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Chapter 2

BNC-2080 Board

© National Instruments Corporation

2-15

BNC-208X Series User Manual

Amplitude

Normalized Frequency

1

dB

 |                 |                 |                 |                 |                 |   

 0.1               1               10            100            1,000      10,000

(f  )

0.1

0.01

0.001

0.0001

0

-20

-40

-60

-80

c

Figure 2-12.  Normalized Frequency Response of Lowpass Filter

When measuring low-frequency signals (about 4 Hz), if you have 400-Hz noise on your inputs, you can
add a lowpass filter with a cutoff frequency of 4 Hz.  The 400-Hz noise then attenuates by 40 dB.  Notice
that your 4-Hz signal also attenuates, but by only 3 dB.  Do not neglect any potential attenuation of
signals of interest by this low-order filter.

You must also choose the filter component values.  The resistance or the capacitance can be selected
arbitrarily; one value determines the other.  Picking the capacitor first and letting its value determine the
resistance required is preferable because more standard resistor values are available.  If a capacitance of 1

µ

F is available, the resistance is (by substitution into Formula 2-1) 39,789 

Ω

, or about 39.8 k

Ω

. This

resistance must be divided by two to get the resistor value on each input of a differential channel.
Therefore, in this example, each input has a 19.89-k

Ω

 resistor (or the closest standard value) in its series

positions, E and F.  The closest standard 5% tolerance resistors are 20 k

Ω

.  The closest standard 0.5%

resistors are 19.8 k

Ω

.  National Instruments recommends using 1% or better tolerance resistors in this

application because differences between the resistor values degrade the common-mode rejection ratio
(CMRR).  Figure 2-13 shows both the schematic and the component placement for a 4-Hz lowpass filter
placed on differential input Channel 1.  If the input signal source is floating, a bias return resistor must be
placed in the D position (R15 in this case).

The BNC-2080 board open component locations do not facilitate R-C lowpass filters with the
MIO-16 board configured for single-ended inputs.  Therefore, if the MIO-16 board is configured for
single-ended inputs, lowpass filters must be built on the custom breadboard area.

Содержание BNC-208X Series

Страница 1: ... Copyright 1991 1994 National Instruments Corporation All Rights Reserved BNC 208X Series User Manual Analog BNC Breakout Boards September 1993 Edition Part Number 320407 01 ...

Страница 2: ...tria 0662 435986 Belgium 02 757 00 20 Canada Ontario 519 622 9310 Canada Québec 514 694 8521 Denmark 45 76 26 00 Finland 90 527 2321 France 1 48 14 24 24 Germany 089 741 31 30 Italy 02 48301892 Japan 03 3788 1921 Mexico 95 800 010 0793 Netherlands 03480 33466 Norway 32 84 84 00 Singapore 2265886 Spain 91 640 0085 Sweden 08 730 49 70 Switzerland 056 20 51 51 Taiwan 02 377 1200 U K 0635 523545 ...

Страница 3: ...o event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMER S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART O...

Страница 4: ...r or application designer Any use or application of National Instruments products for or involving medical or clinical treatment must be performed by properly trained and qualified medical personnel and all traditional medical safeguards equipment and procedures that are appropriate in the particular situation to prevent serious injury or death should always continue to be used when National Instr...

Страница 5: ... 2080 board in detail including its function specifications compatibility connection mounting and application notes Chapter 3 BNC 2081 Board describes the BNC 2081 board in detail including its function specifications compatibility connection mounting and application notes Chapter 4 Installation and Connections explains how to install and make connections to the BNC 208X Series boards TheCustomer ...

Страница 6: ...ns for units of measure in this manual Prefix Meaning Value µ micro 10 6 m milli 10 3 k kilo 103 M mega 106 The following abbreviations are used in this manual A amperes C Celsius dB decibels degrees F farads fc cutoff frequency Hz hertz in inches m meters Ω ohms percent π pi V volts W watts Acronyms The following acronyms are used in this manual AC alternating current CMRR common mode rejection r...

Страница 7: ...IO 16 User Manual part number 320295 01 Lab NB User Manual part number 320174 01 IBM PC XT AT users AT MIO 16F 5 User Manual part number 320266 01 AT MIO 16 User Manual part number 320476 01 Lab PC User Manual part number 320205 01 Lab PC User Manual part number 320502 01 PC LPM 16 User Manual part number 320287 01 IBM PS 2 Micro Channel users MC MIO 16 User Manual part number 320130 01 Customer C...

Страница 8: ... 2 7 Storage Environment 2 7 Board to Board Cabling 2 7 Mounting 2 9 Application Notes 2 9 Soldering and Desoldering on the BNC 2080 Board 2 9 Channel Configurations 2 9 MIO 16 Analog Input 2 9 Connecting Nonreferenced or Floating Signal Sources 2 13 Differential Inputs 2 13 Single Ended Inputs 2 14 Connecting Ground Referenced Signal Sources 2 15 Differential Inputs 2 15 Single Ended Inputs 2 15 ...

Страница 9: ...for the BNC 2080 and the BNC 2081 4 1 Installing the SC 205X Series Cable Adapter Boards 4 2 Installing the SC 207X General Purpose Termination Breadboards 4 2 Rack Mounting 4 2 External Power Connection If Necessary 4 5 BNC 208X Series Board Connection 4 6 Signal Connections 4 7 Ribbon Cable Connectors 4 7 Rack Mount Chassis Cover Attachment 4 7 Appendix Customer Communication A 1 Index Index 1 F...

Страница 10: ... 2 19 Analog Output Schematic for DACs DAC0 OUT Shown 2 23 Figure 3 1 BNC 2081 Analog Breakout Board 3 1 Figure 3 2 BNC 2081 Board Parts Locator Diagram 3 2 Figure 3 3 Onboard Equivalent Circuit 3 3 Figure 3 4 W1 Jumper Settings 3 4 Figure 3 5 Direct Connection between a Lab Board and the BNC 2081 Board 3 7 Figure 3 6 Connection between a Lab Board the BNC 2081 and the SC 2071 Board or the Connect...

Страница 11: ...X Series Boards 1 1 Table 2 1 Switch S5 Settings for National Instruments Data Acquisition Boards 2 3 Table 2 2 DIFF Mode Channel Component Positions 2 5 Table 2 3 Data Acquisition Boards Used with the BNC 2080 Board 2 7 Table 3 1 Component Positions in Each Channel 3 4 Table 3 2 Data Acquisition Boards Used with the BNC 2081 Board 3 6 ...

Страница 12: ...currently be used with the BNC 208X Series boards Table 1 1 Data Acquisition Boards for Use with BNC 208X Series Boards NB Series Macintosh NuBus MC Series IBM PS 2 PC and AT Series PC XT AT Lab Series PC XT AT and Macintosh NuBus BNC 2080 NB MIO 16 NB MIO 16X MC MIO 16 AT MIO 16 AT MIO 16D AT MIO 16F 5 AT MIO 16X PC LPM 16 BNC 2081 Lab LC Lab NB Lab PC Lab PC Note When a board is referred to as a...

Страница 13: ...ral purpose termination breadboard in a 19 in rack mount chassis You can mount your BNC 208X Series board on the left or right side of the rack mount Mounting the BNC 208X Series board on the left side and running the cable under the BNC 208X Series board to connect to the any of the SC Series boards will make access to both boards easier Figure 1 2 shows the BNC 208X SC 207X SC 206X and SC 205X S...

Страница 14: ...r 0 5 m NB1 cable 181635 01 180524 05 BNC 2081 kit with 1 0 m cable 776599 10 BNC 2081 board 50 conductor 1 0 m NB1 cable 181635 01 180524 10 BNC 2081 without cable 776599 90 BNC 2081 board 181635 01 You can identify which version of the BNC 208X Series kit you have by looking up the part number in the preceding table In addition to the board each version of the BNC 208X Series kit contains the fo...

Страница 15: ...0 m cable SC 2060 and 26 conductor cable 0 2 m cable 0 4 m cable SC 2061 and 26 conductor cable 0 2 m cable 0 4 m cable SC 2062 and 26 conductor cable 0 2 m cable 0 4 m cable SC 2050 and 50 conductor cable 0 5 m cable 1 0 m cable SC 2051 and 50 conductor cable 0 5 m cable 1 0 m cable SC 2052 and 50 conductor cable 0 5 m cable 1 0 m cable SC 2053 and 50 conductor cable 0 5 m cable 1 0 m cable 77629...

Страница 16: ...lectrostatic damage to the board Several components on the board can be damaged by electrostatic discharge To avoid such damage in handling the board take the following precautions Touch the antistatic package to a metal part of your computer chassis before removing the board from the package Remove the board from the package and inspect the board for loose components or any other sign of damage N...

Страница 17: ... used with the National Instruments data acquisition boards for the Macintosh NuBus NB Series IBM PS 2 Micro Channel MC Series and PC XT AT and compatible computers Figure 2 1 shows the BNC 2080 board Figure 2 1 BNC 2080 Analog Breakout Board The BNC 2080 board has BNC connectors for all analog signals a few digital signals and two user defined connectors With open component positions in the input...

Страница 18: ...208X Series User Manual 2 2 National Instruments Corporation Figure 2 2 illustrates the parts locator diagram for the BNC 2080 board Figure 2 2 BNC 2080 Board Parts Locator Diagram Art not available in PDF version of this document ...

Страница 19: ... C Warning If the data acquisition board does not use pins 33 34 or pins 49 50 for power connections set switch S5 to position B Failure to set switch S5 to position B under these conditions could result in damage to your external power supply the BNC 2080 the expansion board connected to the BNC 2080 and or your computer National Instruments is not liable for damages resulting from such connectio...

Страница 20: ... mode BNC Connector 3 2 1 Channel 9 Center Case COMMON DIFF SE 5 V 5 V AIGND AIGND R21 R15 R20 R4 R11 R3 C2 C D A B E F G S2 AIGND AISENSE 1 2 3 NRSE RSE Jumpers Installed Here at Factory W1 Figure 2 3 Onboard Equivalent Circuit for DIFF Mode The components are numbered differently for each channel Table 2 2 lists the components in each channel and their correspondence to the circuit shown in Figu...

Страница 21: ...ed jumpers are inserted in the E and F positions of the input network as in Figure 2 3 These jumpers can be easily removed to build analog input signal conditioning circuits Several applications showing the use of these open component positions are discussed in the section titled Application Notes later in this chapter Shield Ground Jumper W2 is used to connect digital ground DGND to a grounded me...

Страница 22: ...ng board If you want access to all MIO 16 signals via screw terminals you must use the SC 2070 or SC 2072 board For more information on the SC 205X Series boards the SC 206X Series boards or the SC 207X Series boards refer to either your National Instruments catalog the SC 205X Series User Manual the SC 206X Series User Manual or the SC 207X Series User Manual Specifications This section lists the...

Страница 23: ... limited to 750 mA Physical Board dimensions including standoffs 7 9 by 4 9 by 1 725 in I O connectors Two 50 pin male ribbon cable connectors BNC connectors 24 Operating Environment Temperature 0 to 70 C Relative humidity 5 to 90 noncondensing Storage Environment Temperature 55 to 125 C Relative humidity 5 to 90 noncondensing Board to Board Cabling The BNC 2080 board directly connects to any of t...

Страница 24: ...l SSR Figure 2 6 Connection between an MIO 16 Board the BNC 2080 Board and the SC 2070 72 Board or the MIO 16 and the BNC 2080 and SC 206X Series Boards via the SC 2050 Board Warning Do not connect the BNC 2080 board to any board other than a National Instruments MIO 16 data acquisition board the SC 2070 72 board or the SC 2050 cable adapter board The BNC 2080 board is not compatible with any othe...

Страница 25: ...board To desolder on the BNC 2080 vacuum type tools work best Use care when desoldering to avoid damaging component pads Only rosin core electronic grade solder should be used Acid core solder damages the printed circuit board and components Channel Configurations MIO 16 Analog Input This section discusses the input configuration of the MIO 16 board and the corresponding configurations of the BNC ...

Страница 26: ... S9 must all be in either the DIFF position or in the SE position The single ended mode is configured by flipping the switches next to each pair of BNC connectors to SE This must be done to all eight switches in order to have 16 single ended channels In the single ended mode all 16 BNC connectors are in use In the single ended mode all 16 BNC cases are tied to the COMMON signal The COMMON signal c...

Страница 27: ...Board National Instruments Corporation 2 11 BNC 208X Series User Manual Figure 2 9 BNC 2080 Switch Configurations for an MIO 16 Configured in DIFF Mode Factory Default Setting Art not available in PDF version of document ...

Страница 28: ...les of floating signal sources are outputs for thermocouples transformers battery powered devices optical isolators and isolation amplifiers The ground reference of a floating source must be tied to the ground of the data acquisition board to establish a local or onboard reference for the signal Differential Inputs To provide a return path for the instrumentation amplifier bias currents floating s...

Страница 29: ...onfigured to supply a ground reference Therefore the MIO 16 should be configured for RSE mode In this configuration the negative input of the MIO 16 instrumentation amplifier is tied to the analog ground Therefore the BNC 2080 board should be used in its factory configuration In the factory configuration jumpers are in the two series positions E and F see Table 2 2 In this configuration all of the...

Страница 30: ...nputs When measuring ground referenced signals the external signal supplies its own reference ground point and the MIO 16 should not supply one Therefore the MIO 16 board should be configured for the NRSE mode In this configuration all of the signal grounds should be tied to AISENSE which connects to the negative input of the instrumentation amplifier on the MIO 16 board The inputs of the BNC 2080...

Страница 31: ...F is available the resistance is by substitution into Formula 2 1 39 789 Ω or about 39 8 kΩ This resistance must be divided by two to get the resistor value on each input of a differential channel Therefore in this example each input has a 19 89 kΩ resistor or the closest standard value in its series positions E and F The closest standard 5 tolerance resistors are 20 kΩ The closest standard 0 5 re...

Страница 32: ...lding Highpass Filters Simple R C highpass filters are easily installed in the BNC 2080 board on any differential input channel The filters are useful for accurate high frequency measurement and low frequency noise rejection By substituting resistance and capacitance values into the following formula hereafter referred to as Formula 2 2 you can calculate a simple one pole R C filter to have a 3 dB...

Страница 33: ...pacitances For example two 0 001 µF capacitors in series have a net capacitance of 0 0005 µF The two capacitors should be the same value or the CMRR is degraded If capacitors of 0 001 µF are available the resistance is by substitution into Formula 2 2 6 366 Ω or about 6 4 kΩ Therefore in this example the input channel has a 6 37 kΩ resistor or the closest standard value in its capacitor position G...

Страница 34: ... in BNC Connector R4 R11 R15 R21 R3 R20 C2 6 34 kΩ Resistor Channel 9 in Case Channel 1 in Center F G E To Input Multiplexer Input Schematic for ACH1 BNC Connector 0 001 µF Capacitor C2 6 34 kΩ Resistor R3 0 001 µF Capacitor R20 0 001 µF Capacitor A B C D E F G Figure 2 15 Highpass Filter on Differential Channel 1 ...

Страница 35: ...ata acquisition board Input voltages greater than 42 V can result in damage to the BNC 2080 board any and all boards connected to it and the host computer Overvoltage can also cause an electric shock hazard for the operator National Instruments is not liable for damage or injury resulting from such misuse A three resistor circuit for attenuating voltages at the differential inputs of the BNC 2080 ...

Страница 36: ... Channel 9 in Channel 1 in BNC Connector R4 R11 R15 R21 C2 10 kΩ Resistor Channel 9 in Case Channel 1 in Center F G E To Input Multiplexer Input Schematic for ACH1 BNC Connector R3 10 kΩ R20 10 kΩ C2 10 kΩ Resistor R3 R20 A B C D E F G Figure 2 16 Attenuator for Use with Differential Inputs ...

Страница 37: ...old junction compensation PC LPM 16 The analog input section of an PC LPM 16 data acquisition board consists of 16 ground referenced single ended channels therefore the only valid configuration for the BNC 2080 is also RSE mode In this mode all 16 analog input BNC connectors are used Switches S1 through S4 and S6 through S9 must be in the SE position and jumper W1 should be in the AIGND COMMON pos...

Страница 38: ...ions for optional signal conditioning components One of these is designated as a resistor and the other as a capacitor The equivalent circuit for DAC0 OUT is shown in Figure 2 19 DAC1 OUT circuitry is identical to that of DAC0 OUT When the board is shipped 0 Ω jumpers are inserted into the R9 position These can be easily removed to build passive analog output signal conditioning circuits such as v...

Страница 39: ... addition there is a connector to provide access to all digital I O ports This connector is in the standard pinout for connection to one of National Instruments DIO 24 boards The BNC 2081 board is used with the National Instruments Lab data acquisition boards for the Macintosh Lab NB and Lab LC IBM PC XT AT and compatible computers Lab PC and Lab PC Figure 3 1 shows the BNC 2081 board Figure 3 1 B...

Страница 40: ...r signal conditioning components All signal conditioning components are designated as resistors but capacitors can be inserted for the construction of R C filters The board is shipped with wire jumpers in one position for each input The equivalent circuit of one input is shown in Figure 3 3 For specific applications illustrating signal conditioning with single ended inputs refer to Application Not...

Страница 41: ...r on MIO 16 Input Schematic for ACH1 BNC Connector J4 Case 5 V AIGND R4 R5 R6 R14 A B C D Jumper Installed Here at Factory Figure 3 3 Onboard Equivalent Circuit The components are numbered differently for each channel Table 3 1 is a listing of the components in each channel and their correspondence to the circuit shown in Figure 3 3 ...

Страница 42: ...k The jumper can be easily removed to build analog input signal conditioning circuits A few specific applications showing the use of these open component positions are discussed in Application Notes later in this chapter Shield Ground Jumper W1 is used to connect digital ground DGND to a grounded metal case This option is useful only if the BNC 2081 board is on metal standoffs and mounted in a gro...

Страница 43: ... you want optical isolation of or relay control by the digital I O lines you must use a National Instruments SC 2053 cable adapter board and the appropriate SC 206X Series digital signal conditioning board For more information on these products refer to either your National Instruments catalog the SC 205X Series User Manual the SC 206X Series User Manual or the SC 207X Series User Manual Specifica...

Страница 44: ...n male ribbon cable connectors BNC connectors 15 Operating Environment Temperature 0 to 70 C Relative humidity 5 to 90 noncondensing Storage Environment Temperature 55 to 125 C Relative humidity 5 to 90 noncondensing Board to Board Cabling The BNC 2081 board directly connects to any of the data acquisition boards listed in Table 3 2 Table 3 2 Data Acquisition Boards Used with the BNC 2081 Board La...

Страница 45: ...e SC 2053 Board Warning Do not connect the BNC 2081 board to any board other than a National Instruments Lab data acquisition board the SC 2053 cable adapter board or the SC 2071 board The BNC 2081 board is not compatible with any other data acquisition boards or cable adapter boards Attempts to use the BNC 2081 board with products for which it was not intended can result in damage to the BNC 2081...

Страница 46: ...on 20 to 30 W when soldering to the board To desolder on the BNC 2081 vacuum type tools work best Use care when desoldering to avoid damaging component pads Only rosin core electronic grade solder should be used Acid core solder damages the printed circuit board and components Connecting Nonreferenced or Floating Signal Sources A floating signal source is a signal source that is not connected in a...

Страница 47: ... board The inputs of the BNC 2081 board can be left in the factory original condition that is with a jumper in the series position C see Table 3 1 and Figure 3 3 Signal conditioning circuitry such as the filters and attenuators as described in the sections titled Building Lowpass Filters Building Highpass Filters and Building Attenuators Voltage Dividers later in this chapter can be used Building ...

Страница 48: ...rmine the resistance required is preferable because more standard resistor values are available If a capacitance of 1 µF is available then the resistance is by substitution into Formula 3 1 39 789 Ω or about 39 80 kΩ Therefore in this example the input has a 39 80 kΩ resistor or the closest standard value in its series position C The closest standard 5 tolerance resistor is 39 kΩ For a lowpass fil...

Страница 49: ...inputs you can add a highpass filter with a cutoff frequency of 20 kHz The 20 Hz noise then attenuates by 60 dB Notice that your 20 kHz signal also attenuates but by only 3 dB Do not neglect any potential attenuation of signals of interest if you add a low order filter You must also choose the filter component values The resistance or the capacitance can be selected arbitrarily one value determine...

Страница 50: ...log inputs of the BNC 2081 board Attenuators can be used to reduce a signal that is outside the normal input range of the data acquisition board 10 V maximum Warning The BNC 2081 board is not designed for any input voltages greater than 42 V even if a user installed voltage divider reduces the voltage to within the input range of the data acquisition board Input voltages greater than 42 V can resu...

Страница 51: ...the Lab board VLab is as follows VLab VSC G where VSC is the voltage applied to the BNC connectors of the BNC 2081 board The accuracy of this gain equation depends on the tolerances of the resistors used The input impedence of the channel with the voltage attenuator is RC RD This should be kept sufficiently high to avoid any loading effect on the voltage you are measuring AIGND Case Channel 1 Cent...

Страница 52: ...two open component positions for optional signal conditioning components One of these is designated as a resistor and the other as a capacitor The equivalent circuit for DAC0 OUT is shown in Figure 3 12 Circuitry for DAC1 OUT is the same When the board is shipped 0 Ω jumpers are inserted into the R17 an R18 positions These can be easily removed to build passive analog output signal conditioning ci...

Страница 53: ...er Manual BNC Connector DAC0 OUT AOGND R9 C5 Jumpers Installed Here at Factory DAC0 OUT Figure 3 13 Analog Output Schematic for DACs DAC0 OUT Shown Additional Signal Connection Information For more information about signal connection refer to Chapter 2 of your Lab board user manual ...

Страница 54: ...ne what signal conditioning is desired for the analog inputs and install the necessary components into the open component positions If no signal conditioning is needed on an input then the factory installed jumpers on the BNC 2080 or jumper on the BNC 2081 must be in place 2 Check that jumpers W1 and W2 on the BNC 2080 and jumper W1 on the BNC 2081 are set correctly for the current application 3 M...

Страница 55: ...ting from these connections Installing the SC 205X Series Cable Adapter Boards Consult the SC 205X Series User Manual for instructions on the installation of your SC 205X Series board if any of these boards are being used Installing the SC 207X General Purpose Termination Breadboards Consult the SC 207X Series User Manual for instructions on the installation of your SC 207X Series board if any of ...

Страница 56: ...nting Position Right Hand Mounting Position Figure 4 1 Mounting Locations for the BNC 208X Series Board and SC 207X Series Board SC 205X Series Board or SC 206X Series Board BNC 208X Series Board Left Hand Mounting Position Right Hand Mounting Position Figure 4 2 Mounting Locations for the BNC 208X Series Board and SC 205X Series Board or SC 206X Series Board ...

Страница 57: ...ng your board to the rack mount as shown in Figure 4 3 Notice that jumper W2 BNC 2080 and jumper W1 BNC 2081 can connect the digital ground for both boards to the metal standoffs attached to the board Rack mounting does not automatically ground the boards to the metal chassis unless the appropriate jumper is set If two BNC 208X Series boards connected to different data acquisition boards need to b...

Страница 58: ...e data acquisition board as the BNC 208X Series board some of these boards need to be powered by an external 5 VDC supply Because the SC 206X Series boards draw much more current than the SC 207X Series or the BNC 208X Series the SC 206X Series boards should be powered from the external supply and the SC 207X Series board or the BNC 208X Series board can be run from the host computer power supply ...

Страница 59: ...es boards using an appropriate cable MIO 16 50 Conductor Cable BNC 2080 MIO 16 BNC 2080 SC 2070 SC 2072 SC 206X Series SC 2050 Digital I O OR Lab Board BNC 2081 50 Conductor Cable Lab Board BNC 2081 50 Conductor Cable 50 Conductor Cable Digital I O SC 2053 SC 2071 SC 2072 SC 206X Series SC 206X Series SC 206X Series OR Port C Port B Port A OR OR Figure 4 5 Connections between Data Acquisition Boar...

Страница 60: ...boards to the MIO 16 Signal Connections Ribbon Cable Connectors The pinout for the 50 pin ribbon cable connector on the BNC 2080 board is exactly the same as the 50 pin connector on the MIO 16 and LPM 16 data acquisition boards The pinout for the 50 pin ribbon cable connector on the BNC 2081 board is exactly the same as the 50 pin connector on the Lab data acquisition board For more information on...

Страница 61: ...gh Friday from 8 00 a m to 6 00 p m central time In other countries contact the nearest branch office You may fax questions to us at any time Corporate Headquarters 512 795 8248 Technical support fax 800 328 2203 512 794 5678 Branch Offices Phone Number Fax Number Australia 03 879 9422 03 879 9179 Austria 0662 435986 0662 437010 19 Belgium 02 757 00 20 02 757 03 11 Denmark 45 76 26 00 45 76 71 11 ...

Страница 62: ...ficiently If you are using any National Instruments hardware or software products related to this problem include the configuration forms from their user manuals Include additional pages if necessary Name Company Address Fax Phone Computer brand Model Processor Operating system Speed MHz RAM MB Display adapter Mouse yes no Other adapters installed Hard disk capacity MB Brand Instruments used Natio...

Страница 63: ...al Edition Date September 1993 Part Number 320407 01 Please comment on the completeness clarity and organization of the manual If you find errors in the manual please record the page numbers and describe the errors Thank you for your help Name Title Company Address Phone Mail to Technical Publications Fax to Technical Publications National Instruments Corporation National Instruments Corporation 6...

Страница 64: ... analog output lab board 3 14 MIO 16 2 23 schematic for DACs DAC0 OUT 2 23 3 15 attenuators building BNC 2080 2 20 BNC 2081 3 12 for use with differential inputs 2 21 B bias return resistor 2 14 BNC 2080 2 1 connected to MIO 16 1 2 parts locator diagram 2 2 BNC 2081 3 1 analog breakout board 3 1 parts locator diagram 3 2 BNC 208X board connection 4 6 connected to MIO 16 1 2 contents of kit 1 3 unp...

Страница 65: ... 6 used with SC 2080 2 7 desoldering BNC 2080 2 9 BNC 2081 3 8 DGND vii DIFF vii DIFF mode 2 11 channel component positions 2 5 onboard equivalent circuit 2 4 differential inputs 2 13 2 15 differential mode switch configurations 2 10 digital and timing signals BNC 2080 2 6 BNC 2081 3 5 DIO connector 3 5 double height mounting 4 5 E external power connection 4 5 F field connections BNC 2080 2 6 BNC...

Страница 66: ...2 23 ground referenced signal sources BNC 2080 2 15 BNC 2081 3 8 H hardware installation 4 1 highpass filters BNC 2080 on differential channel 1 2 19 BNC 2081 on channel 1 3 12 building BNC 2080 2 17 BNC 2081 3 11 normalized frequency response BNC 2080 2 18 BNC 2081 3 11 I I O connectors 2 7 installation 4 1 L lowpass filters building BNC 2080 2 15 BNC 2081 3 9 normalized frequency response 2 16 3...

Страница 67: ...ht 4 5 locations 4 3 N NRSE vii mode 2 12 O onboard equivalent circuit BNC 2081 3 3 for DIFF mode 2 4 operating environment BNC 2080 2 7 BNC 2081 3 6 optional equipment 1 3 P PC LPM 16 2 1 2 22 switch configurations 2 22 physical specifications BNC 2080 2 7 power and fuse LED BNC 2080 2 6 BNC 2081 3 5 power connections 2 3 power consumption 2 7 BNC 2081 3 5 power requirements 2 7 BNC 2081 3 5 ...

Страница 68: ... mode switch configurations 2 22 shield ground BNC 2080 2 5 BNC 2081 3 4 signal conditioning accessories 1 4 signal conditioning capability BNC 2080 2 6 BNC 2081 3 5 signal connections BNC 2081 4 7 signal sources floating BNC 2080 2 13 BNC 2081 3 8 ground referenced BNC 2080 3 8 nonreferenced BNC 2080 2 13 BNC 2081 3 8 single ended inputs 2 14 2 15 mode switch configurations 2 10 soldering BNC 208...

Страница 69: ...RSE and NRSE modes 2 12 differential mode 2 10 for SE mode LPM 16 2 22 single ended mode 2 10 switch S5 2 3 settings 2 3 settings for data acquisition boards 2 3 T timing and digital signals 3 5 U unpacking BNC 208X 1 5 V VDC vii voltage dividers See attenuators W W1 ground reference jumper 2 10 W1 jumper settings 3 4 W2 jumper settings 2 5 ...

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