Manuale d’uso / di manutenzione del prodotto VT1433B del fabbricante VXI
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VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP User’s Guide Part Number 82-0068-000 Printed in U.S.A Print Date: July 30, 2004 © VXI Technology, Inc.
ii NOTICE The information contained in this document is subject to change without notice. VXI TECHNOLOGY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MANUAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
In This Book The VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP is a C-size VXI module. “196 kSamples/s” refers to the maximum sample rate of 196608 samples per second. The VT1433B may contain either one or two 4-channel input assemblies so that the module may have a total of up to eight inputs.
VT1433B User's Guide iv.
Table of Contents In This Book ..................................................... i i i Support Resources ................................................. i x Chapter 1. Installing the VT1433B Installing the VT1433B ...............................
Synchronization in Multiple-mainframe Measurements .............. 3-14 Module Features ................................................ 3-15 Data Flow Diagram and FIFO Architecture ....................... 3-15 Base Sample Rates .......................
VT1433B Front Panel Description ................................... 5 - 5 Front panels for four or eight channels ............................ 5 - 5 Standard Front Panel .......................................... 5 - 6 VXI Backplane Connections ......
Chapter 10. Replacing Assemblies Replaceable Parts ............................................... 10-2 Ordering Information ......................................... 10-2 Direct Mail Order System ..................................... 10-2 CAGE Code Numbers .
Support Resources Support resources for this product are available on the Internet and at VXI Technology customer support centers. VXI Technology World Headquarters VXI Technology, Inc. 2031 Main Street Irvine, CA 92614-6509 Phone: (949) 955-1894 Fax: (949) 955-3041 VXI Technology Cleveland Instrument Division VXI Technology, Inc.
x.
1 Installing the VT1433B VT1433B User's Guide Installing the VT1433B 1-1.
Installing the VT1433B This chapter contains instructions for installing the VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP Module and its drivers.
To install the VT1433B Caution To protect circuits from static discharge, observe anti-static techniques whenever handling the VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP Module. 1 Set up the VXI mainframe. See the mainframe's installation guide for assistance.
4 Check the settings of the Boot Source and ROM Programming switches on the bottom of the module. Set switches 1 and 3 (BS1 and BS3) up and all the other switches down.
5 Set the mainframe’s power switch to standby ( O I ). Caution Installing or removing the module with power on may damage components in the module. 6 Place the module’s card edges (top and bottom) into the module guides in the slot. 7 Slide the module into the mainframe until the module connects firmly with the backplane connectors.
Install the host interface libraries After the hardware has been assembled, the next step in installing the VT1433B is to install the host interface libraries. Refer to the chapter titled “Getting Started With the VT1433B” to continue the installation process.
To transport the module • Package the module using the original factory packaging or packaging identical to the factory packaging. Containers and materials identical to those used in factory packaging are available through VXI Technology.
VT1433B User's Guide Installing the VT1433B 1-8.
2 Getting Started With the VT1433B VT1433B User's Guide Getting Started With the VT1433B 2-1.
Introduction This chapter provides assistance in getting the VT1433B running and making simple measurements. It shows how to install the software libraries and how to run some of the example programs that are included. For more information see the other chapters in this book and the on-line function reference.
To install the VXI plug&play libraries System Requirements (Microsoft Windows) • An IBM compatible personal computer with either Microsoft Windows 95 or later or Microsoft Windows NT. (With either Windows OS, use the VXI plug&play library) • Additional hardware and software to connect the IBM compatible computer to a VXI mainframe.
Getting Updates (Windows) The latest version of the VT1433B instrument drivers can be found on-line at www.vxitech.com. Getting Updates (HP-UX) For the latest HP-UX instrument drivers, please contact VXI Technology Customer Support Services. Contact information can be found in the Support section of the manual on page ix.
To install the Windows VXI plug&play drivers for the VT1433B (for Windows 95 and Windows NT) 1 Insert the VXI plug&play Drivers and Product Manuals CD into the CD-ROM drive. 2 Run the program: d:driversDAQ Driversdriver_ vxipnp_e1432_a_06_13.exe.
To install the HP-UX VXI plug&play drivers for the VT1433B (for HP-UX systems) 1 Log in as root. 2 Insert the VT1432A CD-ROM into the CD-ROM drive or obtain the latest VT1432A distribution. 3 Type swinstall. See the HP-UX Reference manual for information on the swinstall command.
The VXI plug&play Soft Front Panel (SFP) Using the soft front panel If running the VT1432A/33B software in Microsoft Windows 95 or Windows NT, the Soft Front Panel (SFP) program can be used to interface with the VT1433B.
The buttons on the right side of the SFP display are defined as follows: Meas This button opens the Measurement Control dialog box. It can set: q Measurement single/repeat q Mode block/continuous q Trigger auto/manual/input/source q Frequency span q Blocksize Input This button opens a dialog box where the VT1433B’s inputs can be setup.
Display This button opens a dialog box which specifies how the data will be displayed. For each trace, an input channel (or OFF) and an output file can be specified. VXI This button opens a dialog box showing the modules installed in the VXI mainframe and indicating which are active and inactive.
VEE example programs scope.vee This program displays four channels with time record and FFT for each channel. For the examples provided below, Agilent © VEE is used. The scope.vee program is located at VXIPNPHpe1432examplesvee on a Microsoft Windows system or at /usr/e1432/ vee-examples on an HP-UX system.
The program scope.vee starts, showing four channels, with time record and FFT for each channel. To start a measurement, click the Run button on the toolbar (triangle symbol). To pause, click on the Pause button (two vertical bars, next to the Run button).
To use and modify scope.vee, it is necessary to be familiar with using the Agilent VEE program. Refer to Agilent VEE documentation if necessary. In View Detail mode, click on Help on the menu bar for assistance in using Agilent VEE.
In detail view there are boxes representing parts of the scope.vee program. For programs that are too large to be viewed all at one time, use the scroll bars at the bottom and left side of the screen to scroll the display. To see more detail, double-click on a box or click on the View Detail (chart symbol) button on the top bar of the box.
Clicking on Alphnumeric in the Display menu sets up a box that specifies how to display the output of a function. Use Agilent VEE to look at the functions that make up the simple “scope.vee” program. This is an example of how the VT1433B can be programmed using Agilent VEE.
VT1433B User's Guide Getting Started With the VT1433B 2-15 Figure 2-6: minimum.vee (scroll to see entire display).
Other Agilent VEE example programs There are several other example programs that can be examined in the same way as scope.vee. These programs are in the path VXIPNPHpe1432examplesvee on a Microsoft Windows system or /usr/e1432/ vee-examples on an HP-UX system.
C-Language Host Interface Library example programs The VT1432A C-Language Host Interface Library comes with several example programs, which help demonstrate how to use the library. These example programs are found in the the VXIPNPHpe1432examples directory.
Running a demo program: semascope.c To run this program, type:/opt/e1432/demo/ semascope. This program displays the time records for 32 channels (when hooked up to two VT1433B modules with 16 channels each). The channel that is active for changing the display is highlighted.
Visual Basic example programs VEE programs and the VXI plug&play Library can be used on both UNIX and PC systems. In addition, the PC can use Visual Basic.
VT1433B User's Guide Getting Started With the VT1433B 2-20.
3 Using the VT1432A 3-1.
Introduction This chapter shows how to use the VT1433B using the VXI plug&play Host Interface Library. The Host Interface Library for the VT1433B is a set of functions that allow the user to program the register-based VT1433B at a higher level than register reads and writes.
What is VXI plug&play ? Agilent uses VXI plug&play technology in the VT1433B. This section outlines some of the details of VXI plug&play technology.
The actual instrument driver itself is a DLL (Dynamic Linked Library) created from: q A set of source (.C) files. q A set of header (.H) files, used for compiling the file as well as to describe the driver’s calls to any program using the driver. q A standard driver library (.
The Soft Front Panel (SFP) The Soft Front Panel is a stand-alone Windows application, built on top of the VXI plug&play driver DLL; it is used for instrument evaluation and debugging and as a demo. It is not a programmable interface to the instrument, nor can it be used to generate code.
Header and Library Files In the Windows environment, the following files are in the directory VxipnpWinXXHpe1432 hpe1432.fp The “FP” file used by VEE and CVI hpe1432.hlp Windows help file hpe1432.kb Knowledge base file hpe1432.bas header for Visual Basic hpe1432.
Channels and groups This section gives some information about using channels and groups. For more detailed information see the VT1433B help text. Channel Groups In the VT1433B VXI plug&play driver, a channel group is the basic unit of hardware control.
Creating a Channel Group The function hpe1432_ createChannelGroup creates and initializes a channel group. A channel group allows commands to be issued to several VT1433B channels at once, simplifying system setup.
Multiple-module/mainframe Measurements Grouping of Channels/Modules The interface library for the VT1433B is designed to allow programming of several channels from one or several distinct modules, as if they were one entity. Each VT1433B module has up to eight channels.
All modules except the “system module” need to be set to use the VXI TTL trigger lines as the clock source. Use hpe1432_ setClockSource for this. Set the “system module” to output the clock.
Managing Multiple-mainframe Measurements In a single-mainframe measurement, the VT1433B communicates with other VT1433Bs through the TTLTRG lines. However, when using the VXI-MXI bus extender modules, the TTLTRG lines, which carry the group synchronization pulse and sample clock, are extended only in one direction.
In the example above, Mainframe A contains the Slot 0 Controller for a multiple mainframe system. Mainframe A is connected to Mainframe B with a VXI-MXI interface, Agilent/HP E1482B. To successfully manage this multiple mainframe environment, use the following guidelines.
VT1433B User's Guide Using the VT1433B 3-13 MXI-2 Extender Interface MXI-2 Extender Interface MXI Bus Cable VXI Mainframe A VXI Mainframe B VXI Mainframe C VT1433B VT1433B VT1433B bus Fail Cal Ac.
Synchronization in Multiple-mainframe Measurements A TTL Trigger line between VT1433Bs making group measurements keeps all modules synchronized. This is an open-collector line where each module holds the one designated as the SYNC line low until the module is ready to advance to the next measurement state.
Module Features Data Flow Diagram and FIFO Architecture The illustration on the next page shows data flow in the VT1433B. In this example there are four 4-channel input assemblies for a total of sixteen input channels. The data for all channels is sent to the FIFO.
VT1433B User's Guide Using the VT1433B 3-16 ch 1 Input 1 Input 2 ch 8 S tatic RAM FIFO FIFO (DRAM) circular buffer to VME Bus or Local Bus trigger ch 1 ch 2 ch 3 ch 4 ch 5 VME Bus Local Bus 96002.
Base Sample Rates Baseband Measurement Spans The table on the following page shows the measurement spans available for base sample rates, for baseband measurements. “Fs” is the sample frequency or sample rate. The value for zero divide-by-two steps and no divide-by-five step is the top measurement span corresponding to the sample rate.
Table of Baseband Measurement Spans (part 1 of 6) All values are in Hertz (Hz). sample frequency (Fs) —> 48000 50000 51200 number of ÷2 steps with ÷5 without ÷5 with ÷5 without ÷5 with ÷5 without ÷5 0 3750.000000 18750.000000* 3906.250000 19531.
Table of Baseband Measurement Spans (part 2 of 6) All values are in Hertz (Hz). sample frequency (Fs) —> 64000 65536 51200 number of ÷2 steps with ÷5 without ÷5 with ÷5 without ÷5 with ÷5 without ÷5 0 5000.000000 25000.000000* 5120.000000 25600.
Table of Baseband Measurement Spans (part 3 of 6) All values are in Hertz (Hz). sample frequency (Fs) —> 80000 81920 96000 number of ÷2 steps with ÷5 without ÷5 with ÷5 without ÷5 with ÷5 without ÷5 0 6250.000000 31250.000000* 6400.000000 32000.
Table of Baseband Measurement Spans (part 4 of 6) All values are in Hertz (Hz). sample frequency (Fs) —> 10000 102400 128000 number of ÷2 steps with ÷5 without ÷5 with ÷5 without ÷5 with ÷5 without ÷5 0 7812.500000 39062.500000* 8000.000000 40000.
Table of Baseband Measurement Spans (part 5 of 6) All values are in Hertz (Hz). sample frequency (Fs) —> 133333 153600 156250 number of ÷2 steps with ÷5 without ÷5 with ÷5 without ÷5 with ÷5 without ÷5 0 10416.666667 52083.333333* 12000.000000 60000.
Table of Baseband Measurement Spans (part 6 of 6) All values are in Hertz (Hz). sample frequency (Fs) —> 163840 192000 196608 number of ÷2 steps with ÷5 without ÷5 with ÷5 without ÷5 with ÷5 without ÷5 0 12800.000000 64000.000000* 15000.000000 75000.
VT1433B sample frequencies The following is a list of all sample frequencies (in Hz) available on the VT1433B, including those not listed in the preceding table. 48000.0 49152.0 50000.0 51200.0 52400.852878 61440.0 62500.0 64000.0 65536.0 66666.666667 76800.
Measurement Process Measurement Setup and Control When the VT1433B makes a measurement, the measurement itself consists of two phases: the measurement initialization and the measurement loop. Each of these phases consists of several states, through which the measurement progresses.
Parameter Settings Many parameters are channel-dependent, meaning that each channel can be set independently of the others in the module. Other parameters are module-dependent; changing a module-dependent parameter for a channel will change it for all channels on that module.
In the BOOTING state, the digital processors of the module load their parameters and their program. Once done, the module releases the Sync/Trigger line and moves to the BOOTED state. The VT1433B stays in the BOOTED state until it sees a high-to-low transition of the Sync/Trigger line (that is, all the VT1433Bs in the system have booted).
Upon entering the ARM state the VT1433B starts saving new data in its FIFO. It remains in the ARM state until the Sync/Trigger line goes high. If the VT1433B is programmed with a pre-trigger delay, it collects enough data samples to satisfy this pre-trigger delay and then releases the Sync/Trigger line.
Arm and Trigger This section explains some terminology relating the the “Arm” and “Trigger” steps in the measurement loop. As an example a measurement might be set up to arm at a certain RPM level and then subsequently trigger at an external event corresponding to top dead center (TDC).
VT1433B Triggering The following is a short discussion of triggering for the VT1433B. Triggering is defined as the transition from the armed state to the triggered state. This transition is caused by a low going edge on a TTL trigger line. The function hpe1432_ getTtltrgLines selects which of the eight TTL trigger lines is to be used.
Trigger Level To set the trigger level, use hpe1432_ setTriggerMode to select “level” or “bound” mode; and use hpe1432_setTriggerLevel twice to set both the upper and lower trigger levels. The difference between the upper and lower trigger levels must be at least 10% of full scale (and 10% is usually the best amount).
Data Transfer Modes The VT1433B can be programmed to use either of two data transfer modes: overlap block mode and continuous mode. Block mode will be discussed first. Block Mode (Agilent/HP E1431A) The VT1433B’s overlap block mode is similar the block mode which is used in some Agilent instruments such as the Agilent/HP E1431A.
Limit on Queuing of Data In overlap block mode, a number of trigger events may be queued up before the host reads the data for those triggers. The host may get further and further behind the data acquisition.
VT1433B Interrupt Behavior Interrupt Setup For an example of interrupt handling see the program event.c in the examples directory. The VT1433B VXI module can be programmed to interrupt a host computer using the VME interrupt lines. VME provides seven such lines.
Once it has done this interrupt, the module will not do any more VME interrupts until re-enabled with hpe1432_ reenableInterrupt. Normally, the last thing a host computer’s interrupt handler should do is call hpe1432_ reenableInterrupt.
Host Interrupt Handling When the VT1433B asserts the VME interrupt line, the program will cause the specified interrupt handler to get called. Typically the interrupt handler routine will read data from the module and then re-enable VT1433B interrupts with hpe1432_reenableInterrupt .
Some parameters, such as clock frequency or data transfer mode, apply globally to a module. When a channel ID is used to change a parameter that applies to a whole module, the channel ID is used to determine which module. The parameter is then changed for that module.
New features of the VT1433B software Span and center frequency Decimation spans are now allowed for all legal sample rates with the VT1433B. Zoom mode Zoom mode is available for all legal sample rates with the VT1433B. The zoom span will be allowed to go as high as ctock-freq/2.
Where to get more information There is more information available about the VT1432A. This section shows how to access it and print it, if desired. The Function Reference for VXI plug&play On a PC, the VT1432A Function Reference is in Microsoft Help text.
VT1433B User's Guide Using the VT1433B 3-40.
4 The Host Interface Library 4-1.
Introduction The Host Interface Library for the VT1433B is a set of functions that allows the register-based VT1433B to be programed at a higher level than register reads and writes. The library allows groups of VT1433Bs to be set up and programmed as if they were one entity.
Header and Library Files The /opt/e1432/lib directory contains several versions of the VT1432A Host Interface library: lib1432.a A normal HP-UX archive library, used by host programs wanting to talk to VT1433B hardware. lib1432.sl An HP-UX shared library, used by host programs wanting to talk to VT1433B hardware.
Parameter Information Description of VT1433B Parameters Some parameters, such as range or coupling, apply to specific channels. When a channel ID is given to a function that sets a channel-specific parameter, only that channel is set to the new value.
Parameter Lists This section shows which parameters are global parameters, which are channel-specific and what types of channels the channel-specific parameters apply to.
Parameter Default Value Changes decimation_output Single Pass Wait decimation_oversample Off Wait decimation_undersamp 1 Wait delta_order 0.1 Wait fifo_size 0 (Use All DRAM) Wait filter_settling_time .
196.608 kHz 4-channel Input Parameters Parameter Default Value Changes active Off Abort anti_alias_digital(*) On Abort auto_range_mode Up/Down Immediate calc_data Time Wait coupling DC Glitch enable O.
Option 1D4 Single-channel Source Parameters Parameter Default Value Changes active Off Abort amp_scale 1.0 Immediate anti_alias_digital On Wait duty_cycle 0.
Option AYF Tachometer Parameters Parameter Default Value Changes active Off Abort input_high Normal Immediate pre_arm_rpm 600 RPM Immediate rpm_high 6000 RPM Immediate rpm_interval 25 RPM Immediate rp.
Channel and Group IDs Most functions in the VT1432A C-Language Host Interface Library take an ID parameter which specifies what channel or group of channels the function should apply to. The ID can either be a channel ID or a group ID. If a group ID is used, then the function is applied to each channel contained in the group.
Group IDs Group IDs are logical IDs which are created by a call to e1432_create_channel_group. This function can be called multiple times to create multiple groups and each group can contain any combination of channels, including mixtures of different types of channels.
Multiple-module/Mainframe Measurements Grouping of Channels/Modules The interface library for the VT1433B is designed to allow programming of several channels from one or several distinct modules, as if they were one entity. Each VT1433B module has up to 16 channels.
All modules need to be set to use the shared sync line rather than the default setting of internal sync. This can be done with the e1432_set_multi_sync function, using the group ID. One module of the set of modules needs to be set to output the sync pulse.
Managing Multiple-mainframe Measurements In a single mainframe measurement, the VT1433B communicates with other VT1433Bs through the TTLTRG lines. However, when using the VXI-MXI bus extender modules, the TTLTRG lines, which carry the group synchronization pulse and sample clock, are extended only in one direction.
In the example above, Mainframe A contains the Slot 0 Controller for a multiple mainframe system. Mainframe A is connected to Mainframe B with a VXI-MXI interface, Agilent/HP E1482B. To successfully manage this multiple mainframe environment, use the following guidelines.
VT1433B User's Guide The Host Interface Library 4-16 MXI-2 Extender Interface MXI-2 Extender Interface MXI Bus Cable VXI Mainframe A VXI Mainframe B VXI Mainframe C VT1433B VT1433B VT1433B bus Fa.
Synchronization in Multiple-mainframe Measurements A TTL Trigger line between VT1433Bs making group measurements keeps all modules synchronized. This is an open-collector line where each module holds the one designated as the SYNC line low until the module is ready to advance to the next measurement state.
Measurement Process Measurement Setup and Control When the VT1433B makes a measurement, the measurement itself consists of two phases: the measurement initialization and the measurement loop. Each of these phases consists of several states, through which the measurement progresses.
Parameter Settings Many parameters are channel-dependent, meaning that each channel can be set independently of the others in the module. Other parameters are module-dependent; changing a module-dependent parameter for a channel will change it for all channels on that module.
In the BOOTING state, the digital processors of the module load their parameters and their program. Once done, the module releases the Sync/Trigger line and moves to the BOOTED state. The VT1433B stays in the BOOTED state until it sees a high-to-low transition of the Sync/Trigger line (that is, all the VT1433Bs in the system have booted).
Upon entering the ARM state the VT1433B starts saving new data in its FIFO. It remains in the ARM state until the Sync/Trigger line goes high. If the VT1433B is programmed with a pre-trigger delay, it collects enough data samples to satisfy this pre-trigger delay and then releases the Sync/Trigger line.
Arm and Trigger This section explains some terminology relating the the “Arm” and “Trigger” steps in the measurement loop. As an example a measurement might be set up to arm at a certain RPM level and then subsequently trigger at an external event corresponding to top dead center (TDC).
VT1433B Triggering The following is a short discussion of triggering for the VT1433B. Triggering is defined as the transition from the armed state to the triggered state. This transition is caused by a low going edge on a TTL trigger line. Which one of the eight TTL trigger line is chosen by e1432_get_ttltrg_lines().
Data Transfer Modes The VT1433B can be programmed to use either of two data transfer modes: overlap block mode and continuous mode. Block mode will be discussed first. Block Mode (Agilent/HP E1431A) In block mode, the input hardware acquires one block after getting an arm and trigger.
Limit on Queuing of Data In overlap block mode, a number of trigger events may be queued up before the host reads the data for those triggers. The host may get further and further behind the data acquisition.
VT1433B Interrupt Behavior Interrupt Setup The VT1433B VXI module can be programmed to interrupt a host computer using the VME interrupt lines. VME provides seven such lines and the VT1433B module can be told to use any one of them (see e1432_set_interrupt_priority).
VT1433B Interrupt Handling To make the VT1433B module do the interrupt, both a mask and a VME Interrupt line must be specified, by calling e1432_set_interrupt_mask and e1432_set_interrupt_priority respectively.
Host Interrupt Handling When the VT1433B asserts the VME interrupt line, SICL will cause the specified interrupt handler to get called. Typically the interrupt handler routine will read data from the module and then re-enable VT1433B interrupts with e1432_reenable_interrupt.
VT1433B Parameters Some parameters, such as range or coupling, apply to specific channels. When a channel ID is given to a function that sets a channel-specific parameter, only that channel is set to the new value. Some parameters, such as clock frequency or data transfer mode, apply globally to a module.
VT1433B User's Guide The Host Interface Library 4-30.
5 Module Description VT1433B User's Guide Module Description 5-1.
Module Features The VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP is a VXI C-sized, scalable input module. The VT1433B may contain one or two 4-channel input assemblies so that the module may have a total of up to eight inputs. The following is a list of some of the features of the VT1433B.
Block Diagram For block diagrams of the Arbitrary Source and the Tachometer, see the chapters on the Arbitrary Source option and the Tachometer option.
VT1433B User's Guide Module Description 5-4 Input Circuit + – Differential Amp Input Circuit Range Selection Input Circuit Input Circuit Differential Amp Differential Amp Differential Amp Range.
VT1433B Front Panel Description Front panels for four or eight channels The VT1433B may have any of several front panels depending on options and number of input channels.
Standard Front Panel This is the front panel for a standard VT1433B (this example has eight inputs). The LEDs and connectors are described on the next page. If the VT1433B has an Arbitrary Source (VT1433B-1D4) or a Tachometer (VT1433B-AYF) its front panel will be different.
Status LEDs q Fail: This is the standard VXI “Failed” indicator. It lights briefly when powering up and normally goes out after a few seconds. If it stays on it indicates a hardware failure in the module. q Acs: This is the standard VXI “Access” indicator.
VXI Backplane Connections Power Supplies and Ground The VT1433B conforms to the VME and VXI specifications for pin assignment. The current drawn from each supply is given in the specifications chapter. Data Transfer Bus The VT1433B conforms to the VME and VXI specifications for pin assignment and protocol.
The Local Bus (VT1433B-UGV) The VXI specification includes a 12-wire Local Bus between adjacent module slots. Using the Local Bus, VXI Technology has defined a standard byte-wide ECL protocol which can transfer data from left to right at up to 15.7 Mbytes /s using VT1433B.
The VT1433B VXI Device Address Space The VXI system architecture defines two types of address space. A16 space consists of 64 kBytes and A24 consists of 16 MBytes . The VT1433B has a 32-bit port through which it has access to the A16 and A24 space. It can also use D32 to send and receive data though the port.
The mapping of the fixed and movable windows is illustrated as follows: Address FFFFF 16 8000 0 16 Movable DSP Bus Window Movable 7FFFF 16 3000 0 16 Fixed DSP Bus Window Fixed 2FFFF 16 2000 0 16 Send/.
List of A16 Registers The following lists the A16 registers. For more information see “The A16 Registers” in the chapter titled Register Definitions.
Trigger Lines (TTLTRG) TTLTRG consist of eight TTL lines on the VXI backplane on connector P2. They are available to provide synchronization between devices.
Providing an External Clock The VT1433B can be programed to accept an external word rate clock from the Sample 0 line on the VXI Bus. The digital filters are still functional, providing a range of effective word rates. All sampling is done simultaneously and is not multiplexed.
Calibration Description The Cal connector on the front panel of the standard VT1433B can be configured (in software) as either an input or an output. It can be set to any of four settings: q DC - The VT1433B outputs a DC calibration signal from the millivolt range up to 15 volts.
VT1433B User's Guide Module Description 5-16.
6 The Arbitrary Source Option (VT1433B-1D4) VT1433B User's Guide The Arbitrary Source Option 6-1.
Arbitrary Source Description An arbitrary source can be included with the VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP as VT1433B-1D4. (It cannot be installed with a Tachometer Option, VT1433B-AYF.) The Arbitrary Source Option can supply arbitrary or sine signals under control of measurement software.
Block Diagram VT1433B User's Guide The Arbitrary Source Option 6-3 56002 128k x 24 RAM Analog registers Gate array control Digital interpolation filter 8 96002 “B” Bus or A24 VXI Signal DAC Range DAC 25.
The Arbitrary Source Option Front Panel The VT1433B with the Arbitrary Source Option may have four or eight input channels. The following illustration shows a front panel for eight channels.
LEDs and Connectors for the Arbitrary Source Option Status LEDs q Fail: This is the standard VXI “Failed” indicator. It lights briefly when powering up and normally goes out after a few seconds. If it stays on it indicates a hardware failure in the module.
VT1433B User's Guide The Arbitrary Source Option 6-6.
7 The Tachometer Option (VT1433B-AYF) VT1433B User's Guide The Tachometer Option 7-1.
Tachometer Description A tachometer input can be included with the VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP as VT1433B-AYF. (It cannot be installed with an Arbitrary Source Option, VT1433B-1D4.
Input Count Division The tachometer can be programmed to divide the input signal. For example if a signal is coming in at 100 counts per second, the tachometer can be set to look at only every 10th count for a result of 10 counts per second.
The Tachometer Option Front Panel The VT1433B with the Tachometer Option may have four or eight input channels. The following illustration shows a front panel for eight channels.
LEDs and Connectors for the Tachometer Option Status LEDs q Fail: This is the standard VXI “Failed” indicator. It lights briefly when powering up and normally goes out after a few seconds. If it stays on it indicates a hardware failure in the module.
VT1433B User's Guide The Tachometer Option 7-6.
8 Break Out Boxes VT1433B User's Guide Break Out Boxes 8-1.
Introduction A Break Out Box connects the VT1432A or VT1433B to a set of connectors to receive input signals. Several types of Break Out Boxes are available. This chapter covers: q VT3240A Voltage Break Out Box q VT3241A ICP ® Break Out Box Other Break Out Boxes include the VT3242A Charge Break Out Box and the VT3243A Microphone Break Out Box.
The VT3240A and VT3241A Break Out Boxes Each of the Break Out Boxes described in this section has eight BNC connectors for input. They each have two cables which connect to the sub-miniature “D” connectors on the front panel of the VT1432A/33B. Each of the two cables carries four channels.
VT3240AVoltage-type Break Out Box In this type of Break Out Box the signal is sent straight through to the sub-miniature “D” connectors on the VT1432A/33B. VT3241A ICP ® -type Break Out Box Each of the eight connectors in this type of Break Out Box is connected to an independent, floating current source.
Break Out Box Cables Making a Custom Break Out Box Cable A cable to connect the Break Out Box with the VT1432A/33B is supplied with the each of the Break Out Boxes described in this chapter. However, this section is included for those users who may want to make their own connecting cable.
Pin definitions for input connector definition pin # pin # definition RFI GND/Cable Shield 26 13 - Diff 1 +24V Power 25 12 +Diff 1 GND Return for ± 24V 24 11 RFI GND/Drain Shield 1 -24 Power 23 10 RF.
Recommendations on wiring for the VT1432A/33B 4-Channel Input Connector Allowed Connections Differential Input Channels Connect at VT1432A/33B end of cabling and at DUT Recommended: shielded twisted p.
Dis-allowed Connections Do NOT connect these pins on VT1432A/33B end of cabling. These signals and supplies are provided for VXI Technology specified break out boxes and are unspecified for other usag.
9 Troubleshooting the VT1433B VT1433B User's Guide Troubleshooting the VT1433B 9-1.
Diagnostics The following describes a limited diagnostic program for the VT1432A, VT1433B and VT1434A. It is to be run from an HP-UX host. The program is called “hostdiag.” It can be found with the VT1432A Host Interface Software Library at location /usr/e1432/bin.
-u Display usage message. -v Specifies the verbose printing. Normally, hostdiag does not print anything unless an error is found. With this option, hostdiag prints status messages as it operates. This option also enables additional diagnostic information which is not generally useful.
VT1433B User's Guide Troubleshooting the VT1433B 9-4.
10 Replacing Assemblies VT1433B User's Guide Replacing Assemblies 10-1.
Replaceable Parts For information on upgrading the module or replacing parts, contact a VXI Technology sales and service office. See the inside back cover of this guide for a list of office locations and address.
CAGE Code Numbers The following table provides the name and address for the manufacturers’ CAGE code numbers (Mfr Code) listed in the replaceable parts tables. Mfr Code Mfr Name Address 03LB1 VXI Technology, Inc. Irvine, CA 92614 U.S.A. 30817 Laird Technologies Delaware Water Gap, PA 18327 U.
Assemblies: without VT1433B-AYF or VT1433B-1D4 VT1433B User's Guide Replacing Assemblies 10-4.
Ref Des VXI Part Number Qty Description Mfr Code Mfr Part Number A2 E1433-66534 2 PC ASSY-INPUT 03LB1 E1433-66534 A4 E1432-66504 1 PC ASSY-LED 03LB1 E1432-66504 A10 E1433-66510 1 PC ASSY-MAIN OPT UGV .
Assemblies: with VT1433B-AYF VT1433B User's Guide Replacing Assemblies 10-6 A10/A11 A22.
Ref Des VTI Part Number Qty Description Mfr Code Mfr Part Number A2 E1433-66534 2 PC ASSY-INPUT 03LB1 E1433-66534 A4 E1432-66504 1 PC ASSY-LED 03LB1 E1432-66504 A5 E1432-66505 1 PC ASSY-OPT AYF 03LB1 .
Assemblies: with VT1433B-1D4 VT1433B User's Guide Replacing Assemblies 10-8.
Ref Des VTI Part Number Qty Description Mfr Code Mfr Part Number A2 E1433-66534 2 PC ASSY 03LB1 E1433-66534 A4 E1432-66504 1 PC ASSY-LED 03LB1 E1432-66504 A10 E1433-66510 1 PC ASSY-MAIN OPT UGV 03LB1 .
Cables: without VT1433B-AYF or VT1433B-1D4 Ref Des VTI Part Number Qty Description Mfr Code Mfr Part Number W1 8120-6767 1 CBL-ASM CXL, 290MM 03LB1 8120-6767 W2 8120-6765 2 CBL-ASM CXL, 255 MM 03LB1 8.
Cables: with VT1433B-AYF Ref Des VTI Part Number Qty Description Mfr Code Mfr Part Number W2 8120-6765 1 CBL-ASM CXL, 255MM 03LB1 8120-6765 W3 8120-6766 2 CBL-ASM CXL, 03LB1 8120-6766 W4 8120-6762 1 C.
Cables: with VT1433B-1D4 Ref Des VTI Part Number Qty Description Mfr Code Mfr Part Number W2 8120-6765 1 CBL-ASM CXL, 255MM 03LB1 8120-6765 W3 8120-6766 2 CBL-ASM CXL, 03LB1 8120-6766 W4 8120-6762 1 C.
Front Panel Ref Des VTI Part Number Qty Description Mfr Code Mfr Part Number MP200 E1433-00207 1 PNL-FRT, STANDARD 03LB1 E1433-00207 MP201 E1433-00208 1 PNL-FRT, OPT 1DL 03LB1 E1433-00208 MP203 E1432-.
To remove the top cover 1 Remove the five long screws using a T-10 Torx driver and remove the three short screws using a T-8 Torx driver. Lift cover off.
To remove the front panel 1 Remove top cover, see “To remove the top cover.” Gently disconnect cables from the printed circuit assemblies. Using a T-8 Torx driver, remove the two screws that attach the handles to the assembly. Pull out the handles making sure not to lose the two spacers.
3 Remove the nuts that fasten the cables and assembly to the front panel. Using a 1/4-inch nut driver. 4 Remove ribbon cable from the A4 assembly, by pulling back the latch on the connector and and removing cable. Be sure to note the orientation of the cable.
5 To replace the front panel with another that does not have its own side brackets, remove the brackets from the old front panel using a T-8 Torx driver.
To remove the input assemblies 1 Remove top cover, see “To remove the top cover.” Remove the front panel, see steps 1 and 2 in “To remove the front panel.” Note that the following steps are showing illustrations of an VT1433B with a standard configuration (two input assemblies).
3 Remove the top assembly by gently pulling it forward, releasing it from the connectors. 4 Remove the remaining input assembly. VT1433B User's Guide Replacing Assemblies 10-19.
To remove the VT1433B-AYF assembly 1 Remove the top cover, see “To remove the top cover.” Disconnect the two cables leading to the A5 assembly and move cables aside. 2 Using a T-10 Torx driver, remove the three screws that attach the assembly to the VT1433B and lift the assembly off.
To remove the VT1433B-1D4 assembly 1 Remove the top cover, see “To remove the top cover.” Disconnect the three cables leading to the A41 assembly and move cables aside. 2 Using a T-10 Torx driver, remove the three screws that attach the assembly to the VT1433B and lift the assembly off.
To remove the A22 assembly 1 Remove the top cover, see “To remove the top cover.” Gently push the silver tabs outward and tilt the A22 assembly forward releasing it from the connector.
To remove the A10/A11 assembly 1 Remove top cover and input assemblies. See “To remove the top cover,” and “To remove the input assemblies.” 2A If the module does NOT have VT1433B-AYF or VT1433B-1D4 do the following: Remove the five standoffs using a 1/4-inch nut driver and remove the three screws using a T-8 Torx driver.
2B If the module has VT1433B-AYF do the following: Remove the VT1433B-AYF assembly, see “To remove the VT1433B-AYF assembly.” Remove the five long and the three short standoffs using a 1/4-inch nut driver . 2C If the module has VT1433B-1D4 do the following: Remove the 1D4 option assembly, see “To remove the VT1433B-1D4 assembly.
11 Backdating VT1433B User's Guide Backdating 11-1.
Backdating This chapter documents modules that differ from those currently being produced. With the information provided in this chapter, this guide can be modified so that it applies to any earlier version or configuration of the module.
Appendix A Register Definitions VT1433B User's Guide Register Definitions A-1.
The VT1433B VXI Registers The VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP is a register-based VXI device. Unlike message-based devices which use higher-level programming using ASCII characters, register-based devices are programmed at a very low level using binary information.
Address Read Write 3E 16 Parameter 7 Register 3C 16 3A 16 Parameter 6 Register 38 16 36 16 Parameter 5 Register 34 16 32 16 Parameter 4 Register 30 16 2E 16 Parameter 3 Register 2C 16 2A 16 Parameter .
The A24 Registers The following A24 registers are accessible at the base address defined by the device’s offset Register. The registers at offsets 0 to E 16 are not accessible using longword (D32) accesses. The registers at offsets 10 16 to FFFFF 16 may be accessed by any of the of the D08(EO), D16 or D32 modes.
The VXI Bus Registers are defined as follows: q Id Register: A read of this 16 bit register provides information about the device ’s configuration. Its value is always CFFF16 as defined in the following table.
Block Ready: A one (1) indicates that there is a block of data available to be read from the Send Data registers. A zero (0) indicates that less than a full block is available. Data Ready: A one (1) indicates that there is at least one word (32 bits) of data available in the Send Data register.
q Control Register: A write to this register causes specific actions to be executed by the device. The actions are described in the following table. Bit 15 14-2 1 0 Contents A24/A32 Enable Unused Sysfail Inhibit Reset A24/A32 Enable: A one (1) in this field enables access to the device’s A24 VME Bus registers.
q Page Map Register: This read/write register defines the internal location of the movable window into the device ’s DSP bus. (This 512 kB window begins at 512 kB into the device ’s A24 registers.) The eight least significant bits of the Page Map register are the page number.
q IRQ Status Register: This read-only register indicates the reason for asserting the VME Bus interrupt. The format of the data is identical to that of the Status/ID word returned by an interrupt acknowledge ( IACK) cycle. It differs from the IACK cycle in that the IACK cycle will clear the status bits and cause the de-assertion of the IRQ line.
q Parameter 1-7 Registers: These are 32-bit RAM locations used to pass parameters along with commands to the device or query responses from the device. See the following section regarding D16/D08 access of 32-bit registers and the communication protocol.
Command/Response Protocol The Command/Response protocol uses the following resources: q Command/Query Response register implemented as a general purpose RAM q Three parameter registers implemented as .
In order to avoid contention and/or invalid data reads, there are certain rules that must be observed: 5 A controller must not write to any of the RAM registers when Command/Parameter Ready is false. 6 The DSP must not write to any of the RAM registers when either Command/Parameter Ready or Query Response Ready is true.
Wait for Done This is the procedure to wait for command completion and check for error. 20 Wait for Command/Parameter Ready true. 21 Wait for Done true. 22 I fE r r *=0, handle error. Complex Sequences A robust procedure for sending a query and reading the response would look like this: 23 Send Command.
DSP Bus Registers There are two 32-bit registers in the DSP bus address space. The VXI FPGA does not assert TA* when these registers are accessed. 200A 16 DSP Command Register 200B 16 Boot Register Note that these registers appear multiple times in the memory map, since only the address lines A31-30, A17-13, A9-8 and A3-0 are used for decoding.
q DSP Command Register: This register is used to assert VXI interrupts and toggle various status register bits. Many of the bits in this register are grouped into related Clock and Value pairs. This allow the bits to be modified independently with single register writes.
VT1433B User's Guide Register Definitions A-16.
Glossary A16 registers Address space using 16 address lines. The VXI definition gives each VXI module 64 bytes of A16 registers. A24 registers Address space using 24 address lines. VXI modules can configure how much A24 address space they use. Agilent VEE An Agilent program for graphical programming.
C-Library (interface library) A library of functions, written in C language, which can be used to operate the VT1432A and VT1433B. C-size One of several possible sizes for VXI modules. The VT1432A and VT1433B are C-size modules. channel-dependent commands Commands that are channel-dependent change a parameter for each channel independently.
DSP Digital Signal Processing. DTB arbitration bus The VT1432A does not use the arbitration bus. The arbitration bus is part of the VXI specification and is used by some modules to request bus control. ECL Emitter-Collector Logic, a standard for electrical signals.
kSamples/s Kilosamples per second. LED Light Emitting Diode. Local Bus A high-speed port that is defined as a standard byte-wide ECL protocol which can transfer measurement data at up to 2.62 MSamples per second from left to right on the VXI backplane.
register-based VXI device Register-based devices communicate with the VXI Bus by way of registers. They must be programmed with low-level binary commands but they can communicate faster than message-based devices. The VT1432A and VT1433B are register-based VXI devices.
Soft Front Panel (SFP) A VXI plug&play program which provides and easy-to-use interface for the VT1432A. It can be used in Microsoft Windows 95 or later or Windows NT. SRAM Static Random Access Memory. summer A circuit that outputs the sum of two input signals.
VME Bus An industry-standard bus on the VXI backplane for module control, setup and measurement data transfers. For measurement data transfers, the Local Bus offers higher transfer rates. VXI VME Extensions for Instrumentation, a standard specification for instrument systems.
VT1433B User's Guide Glossary G-8.
Index Numerics 32-bit registers, A-10 writing, A-10 4-channel input, 4-7, 4-10, 7-2 8-channel input, 5-7, 6-5, 7-5 8-channel input (break out box), 8-3 A A16 address space, 5-10 A16 registers, 5-12, A.
Shut, 6-5 Tach1, 7-5 Tach2, 7-5 connectors SMB, 5-7, 6-5, 7-5 constant output level amplifier, 6-2, 6-5 continuous mode, 3-32, 3-33, 4-24, 4-25 control measurement, 3-25, 4-18 control register, A-7 co.
VXIplug&play , 3-39 Windows, 3-5 holdoff time, 7-3 host interface libraries installing, 2-3, 2-5, 2-6 host interface library, 4-2 Host Interface Library, 5-10, A-2 hpe1432_32.
tachometer, 4-9 types, 3-36, 4-4, 4-29 part numbers assemblies, 10-5, 10-7, 10-9 cables, 10-10, 10-11, 10-12 front panel, 10-13 port control register, A-7 power supplies, 5-8 pre-arm, 3-29, 4-22 pre-t.
SETTLING, 3-26, 3-27, 4-19, 4-20 TESTED, 3-26, 3-27, 3-28, 4-19, 4-20, 4-21 TRIGGER, 3-27, 3-28, 4-20, 4-21 static RAM, 5-10 status LEDs, 5-7, 6-5, 7-5 status register, A-5 summer, 6-2 Support, ix Sup.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il VXI VT1433B è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del VXI VT1433B - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso VXI VT1433B imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul VXI VT1433B ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il VXI VT1433B, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del VXI VT1433B.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il VXI VT1433B. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo VXI VT1433B insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
