VXI VT1433B Guía de usuario

VT1433B8-Channel 196 kSamples/s Digitizer plus DSPUser’s GuidePart Number 82-0068-000Printed in U.S.APrint Date: July 30, 2004© VXI Technology, Inc.,

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Arm and TriggerThis section explains some terminology relating the the “Arm” and “Trigger”steps in the measurement loop. As an example a measurement m

VT1433B TriggeringThe following is a short discussion of triggering for the VT1433B.Triggering is defined as the transition from the armed state to th

Data Transfer ModesThe VT1433B can be programmed to use either of two data transfer modes:overlap block mode and continuous mode. Block mode will be d

Limit on Queuing of DataIn overlap block mode, a number of trigger events may be queued up before thehost reads the data for those triggers. The host

VT1433B Interrupt BehaviorInterrupt SetupThe VT1433B VXI module can be programmed to interrupt a host computerusing the VME interrupt lines. VME provi

VT1433B Interrupt HandlingTo make the VT1433B module do the interrupt, both a mask and a VMEInterrupt line must be specified, by calling e1432_set_int

Host Interrupt HandlingWhen the VT1433B asserts the VME interrupt line, SICL will cause the specifiedinterrupt handler to get called. Typically the in

VT1433B ParametersSome parameters, such as range or coupling, apply to specific channels. When achannel ID is given to a function that sets a channel-

VT1433B User's GuideThe Host Interface Library4-30

5Module DescriptionVT1433B User's GuideModule Description5-1

1Installing the VT1433BVT1433B User's GuideInstalling the VT1433B1-1

Module FeaturesThe 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-ch

Block DiagramFor block diagrams of the Arbitrary Source and the Tachometer, see the chapterson the Arbitrary Source option and the Tachometer option.V

VT1433B User's GuideModule Description5-4InputCircuit+–DifferentialAmpInputCircuitRangeSelectionInputCircuitInputCircuitDifferentialAmpDifferenti

VT1433B Front Panel DescriptionFront panels for four or eight channelsThe VT1433B may have any of several front panels depending on options andnumber

Standard Front PanelThis is the front panel for a standard VT1433B (this example has eight inputs).The LEDs and connectors are described on the next p

Status LEDsqFail: This is the standard VXI “Failed” indicator. It lights briefly when powering upand normally goes out after a few seconds. If it stay

VXI Backplane ConnectionsPower Supplies and GroundThe VT1433B conforms to the VME and VXI specifications for pin assignment.The current drawn from eac

The Local Bus (VT1433B-UGV)The VXI specification includes a 12-wire Local Bus between adjacent moduleslots. Using the Local Bus, VXI Technology has de

The VT1433B VXI DeviceAddress SpaceThe VXI system architecture defines two types of address space. A16 spaceconsists of 64 kBytes and A24 consists of

The mapping of the fixed and movable windows is illustrated as follows:AddressFFFFF168000 016Movable DSPBus WindowMovable7FFFF163000 016Fixed DSPBus W

Installing the VT1433BThis chapter contains instructions for installing the VT1433B 8-Channel196 kSamples/s Digitizer plus DSP Module and its drivers.

List of A16 RegistersThe following lists the A16 registers. For more information see “The A16Registers” in the chapter titled Register Definitions.Add

Trigger Lines (TTLTRG)TTLTRG consist of eight TTL lines on the VXI backplane on connector P2.They are available to provide synchronization between dev

Providing an External ClockThe VT1433B can be programed to accept an external word rate clock from theSample 0 line on the VXI Bus. The digital filter

Calibration DescriptionThe Cal connector on the front panel of the standard VT1433B can be configured(in software) as either an input or an output. It

VT1433B User's GuideModule Description5-16

6The Arbitrary Source Option(VT1433B-1D4)VT1433B User's GuideThe Arbitrary Source Option6-1

Arbitrary Source DescriptionAn arbitrary source can be included with the VT1433B 8-Channel 196 kSamples/sDigitizer plus DSP as VT1433B-1D4. (It cannot

Block DiagramVT1433B User's GuideThe Arbitrary Source Option6-356002128k x 24RAMAnalogregistersGate arraycontrolDigitalinterpolationfilter896002

The Arbitrary Source Option Front PanelThe VT1433B with the Arbitrary Source Option may have four or eight inputchannels. The following illustration s

LEDs and Connectors for the Arbitrary Source OptionStatus LEDsqFail: This is the standard VXI “Failed” indicator. It lights briefly when powering upan

To install the VT1433BCaution To protect circuits from static discharge, observe anti-static techniques wheneverhandling the VT1433B 8-Channel 196 kSa

VT1433B User's GuideThe Arbitrary Source Option6-6

7The TachometerOption (VT1433B-AYF)VT1433B User's GuideThe Tachometer Option7-1

Tachometer DescriptionA tachometer input can be included with the VT1433B 8-Channel 196 kSamples/sDigitizer plus DSP as VT1433B-AYF. (It cannot be ins

Input Count DivisionThe tachometer can be programmed to divide the input signal. For example if asignal is coming in at 100 counts per second, the tac

The Tachometer Option Front PanelThe VT1433B with the Tachometer Option may have four or eight inputchannels. The following illustration shows a front

LEDs and Connectors for the Tachometer OptionStatus LEDsqFail: This is the standard VXI “Failed” indicator. It lights briefly when powering upand norm

VT1433B User's GuideThe Tachometer Option7-6

8Break Out BoxesVT1433B User's GuideBreak Out Boxes8-1

IntroductionA Break Out Box connects the VT1432A or VT1433B to a set of connectors toreceive input signals.Several types of Break Out Boxes are availa

The VT3240A and VT3241A Break Out BoxesEach of the Break Out Boxes described in this section has eight BNC connectorsfor input. They each have two cab

4 Check the settings of the Boot Source and ROM Programming switches on the bottomof the module.Set switches 1 and 3 (BS1 and BS3) up and all the othe

VT3240AVoltage-type Break Out BoxIn this type of Break Out Box the signal is sent straight through to thesub-miniature “D” connectors on the VT1432A/3

Break Out Box CablesMaking a Custom Break Out Box CableA cable to connect the Break Out Box with the VT1432A/33B is supplied withthe each of the Break

Pin definitions for input connectordefinition pin # pin # definitionRFI GND/Cable Shield 26 13 - Diff 1+24V Power 25 12 +Diff 1GND Return for ± 24V 24

Recommendations on wiring for the VT1432A/33B 4-Channel Input ConnectorAllowed ConnectionsDifferential Input ChannelsConnect at VT1432A/33B end of cab

Dis-allowed ConnectionsDo NOT connect these pins on VT1432A/33B end of cabling. These signals andsupplies are provided for VXI Technology specified br

9Troubleshooting theVT1433BVT1433B User's GuideTroubleshooting the VT1433B9-1

DiagnosticsThe following describes a limited diagnostic program for the VT1432A, VT1433Band VT1434A. It is to be run from an HP-UX host. The program i

-uDisplay usage message.-vSpecifies the verbose printing. Normally, hostdiag does not print anything unlessan error is found. With this option, hostdi

VT1433B User's GuideTroubleshooting the VT1433B9-4

10Replacing AssembliesVT1433B User's GuideReplacing Assemblies10-1

5 Set the mainframe’s power switch to standby ( OI).Caution Installing or removing the module with power on may damage components in themodule.6 Place

Replaceable PartsFor information on upgrading the module or replacing parts, contact aVXI Technology sales and service office. See the inside back cov

CAGE Code NumbersThe following table provides the name and address for the manufacturers’ CAGEcode numbers (Mfr Code) listed in the replaceable parts

Assemblies: without VT1433B-AYF or VT1433B-1D4VT1433B User's GuideReplacing Assemblies10-4

RefDesVXI PartNumberQty Description MfrCodeMfr PartNumberA2 E1433-66534 2 PC ASSY-INPUT 03LB1 E1433-66534A4 E1432-66504 1 PC ASSY-LED 03LB1 E1432-6650

Assemblies: with VT1433B-AYFVT1433B User's GuideReplacing Assemblies10-6A10/A11A22

RefDesVTI PartNumberQty Description MfrCodeMfr PartNumberA2 E1433-66534 2 PC ASSY-INPUT 03LB1 E1433-66534A4 E1432-66504 1 PC ASSY-LED 03LB1 E1432-6650

Assemblies: with VT1433B-1D4VT1433B User's GuideReplacing Assemblies10-8

RefDesVTI PartNumberQty Description MfrCodeMfr PartNumberA2 E1433-66534 2 PC ASSY 03LB1 E1433-66534A4 E1432-66504 1 PC ASSY-LED 03LB1 E1432-66504A10 E

Cables: without VT1433B-AYF or VT1433B-1D4RefDesVTI PartNumberQty Description MfrCodeMfr PartNumberW1 8120-6767 1 CBL-ASM CXL, 290MM 03LB1 8120-6767W2

Cables: with VT1433B-AYFRefDesVTI PartNumberQty Description MfrCodeMfr PartNumberW2 8120-6765 1 CBL-ASM CXL, 255MM 03LB1 8120-6765W3 8120-6766 2 CBL-A

Install the host interface librariesAfter the hardware has been assembled, the next step in installing the VT1433Bis to install the host interface lib

Cables: with VT1433B-1D4RefDesVTI PartNumberQty Description MfrCodeMfr PartNumberW2 8120-6765 1 CBL-ASM CXL, 255MM 03LB1 8120-6765W3 8120-6766 2 CBL-A

Front PanelRefDesVTI PartNumberQty Description MfrCodeMfr PartNumberMP200 E1433-00207 1 PNL-FRT, STANDARD 03LB1 E1433-00207MP201 E1433-00208 1 PNL-FRT

To remove the top cover1Remove the five long screws using a T-10 Torx driver and remove the three short screwsusing a T-8 Torx driver. Lift cover off.

To remove the front panel1 Remove top cover, see “To remove the top cover.” Gently disconnect cables from the printed circuitassemblies. Using a T-8 T

3Remove the nuts that fasten the cables and assembly to the front panel. Using a 1/4-inch nut driver.4Remove ribbon cable from the A4 assembly, by pul

5To replace the front panel with another that does not have its own side brackets, remove the bracketsfrom the old front panel using a T-8 Torx driver

To remove the input assemblies1Remove top cover, see “To remove the top cover.” Remove the front panel, see steps 1 and 2 in “Toremove the front panel

3Remove the top assembly by gently pulling it forward, releasing it from the connectors.4Remove the remaining input assembly.VT1433B User's Guide

To remove the VT1433B-AYF assembly1 Remove the top cover, see “To remove the top cover.” Disconnect the two cables leading to the A5assembly and move

To remove the VT1433B-1D4 assembly1 Remove the top cover, see “To remove the top cover.” Disconnect the three cables leading to the A41assembly and mo

To transport the module•Package the module using the original factory packaging or packaging identical to thefactory packaging.Containers and material

To remove the A22 assembly1 Remove the top cover, see “To remove the top cover.” Gently push the silver tabs outward and tilt theA22 assembly forward

To remove the A10/A11 assembly1Remove top cover and input assemblies. See “To remove the top cover,” and “To remove the inputassemblies.”2AIf the modu

2B If the module has VT1433B-AYF do the following: Remove the VT1433B-AYF assembly, see “Toremove the VT1433B-AYF assembly.” Remove the five long and

11BackdatingVT1433B User's GuideBackdating11-1

BackdatingThis chapter documents modules that differ from those currently being produced.With the information provided in this chapter, this guide can

Appendix ARegister DefinitionsVT1433B User's GuideRegister DefinitionsA-1

The VT1433B VXI RegistersThe VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP is a register-basedVXI device. Unlike message-based devices which use

Address Read Write3E16Parameter 7 Register3C163A16Parameter 6 Register38163616Parameter 5 Register34163216Parameter 4 Register30162E16Parameter 3 Regi

The A24 RegistersThe following A24 registers are accessible at the base address defined by thedevice’s offset Register. The registers at offsets 0 to

The VXI Bus Registers are defined as follows:qId Register: A read of this 16 bit register provides information about the device’sconfiguration. Its va

VT1433B User's GuideInstalling the VT1433B1-8

Block Ready: A one (1) indicates that there is a block of data available to beread from the Send Data registers. A zero (0) indicates that less than a

qControl Register: A write to this register causes specific actions to be executed by thedevice. The actions are described in the following table.Bit

qPage Map Register: This read/write register defines the internal location of themovable window into the device’s DSP bus. (This 512 kB window begins

qIRQ Status Register: This read-only register indicates the reason for asserting the VMEBus interrupt. The format of the data is identical to that of

qParameter 1-7 Registers: These are 32-bit RAM locations used to pass parametersalong with commands to the device or query responses from the device.

Command/Response ProtocolThe Command/Response protocol uses the following resources:qCommand/Query Response register implemented as a general purpose

In order to avoid contention and/or invalid data reads, there are certain rules thatmust be observed:5 A controller must not write to any of the RAM r

Wait for DoneThis is the procedure to wait for command completion and check for error.20 Wait for Command/Parameter Ready true.21 Wait for Done true.2

DSP Bus RegistersThere are two 32-bit registers in the DSP bus address space. The VXI FPGAdoes not assert TA* when these registers are accessed.200A16

qDSP Command Register: This register is used to assert VXI interrupts and togglevarious status register bits. Many of the bits in this register are gr

2Getting Started With theVT1433BVT1433B User's GuideGetting Started With the VT1433B2-1

VT1433B User's GuideRegister DefinitionsA-16

GlossaryA16 registersAddress space using 16 address lines. The VXI definition gives each VXImodule 64 bytes of A16 registers.A24 registersAddress spac

C-Library (interface library)A library of functions, written in C language, which can be used to operate theVT1432A and VT1433B.C-sizeOne of several p

DSPDigital Signal Processing.DTB arbitration busThe VT1432A does not use the arbitration bus. The arbitration bus is part of theVXI specification and

kSamples/sKilosamples per second.LEDLight Emitting Diode.Local BusA high-speed port that is defined as a standard byte-wide ECL protocol which cantran

register-based VXI deviceRegister-based devices communicate with the VXI Bus by way of registers. Theymust be programmed with low-level binary command

Soft Front Panel (SFP)A VXIplug&play program which provides and easy-to-use interface for theVT1432A. It can be used in Microsoft Windows 95 or la

VME BusAn industry-standard bus on the VXI backplane for module control, setup andmeasurement data transfers. For measurement data transfers, the Loca

VT1433B User's GuideGlossaryG-8

IndexNumerics32-bit registers, A-10writing, A-104-channel input, 4-7, 4-10, 7-28-channel input, 5-7, 6-5, 7-58-channel input (break out box), 8-3AA16

iiNOTICEThe information contained in this document is subject to change without notice.VXI TECHNOLOGY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THI

IntroductionThis chapter provides assistance in getting the VT1433B running and makingsimple measurements. It shows how to install the software librar

Shut, 6-5Tach1, 7-5Tach2, 7-5connectors SMB, 5-7, 6-5, 7-5constant output level amplifier, 6-2, 6-5continuous mode, 3-32, 3-33, 4-24, 4-25controlmeasu

VXIplug&play , 3-39Windows, 3-5holdoff time, 7-3host interface librariesinstalling, 2-3, 2-5, 2-6host interface library, 4-2Host Interface Library

tachometer, 4-9types, 3-36, 4-4, 4-29part numbersassemblies, 10-5, 10-7, 10-9cables, 10-10, 10-11, 10-12front panel, 10-13port control register, A-7po

SETTLING, 3-26, 3-27, 4-19, 4-20TESTED, 3-26, 3-27, 3-28, 4-19, 4-20,4-21TRIGGER, 3-27, 3-28, 4-20, 4-21static RAM, 5-10status LEDs, 5-7, 6-5, 7-5stat

To install the VXIplug&play librariesSystem Requirements (Microsoft Windows)•An IBM compatible personal computer with either Microsoft Windows 95

Getting Updates (Windows)The latest version of the VT1433B instrument drivers can be found on-line atwww.vxitech.com.Getting Updates (HP-UX)For the la

To install the Windows VXIplug&play drivers for the VT1433B(for Windows 95 and Windows NT)1 Insert the VXIplug&play Drivers and Product Manual

To install the HP-UX VXIplug&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

The VXIplug&play Soft Front Panel (SFP)Using the soft front panelIf running the VT1432A/33B software in Microsoft Windows 95 or Windows NT,the Sof

The buttons on the right side of the SFP display are defined as follows:MeasThis button opens the Measurement Control dialog box. It can set:qMeasurem

DisplayThis 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

VEE example programsscope.veeThis program displays four channels with time record and FFT for each channel.For the examples provided below, Agilent©VE

The program scope.vee starts, showing four channels, with time record and FFTfor each channel.To start a measurement, click the Run button on the tool

In This BookThe VT1433B 8-Channel 196 kSamples/s Digitizer plus DSP is a C-size VXImodule. “196 kSamples/s” refers to the maximum sample rate of 19660

To use and modify scope.vee, it is necessary to be familiar with using theAgilent VEE program. Refer to Agilent VEE documentation if necessary. InView

In detail view there are boxes representing parts of the scope.vee program. Forprograms that are too large to be viewed all at one time, use the scrol

Clicking on Alphnumeric in the Display menu sets up a box that specifies how todisplay the output of a function.Use Agilent VEE to look at the functio

VT1433B User's GuideGetting Started With the VT1433B2-15Figure 2-6: minimum.vee (scroll to see entire display)

Other Agilent VEE example programsThere are several other example programs that can be examined in the same wayas scope.vee. These programs are in the

C-Language Host Interface Library example programsThe VT1432A C-Language Host Interface Library comes with several exampleprograms, which help demonst

Running a demo program: semascope.cTo run this program, type:/opt/e1432/demo/semascope. This program displays thetime records for 32 channels (when ho

Visual Basic example programsVEE programs and the VXIplug&play Library can be used on both UNIX and PCsystems. In addition, the PC can use Visual

VT1433B User's GuideGetting Started With the VT1433B2-20

3Using the VT1432A3-1

VT1433B User's Guideiv

IntroductionThis chapter shows how to use the VT1433B using the VXIplug&play HostInterface Library.The Host Interface Library for the VT1433B is a

What is VXIplug&play?Agilent uses VXIplug&play technology in the VT1433B. This section outlinessome of the details of VXIplug&play technol

The actual instrument driver itself is a DLL (Dynamic Linked Library) createdfrom:qA set of source (.C) files.qA set of header (.H) files, used for co

The Soft Front Panel (SFP)The Soft Front Panel is a stand-alone Windows application, built on top of theVXIplug&play driver DLL; it is used for in

Header and Library FilesIn the Windows environment, the following files are in the directory\Vxipnp\WinXX\Hpe1432hpe1432.fp The “FP” file used by VEE

Channels and groupsThis section gives some information about using channels and groups. For moredetailed information see the VT1433B help text.Channel

Creating a Channel GroupThe function hpe1432_createChannelGroup creates and initializes a channel group.A channel group allows commands to be issued t

Multiple-module/mainframe MeasurementsGrouping of Channels/ModulesThe interface library for the VT1433B is designed to allow programming ofseveral cha

All modules except the “system module” need to be set to use the VXI TTLtrigger lines as the clock source. Use hpe1432_setClockSource for this.Set the

Managing Multiple-mainframe MeasurementsIn a single-mainframe measurement, the VT1433B communicates with otherVT1433Bs through the TTLTRG lines. Howev

Table of ContentsIn This Book ... iiiSupport Resources...

In the example above, Mainframe A contains the Slot 0 Controller for a multiplemainframe system. Mainframe A is connected to Mainframe B with a VXI-MX

VT1433B User's GuideUsing the VT1433B3-13MXI-2Extender InterfaceMXI-2ExtenderInterfaceMXI BusCableVXI Mainframe AVXI Mainframe BVXI Mainframe CVT

Synchronization in Multiple-mainframe MeasurementsA TTL Trigger line between VT1433Bs making group measurements keeps allmodules synchronized. This is

Module FeaturesData Flow Diagram and FIFO ArchitectureThe illustration on the next page shows data flow in the VT1433B. In thisexample there are four

VT1433B User's GuideUsing the VT1433B3-16ch 1Input 1Input 2ch 8StaticRAMFIFOFIFO (DRAM)circularbufferto VME Busor Local Bustriggerch 1ch 2ch 3ch

Base Sample RatesBaseband Measurement SpansThe table on the following page shows the measurement spans available for basesample rates, for baseband me

Table of Baseband Measurement Spans (part 1 of 6)All values are in Hertz (Hz).samplefrequency(Fs) —>48000 50000 51200number of ÷2stepswith ÷5 witho

Table of Baseband Measurement Spans (part 2 of 6)All values are in Hertz (Hz).sample frequency(Fs) —>64000 65536 51200number of÷2 stepswith ÷5 with

Table of Baseband Measurement Spans (part 3 of 6)All values are in Hertz (Hz).sample frequency(Fs) —>80000 81920 96000number of÷2 stepswith ÷5 with

Table of Baseband Measurement Spans (part 4 of 6)All values are in Hertz (Hz).sample frequency(Fs) —>10000 102400 128000number of÷2 stepswith ÷5 wi

Synchronization in Multiple-mainframe Measurements ...3-14Module Features ... 3-15Data Flow Di

Table of Baseband Measurement Spans (part 5 of 6)All values are in Hertz (Hz).sample frequency(Fs) —>133333 153600 156250number of÷2 stepswith ÷5 w

Table of Baseband Measurement Spans (part 6 of 6)All values are in Hertz (Hz).sample frequency(Fs) —>163840 192000 196608number of÷2 stepswith ÷5 w

VT1433B sample frequenciesThe following is a list of all sample frequencies (in Hz) available on theVT1433B, including those not listed in the precedi

Measurement ProcessMeasurement Setup and ControlWhen the VT1433B makes a measurement, the measurement itself consists of twophases: the measurement in

Parameter SettingsMany parameters are channel-dependent, meaning that each channel can be setindependently of the others in the module. Other paramete

In the BOOTING state, the digital processors of the module load their parametersand their program. Once done, the module releases the Sync/Trigger lin

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 theVT

Arm and TriggerThis section explains some terminology relating the the “Arm” and “Trigger”steps in the measurement loop. As an example a measurement m

VT1433B TriggeringThe following is a short discussion of triggering for the VT1433B.Triggering is defined as the transition from the armed state to th

Trigger LevelTo set the trigger level, use hpe1432_setTriggerMode to select “level” or “bound”mode; and use hpe1432_setTriggerLevel twice to set both

VT1433B Front Panel Description ...5-5Front panels for four or eight channels ...5-5Standard

Data Transfer ModesThe VT1433B can be programmed to use either of two data transfer modes:overlap block mode and continuous mode. Block mode will be d

Limit on Queuing of DataIn overlap block mode, a number of trigger events may be queued up before thehost reads the data for those triggers. The host

VT1433B Interrupt BehaviorInterrupt SetupFor an example of interrupt handling see the program event.c in the examplesdirectory.The VT1433B VXI module

Once it has done this interrupt, the module will not do any more VME interruptsuntil re-enabled with hpe1432_reenableInterrupt. Normally, the last thi

Host Interrupt HandlingWhen the VT1433B asserts the VME interrupt line, the program will cause thespecified interrupt handler to get called. Typically

Some parameters, such as clock frequency or data transfer mode, apply globallyto a module. When a channel ID is used to change a parameter that applie

New features of the VT1433B softwareSpan and center frequencyDecimation spans are now allowed for all legal sample rates with the VT1433B.Zoom modeZoo

Where to get more informationThere is more information available about the VT1432A. This section shows howto access it and print it, if desired.The Fu

VT1433B User's GuideUsing the VT1433B3-40

4The Host Interface Library4-1

Chapter 10. Replacing AssembliesReplaceable Parts ... 10-2Ordering Information...

IntroductionThe Host Interface Library for the VT1433B is a set of functions that allows theregister-based VT1433B to be programed at a higher level t

Header and Library FilesThe /opt/e1432/lib directory contains several versions of the VT1432A HostInterface library:lib1432.a A normal HP-UX archive l

Parameter InformationDescription of VT1433B ParametersSome parameters, such as range or coupling, apply to specific channels. When achannel ID is give

Parameter ListsThis section shows which parameters are global parameters, which arechannel-specific and what types of channels the channel-specific pa

Parameter Default Value Changesdecimation_output Single Pass Waitdecimation_oversample Off Waitdecimation_undersamp 1 Waitdelta_order 0.1 Waitfifo_siz

196.608 kHz 4-channel Input ParametersParameter Default Value Changesactive Off Abortanti_alias_digital(*) On Abortauto_range_mode Up/Down Immediateca

Option 1D4 Single-channel Source ParametersParameter Default Value Changesactive Off Abortamp_scale 1.0 Immediateanti_alias_digital On Waitduty_cycle

Option AYF Tachometer ParametersParameter Default Value Changesactive Off Abortinput_high Normal Immediatepre_arm_rpm 600 RPM Immediaterpm_high 6000 R

Channel and Group IDsMost functions in the VT1432A C-Language Host Interface Library take an IDparameter which specifies what channel or group of chan

Group IDsGroup IDs are logical IDs which are created by a call toe1432_create_channel_group. This function can be called multiple times to createmulti

Support ResourcesSupport resources for this product are available on the Internet and at VXI Technologycustomer support centers.VXI TechnologyWorld He

Multiple-module/Mainframe MeasurementsGrouping of Channels/ModulesThe interface library for the VT1433B is designed to allow programming ofseveral cha

All modules need to be set to use the shared sync line rather than the defaultsetting of internal sync. This can be done with the e1432_set_multi_sync

Managing Multiple-mainframe MeasurementsIn a single mainframe measurement, the VT1433B communicates with otherVT1433Bs through the TTLTRG lines. Howev

In the example above, Mainframe A contains the Slot 0 Controller for a multiplemainframe system. Mainframe A is connected to Mainframe B with a VXI-MX

VT1433B User's GuideThe Host Interface Library4-16MXI-2Extender InterfaceMXI-2ExtenderInterfaceMXI BusCableVXI Mainframe AVXI Mainframe BVXI Main

Synchronization in Multiple-mainframe MeasurementsA TTL Trigger line between VT1433Bs making group measurements keeps allmodules synchronized. This is

Measurement ProcessMeasurement Setup and ControlWhen the VT1433B makes a measurement, the measurement itself consists of twophases: the measurement in

Parameter SettingsMany parameters are channel-dependent, meaning that each channel can be setindependently of the others in the module. Other paramete

In the BOOTING state, the digital processors of the module load their parametersand their program. Once done, the module releases the Sync/Trigger lin

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 theVT