Measurement USB-4301 User Manual

USB-3101
USB-based Analog Output
User Guide
© Copyright 2009, Measurement Computing Corporation
HM USB-3101.doc
Your new Measurement Computing product comes with a fantastic extra
Management committed to your satisfaction!
Thank you for choosing a Measurement Computing productand congratulations! You own the finest, and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support. It’s the embodiment of our mission:
To provide PC-based data acquisition hardware and software that will save time and save money.
Simple installations minimize the time between setting up your system and actually making measurements. We offer quick and simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system.
Limited Lifetime Warranty: Most MCC products are covered by a limited lifetime warranty against defects in materials or workmanship for the life of the product, to the original purchaser, unless otherwise noted. Any products found to be defective in material or workmanship will be repaired, replaced with same or similar device, or refunded at MCC’s discretion. For specific information, please refer to the terms and conditions of sale.
Harsh Environment Program: Any Measurement Computing product that is damaged due to misuse, or any reason, may be eligible for replacement with the same or similar device for 50% of the current list price. I/O boards face some harsh environments, some harsher than the boards are designed to withstand. Contact MCC to determine your product’s eligibility for this program.
30 Day Money-Back Guarantee: Any Measurement Computing Corporation product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned. If you are not satisfied, or chose the wrong product by mistake, you do not have to keep it.
These warranties are in lieu of all other warranties, expressed or implied, including any implied warranty of merchantability or fitness for a particular application. The remedies provided herein are the buyer’s sole and exclusive remedies. Neither Measurement Computing Corporation, nor its employees shall be liable for any direct or indirect, special, incidental or consequential damage arising from the use of its products, even if Measurement Computing Corporation has been notified in advance of the possibility of such damages.
3
Trademark and Copyright Information
TracerDAQ, Universal Library, Measurement Computing Corporation, and the Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation.
Windows, Microsoft, and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation LabVIEW is a trademark of National Instruments. CompactFlash is a registered trademark of SanDisk Corporation. XBee and XBee-PRO are trademarks of MaxStream, Inc. All other trademarks are the property of their respective owners. Information furnished by Measurement Computing Corporation is believed to be accurate and reliable. However, no
responsibility is assumed by Measurement Computing Corporation neither for its use; nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corporation.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, 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 does not authorize any Measurement Computing Corporation product for use in life support systems and/or devices without prior written consent from Measurement Computing Corporation. Life support devices/systems are devices or systems which, a) are intended for surgical implantation into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result in injury. Measurement Computing Corporation products are not designed with the components required, and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people.
4
Table of Contents
Preface
About this User's Guide ....................................................................................................................... 7
What you will learn from this user's guide ......................................................................................................... 7
Conventions in this user's guide ........................................................................................................................................ 7
Where to find more information ......................................................................................................................... 7
Chapter 1
Introducing the USB-3101 .................................................................................................................... 8
Overview: USB-3101 features ........................................................................................................................... 8
USB-3101 block diagram ................................................................................................................................... 9
Software features ................................................................................................................................................ 9
Chapter 2
Installing the USB-3101 ...................................................................................................................... 10
What comes with your USB-3101 shipment? .................................................................................................. 10
Hardware .........................................................................................................................................................................10
Additional documentation ................................................................................................ ................................................10
Unpacking the USB-3101................................................................................................................................. 10
Installing the software ...................................................................................................................................... 11
Installing the hardware ..................................................................................................................................... 11
Connecting the USB-3101 to your system .......................................................................................................................11
Calibrating the USB-3101 ................................................................................................................................ 12
Chapter 3
Functional Details ............................................................................................................................... 13
External components ........................................................................................................................................ 13
USB connector .................................................................................................................................................................13
Status LED .......................................................................................................................................................................13
Power LED ......................................................................................................................................................................13
Screw terminal banks .......................................................................................................................................................14
Analog voltage output terminals (VOUT0 to VOUT3) ...................................................................................................15
Digital I/O terminals (DIO0 to DIO7) .............................................................................................................................15
Digital I/O control terminal (DIO CTL) for pull-up/down configuration ........................................................................16
Ground terminals (AGND, DGND) .................................................................................................................................16
Synchronous DAC load terminal (SYNCLD) ..................................................................................................................16
Counter terminal (CTR) ...................................................................................................................................................16
Power terminal (+5V) ......................................................................................................................................................16
Synchronizing multiple units ............................................................................................................................ 17
Chapter 4
Specifications ...................................................................................................................................... 18
Analog voltage output ...................................................................................................................................... 18
Analog output calibration ................................................................................................................................. 19
Digital input/output .......................................................................................................................................... 19
Synchronous DAC Load................................................................................................................................... 20
Counter ............................................................................................................................................................. 20
Memory ............................................................................................................................................................ 21
Microcontroller ................................................................................................................................................. 21
Power ................................................................................................................................ ................................ 21
USB specifications ........................................................................................................................................... 21
Environmental .................................................................................................................................................. 21
5
USB-3101 User's Guide
Mechanical ....................................................................................................................................................... 22
Main connector and pin out .............................................................................................................................. 22
Declaration of Conformity .................................................................................................................. 23
6
About this User's Guide
What you will learn from this user's guide
This user's guide explains how to install, configure, and use the USB-3101 so that you get the most out of its analog output features.
This user's guide also refers you to related documents available on our web site, and to technical support resources.
Conventions in this user's guide
For more information on …
Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
Preface
< : > Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned
to registers, bit settings, etc.
bold text Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For
example:
1. Insert the disk or CD and click the OK button.
italic text Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For
example: The InstaCal® installation procedure is explained in the Quick Start Guide. Never touch the exposed pins or circuit connections on the board
Where to find more information
The following electronic documents provide helpful information relevant to the operation of the USB-3101. MCC's Specifications: USB-3101 (the PDF version of the Specifications chapter in this guide) is available
on our web site at www.mccdaq.com/pdfs/Specs/USB-3101-spec.pdf.
MCC's Quick Start Guide is available on our web site at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
MCC's Guide to Signal Connections is available on our web site at
www.mccdaq.com/signals/signals.pdf.
MCC's Universal Library User's Guide is available on our web site at
www.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf.
MCC's Universal Library Function Reference is available on our web site at
www.mccdaq.com/PDFmanuals/sm-ul-functions.pdf.
MCC's Universal Library for LabVIEWUser’s Guide is available on our web site at
www.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf.
USB-3101 User's Guide (this document) is also available on our web site at
www.mccdaq.com/PDFmanuals/USB-3101.pdf.
7
Chapter 1
Introducing the USB-3101
Overview: USB-3101 features
This user's guide contains all of the information you need to connect the USB-3101 to your computer and to the signals you want to control. The USB-3101 is part of the Measurement Computing brand of USB-based data acquisition products.
The USB-3101 is a USB 2.0 full-speed device that is supported under popular Microsoft® Windows® operating systems. The USB-3101 is fully compatible with both USB 1.1 and USB 2.0 ports.
The USB-3101 provides four channels of analog voltage output, eight digital I/O connections, and one 32-bit event counter.
The USB-3101 has a quad (4-channel) 16-bit digital-to-analog converter (DAC). You set the voltage output range of each DAC channel independently with software for either bipolar or unipolar. The bipolar range is ±10 V, and the unipolar range is 0 to 10 V. The analog outputs may be updated individually or simultaneously. A bidirectional synchronization connection allows you to simultaneously update the DAC outputs on multiple devices.
The USB-3101 features eight bidirectional digital I/O connections. You can configure the DIO lines as input or output in one 8-bit port. All digital pins are floating by default. A screw terminal connection is provided for pull-up (+5 V) or pull-down (0 volts) configuration.
The 32-bit counter can count TTL pulses.
The USB-3101 is powered by the +5 volt USB supply from your computer. No external power is required. All I/O connections are made to the screw terminals located along each side of the USB-3101.
Figure 1. USB-3101
8
USB-3101 User's Guide Introducing the USB-3101
Screw terminal I/O connector
USB
Microcontroller
Screw terminal I/O connector
8
Event Counter
1 channel
(32-bit)
DIO
8 channels
SPI
4
USB
Full-speed
USB 2.0
Compliant
Interface
Screw terminal I/O connector
SYNCLD
1
D/A
4
Analog Voltage
Output
4 channels (16-bit)
4
4-channel
Quad
1
USB-3101 block diagram
USB-3101 functions are illustrated in the block diagram shown here.
Software features
For information on the features of InstaCal and the other software included with your USB-3101, refer to the Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
Check www.mccdaq.com/download.htm for the latest software version.
Figure 2. USB-3101 block diagram
9
Installing the USB-3101
What comes with your USB-3101 shipment?
The following items are shipped with the USB-3101.
Hardware
USB-3101 device
Chapter 2
USB cable (2 meter length)
Additional documentation
In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). This booklet supplies a brief description of
the software you received with your USB-3101 and information regarding installation of that software. Please read this booklet completely before installing any software or hardware.
Unpacking the USB-3101
As with any electronic device, you should take care while handling to avoid damage from static electricity. Before removing the USB-3101 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.
10
USB-3101 User's Guide Installing the USB-3101
If any components are missing or damaged, notify Measurement Computing Corporation immediately by phone, fax, or e-mail:
Phone: 508-946-5100 and follow the instructions for reaching Tech Support. Fax: 508-946-9500 to the attention of Tech Support Email: techsupport@mccdaq.com
Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data Acquisition Software CD. This booklet is available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-
Quick-Start.pdf.
Installing the hardware
Be sure you are using the latest system software
Before you connect the USB-3101, make sure that you are using the latest versions of the USB drivers. Before installing the USB-3101, download and install the latest Microsoft Windows updates. In particular,
when using Windows XP, make sure you have XP Hotfix KB822603 installed. This update is intended to address a serious error in Usbport.sys when you operate a USB device. You can run Windows 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 article
"Availability of the Windows XP SP1 USB 1.1 and 2.0 update." This article is available at
support.microsoft.com/?kbid=822603.
Connecting the USB-3101 to your system
To connect the USB-3101 to your system, turn your computer on, and connect the USB cable to a USB port on your computer or to an external USB hub that is connected to your computer. The USB cable provides power and communication to the USB-3101.
When you connect the USB-3101 for the first time, a Found New Hardware popup balloon (Windows XP) or dialog (other Windows versions) appears as the USB-3101 is detected by your computer.
After the USB-3101 is installed, the popup balloon or dialog states "Your new hardware is installed and ready to use," and the power LED should flash and then remain lit. This indicates that communication is established between the USB-3101 and your computer.
Caution! Do not disconnect any device from the USB bus while the computer is communicating with the
USB-3101, or you may lose data and/or your ability to communicate with the USB-3101.
11
USB-3101 User's Guide Installing the USB-3101
If the power LED turns off
If the power LED is illuminated but then turns off, the computer has lost communication with the USB-3101. To restore communication, 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-3101
The USB-3101 is shipped fully calibrated. Calibration coefficients are stored in the device FLASH memory. Return the device to Measurement Computing Corporation when calibration is required. The normal calibration interval is once per year.
12
USB connector
Power LED
Status LED
Screw terminal
pins 1 to 28
Screw terminal
pins 29 to 56
Functional Details
External components
The USB-3101 has the following external components, as shown in Figure 3.
USB connector Status LED Power LED Screw terminal banks (2)
Chapter 3
Figure 3. USB-3101 external components
USB connector
The USB connector provides power and communication to the USB-3101. 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 indicates the communication status of the USB-3101. It flashes when data is being transferred, and is off when the USB-3101 is not communicating. This LED uses up to 10 mA of current and cannot be disabled.
Power LED
The power LED lights up when the USB-3101 is connected to a USB port on your computer or to an external USB hub that is connected to your computer.
13
USB-3101 User's Guide Functional Details
Pin 56Pin 29
Pin 28Pin 1
Screw terminal banks
The USB-3101 has two rows of screw terminalsone row on the top edge of the housing, and one row on the bottom edge. Each row has 28 connections. Use 16 AWG to 30 AWG wire gauge when making screw terminal connections. Pin numbers are identified in Figure 4.
Figure 4. USB-3101 screw terminal pin numbering
Screw terminal – pins 1-28
The screw terminals on the bottom edge of the USB-3101 (pins 1 to 28) provide the following connections:
Two analog voltage output connections (VOUT0, VOUT2) Four analog ground connections (AGND) Eight digital I/O connections (DIO0 to DIO7)
Screw terminal – pins 29-56
The screw terminals on the top edge of the USB-3101 (pins 29 to 56) provide the following connections:
Two analog voltage output connections (VOUT1, VOUT3) Four analog ground connections (AGND) One SYNC terminal for external clocking and multi-unit synchronization (SYNCLD) Three digital ground connections (DGND) One external event counter connection (CTR) One digital I/O pull-down resistor connection (DIO CTL) One voltage output power connection (+5 V)
14
USB-3101 User's Guide Functional Details
29 VOUT1
30 NC
31 VOUT3
32 NC
33 AGND
34 NC
35 NC
36 NC
37 NC
38 AGND
39 NC
40 NC
41 NC
42 NC
43 AGND
44 NC
45 NC
46 NC
47 NC
50 DGND
51 NC
52 CTR
53 DGND
54 DIO CTL
55 DGND
56 +5V
48 AGND
49 SYNCLD
VOUT0 1
NC 2
VOUT2 3
NC 4
AGND 5
NC 6
NC 7
NC 8
NC 9
AGND 10
NC 11
NC 12
NC 13
NC 14
AGND 15
NC 16
NC 17
NC 18
NC 19
AGND 20
DIO0 21
DIO1 22
DIO2 23
DIO3 24
DIO4 25
DIO5 26
DIO6 27
DIO7 28
Pin 53 DGND
Pin 56 +5V
Pin 28 DIO7
Figure 6. DIO7 detecting the state of a switch
+5V
DGND
DIO7
Figure 7. Schematic showing DIO7 detecting the state of
a switch
Figure 5. USB-3101 signal pin out
Analog voltage output terminals (VOUT0 to VOUT3)
The screw terminal pins labeled VOUT0 to VOUT3 are voltage output terminals (see Figure 5). The voltage output range for each channel is software-programmable for either bipolar or unipolar. The bipolar range is ±10 V, and the unipolar range is 0 to 10 V. The channel outputs may be updated individually or simultaneously.
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 6 and the schematic shown in Figure 8. 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).
15
USB-3101 User's Guide Functional Details
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/signals/signals.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 output channels. Three digital ground (DGND) connections provide a common ground for the DIO, CTR, SYNCLD and +5V connections.
Synchronous DAC load terminal (SYNCLD)
The synchronous DAC load connection (pin 49) is a bidirectional I/O signal that allows you to simultaneously update the DAC outputs on multiple devices. You can use this pin for two purposes:
Configure as an input (slave mode) to receive the D/A LOAD signal from an external source.
When the SYNCLD pin receives the trigger signal, the analog outputs are updated simultaneously.
SYNCLD pin must be logic low in slave mode for immediate update of DAC outputs
When the SYNCLD pin is in slave mode, the analog outputs can be updated immediately or when a positive edge is seen on the SYNCLD pin (this is under software control.)
The SYNCLD pin must be at a low logic level for DAC outputs to update immediately. If the external source supplying the D/A LOAD signal is pulling the SYNCLD pin high, no update will occur.
Refer to the "USB-3100 Series" section in the Universal Library User's Guide for information on how to update DAC outputs immediately.
Configure as an output (master mode) to send the internal D/A LOAD signal to the SYNCLD pin.
You can use the SYNCLD pin to synchronize with a second USB-3101 and simultaneously update the DAC outputs on each device. Refer to Synchronizing multiple units section on page 17.
Use InstaCal 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 information on how to configure the USB-3101 with the Universal Library.
Counter terminal (CTR)
The CTR connection (pin 52) is the input to the 32-bit event counter. The internal counter increments when the TTL levels transition from low to high. The counter can count frequencies of up to 1 MHz.
Power terminal (+5V)
The +5 V connection (pin 56) draws power from the USB connector. This terminal is a +5V output.
16
USB-3101 User's Guide Functional Details
S
Slave
PMD-1608F
Master
device
Slave
device
SYNCLD pin
(terminal pin 49)
D/A LOAD signal
Configure the SYNCLD
pin for output
Configure the SYNCLD
pin for input
Caution! The +5V terminal is an output. Do not connect to an external power supply or you may damage
the USB-3101 and possibly the computer.
Synchronizing multiple units
You can connect the SYNCLD terminal pin (pin 49) of two USB-3101 units together in a master/slave configuration and simultaneously update the DAC outputs of both devices. Do the following.
1. Connect the SYNCLD pin of the master USB-3101 to the SYNCLD pin of the slave USB-3101.
2. Configure the SYNCLD pin on the slave device for input to receive the D/A LOAD signal from the master
device. Use InstaCal to set the direction of the SYNCLD pin.
3. Configure the SYNCLD pin on the master device for output to generate an output pulse on the SYNCLD
pin.
Set the Universal Library SIMULTANEOUS option for each device. Refer to the Universal Library User's Guide for information on how to configure the USB-3101 with the Universal Library.
When the SYNCLD pin on the slave device receives the signal, the analog output channels on each device are updated simultaneously.
An example of a master/slave configuration is shown here.
Figure 8. Synchronizing the update of multiple devices
17
Parameter
Conditions
Specifications
Digital to Analog converter
DAC8554
Number of channels
4 Resolution
16 bits
Output ranges
Calibrated
±10 V, 0 to 10 V Software configurable
Un-calibrated
±10.2 V, -0.04 to 10.08 V Software configurable
Output transient
±10 V to (0 to 10 V) or (0 to 10 V) to ±10 V range
selection. (Note 1)
Duration: 5 µS typ. Amplitude: 5V p-p typ.
Host PC is reset, powered on, suspended or a reset command is issued to device.
(Note 2)
Duration: 2 S typ. Amplitude: 2V p-p typ.
Initial power on
Duration: 50 mS typ. Amplitude: 5V peak typ.
Differential non-linearity (Note 3) 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 AGND
Indefinite
Output coupling
DC
Power on and reset state DACs cleared to zero-scale: 0 V, ±50 mV typ.
Output range: 0-10V
Output noise 0 to 10 V range
14.95 µVrms typ.
±10 V range
31.67 µVrms typ.
Settling time
to 1 LSB accuracy
25 µS typ.
Slew rate 0 to 10 V range
1.20 V/µS typ.
±10 V range
1.20 V/µS typ.
Throughput Single-channel
100 Hz max., system dependent
Multi-channel
100 Hz/#ch max., system dependent
Specifications
Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design.
Analog voltage output
Table 1. Analog voltage output specifications
Chapter 4
Note 1: The USB-3101 output voltage level defaults to 0V whenever the output voltage range is
reconfigured. The USB-3101 output voltage level will also default to 0V:
1) Whenever the host PC is reset, shut down or suspended.
2) If a reset command is issued to the device.
18
USB-3101 User's Guide Specifications
Range
Accuracy (±LSB)
±10 V
14.0
0 to 10 V
22.0
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
0.00055
2.746
Range
Relative accuracy (±LSB)
±10 V , 0 to 10 V
4.0 typ.
12.0 max.
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 stability: ±10 ppm/SQRT(1000 hrs)
Calibration method
Software calibration
Calibration interval
1 year
Digital logic type
CMOS
Number of I/O
8
Configuration
Independently configured for input or output
Pull-up/pull-down configuration (Note 4)
User configurable All pins floating (default)
Digital I/O input loading TTL (default)
47K ohms (pull-up/pull down configurations)
Digital I/O transfer rate (system paced)
System dependent, 33 to 1000 port reads/writes or single bit reads/writes per second.
Input high voltage
2.0 V min, 5.5 V absolute max
Input low voltage
0.8 V max, –0.5 V absolute min
Output high voltage (IOH = –2.5 mA)
3.8 V min
Output low voltage (IOL = 2.5 mA)
0.7 V max
Power on and reset state
Input
Note 2: The duration of this particular output transient is highly dependent on the enumeration process of
the host PC. Typically the output of the USB-3101 is stable after 2 seconds
Note 3: The maximum differential non-linearity specification applies to the entire 0 to 70 °C temperature
range of the USB-3101. This specification also accounts for the maximum errors due to the software calibration algorithm (in Calibrated mode only) and the DAC8554 digital to analog converter non-linearities.
Table 2. Absolute accuracy specifications – calibrated output
Table 3. Absolute accuracy components specifications – calibrated output
Table 4. Relative accuracy specifications
Analog output calibration
Table 5. Analog output calibration specifications
Digital input/output
Table 6. Digital I/O specifications
19
USB-3101 User's Guide Specifications
Parameter
Conditions
Specification
Pin name
SYNCLD (terminal block pin 49)
Power on and reset state
Input
Pin type
Bidirectional
Termination
Internal 100K ohms pull-down
Software selectable direction Output
Outputs internal D/A LOAD signal.
Input
Receives D/A LOAD signal from external source.
Input clock rate
100 Hz max
Clock pulse width Input
1 µs min
Output
5 µs min
Input leakage current
±1.0 µA typ.
Input high voltage
4.0 V min, 5.5 V absolute max
Input low voltage
1.0 V max, –0.5 V absolute min
Output high voltage (Note 5) IOH = –2.5 mA
3.3 V min
No load
3.8 V min
Output low voltage (Note 6) IOL = 2.5 mA
1.1 V max
No load
0.6 V max
Parameter
Conditions
Specification
Pin name
CTR
Number of channels
1 Resolution
32-bits
Counter type
Event counter
Input type
TTL, rising edge triggered
Counter read/writes rates (software paced)
Counter read
System dependent, 33 to 1000 reads per second.
Counter write
System dependent, 33 to 1000 reads per second.
Schmidt trigger hysteresis
20 mV to 100 mV
Input leakage current
±1.0 µA typ.
Input frequency
1 MHz max.
High pulse width
500 nS min.
Low pulse width
500 ns min.
Input high voltage
4.0 V min, 5.5 V absolute max
Input low voltage
1.0 V max, –0.5 V absolute min
Note 4: Pull up and pull down configuration area available using the DIO CTL terminal block pin 54.
The pull down configuration requires the DIO CTL pin (pin 54) to be connected to a DGND pin (pin 50, 53 or 55). For a pull up configuration, the DIO CTL pin should be connected to the +5V terminal pin (pin 56).
Synchronous DAC Load
Table 7. SYNCLD I/O specifications
Note 5: SYNCLD is a Schmitt trigger input and is over-current protected with a 200 Ohm series resistor. Note 6: When SYNCLD is in input mode, the analog outputs may either be updated immediately or when
Counter
a positive edge is seen on the SYNCLD pin (this is under software control.) However, the pin must be at a low logic level in order for the DAC outputs to be updated immediately. If an external source is pulling the pin high, no update will occur.
Table 8. CTR I/O specifications
20
USB-3101 User's Guide Specifications
EEPROM
256 bytes
EEPROM configuration Address range
Access
Description
0x000-0x0FF
Read/write
256 bytes user data
Type
High performance 8-bit RISC microcontroller
Program memory
16,384 words
Data memory
2,048 bytes
Parameter
Conditions
Specification
Supply current
USB enumeration
< 100 mA
Supply current (Note 7)
Quiescent current
140 mA typ.
+5V user output voltage range (Note 8)
Available at terminal block pin 56
4.5 V min, 5.25 V max.
+5V user output current (Note 9)
Available at terminal block pin 56
10 mA max.
USB device type
USB 2.0 (full-speed)
USB device compatibility
USB 1.1, 2.0
USB cable length
3 meters max.
USB cable type
A-B cable, UL type AWM 2527 or equivalent (min 24 AWG VBUS/GND, min 28 AWG D+/D-).
Operating temperature range
0 to 70 °C
Storage temperature range
-40 to 85 °C
Humidity
0 to 90% non-condensing
Memory
Table 9. Memory specifications
Microcontroller
Table 10. Microcontroller specifications
Power
Table 11. Power specifications
Note 7: This is the total quiescent current requirement for the USB-3101 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, or the VOUTx outputs.
Note 8: Output voltage range assumes USB power supply is within specified limits. Note 9: This refers to the total amount of current that can be sourced from the +5V user terminal (pin 56)
for general use. This specification also includes any additional contribution due to DIO loading.
USB specifications
Environmental
Table 12. USB specifications
Table 13. Environmental specifications
21
USB-3101 User's Guide Specifications
Dimensions
127 mm (L) x 88.9 mm (W) x 35.56 (H)
Connector type
Screw terminal
Wire gauge range
16 AWG to 30 AWG
Pin
Signal Name
Pin
Signal Name
1
VOUT0
29
VOUT1
2
NC
30
NC 3 VOUT2
31
VOUT3
4
NC
32
NC 5 AGND
33
AGND
6
NC
34
NC 7 NC
35
NC 8 NC
36
NC 9 NC
37
NC
10
AGND
38
AGND
11
NC
39
NC
12
NC
40
NC
13
NC
41
NC
14
NC
42
NC
15
AGND
43
AGND
16
NC
44
NC
17
NC
45
NC
18
NC
46
NC
19
NC
47
NC
20
AGND
48
AGND
21
DIO0
49
SYNCLD
22
DIO1
50
DGND
23
DIO2
51
NC
24
DIO3
52
CTR
25
DIO4
53
DGND
26
DIO5
54
DIO CTL
27
DIO6
55
DGND
28
DIO7
56
+5V
Mechanical
Table 14. Mechanical specifications
Main connector and pin out
Table 15. Main connector specifications
22
Declaration of Conformity
Manufacturer: Measurement Computing Corporation Address: 10 Commerce Way Suite 1008 Norton, MA 02766 USA
Measurement Computing Corporation declares under sole responsibility that the product
USB-3101
to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents:
Category: Electrical equipment for measurement, control and laboratory use.
EC EMC Directive 2004/108/EC: Electromagnetic Compatibility, EN 61326-1:2006, (IEC 61326-1:2005)
Emissions:
EN 55011 (1990)/CISPR 11 Radiated emissions: Group 1, Class A EN 55011 (1990)/CISPR 11 Conducted emissions: Group 1, Class B
Immunity: EN61326-1:2006, (IEC 61326-1:2005) Table 3 Immunity requirements for equipment used in controlled EM environments.
IEC 61000-4-2 (2001): Electrostatic Discharge immunity. IEC 61000-4-3 (2002): Radiated Electromagnetic Field immunity.
To maintain the safety, emission, and immunity standards of this declaration, 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 environment as defined by Standards EN
61326-1:2006, or IEC 61326-1:2005.
Shielded wires must be used for all I/Os and must be less than 3 meters (9.75 feet) in length. The host computer must be properly grounded. The host computer must be USB2.0 compliant. A protective ESD wrist strap should be used when connecting or disconnecting leads from screw
terminal blocks.
Note: Data acquisition equipment may exhibit noise or increased offsets when exposed to high RF fields (>1V/m) or transients.
Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in January, 2007. Test records are outlined in Chomerics Test Report #EMI4712.07. Further testing was conducted by Chomerics Test Services, Woburn, MA. 01801, USA in November, 2008. Test records are outlined in Chomerics Test report #EMI5193.08.
We hereby declare that the equipment specified conforms to the above Directives and Standards.
Carl Haapaoja, Director of Quality Assurance
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766
(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com
Loading...