National Instruments NI 5911 Скачать руководство пользователя страница 38 | Manualshive

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National Instruments NI 5911 Скачать руководство пользователя страница 38

Glossary

©

National Instruments Corporation

G-5

NI 5911 User Manual

interrupt level

the relative priority at which a device can interrupt

ISA

industry standard architecture

K

k

kilo—the standard metric prefix for 1,000, or 10

3

, used with units of

measure such as volts, hertz, and meters

kS

1,000 samples

L

LabVIEW

laboratory virtual instrument engineering workbench—a graphical
programming ADE developed by National Instruments

LSB

least significant bit

M

m

meters

MB

megabytes of memory

memory buffer

see

MS

million samples

MSB

most significant bit

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Содержание NI 5911

Страница 1: ...Computer Based Instruments NI 5911 User Manual High Speed Digitizer with FLEX ADC NI 5911 User Manual June 2001 Edition Part Number 322150D 01...

Страница 2: ...26 00 Finland 09 725 725 11 France 01 48 14 24 24 Germany 089 741 31 30 Greece 30 1 42 96 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7...

Страница 3: ...service failures caused by owner s failure to follow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent...

Страница 4: ...ents could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission This equipment has been tested and found to comply with the limits for a Cla...

Страница 5: ...ought for OEMs if also available from an original manufacturer that also markets in the EU or where compliance is not required as for electrically benign apparatus or cables To obtain the DoC for this...

Страница 6: ...take to avoid injury data loss or a system crash bold Bold text denotes items that you must select or click on in the software such as menu items and dialog box options Bold text also denotes paramet...

Страница 7: ...nding Considerations 2 2 Input Ranges 2 3 Input Impedance 2 3 Input Bias 2 4 Input Protection 2 4 AC Coupling 2 4 Oscilloscope and Flexible Resolution Modes 2 4 Oscilloscope Mode 2 5 Sampling Methods...

Страница 8: ...ser Manual viii ni com RTSI Bus and Clock PFI 2 11 PFI Lines 2 11 PFI Lines as Inputs 2 12 PFI Lines as Outputs 2 12 Synchronization 2 12 Appendix A Specifications Appendix B Technical Support Resourc...

Страница 9: ...ith Your NI Digitizer For multiple board considerations see the Operating Environment section in Appendix A Specifications of this manual Connecting Signals Figure 1 1 shows the front panel for the NI...

Страница 10: ...5911 NI 5911 User Manual 1 2 ni com Figure 1 1 NI 5911 Connectors Figure 1 2 9 Pin Mini Circular DIN Connector 1 5 Volts Fused 2 GND 3 Reserved 4 Reserved 5 Reserved 6 PFI 2 7 Reserved 8 Reserved 9 Re...

Страница 11: ...OPE Software User Manual Other resources include the NI SCOPE Instrument Driver Quick Reference Guide It contains abbreviated information on the most commonly used functions and LabVIEW VIs For more d...

Страница 12: ...put Amplifier PGIA The analog input of the NI 5911 is equipped with a differential programmable gain input amplifier The PGIA accurately interfaces to and scales the signal presented to the analog to...

Страница 13: ...ive signal has been optimized for speed and linearity You should always apply signals to the positive input and ground to the negative input Reversing the inputs will result in higher distortion and l...

Страница 14: ...range setting and acquire an AC coupled or 0 V signal Input Impedance The input impedance of the NI 5911 PGIA is 1 M between the positive and negative input 2 depending on input capacitance The outpu...

Страница 15: ...path to minimize input currents to a nonharmful level The protection voltage Vtr is input range dependent as shown in Table 2 1 AC Coupling When you need to measure a small AC signal on top of a larg...

Страница 16: ...ope mode all signals up to 100 MHz are passed to the ADC You need to ensure that your signal is band limited to prevent aliasing Aliasing and other sampling terms are described more thoroughly in your...

Страница 17: ...hen either select a higher input range or attenuate the signal How Flexible Resolution Works The ADC can be sourced through a noise shaping circuit that moves quantization noise on the output of the A...

Страница 18: ...911 with a software function or a LabVIEW VI See Chapter 3 Common Functions and Examples of your NI SCOPE Software User Manual for step by step instructions for calibrating your digitizer When Interna...

Страница 19: ...t this condition has occurred may not be obvious from inspecting the data due to the digital filtering that takes place on the acquired data Therefore an error occurs to let you know that the data inc...

Страница 20: ...ncrements of 20 V 170 118 mV There may also be a hysteresis value associated with the trigger that can be set in the same size increments The hysteresis value creates a trigger window the signal must...

Страница 21: ...hapter 3 Common Functions and Examples of your NI SCOPE Software User Manual Memory The NI 5911 allocates at least 4 kB of onboard memory for every acquisition Samples are stored in this buffer before...

Страница 22: ...the data is fetched Therefore the dead time or the time when the digitizer is not ready for a trigger is extremely small For more information on multiple record acquisitions and dead time see the Mak...

Страница 23: ...r through an external frequency input through the RTSI bus clock line or a PFI input The NI 5911 may also output its 10 MHz reference on the RTSI bus clock line or a PFI line so that other NI 5911s or...

Страница 24: ...ible Resolution Mode Number of channels 1 Number of flexible resolution ADC 1 Max sample rate 1 GS s repetitive 100 MS s single shot Resolution Sample Rate Mode Effective Resolution 100 n MS s Oscillo...

Страница 25: ...5 MS s Flexible Resolution 1 MS 4 MS 5 MS s Flexible Resolution 1 MS 4 MS 2 5 MS s Flexible Resolution 1 MS 4 MS 1 MS s Flexible Resolution 1 MS 4 MS 500 kS s Flexible Resolution 1 MS 4 MS 200 kS s Fl...

Страница 26: ...s at 1 MS s in flexible resolution mode Input coupling DC and AC software selectable AC coupling cut off frequency 3 dB 2 3 Hz 13 Input impedance 1 M 2 Max measurable input voltage 10 V DC peak AC Inp...

Страница 27: ...s Flexible Resolution 400 kHz 0 005 dB 80 dB 500 kS s Flexible Resolution 200 kHz 0 005 dB 80 dB 200 kS s Flexible Resolution 80 kHz 0 005 dB 80 dB 100 kS s Flexible Resolution 40 kHz 0 005 dB 80 dB 5...

Страница 28: ...dBfs 121 dBfs 10 kS s 4 kHz 160 dBfs 124 dBfs 1 n 232 in oscilloscope mode Sampling Frequency SFDR for input 0 dBfs SFDR for input 20 dBfs SFDR for input 60 dBfs typical 100 MS s 50 dB 50 dB N A 12 5...

Страница 29: ...Reference clock sources PFI lines RTSI clock or onboard Phase difference between multiple instruments 5 ns at any input frequency 100 MHz from input connector to input connector Triggering Systems Mo...

Страница 30: ...peak AC 10 kHz without external attenuation Acquisition Modes RIS 1 GS s down to 200 MS s effective sample rate repetitive signals only Data is interleaved in software RIS accuracy 0 5 ns Single shot...

Страница 31: ...ive humidity 10 to 90 noncondensing Storage Environment Ambient temperature 20 to 65 C EMC Compliance CE2001 FCC Calibration Internal Internal calibration is done upon software command The calibration...

Страница 32: ...e latest example programs system configurators tutorials technical news as well as a community of developers ready to share their own techniques Customer Education National Instruments provides a numb...

Страница 33: ...tes from the Worldwide Offices section of ni com Branch office Web sites provide up to date contact information support phone numbers e mail addresses and current events If you have searched the techn...

Страница 34: ...Glossary Prefix Meanings Value p pico 10 12 n nano 10 9 micro 10 6 m milli 10 3 k kilo 103 M mega 106 G giga 109 Symbols percent positive of or plus negative of or minus per degree plus or minus ohm...

Страница 35: ...and reduces noise amplitude flatness a measure of how close to constant the gain of a circuit remains over a range of frequencies attenuate to reduce in magnitude B b bit one binary digit either 0 or...

Страница 36: ...e default input of a control is a certain value often 0 that means use the current default setting device a plug in data acquisition board card or pad The NI 5911 is an example of a device differentia...

Страница 37: ...r samples per second I I O input output the transfer of data to from a computer system involving communications channels operator interface devices and or data acquisition and control interfaces in in...

Страница 38: ...ilo the standard metric prefix for 1 000 or 103 used with units of measure such as volts hertz and meters kS 1 000 samples L LabVIEW laboratory virtual instrument engineering workbench a graphical pro...

Страница 39: ...he original signal can be recovered without distortion O Ohm s Law R V I the relationship of voltage to current in a resistance overrange a segment of the input range of an instrument outside of the n...

Страница 40: ...vely sampling a repeated waveform resolution the smallest signal increment that can be detected by a measurement system Resolution can be expressed in bits or in digits The number of bits in a system...

Страница 41: ...coefficient the percentage that a measurement will vary according to temperature See also thermal drift thermal drift measurements that change as the temperature varies thermal EMFs thermal electromo...

Страница 42: ...used with a PC that has the functionality of a classic stand alone instrument 2 a LabVIEW software module VI which consists of a front panel user interface and a block diagram program Vrms volts root...

Страница 43: ...mode characteristics A 3 connectors BNC connector 1 1 DIN connector 1 1 location on front panel figure 1 2 SMB connector 1 1 conventions used in the manual vi customer education B 1 D dead time in mu...

Страница 44: ...2 9 trigger hold off 2 10 trigger sources figure 2 9 I impedance formula for impedance divider 2 3 input and output impedance 2 3 input bias 2 4 input impedance 2 3 input protection circuits 2 4 inpu...

Страница 45: ...ion 2 12 S sampling methods real time and RIS 2 5 sampling rate flexible resolution mode table 2 6 Scope Soft Front Panel 1 3 SMB connector 1 1 specifications acquisition characteristics accuracy A 3...

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