Measurement Computing USB-1808X User Manual Download Page 7

 

Chapter 2 

Installing the USB-1808X 

Unpacking 

As with any electronic device, you should take care while handling to avoid damage from static 

electricity. Before removing the device from its packaging, ground yourself using a wrist strap or by simply 

touching the computer chassis or other grounded object to eliminate any stored static charge. 
Contact us immediately if any components are missing or damaged. 

Installing the software  

Refer to the 

MCC DAQ Quick Start

 and the USB-1808X product page on our website for information about the 

software supported by the USB-1808X. 

Install the software before you install your device 

The driver needed to run the USB-1808X is installed with the software. Therefore, you need to install the 

software package you plan to use before you install the hardware. 

Installing the hardware 

To connect the USB-1808X to your system, connect the USB cable to an available USB port on the computer or 

to an external USB hub connected to the 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 operating system detects the 

device. When the dialog closes, the installation is complete. The 

Status

 LED on the USB-1808X turns on after 

the device is successfully installed. 

If the Status LED turns off 

If communication is lost between the device and the computer, the device LED turns off. To restore 

communication, disconnect the USB cable from the computer and then reconnect it. This should restore 

communication, and the LED should turn on. 

Calibrating the hardware 

The Measurement Computing Manufacturing Test department performs the initial factory calibration. Return 

the device to Measurement Computing Corporation when calibration is required. The recommended calibration 

interval is one year. 

Updating firmware 

Your DAQ device contains firmware that can be updated in the field if required. Firmware is available for 

download at 

www.mccdaq.com/firmware.aspx

. MCC recommends that you check this page periodically to see 

if an update to your device firmware is available. 
 

Summary of Contents for USB-1808X

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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