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Содержание USB-1808X

Страница 1: ...USB 1808X Eight Channel Simultaneous Sampling Multifunction Device User s Guide May 2019 Rev 4 Measurement Computing Corporation...

Страница 2: ...in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporatio...

Страница 3: ...ts 8 USB connector 8 Screw terminals 8 LEDs 10 Analog input 10 Channel Gain queue 10 Analog output 11 Digital I O 11 Digital input scanning 11 Pull up down configuration 11 Counter input 12 Totalize c...

Страница 4: ...al input output 21 Counter 22 Quadrature inputs 22 Timer 23 External clock input output 23 External trigger 24 Pattern trigger 24 Memory 24 Power 24 USB 25 Environmental 25 Mechanical 25 Screw termina...

Страница 5: ...ed for the names of objects on a screen such as buttons text boxes and checkboxes Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase Where to find mor...

Страница 6: ...o high speed general purpose counters Two quadrature encoder inputs Two timer outputs One external digital trigger for data acquisition and one external digital trigger for data generation Two externa...

Страница 7: ...he computer Connect the other end of the USB cable to the USB connector on the device No external power is required When connected for the first time a Found New Hardware dialog opens when the operati...

Страница 8: ...s CH0H to CH7H Refer to Figure 2 and Figure 3 on page 9 for DIFF and SE pinouts Two analog outputs AOUT0 and AOUT1 Four digital I O lines DIO0 to DIO3 Two general purpose counter inputs CTR0 and CTR1...

Страница 9: ...USB 1808X User s Guide Functional Details 9 Figure 2 DIFF mode pinout Figure 3 SE mode pinout...

Страница 10: ...They can be initiated by a digital trigger Digital triggering on page 15 or a pattern trigger Pattern triggering on page 15 Refer to Synchronous I O mixing analog digital and counter scanning on page...

Страница 11: ...ic showing switch detection by digital channel DIO0 If you set the switch to the 5 V input DIO0 reads TRUE 1 When set to GND DIO0 reads FALSE 0 Digital input scanning Digital input operations can be p...

Страница 12: ...four screws For more information about digital signal connections For general information about digital signal connections and digital I O techniques refer to the Guide to DAQ Signal Connections avai...

Страница 13: ...rflow occurs or if Range limit is set the MAXLIMIT or MINLIMIT value is reached Counting resumes if direction is reversed or the counter is reloaded Period measurement mode Use period mode to measure...

Страница 14: ...the minimum count specified by the MINLIMIT value is reached Counting resumes if direction is reversed or the counter is cleared Quadrature encoder options that are specific to the Z signal ENCxZ are...

Страница 15: ...is available at OCLKO Digital triggering The ITRIG for triggering input operations and OTRIG for triggering output operations terminals are external digital trigger inputs The trigger mode is softwar...

Страница 16: ...Figure 10 Trigger mask with some bits excluded Ground The analog ground AGND terminals provide a common ground for all analog channels The digital ground GND terminals provide a common ground for the...

Страница 17: ...USB 1808X User s Guide Functional Details 17 Mechanical drawings Figure 11 USB 1808X circuit board top and enclosure dimensions...

Страница 18: ...nce 1 G power on 1000 power off Input bias current 50 pA Input bandwidth All input ranges small signal 3 dB 2 0 MHz Input capacitance 50 pf Common mode voltage range 10 V range 10 1 V 5 V range 10 1 V...

Страница 19: ...n Specification 10 V Signal to noise ratio SNR 94 dB Signal to noise and distortion ratio SINAD 94 dB Total harmonic distortion THD 108 dB Spurious free dynamic range SFDR 112 dB Effective number of b...

Страница 20: ...ource OTRIG see External trigger on page 24 Digital pattern detection see Pattern trigger on page 24 Scan clock source Internal output scan clock or external output scan clock OCLKI pin Output update...

Страница 21: ...8 000 port reads writes or single bit reads writes per second typ system dependent Digital I O transfer rate synchronous 0 023 Hz to 200 kHz input 500 kHz output based on the internal clock speed of 1...

Страница 22: ...voltage 1 5 V max 0 5 V min Schmitt trigger hysteresis 0 4 V min 1 2 V max Input frequency 50 MHz max Schmitt trigger hysteresis 0 76 V typ 0 4 V min 1 2 V max Input high voltage threshold 1 74 V typ...

Страница 23: ...I O specifications Parameter Specification Terminal names ICLKI ICLKO OCLKI OCLKO Terminal types xCLKI Input active on rising edge xCLKO Output power on default is 0 V active on rising edge Terminal d...

Страница 24: ...al pattern Trigger stability Digital port must be stable for 50 ns to be recognized as a pattern Trigger bit width Up to 4 adjustable through bitmask Trigger latency Up to 1 scan period Memory Table 1...

Страница 25: ...tal Table 20 Environmental specifications Parameter Specification Operating temperature range 0 C to 55 C max Storage temperature range 40 C to 85 C max Humidity 0 to 90 non condensing max Mechanical...

Страница 26: ...hannel 4 HI 12 AGND Analog ground 40 AGND Analog ground 13 VO 5V power output 41 AOUT0 AO channel 0 14 AGND Analog ground 42 AOUT1 AO channel 1 15 GND Digital Ground 43 AGND Analog ground 16 TMR0 Time...

Страница 27: ...AGND Analog ground 40 AGND Analog ground 13 VO 5V power output 41 AOUT0 AO channel 0 14 AGND Analog ground 42 AOUT1 AO channel 1 15 GND Digital Ground 43 AGND Analog ground 16 TMR0 Timer 0 output 44 G...

Страница 28: ...ble European Directives Electromagnetic Compatibility EMC Directive 2014 30 EU Low Voltage Directive 2014 35 EU RoHS Directive 2011 65 EU Conformity is assessed in accordance to the following standard...

Страница 29: ...ion NI Hungary Kft 10 Commerce Way H 4031 Debrecen H tar t 1 A Hungary Norton Massachusetts 02766 Phone 36 52 515400 508 946 5100 Fax 36 52 515414 Fax 508 946 9500 http hungary ni com debrecen E mail...

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