowed frequency range is 0 3 43 3 44 Product Description Front Panel Inputs and Controls NAME FUNCTION Connector Channel 1 Channel 1 input BNC 1 Channel 2 Channel 2 input BNC 2 Trigger IN Trigger input MCX TR IN TRIGOUT Trigger output MCX TR I O A User configurable see below MUA 1 0 A 1 0 B User configurable see below MUA 1 0 B I O C User configurable see below MCXI 0C CLKEXT External Clock or Reference MCX CLK IN The 1 0 A 1 0 B and 1 0 C signals are 3 3 V compatible CMOS This means that on input low is lt 0 7 V and high must be in the range 1 7 V 5 0 V An unconnected signal will be high This definition ensures TTL compatibility On output the

User Manual: Agilent Acqiris U1084A

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