Measurement Computing USB-1608FS-Plus-OEM User Manual Download Page 1

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USB-1608FS-Plus-OEM

Analog and Digital I/O

Document Revision 2

December 2014
© Copyright 2014

User's Guide

Summary of Contents for USB-1608FS-Plus-OEM

Page 2: ...d 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 Corporati...

Page 3: ...ardware 8 Chapter 3 Functional Details 9 Analog input modes 9 Software paced 9 Hardware paced 9 BURSTIO 9 Board components 10 USB connector 10 LED 10 Header connectors 11 Signal connections 11 Analog...

Page 4: ...USB 1608FS Plus OEM User s Guide 4 Memory 20 Microcontroller 20 Power 21 General 21 Environmental 21 Mechanical 21 Header connector and pinout 21...

Page 5: ...used for the names of objects on a screen such as buttons text boxes and check boxes italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase Wh...

Page 6: ...Two header connectors for field wiring connections The USB 1608FS Plus OEM device is compatible with both USB 1 1 and USB 2 0 ports The speed of the device may be limited when using a USB 1 1 port du...

Page 7: ...1608FS Plus OEM User s Guide Introducing the USB 1608FS Plus OEM 7 Functional block diagram USB 1608FS Plus OEM functions are illustrated in the block diagram shown here Figure 1 Functional block diag...

Page 8: ...the computer Connect the other end of the 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...

Page 9: ...al clock source The maximum sampling rate is an aggregate rate The total sample rate using hardware paced mode is 400 kS s divided by the number of channels with a maximum rate of 100 kS s for any cha...

Page 10: ...Receives the supplied USB cable When connected to a computer or USB hub the cable provides 5 V power and communication No external power supply is required LED The LED indicates the USB communication...

Page 11: ...el 1 DIO1 CH1 IN AI channel 1 3 22 Digital ground GND AGND Analog ground 2 21 DIO channel 0 DIO0 CH0 IN AI channel 0 1 USB connector Signal connections Analog input You can connect up to eight analog...

Page 12: ...down configuration All digital I O lines are pulled up to USB 5V HI with a 47 k resistor default You can change the pull up down configuration using the internal jumper labeled DIO You must remove th...

Page 13: ...t The trigger mode is software selectable for edge or level sensitive Edge sensitive mode is selectable for rising or falling Level sensitive mode is selectable for high or low Reserved The RSVD conne...

Page 14: ...OEM are offset and gain Nonlinearity is small and is not significant as an error source with respect to offset and gain Figure 6 shows an ideal error free transfer function The typical calibrated acc...

Page 15: ...or example a USB 1608FS Plus OEM exhibits a typical calibrated gain error of 0 04 on all ranges For the 10 V range this would yield 10 V 0 0002 4 mV This means that at full scale neglecting the effect...

Page 16: ...lave configuration and acquire data from the analog inputs of all devices using one clock When the SYNC pin is configured as an output the internal A D pacer clock signal is sent to the header connect...

Page 17: ...V 5 V 2 V 1 V Sampling rate Hardware paced 0 01 S s to 100 kS s software selectable Throughput Software paced 500 S s all channels Hardware paced Note 1 400 kS s of channels max 100 kS s max for any...

Page 18: ...les are gathered at the maximum specified sampling rate of 100 kS s Digital input output Table 5 Digital I O specifications Parameter Specification Digital type 5V TTL Number of I O 8 DIO0 through DIO...

Page 19: ...ge limit 0 5 V absolute min 0 V recommended min External clock input output Table 7 External clock I O specifications Parameter Condition Specification Pin name SYNC Pin type Bidirectional Direction s...

Page 20: ...typ 1 9 V min 3 1V max Input high voltage limit 5 5 V absolute max Input low voltage threshold 1 42 V typ 1 0 V min 2 0 V max Input low voltage limit 0 5 V absolute min 0 V recommended min Input freq...

Page 21: ...the manufacturer A laptop PC that is not connected to an external power adapter is an example of a battery powered root port hub If your laptop PC is constrained to the 100 mA maximum you need to purc...

Page 22: ...0 IN 21 DIO0 2 AGND 22 GND 3 CH1 IN 23 DIO1 4 AGND 24 GND 5 CH2 IN 25 DIO2 6 AGND 26 GND 7 CH3 IN 27 DIO3 8 AGND 28 GND 9 CH4 IN 29 DIO4 10 AGND 30 GND 11 CH5 IN 31 DIO5 12 AGND 32 GND 13 CH6 IN 33 DI...

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