background image

USB-3102 User's Guide 

Functional Details 

16

 

Digital I/O terminals (DIO0 to DIO7) 

You can connect up to eight digital I/O lines to the screw terminals labeled 

DIO0

 to 

DIO7

 (pins 21 through 28). 

You can configure each digital bit for either input or output. 

When you configure the digital bits for input, you can use the digital I/O terminals to detect the state of any 
TTL level input. Refer to the switch shown in Figure 8 and the schematic shown in Figure 9. When the switch is 
set to the +5 V USER input, DIO7 reads 

TRUE

 (1). If you move the switch to DGND, DIO7 reads 

FALSE 

(0). 

Pin 53
DGND

Pin 56
+5V

Pin 28
DIO7

Figure 8. DIO7 detecting the state of a switch 

+5V

DGND

DIO7

Figure 9. Schematic showing DIO7 detecting the state of 

a switch 

For more information on digital signal connections 

For more information on digital signal connections and digital I/O techniques, refer to the 

Guide to 

Signal Connections

 (available on our web site at 

www.mccdaq.com/pdfs/DAQ-Signal-Connections.pdf

).

Digital I/O control terminal (DIO CTL) for pull-up/down configuration 

All digital pins are floating by default. When inputs are floating, the state of unwired inputs are undefined (they 
may read high or low). You can configure the inputs to read a high or low value when they aren’t wired. Use the 

DIO CTL

 connection (pin 54) to configure the digital pins for pull-up (inputs read high when unwired) or pull-

down (inputs read low when unwired). 

To pull up the digital pins to +5V, wire the 

DIO CTL

 terminal pin to the 

+5V

 terminal pin (pin 56).

To pull down the digital pins to ground (0 volts), wire the 

DIO CTL

 terminal pin to a 

DGND

 terminal pin

(pin 50, 53, or 55).

Ground terminals (AGND, DGND) 

Eight analog ground (

AGND

) connections provide a common ground for all analog voltage and current output 

channels. Three digital ground (

DGND

) connections provide a common ground for the 

DIO

CTR

SYNCLD

 and 

+5V

 

connections.

Summary of Contents for USB-3100 Series

Page 1: ......

Page 2: ...USB 3102 USB based Analog Output User s Guide Document Revision 4A March 2009 Copyright 2009 Measurement Computing Corporation...

Page 3: ...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 Corporation...

Page 4: ...11 Chapter 3 Functional Details 12 External components 12 USB connector 12 Status LED 12 Power LED 12 Screw terminal banks 13 Analog voltage output terminals VOUT0 to VOUT3 14 Analog current output te...

Page 5: ...USB 3102 User s Guide 5 Environmental 24 Mechanical 24 Main connector and pin out 24 Declaration of Conformity 25...

Page 6: ...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 Where to find more in...

Page 7: ...rent channel pair simultaneously You set the voltage output range of each DAC channel independently with software for either bipolar unipolar or current The bipolar range is 10 V the unipolar range is...

Page 8: ...nnels 16 bit DIO 8 channels Analog Current Output 4 channels 16 bit 4 channel Quad 4 Full speed USB 2 0 Compliant Interface Figure 2 USB 3102 block diagram Software features For information on the fea...

Page 9: ...Start pdf This booklet supplies a brief description of the software you received with your USB 3102 and information regarding installation of that software Please read this booklet completely before...

Page 10: ...ows Update or download the update from www microsoft com downloads details aspx familyid 733dd867 56a0 4956 b7fe e85b688b7f86 displaylang en For more information refer to the Microsoft Knowledge Base...

Page 11: ...ion disconnect the USB cable from the computer and then reconnect it This should restore communication and the power LED should turn back on Calibrating the USB 3102 The USB 3102 is shipped fully cali...

Page 12: ...ower and communication to the USB 3102 The voltage supplied through the USB connector is system dependent and may be less than 5 V No external power supply is required Status LED The Status LED indica...

Page 13: ...nalog voltage output connections VOUT0 VOUT2 Two analog current output connections IOUT0 IOUT2 Four analog ground connections AGND Eight digital I O connections DIO0 to DIO7 Screw terminal pins 29 56...

Page 14: ...s associated current output is also updated Each channel pair can be updated individually or simultaneously Leave each pair of unused voltage and current outputs disconnected Analog current output ter...

Page 15: ...y IOUTn 2 IOUTn IOUTn 1 IOUTn 1 IOUTn 2 IOUTn Figure 6 Typical analog current output circuit Refer to the manufacturer s information for the device being controlled for additional details Current Test...

Page 16: ...d digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdaq com pdfs DAQ Signal Connections pdf Digital I O control terminal DIO CTL for pull up down conf...

Page 17: ...al to configure the SYNCLD mode as master or slave On power up and reset the SYNCLD pin is set to slave mode input Refer to the USB 3100 Series section in the Universal Library User s Guide for inform...

Page 18: ...channels on each device are updated simultaneously An example of a master slave configuration is shown here S Slave PMD 1608F Master device Slave device SYNCLD pin terminal pin 49 D A LOAD signal Conf...

Page 19: ...ferential non linearity Note 4 Calibrated 1 25 LSB typ 2 LSB to 1 LSB max Un calibrated 0 25 LSB typ 1 LSB max Output current VOUTx pins 3 5 mA typ Output short circuit protection VOUTx connected to A...

Page 20: ...22 0 Table 3 Absolute accuracy components specifications calibrated output Range of reading Offset mV Temp drift C Absolute accuracy at FS mV 10 V 0 0183 1 831 0 00055 3 661 0 to 10 V 0 0183 0 915 0...

Page 21: ...alog output calibration specifications Parameter Conditions Specifications Recommended warm up time 15 minutes min On board precision reference DC level 5 000 V 1 mV max Tempco 10 ppm C max Long term...

Page 22: ...00 Ohm series resistor Note 10 When SYNCLD is in input mode the analog outputs may either be updated immediately or when a positive edge is seen on the SYNCLD pin this is under software control Howeve...

Page 23: ...the USB 3102 which includes up to 10 mA for the status LED This does not include any potential loading of the digital I O bits 5V user terminal ITEST or the VOUTx IOUTx outputs Note 12 Output voltage...

Page 24: ...in connector specifications Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Pin Signal Name Pin Signal Name 1 VOUT0 29 VOUT1 2 IOUT0 30 IOUT1 3 VOUT2 31 VOUT3 4 IOUT2 32 IOUT3 5 AGND 3...

Page 25: ...the following conditions must be met The host computer peripheral equipment power sources and expansion hardware must be CE compliant Equipment must be operated in a controlled electromagnetic enviro...

Page 26: ...ion 10 Commerce Way Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdaq com www mccdaq com NI Hungary Kft H 4031 Debrecen H tar t 1 A Hungary Phone 36 52 515400 Fax 36 52 51541...

Reviews: