HP VXI E1432A Manuale Utente

HP E1432A16 Channel 51.2 kSa/s Digitizer plus DSPUser’s GuidePart Number E1432-90013Printed in U.S.A.Print Date: April 1999,Sixth EditionHewlett-Pack

HP E1432A Interrupt BehaviorInterrupt SetupThe HP E1432A VXI module can be programmed to interrupt a hostcomputer using the VME interrupt lines. VME p

HP E1432A Interrupt HandlingTo make the HP E1432A module do the interrupt, both a mask and a VMEInterrupt line must be specified, by calling e1432_set

Host Interrupt HandlingWhen the HP E1432A asserts the VME interrupt line, SICL will cause thespecified interrupt handler to get called. Typically the

HP E1432A ParametersSome parameters, such as range or coupling, apply to specific channels.When a channel ID is given to a function that sets a channe

5Module Description5-1

Module FeaturesThe HP E1432A 16 Channel 51.2 kSa/s Digitizer plus DSP is a VXI C-sized,scaleable input module. The HP E1432A may contain up to four 4-

Block DiagramFor block diagrams of the Arbitrary Source and the Tachometer, see thechapters on the Arbitrary Source option and the Tachometer option.S

RangeSelectionInputCircuitAnti-AliasFilterDigital Filter,DecimationTrigger,Digital Filter,DecimationTrigger,Digital Filter,DecimationTrigger,Digital F

HP E1432A Front Panel DescriptionFront Panels for 4, 8, and 16 ChannelsThe HP E1432A may have any of several front panels depending on optionsand numb

1Installing the HP E1432A1-1

Standard Front PanelThis is the front panel for a standard HP E1432A (this example has 16inputs). The LED’s and connectors are described on the next p

Status LEDsq Fail: This is the standard VXI “Failed” indicator. It lights briefly when poweringup and normally goes out after a few seconds. If it sta

VXI Backplane ConnectionsPower Supplies and GroundThe HP E1432A conforms to the VME and VXI specifications for pinassignment. The current drawn from e

The Local Bus (Option UGV)The VXI specification includes a 12-wire Local Bus between adjacentmodule slots. Using the Local Bus, Hewlett-Packard has de

The HP E1432A VXI DeviceAddress SpaceThe VXI system architecture defines two types of address space. A16 spaceconsists of 64 KBytes and A24 consists o

The mapping of the fixed and movable windows is illustrated as follows:AddressFFFFF8000 0Movable DSPBus WindowMovable7FFFF3000 0Fixed DSPBus Window2FF

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 ClockYou can program the HP E1432A to accept an external word rate clockfrom the Sample 0 line on the VXI Bus. The digital filte

Calibration DescriptionThe Cal connector on the front panel of the standard HP E1432A can beconfigured (in software) as either an input or an output.

Installing the HP E1432AThis chapter contains instructions for installing the HP E1432A 16-Channel51.2 kSa/s Digitizer plus DSP Module and its drivers

6The Arbitrary SourceOption (1D4)6-1

Arbitrary Source DescriptionAn arbitrary source can be included with the HP E1432A 16 Channel 51.2kSa/s Digitizer plus DSP as Option 1D4. (It cannot b

Block DiagramregistersinputDigitalinterpolationfilterAnalogSummerRAM128K x 24Gate arraycontrol96002 "B" Busor A24 VXICOLA825.6 kHz6.4 kHzShu

The Arbitrary Source Option Front PanelThe HP E1432A with the Arbitrary Source Option may have 4, 8, and 16input channels. The following illustration

LED’s and Connectors for the Arbitrary Source OptionStatus LEDsq Fail: This is the standard VXI “Failed” indicator. It lights briefly when poweringup

7The TachometerOption (AYF)7-1

Tachometer DescriptionA tachometer input can be included with the HP E1432A 16 Channel 51.2kSa/s Digitizer plus DSP as Option AYF. (It cannot be insta

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

To install the HP E1432ACaution To protect circuits from static discharge, observe anti-static techniqueswhenever handling the HP E1432A 16-Channel 51

The Tachometer Option Front PanelThe HP E1432A with the Tachometer Option may have 4, 8, and 16 inputchannels. The following illustration shows a fron

LED’s and Connectors for the Tachometer Option.Status LEDsq Fail: This is the standard VXI “Failed” indicator. It lights briefly when poweringup and n

8Break Out Boxes8-1

IntroductionA Break Out Box connects the HP E1432A or HP E1433A to a set ofconnectors to receive input signals.Several types of Break Out Boxes are av

The HP E1432-61600 and HP E1432-61602 Break OutBoxesEach of the Break Out Boxes described in this section has eight BNCconnectors for input. They each

HP E1432-61602 Voltage-type Break Out BoxIn this type of Break Out Box the signal is sent straight through to thesub-miniature “D” connectors on the H

Break Out Box CablesMaking a Custom Break Out Box CableA cable to connect the Break Out Box with the HP E1432A/33A is suppliedwith the each of the Bre

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

Differential Input ChannelsConnect at E1432/3A end of cabling and at DUTRecommended: shielded twisted pair1 + Diff 42 - Diff 45 + Diff 36 - Diff 38 +

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

Dis-allowed ConnectionsDo NOT connect these pins on E1432/3A end of cabling. These signals andsupplies are provided for HP specified break out boxes a

9Troubleshooting theHP E1432A9-1

DiagnosticsThe following describes a limited diagnostic program for the HP E1432A,HP E1433A, and HP E1434A. It is to be run from an HP-UX host. Thepro

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

10Replacing Assemblies10-1

Replaceable PartsFor information on upgrading your module or replacing parts, contact yourlocal Hewlett-Packard sales and service office. See the insi

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

Assemblies: without option AYF or 1D4MP006MP002MP004MP005MPOO3MP007MP009MP014MP015A22/A24A10/A11MP012MP001A2A2MP016/MP017MP013MP011MP005MP010MP013HP E

RefDesHP PartNumberCD Qty Description MfrCodeMfr PartNumberA2 E1432-66502 2 4 PC ASSY-INPUT 28480 E1432-66502A4 E1432-66504 4 1 PC ASSY-LED 28480 E143

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

Assemblies: with option AYFA10/A11HP E1432A User's GuideReplacing Assemblies10-6

RefDesHP PartNumberCD Qty Description MfrCodeMfr PartNumberA2 E1432-66502 2 4 PC ASSY-INPUT 28480 E1432-66502A4 E1432-66504 4 1 PC ASSY-LED 28480 E143

Assemblies: with option 1D4A10/A11HP E1432A User's GuideReplacing Assemblies10-8

RefDesHP PartNumberCD Qty Description MfrCodeMfr PartNumberA2 E1432-66502 2 4 PC ASSY-INPUT 28480 E1432-66502A4 E1432-66504 4 1 PC ASSY-LED 28480 E143

Cables: without option AYF or 1D4RefDesHP PartNumberCD Qty Description MfrCodeMfr PartNumberW1 8120-6767 2 1 CBL-ASM CXL, 290MM 28480 8120-6767W2 8120

Cables: with option AYFRefDesHP PartNumberCD Qty Description MfrCodeMfr PartNumberW2 8120-6765 0 1 CBL-ASM CXL, 255MM 28480 8120-6765W3 8120-6766 1 2

Cables: with option 1D4RefDesHP PartNumberCD Qty Description MfrCodeMfr PartNumberW2 8120-6765 0 1 CBL-ASM CXL, 255MM 28480 8120-6765W3 8120-6766 1 2

Front PanelRefDesHP PartNumberCDQtyDescriptionMfrCodeMfr PartNumberMP200 E1432-00204 3 1 PNL-FRT, STANDARD 28480 E1432-00204MP201 E1432-00202 1 1 PNL-

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 panel1Remove top cover, see “To remove the top cover.” Gently disconnect cables from the printedcircuit assemblies. Using a T-8 to

Install the host interface librariesAfter the hardware has been assembled, the next step in installing the HPE1432A is to install the host interface l

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

5To replace the front panel with another that does not have its own side brackets, remove thebrackets from 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 2in “To remove the front panel

3Remove the top two assemblies by gently pulling them forward, releasing them from theconnectors.4Remove the remaining input assemblies.HP E1432A User

To remove the option AYF assembly1 Remove the top cover, see “To remove the top cover.” Disconnect the two cables leading to theA5 assembly and move c

To remove the option 1D4 assembly1 Remove the top cover, see “To remove the top cover.” Disconnect the three cables leading tothe A41 assembly and mov

To remove the A22/A24 assembly1 Remove the top cover, see “To remove the top cover.” Gently push the silver tabs outward andtilt the A22/A24 assembly

To remove the A1/A11 assembly1Remove top cover and input assemblies. See “To remove the top cover,” and “To remove theinput assemblies.”2AIf your modu

2B If your module has option AYF do the following: Remove the AYF option assembly, see“To remove the option AYF assembly.” Remove the 5 long and the 3

11Backdating11-1

To transport the module• Package the module using the original factory packaging or packaging identicalto the factory packaging.Containers and materia

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

Appendix ARegister DefinitionsA-1

The HP E1432A VXI RegistersThe HP E1432A 16 Channel 51.2 kSa/s Digitizer plus DSP is aregister-based VXI device. Unlike message-based devices which us

Address Read Write3EParameter 7 Register3C3AParameter 6 Register3836Parameter 5 Register3432Parameter 4 Register302EParameter 3 Register2C2AParameter

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

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

Data Ready: A one (1) indicates that there is at least one word (32 bits)of data available in the Send Data register. A zero (0) indicates that therei

q Control Register: A write to this register causes specific actions to be executedby the device. The actions are described in the following table.Bit

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

q IRQ Status Register: This read-only register indicates the reason for asserting theVME Bus interrupt. The format of the data is identical to that of

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

Writing 32-bit RegistersWhen writing to a 32-bit register using 8- or 16-bit modes, a simple cachingscheme is also employed. On any write not includin

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

In order to avoid contention and/or invalid data reads, there are certainrules that must be observed:1 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.1 Wait for Command/Parameter Ready true.2 Wait for Done true.3 I

DSP Bus RegistersThere are two 32-bit registers in the DSP bus address space. The VXIFPGA does not assert TA* when these registers are accessed.200A D

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

HHP E1432ATechnical Specifications4-16 Channel 51.2 kSa/sDigitizer plus DSPRev. April 1999HP E1432AFail AcsSourceCOLA ShutOut16 CHANNEL51.2 kSa/sDigit

Specifications2of12

ΩΩΩ≤3of12

2Getting Started With theHP E1432A2-1

Ω− −−− −≤ ≤ −Ω−Ω√√µ4of12

Ωµ√µOption 1D4 Arbitrary SourceSpecifications5of12

µ≥ Ω≥ Ω−−−6of12

(after 1 second settling, amplitude scale factor >0.001)Ω−Ω−7of12

−µΩOption AYF Tachometer InputSpecifications8of12

®®VXI System Level Specifications9of12

−10 of 12

++−+−−−++−+−−−++−+−−−+−+−−−11 of 12

Specification NoteSpecifications describe warrantedperformance over the temperaturerange of 0° to 50°C, after a15-minute warm-up from ambientcondition

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

NOTICEThe information contained in this document is subject to change without notice.HEWLETT-PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS

IntroductionThis chapter will help you to get your HP E1432A running and makingsimple measurements. It shows how to install the software libraries and

C-sizeOne of several possible sizes for VXI modules. The HP E1432A and HPE1433A are C-size modules.channel-dependent commandsCommands that are channel

Digital Signal Processing.DTB arbitration busThe HP E1432A does not use the arbitration bus. The arbitration bus ispart of the VXI specification and i

IRQInterrupt ReQuest.kSa/sKilo-Samples per second.LEDLight Emitting Diode.Local BusA high-speed port that Hewlett-Packard has defined as a standard by

RAMRandom Access Memory.register-based VXI deviceRegister-based devices communicate with the VXI Bus by way of registers.They must be programmed with

Soft Front Panel (SFP)A VXIplug&play program which provides and easy-to-use interface for theHP E1432A. It can be used in Microsoft Windows 95 or

VME BusAn industry-standard bus on the VXI backplane for module control, setupand measurement data transfers. For measurement data transfers, theLocal

INDEX!32-bit registers A-10writing A-114-channel input 4-7, 4-10, 5-2, 7-2parameters 4-78-channel input 5-7, 6-5, 7-58-channel input (break out box) 8

cable, break out box 8-5Cal 5-7cal connector 5-15calibration 5-15channel group 3-7channel ID 3-31, 4-4, 4-10, 4-29clock 3-20, 4-18external sample 5-14

external trigger input 7-2ExTrig 5-7, 7-5Ffailed LED 5-7, 6-5, 7-5features 5-2FIFO architecture 3-15filesheader 3-6, 4-3library 3-6, 4-3find module 3-

To install the VXIplug&play librariesSystem Requirements (Microsoft Windows95 and NT)• An IBM compatible personal computer with either Microsoft W

LLEDs 5-7, 6-5, 7-5level mode 3-26level, trigger 7-2libraries 2-2, 3-2installing 2-3, 2-5 - 2-6library files 3-6, 4-3library, host interface 4-2Local

protocolcommand/response A-12controller A-13DSP A-14VXI Bus dynamic configuration A-5ptman 3-35Qquery response/command register A-9RRAM 5-10RAM locati

source (continued)features 5-2firmware 6-5front panel 6-4LED 6-5LED’s 6-5parameters 4-8sample rate 3-17, 3-19trigger 3-24, 4-22span 3-17Splug&play

VXIplug&play (continued)library 3-2overview 3-3VXIplug&play library 2-2 - 2-3Wwait for done A-14Windows Help 3-5write command A-13HP 1432A Use

Need Assistance?If you need assistance, contact your nearest Hewlett-Packard Service Officelisted in the HP Catalog, or contact your nearest regional

Declaration of ConformityAccording to ISO/IEC Guide 22 and EN 45014Manufacturer’s name:Hewlett-Packard CompanyManufacturer’s address:Lake Stevens Inst

About this editionApril 1999: Sixth Edition. This edition was published to accommodate codeupgrades and the dropping of support for HP-UX 9.X.July 199

Getting Updates Via FTP (HP-UX)You can get the latest version of the HP E1432A software via FTP.However, note that the latest version may be an interi

To install the Windows VXIplug&play drivers for the HP E1432A(for Windows 95 and Windows NT).This procedure assumes that you have already installe

To install the HP-UX VXIplug&play drivers for the HP E1432A(for HP-UX systems):1 Log in as root.2 Insert the HP E1432A CD_ROM into the CD-ROM driv

The VXIplug&play Soft Front Panel (SFP)Using the soft front panel.If you are running the HP E1432A software in Microsoft Windows 95 orWindows NT,

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

DisplayThis button opens a dialog box in which you can specify how the data isdisplayed. For each trace you can specify an input channel (or OFF) anda

HP VEE example programsscope.veeThis program displays four channels with time record and FFT for eachchannel.The scope.vee program is located at \Hpe1

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

In This BookThe HP E1432A 16 Channel 51.2 kSa/s Digitizer plus DSP is a C-size VXImodule. “51.2 kSa/s” refers to the maximum sample rate of 51,200 sam

To use and modify scope.vee you need to be familiar with using the HPVEE program. Refer to HP VEE documentation if necessary. In ViewDetail mode you c

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 scrol

You can click on Alphnumeric in the Display menu to set up a box tospecify how to display the output of a function.Use HP VEE to look at the functions

Figure 2-6: minimum.vee (scroll to see entire display)HP E1432A User's GuideGetting Started With the HP E1432A2-15

Other HP VEE example programsThere are several other example programs that you can examine in thesame way that you looked at scope.vee. These programs

C-Language Host Interface Library example programsThe HP E1432A C-Language Host Interface Library comes with severalexample programs, which help demon

Running a demo program: semascope.cTo run this program, type:/opt/e1432/demo/semascopeThis program displays the time records for 32 channels (when hoo

Visual Basic example programsHP VEE and the C Host Interface Library can be used on both Unix andPC systems. In addition the PC can use Visual Basic.

3Using the HP E1432A3-1

IntroductionThis chapter shows how to use the HP E1432A using the VXIplug&playHost Interface Library.The Host Interface Library for the HP E1432A

What is VXIplug&play?Hewlett-Packard uses VXIplug&play technology in the HP E1432A. Thissection outlines some of the details of VXIplug&pl

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

The Soft Front Panel (SFP)The Soft Front Panel is a stand-alone Windows application, built on top ofthe VXIplug&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. Formore detailed information see the HP E1432A help text.Chann

Creating a Channel GroupThe function hpe1432_createChannelGroup creates and initializes a channelgroup. A channel group allows you to issue commands t

Multiple-module/mainframe MeasurementsGrouping of Channels/ModulesThe interface library for the HP E1432A is designed to allow programmingof several c

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 HP E1432A communicates withother HP E1432As through the TTLTRG lines. H

TABLE OF CONTENTSIn This Book i-iii1 Installing the HP E1432AInstalling the HP E1432A 1-2To inspect the HP E1432A 1-2To install the HP E1432A 1-3Insta

In the example above, Mainframe A contains the Slot 0 Controller for amultiple mainframe system. Mainframe A is connected to Mainframe B witha VXI-MXI

HP E1432AHP E1432AHP E1432AHP E1432AHP E1432ACableINTXMXI Bus(or HP E1431A)HP E1432AHP E1482BSlot 0ContollerVXI Mainframe ACable(or HP E1431A)(or HP E

Synchronization in Multiple-mainframe MeasurementsA TTL Trigger line between HP E1432As making group measurementskeeps all modules synchronized. This

Module FeaturesData Flow Diagram and FIFO ArchitectureThe illustration on the next page shows data flow in the HP E1432A. Inthis example there are fou

Input 1Input 3Input 2Input 4StaticRAMFIFOFIFO9600296002triggerLocalhostBusportVME BusLocal BusFIFOch 1ch 3ch 2ch 4ch 5(DRAM)triggercircularbufferBusBu

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

Table of Baseband Measurement Spans (Hz)samplefrequency(Fs) —>32000 32768 40000 40960number of÷2 stepswith ÷5 without ÷5with ÷5 without ÷5 with ÷5

Additional Notes on Measurement SpansBottom reference is 10 Hz, max span is 20 kHz.Top span 23000 Hz = 460 lines.To select a sample frequency for time

Measurement ProcessMeasurement Setup and ControlWhen the HP E1432A makes a measurement, the measurement itselfconsists of two phases: the measurement

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

3 Using the HP E1432AIntroduction 3-2What is VXIplug&play? 3-3Overview 3-3VXIplug&play drivers 3-3Manufacturer and model codes 3-4The Soft Fro

In the BOOTING state, the digital processors of the module load theirparameters, and their program. Once done, the module releases theSync/Trigger lin

Upon entering the ARM state the HP E1432A starts saving new data in itsFIFO. It remains in the ARM state until the Sync/Trigger line goes high. Ifthe

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

HP E1432A Triggering.The following is a short discussion of triggering for the HP E1432A.Triggering is defined as the transition from the armed state

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

Data Transfer ModesThe HP E1432A can be programmed to use either of two data transfermodes: overlap block mode and continuous mode. To help explain th

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

HP E1432A Interrupt BehaviorInterrupt SetupFor an example of interrupt handling see the program event.c in theexamples directory.The HP E1432A VXI mod

Once it has done this interrupt, the module will not do any more VMEinterrupts until re-enabled with hpe1432_reenableInterrupt. Normally, thelast thin

q Calling hpe1432_createChannelGroup to delete a group that is simultaneouslybeing used by non-interrupt-handler code.q Calling one of the read data f

4 The C-Language Host Interface LibraryIntroduction 4-2Header and Library Files 4-3Parameter Information 4-4Description of HP E1432A Parameters 4-4Par

After firmware is installed, and after a call to hpe1432_preset, all of theparameters (both channel-specific and global) in an HP E1432A module areset

New features of the HP E1432A/HP E1433A softwareThe following features have been added to the HP E1432A/HP E1433Asoftware since the previous edition o

Zoom (HP E1432A only)Up to now the HP E1432A has made only baseband measurements (fromzero to some frequency.) Zoom allows you to set a center frequen

Where to get more informationThere is more information available about the HP E1432A. This section willtell you how to access it and print it, if desi

4The C-Language HostInterface Library4-1

IntroductionThe Host Interface Library for the HP E1432A is a set of functions thatallow you to program the register-based HP E1432A at a higher level

Header and Library FilesThe /opt/e1432/lib directory contains several versions of the HP E1432AHost Interface library:lib1432.a A normal HP-UX archive

Parameter InformationDescription of HP E1432A ParametersSome parameters, such as range or coupling, apply to specific channels.When a channel ID is gi

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

The HP E1432A VXI Device 5-10Address Space 5-10Shared Memory 5-10Memory Map 5-10List of A16 Registers 5-12Trigger Lines (TTLTRG) 5-13Providing an Exte

Parameter Default Value Changesdecimation_oversample Off Waitdecimation_undersamp 1 Waitdelta_order 0.1 Waitfifo_size 0 (Use All DRAM) Waitfilter_sett

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

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 HP E1432A C-Language Host Interface Library takean ID parameter which specifies what channel or group of ch

For example, to set the range of the third input channel to 10 volts, thesource code would look something like:status = e1432_set_range(hwid, E1432_IN

Multiple-module/Mainframe MeasurementsGrouping of Channels/ModulesThe interface library for the HP E1432A is designed to allow programmingof several c

One module of the set of modules needs to be set to output the sync pulse.Tthe module with the lowest VXI logical address is called the “systemmodule”

Managing Multiple-mainframe MeasurementsIn a single mainframe measurement, the HP E1432A communicates withother HP E1432As through the TTLTRG lines. H

In the example above, Mainframe A contains the Slot 0 Controller for amultiple mainframe system. Mainframe A is connected to Mainframe B witha VXI-MXI

9 Troubleshooting the HP E1432ADiagnostics 9-210 Replacing AssembliesReplaceable Parts 10-2Ordering Information 10-2Direct Mail Order System 10-2Code

HP E1432AHP E1432AHP E1432AHP E1432AHP E1432ACableINTXMXI Bus(or HP E1431A)HP E1432AHP E1482BSlot 0ContollerVXI Mainframe ACable(or HP E1431A)(or HP E

Synchronization in Multiple-mainframe MeasurementsA TTL Trigger line between HP E1432As making group measurementskeeps all modules synchronized. This

Measurement ProcessMeasurement Setup and ControlWhen the HP E1432A makes a measurement, the measurement itselfconsists of two phases: the measurement

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

In the BOOTING state, the digital processors of the module load theirparameters, and their program. Once done, the module releases theSync/Trigger lin

Upon entering the ARM state the HP E1432A starts saving new data in itsFIFO. It remains in the ARM state until the Sync/Trigger line goes high. Ifthe

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

HP E1432A Triggering.The following is a short discussion of triggering for the HP E1432A.Triggering is defined as the transition from the armed state

Data Transfer ModesThe HP E1432A can be programmed to use either of two data transfermodes: overlap block mode and continuous mode. To help explain th

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