National Instruments NI 5911 User Manual Download

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Computer-Based
Instruments

NI 5911 User Manual

High-Speed Digitizer with FLEX ADC

NI 5911 User Manual

™

June 2001 Edition

Part Number 322150D-01

Summary of Contents for NI 5911

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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