Evaluation Board Instruction Manual WaveVisionDigital Interface B

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Evaluation Board Instruction Manual WaveVisionDigital Interface B

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Evaluation Board Instruction Manual
WaveVisionDigital Interface Board
1999 National Semiconductor Corporation
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Table Contents Introduction. Quick Start Functional Description. Board Outputs. Board Control. Data Memory. Computer Interface. Power requirements. Modes Operation Computer (Automatic) Mode. Manual (Stand Alone) Mode. Software Installation Installing Digital Interface Board Board Set-up. Quick Check Board Functions Troubleshooting Exploring Waveform Basic Waveform 7.1.1 Looking Frequency Response. 7.1.2 Frequency Triangle Wave Input. Plot. 7.2.1 Dynamic Performance Estimates. 7.2.2 Bandwidth Estimation. Histogram Computer-Board Communications Circuit Description Hardware Schematics Indicators Adjustments Board Input/Output 10.0 Setting Program Switch 11.0 Saving Retrieving Files 11.1 Binary Files 11.2 ASCII Files. 12.0 Evaluation Board Specifications 13.0 Evaluation Board Bill Materials APPENDIX WaveVisionScreens.
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Introduction Digital Interface (order number WAVEVISION BRD) consists WavevisionDigital Interface Board, 3.5" program diskette, this manual. designed ease evaluation design-in various National Semiconductor analog-to-digital converters when used conjunction with evaluation boards that designed plug into this board. Digital Interface Board operated either modes: Computer mode Manual mode. Computer mode, evaluation converters simplified connecting product evaluation board given converter Digital Interface Board, which connected personal computer through serial communication port. Digital Interface Board used with WindowsTM-based WaveVisionsoftware, which operates under Microsoft Windows later. digitized signal captured displayed Computer monitor dynamic waveform. Digital Interface Board provides programmable clock converter, stores converted data words) conversion rate, uploads contents host computer WaveVisionsoftware. WaveVisionsoftware perform captured data. display also shows dynamic performance form SNR, SINAD, SFDR data. histogram captured data obtained well. histogram display indicates standard deviation data, first missing codes any) data, code with highest number hits many hits has. Manual mode, board does recognize commands from computer (indeed, computer does even need connected board). Continuous data available connector HDR1 pressing "Execute" button causes capture data spooling that data RS-232 port. reference Programming Switch throughout this manual, "OFF" indicates open switch logic high; "ON" indicates closed switch logic low.
Quick Start Digital Interface Board comes ready operation. Refer Figure location various components board. positions through "OFF" position clock frequency lowest, Table other frequencies. Connect product evaluation board connector J14. Digital Interface Board will receive power through J14. Connect interconnecting cable from board connector communications port your interconnecting cable cable without pins swapped, jumpers should connected their default positions, shown Figure these pins swapped, cable null modem type. null modem cable used pins jumper pins jumper shorted together. positions indicated Table frequency clock oscillator used turn power connected product evaluation board. should indicating presence clock signal. position "OFF" position. should indicating that board Computer mode. Copy software (WAVEVSN.EXE) from diskette desired directory Connect signal appropriate amplitude Analog Input evaluation board that connected J14. product evaluation board manual. With WaveVisionsoftware, select Communications Port that used (ALT, then corresponding communications port used). Capture data pressing CTRL-X. Yellow will flash momentarily then stay indicate that data transfer occurring.
Perform data that acquired pressing CTRL-F.
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TPG4
12345678
Default Detail Underlined switch numbers indicated those switches that "ON".
12345678
TPG1 TP_ACQ_CLK
RP15 RP14
RP12 RP16
HDR1 TPG4
TPG2
RP17
Default Detail
NATIONAL SEMICONDUCTOR DATA EVAL BOARD
RP10
RP11
RP13
RP18
RP19
Figure Component Location.
Functional Description Refer block diagram Figure schematic Figure Figure components Figure major component locations. Board basic functions controlled program switch Three LEDs provided provide ready indication board functioning status, described Table board modes operation, mentioned Section described section heart Digital Interface Board which programmed control operation board. sets clock frequency under test selecting either board clock (Y1) external clock source connected connector using on-board clock, reads positions through switch determine clock divider. should 80MHz, 100MHz 120MHz clock oscillator. Correct setting positions important obtain error free RS-232 communications. Because many ADCs digitize signals much faster rates than data uploaded computer, data gather stored into (U2) output data rate ADC. Once required amount data been loaded into RAM, reads that data uploads host RS-232 serial link
Board Outputs. digital data from converter board, well clock signal this data, available connector HDR1. This connector even numbered pins grounded suitable connecting ribbon cable board. DB-9 connector RS-232 port connection computer. Board Control. performs control functions board. also contains registers logic used move data. functions this device are:
Select External Clock Input select onboard clock oscillator with desired divider. Enable writing acquired data RAM. Accept commands over RS-232 link when Computer mode (board controlled from connected RS-232 link). Upload data over RS-232 link upon command. Enable when active clock source present. Enable when Computer mode. Enable yellow when data being transferred over RS-232 link.
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SWITCH POSITIONS-> CLOCK FREQUENCY
[don't care]
MODE Auto/Man Auto
CLOCK FREQ
CLOCK OSC. USED Osc. Freq
Table Programming Switch (S1) Functions (Computer Mode) SWITCH POSITIONS-> CLOCK FREQUENCY OSC. USED Must 80MHz MODE Auto/Man
CLOCK FREQ
EXECUTE FUNCTION Bytes
1024 2048 4096 8192 8192 8192
Table Programming Switch (S1) Functions (Manual Mode) Data Memory. data memory consists single word chip, Data written directly from product evaluation board 74F574 latches U14. During this write mode, address incremented sequencer Data read from sent over RS-232 connection. number words sent determined instructions from host computer when Computer mode, programming switches switch when Manual mode. Table Computer Interface. board communicates with host computer through RS-232 interface. serial data path through DB-9 connector located left side board. proper communications data rate, Programming switch S1-7 (logic high) 80MHz crystal used, (logic low) 100MHz 120MHz oscillator used. S1-6 (logic low) 100MHz oscillator used, (logic high) 120MHz oscillator. other clock rates will allow proper communication over RS-232 line. external clock used, communications over RS-232 link possible unless external clock source 80MHz, 100MHz 120MHz switches S1-6 S1-7 appropriately. Power requirements. This board requires single supply, which supplied from product evaluation board through connector front digital interface board. Individual product evaluation boards require other voltages well.
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Modes Operation board capable operating modes: Manual (stand-alone) mode Computer (automatic) mode. Computer (Automatic) Mode. Computer mode operation, control board operation through personal computer running WaveVisionunder Windowsand connected evaluation board through serial (RS-232) port. functions switch described Table number words conversion data sent board computer determined codes that sent computer board, clock frequency strictly controlled first three switches described Table board will acquire data then spool through RS-232 port when appropriate command received board. WaveVisionsoftware, upon receiving data, displays computer monitor) waveform represented acquired data. WaveVisioncan also calculate display with figures SNR, THD, SINAD SFDR.The program also display histogram captured data. histogram display indicates standard deviation data, first missing codes any) data, code with highest number hits many hits has. Please note that histograms taken small amount data little meaning. this reason, best take maximum number samples before obtaining histogram. this mode permissible 80MHz, 100MHz 120MHz clock oscillator. sure switch positions (S1-6 S1-7) according Table clock oscillator frequency used. clock frequency selected with positions settings which will determine much clock oscillator divided before being sent evaluation board, described Tables following Computer mode functions:
sure that 80MHz, 100MHz 120MHz clock oscillator socket Digital Interface Board. Remove clock oscillator that present product evaluation board. Program (DIP) switch follows: S1-5 don't care S1-6 120MHz Crystal S1-7 80MHz Crystal S1-8 other frequencies
S1-1 S1-2 S1-3 S1-4 don't care
Table Program Switch functions. adjustments product evaluation board according that board's instructions. WaveVisionto board (ALT, CTRL-B) select desired number samples acquire. Remember that clock frequency board Program Switch positions Click "OK" button. Acquire data pressing ALT, CTRL-X click Acquire icon (See Appendix). Once data transfer complete, portions waveform selected viewing clicking mouse pointer corner area viewed dragging opposite corner. Restore full display right clicking anywhere display.
desired, performed captured data pressing ALT, CTRL-F click icon (See Appendix). histogram also obtained from captured data pressing ALT, CTRL-H click Histogram icon (See Appendix). Manual (Stand Alone) Mode. Manual mode operation, digital word stream clock available HDR1 right edge board. Commands over RS-232 link ignored board this mode, turned indicate board Manual mode functions switch described Table Select this mode closing (turning OFF) position (S1-8). clock always enabled this mode data spooled over RS-232 port only after switch pressed located center board, just right external clock input connector J2). Signals Digital Output Header (HDR1) disabled during RS-232 transmission. www.national.com
Select External Clock Input internal clock source clock with desired divider Switch Acquire data store RAM. Upload data over RS-232 link. Enable when selected (on-board external) clock source present. Enable when Computer mode. Enable yellow when sending receiving data over RS-232 link.
Follow these steps operate board Computer mode. Refer Table Figures
Software Installation WaveVisionsoftware requires 300kb hard drive space. Insert disk into 3.5" floppy drive your computer. Copy WAVEVSN.EXE software desired directory. desired Program Group Windows 3.1, Program Manager type click "OK". appropriate Description, such "WaveVision". There need enter Group File. Program Item Windows 3.1, Program Manager type click "OK". Enter Description want Icon about add. might call "WaveVision" "ADC Evaluation". Click BROWSE find WAVEVSN.EXE file added step above, double click Click "Change Icon" button click "OK". Click "OK" again. shortcut Icon Windows95/98, drag WaveVision Icon from Windows Explorer your desktop.
Program Switch S1-8 verify that indicating board Computer mode operation. jumpers their default positions, shown Figure opposite positions null modem cable (see Section 2.0, step Connect oscilloscope probe verify presence clock signal. WaveVisionsoftware your computer. Select Communication port (ALT, then corresponding comm. port used. Check communications (ALT, CTRL-K). "Board Found" dialog should produced.
Acquire data (ALT, CTRL-X). Yellow will come indicate data transfer progress. Data transfer take seconds. When data transfer complete, data window should show single horizontal line. exact code represented this line will depend upon setting offset other controls product evaluation board. Supply sine wave Analog Input product evaluation board. This signal should have frequency about 1MHz amplitude appropriate product evaluation board used. Repeat step above. When transfer complete, data window should show many sine waves. display show nearly solid area (Figure which O.K. With mouse, click drag select portion displayed waveform.
Installing Digital Interface Board Digital Interface Board comes pre-tested ready use. Little preparation necessary beyond installing software, connecting running Windowsand Product Evaluation Board with applied power begin using Board Set-up evaluation board requires single power supply 1.0A, which supplied through product evaluation board interface J14. ±12V supplies that available through available future possible used this time. Connect product evaluation board apply power that board. Connect serial cable between available (RS-232) Serial Port your computer. Quick Check Board Functions Refer Figure locations components board. point expected response obtained, section Troubleshooting. Perform steps setup procedures Section 4.1, except S1-8 should Connect product evaluation board turn power Verify that LEDs
Figure WaveVisioncaptured display 3.58 sine wave 20MHz clock frequency. input signal should filtered remove harmonic distortion should stable prevent averaging data process. signal excursion should cause minimum maximum output codes come near, their extremes avoid signal clipping distortion.
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sure that waveform does reach minimum maximum output codes (avoid clipping output). Optimum performance measurements occur when lowest highest codes digitized near reach output code limits. product evaluation board, adjust offset gain controls and/or signal input level board output swing into desired range.
Problem: converter seems exhibit more distortion and/or noise than expected. sure that signal does have excessive amplitude offset. sure output signal clipped). sure that input signal causes output codes come near quite reach possible code limits ADC. sure clean signal presented ADC. Even some fairly expensive generators have more distortion noise than some ADCs. will probably necessary filter analog input product evaluation board.
Figure display showing performance ADC1175. From this display noise floor measured spurious signals identified.
Exploring Waveform WaveVisionsoftware, together with Digital Interface Board Product Evaluation Board tool video designer's toolbox. This evaluation combination used capture dynamic signal, display computer screen measure performance parameters. Appendix WaveVisionscreen drawings software operation. Basic Waveform After Digital Interface Board uploaded captured waveform WaveVisiondisplays this waveform computer monitor. Remember that waveform appear very well defined unless sampling rate much higher than input frequency. 7.1.1 Looking Frequency Response video multiburst signal used evaluate system frequency response. This approach will show overall system response, including that input signal conditioning. video multiburst signal bursts fixed frequencies, after other, that usually start increase MHz, depending upon video standard. Figure shows captured multiburst signal.
Select (ALT, CTRL-F) display will show measurements SINAD, SNR, SFDR (See Figure easing verification performance. Troubleshooting Problem: "Check Comm failed. Board Available. Creating Simulated Data." message displayed. This means that communication unsuccessful. Check following: Digital Interface board connected through RS-232 serial port properly powered product evaluation board connected. sure S1-8 (open). should indicate that board Computer mode. sure switch positions indicate frequency oscillator Table sure cable connections solid. sure correct communication port selected. sure select type cable used, discussed Section 2.0, step using external clock source, sure that input levels levels. Ensure that expected clock source selected S1-1 through S1-3. Table
Problem: clock signal off.
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Monotonic Signal
Non-Monotonic Signal
Figure Monotonicity means codes continually increasing decreasing.
Figure This multiburst signal shows frequency response system through ADC.
When digitizing signals with rise fall times slow enough result more than conversion result same code sequence, normal have some code uncertainty when input code transition point. Figure This condition normal when input signal moves very slowly compared with sampling rate.
Figure Code uncertainty when input voltage near code transition point. Figure This multiburst signal shows frequency horizontal axis, allowing measurement bandwidth required burst each frequency. This spectrum whole signal indicates bandwidth required pass this signal without distortion.
individual preset frequencies multiburst signal determined performing data seen Figure individual frequencies are, this case, 3.58 MHz. dynamic data right spectrum plot useless such data. 7.1.2 Frequency Triangle Wave Input frequency (about 0.1% clock rate) triangle wave will provide general information performance. When voltage ramp digitized, code sequence shows increasing codes peak level, decreasing codes minimum level, depending upon whether slope positive negative. waveform with always increasing decreasing codes said monotonic, Figure converter that more instances codes going wrong direction, compared with input signal, said non-monotonic. resulting output shown Figure
Plot dynamic performance estimates SINAD, SNR, SFDR (Spurious-Free Dynamic Range) shown with plots only meaningful sine wave input only accurate extent that input waveform clean (contains single frequency) stable.
150pF 150pF 22pF
Source
1.5uH
2.2uH
2.2uH
220pF
560pF
560pF
220pF
Load
Figure This elliptic filter, with cutoff frequency about 4MHz, used input frequencies 2MHz 4MHz.
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56pF
56pF
4.7pF
data display will show frequency dependent amplitude variation. Histogram histogram captured data obtained clicking histogram icon (see appendix), pressing CTRL-H, pressing ALT-P, histogram indicates number times each code occurs data. histogram could misleading there enough samples taken. this reason suggest that take maximum available number samples before evaluating histogram. right histogram will standard deviation data, number missing codes (zeros) data, well code with most number hits (occurrences) many hits that more than code this maximum number hits, lowest code with that maximum number hits indicated. Figure histogram simulated data that would result when trying acquire data system could detect board connected computer. "MAX 1:29" right means that maximum number codes lowest code with that number code
Source
1.5uH
2.2uH
2.2uH
150pF
270pF
270pF
150pF
Load
Figure This elliptic filter cutoff frequency about 11MHz suitable input frequencies 5MHz 10MHz.
Harmonics interfering signals attenuated inserting appropriate filter Analog Input. elliptic filter Figure example suitable filter input frequencies 2MHz about 4MHz. This filter intended square wave input, reducing higher harmonics negligible levels. attenuation about 40dB MHz. elliptic filter Figure example suitable filter input frequencies 5MHz 10MHz. These filters should driven generator Ohms source impedance terminated with Ohms. Since these filters attenuate harmonics well, best performance often achieved with square wave input this filter. input resistor shown here generator impedance output resistor part board input termination. plot provides information from captured signals other than single frequency sinusoids. example shown Figure 7.2.1 Dynamic Performance Estimates dynamic performance indicated SINAD, SNR, SFDR estimates rather than hard fast figures because their accuracy depends upon much ADC's dynamic input range used, many samples taken. example, input reduced below full scale swing such that maximum minimum codes obtained output are, 8-bit ADC, rather than full scale values only about code range used. result apparent degradation SNR. other hand, input exceeds input dynamic range such that and/or bottom input signal clipped ADC's output, THD, SFDR SINAD will degraded. Apparent performance also limited purity input signal used. Some finest signal generators available clean enough really show performance possibility given ADC. 7.2.2 Bandwidth Estimation constant amplitude frequency sweep applied Analog Input product evaluation board signal input digitized displayed,
Figure Histogram simulated data. Note display number missing codes (zeros) code with most hits (code this case) number occurrences that code (29).
Computer-Board Communications Communication between board computer through RS-232 connection connector Communications 9600 baud, data bits, stop bit, parity. address incremented fall each output clock from data clocked into rising edge clock. (U1) counts number words clocked into sure that data written over some previous data. Once data been acquired, board responds accordance with request from host computer. www.national.com
Position switch determines Manual Computer mode operation desired, changing required mode when switch position changed. Instructions from ignored when Manual mode. Circuit Description Hardware Schematics Figure shows block diagram Digital Interface Board. programmable logic device) controls interprets instructions from host that operating under WaveVisioncontrol. Communication between board host computer through RS-232 link. After receiving command from host board interprets instructions, performs operation requested returns results. board operates INDICATOR COLOR YELLOW LOCATION Near below Oscillator
from single supply supports ADCs with resolutions bits with appropriate product evaluation board. hardware schematic divided into sections: Logic Section Data Power Interface Section. Indicators Adjustments board three LEDs assist determining current state board. Table shows these LEDs. Board Input/Output There electrical inputs Digital Interface Board (refer Figure Data Power Interface (J14) RS232 Port (P1). MEANING Presence selected clock signal Computer mode RS-232 data transfer
Near Clock connector right
Table Indicators
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Clock Phase Control RS-232 Interface
Data
Data Latch
Data
Controller (EPLD)
Address
Clock Data Header Data Power Interface Connector Data
Figure Digital Interface Board Block Diagram
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CLOCK RATE MEMORY SIZE DIP-8 4.7k DVCC 4.7K 10uF, EXECUTE 1N4148 DVCC Altera DVCC
HDR1 33pF HEADER
DVCC 80MHz CILLATOR CLOCK ENABLED 100MHz/80MHz COMPUTER/MANUAL
GCKL OEIN GCLRN
TR2OUT TR1OUT ROUT ROUT DVCC 1.0uF 1.0uF 1.0uF TR2IN TR1I
Commo
NULL/DTE
1.0uF NULL/DTE DS14C232CM
DVCC
RP12
RP10
YELLOW A[0.14]
TC551666AJ-15
7128J
DVCC capacitor near each power 0.1uF RP13 4.7k RP17 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF TP_ACQ_CLK
D[0.11]
74HC574
DVCC
RP15
RP14
RP16 4.7k 4.7k
RP11 74HC574
E[0.5]
B[0.11]
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Figure Digital Interface Logic
E[0.5]
33uF,
B[0.11]
RP19
DVCC
0.1uF
4.7k
RP18
DVCC
0.1uF
4.7k
DVCC
Altera DVCC
CHOKE
CHOKE
200uF,
FEMALE EURO (DIN) CONNECTOR
+12V
-12V
33uF,
Figure Data Power Interface www.national.com
10.0 Setting Program Switch Program Switch (DIP Switch used mode operation (Computer Manual) with S1-8, on-board clock oscillator frequency with S1-6 S1-7, memory size (number bytes spooled after depressed Manual mode only) with S1-4 through S1-6 clock frequency source with switches S1-1 through S1-3. Table indicates functions Program Switch (S1). Position Program switch (S1-8) determines whether control manual through RS-232 link. Close this switch manual operation. Open this switch computer control through RS-232 link. When Computer mode operation (S1-8 open), commands received over RS-232 link, turned indicate board Computer mode. When Manual mode. digital word stream Digital Output port (HDR1). Switch positions through used clock frequency selecting dividing External Clock Input (J2) dividing on-board clock frequency, indicated Table 11.0 Saving Retrieving Files WaveVisionallows save data formats. binary file, other ASCII file. Appendix locations icons mentioned below. 11.1 Binary Files save binary file later WaveVisionTM, either click save icon, enter ALT, enter CTRL-S. will prompted file name first time save given data.
binary file contains information program settings well data. retrieve binary file WaveVisionTM, click Open File icon, enter ALT, enter CTRL-O. will prompted name file wish retrieve. 11.2 ASCII Files export ASCII file later another program, such Excel, must enter ALT, will prompted file name. ASCII file will contains only data with data point line. import ASCII file, whether created with WaveVisionor with other program utility, enter ALT, will prompted name file wish retrieve. Remember that imported files must have data point line. 12.0 Evaluation Board Specifications Board Size: 6.5" 5.88" (16.5 Power Requirements: Communications Baud Rate: 9600 Data Bits: Stop Bits: Parity: none Clock Freq. Range: External Crystal MHz, 100MHz 120MHz conversion Memory: Words
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13.0 Evaluation Board Bill Materials C32, C42, C43, C44, C45, C46, C47, C48, C,49, C56, C71, C62, C63, C64, C65C66, C67, C68, C70, HDR1 -J14 R71, R72, R74, R77, R78, RP8, RP10, RP11, RP12, RP16, RP17, RP18, RP19 RP2, RP13, RP14, RP15, TP2, TPG1, TPG2, TPG3, TPG4 Memory U12, RS232 Interface U13, Latch Socket
10µF, 33µF, 0.1µF 200µF, 33pF 1N4148 Yellow Choke 24-Pin Post Header 3-Pin Post Header Shorting Jumper 96-Pin Euro Connector Plug Choke DB-9 Plug 4.7k 4.7k 4.7k Switch Push-Button Switch, SPSTNO Breakable Header, Single EPM7128ELC84-15 TC551664AJ-15 DS14C232CM 74HC574M 80MHz Oscillator
Digi-Key PCS1106CT-ND Digi-Key PCS3336CT-ND Digi-Key P4923-ND Nemco PCT220 Digi-Key P4962-ND Digi-Key P4843-ND Various Yellow Digi-Key M2204-ND Digi-Key S1011-24-ND Digi-Key ARF1177-ND Digi-Key A19351-ND Digi-Key S9001-ND Digi-Key H5096-ND Digi-Key M2204-ND Digi-Key A2096-ND Type 1206 Type 1206 Type 1206 Type 1206 Type 1206 Type 1206 Type 1206 Type 1206 Type 1206 766163471G 766163101G Bourns 4309T-101-4701 Digi-Key A5208-ND Digi-Key CKN9016-ND CKN9017-ND Digi-Key S1021-05-ND Altera Toshiba National Various Digi-Key CTX-138-ND 4-pin full-size oscillator socket
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APPENDIX WaveVisionScreens
WaveVision Menu Icon Description
avevision Samp
Edit
View
Prodecure Options
Window
Help
Histogram Acquire Plot Data Setup Copy Save Open File
(same ALT, (same ALT, (same ALT, (same ALT, (same ALT, (same ALT, (same ALT, (same ALT,
CTRL-H) CTRL-F) CTRL-X) CTRL-B) CTRL-S) CTRL-O) CTRL-N)
pres
Opening Wavevisionfile done same manner other WindowsTM-based program. wish import data created another application, such spread sheet, below. Copy command will copy contents active window without Title bar. Setup command used WaveVisionyou want
WaveVision Menu
Wavevision
Edit
View
Prodecure Options
Window
Help
Index Using Help About aveVision. Full Area. Display. Copy Graph Ctrl+
Open. Close Save Save Import Data. Export Data. Exit ecent File Ctrl+N Ctrl+O Ctrl+S
Click Click+ Drag Click Input Cascade Arrange Icons Data
pres
IMPORT EXPORT commands (under FILE menu) used retrieve text file save file text, respectively. This differs from SAVE OPEN commands, which work with files specifically formatted WaveVisiononly. Currently, there on-line help available.
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WaveVision Procedure Menu
evision Sample
Edit
Procedure ions
Board etup.
indow
Setup
Check Communications Acquir Data Hist ogram
Ctrl+ Ctrl+
isition Optio Crysta Sele ctio
Cance
ADC1175 WaveVision
Time Error
Rate:
les:
ADC1175 WaveVision ADC1175 WaveVision Board Found. Communications successful!
Board respond with correct protocol
With board connected, this notice seen when check communications.
With board connected, this sequence notices seen check communications
ADC1175 WaveVision
Check Comm failed. Board available Creating Simulated Data.
With board connected, this notice seen when acquire data. Upon clicking "OK" pressing Enter key, simulated sine wave displayed.
Help, pres
WaveVision Options Menu
evision Sample
Edit
Prodecure ions oolbar
indow
Help
Tool
Com1 Com2 Com3 Com4 ions
Options
Data Blackman Harris Flat Hamm Hanning Windowing Number Harm onics Cancel
Default Values shown here (Flat Top, Harmonics).
Windowing" should only used with synchronous data.
Status
Help, pres
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Sampled Data Data Display Options
Sampled Data display
Title: Axis Units Samples Seconds Sampling Rate this data (MHz) Vmax Vmin Axis Units Converter Codes Volts 4.096 -4.096 Cancel
This dialog isobtained double clicking sampled data plot. allows title displayed waveform, Axis Axis units (reference?) voltage levels.
Data display
Title: Axis Units Numbers Frequency Sampling Rate this data (MHz) Cancel
This dialog obtained double clicking plot. allows title /Axis units.
WaveVision Data Display Examples
These examples displays obtained with Digital Interface Board working with ADC1175 Product Evaluation Board. input frequency 3.58MHz input amplitude board 590mV (RMS). This amplified board nearly 2VP-P ADC1175 input.
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Digital Interface Board intended product evaluation purposes only intended resale consumers, authorized such designed compliance with European Directive 89/336/EEC. WaveVisionis trademark National Semiconductor Corporation. National does assume responsibility circuitry software supplied described. circuit patent licenses implied.
LIFE SUPPORT POLICY NATIONAL'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT NATIONAL SEMICONDUCTOR CORPORATION. used herein: Life support devices systems devices systems which, intended surgical implant into body, support sustain life, whose failure perform, when properly used accordance with instructions provided labeling, reasonably expected result significant injury user. critical component component life support device system whose failure perform reasonably expected cause failure life support device system, affect safety effectiveness.
National does assume responsibility circuitry described, circuit patent licenses implied National reserves right time without notice change said circuitry specifications.
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National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com
National Semiconductor Europe Fax: 80-530 Email: europe.support@nsc.com Deutsch Tel: 80-530 English Tel:
National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com
National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507
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Evaluation Board Instruction Manual WaveVisionDigital Interface B

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