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Your new Measurement Computing product comes with a fantastic extra —
Management committed to your satisfaction!
Refer to www.mccdaq.com/execteam.html for the names, titles, and contact information of each key executive at Measurement
Computing.
Thank you for choosing a Measurement Computing product—and 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:
ƒ
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.
Lifetime warranty: Every hardware product manufactured by Measurement Computing Corporation is warranted against
defects in materials or workmanship for the life of the product. Products found defective are repaired or replaced promptly.
Lifetime Harsh Environment Warranty®: We will replace any product manufactured by Measurement Computing
Corporation that is damaged (even due to misuse) for only 50% of the current list price. I/O boards face some tough operating
conditions, some more severe than the boards are designed to withstand. When a board becomes damaged, just return the unit
with an order for its replacement at only 50% of the current list price. We don’t need to profit from your misfortune. By the way,
we honor this warranty for any manufacturer’s board that we have a replacement for.
30 Day Money Back Guarantee: You may return any Measurement Computing Corporation product 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. Please call for an RMA number first. No credits or returns accepted without a copy of the
original invoice. Some software products are subject to a repackaging fee.
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.
HM PC-CARD-DAS16_16AO.doc
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Trademark and Copyright Information
TracerDAQ, Universal Library, Harsh Environment Warranty, 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.
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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.
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Table of Contents
Preface
What you will learn from this user's guide.........................................................................................................7
Where to find more information.........................................................................................................................7
Chapter 1
Software features................................................................................................................................................9
Chapter 2
What comes with your PC-CARD-DAS16/16AO shipment?..........................................................................10
Connecting the board for I/O operations..........................................................................................................12
Pin out – I/O connector....................................................................................................................................................12
Chapter 3
Programming and Developing Applications....................................................................................16
Register-level programming.............................................................................................................................16
Chapter 4
Triggering and transfer.....................................................................................................................................17
Chapter 5
Analog input.....................................................................................................................................................19
Analog output...................................................................................................................................................21
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PC-CARD-DAS16/16AO User's Guide
Interrupt............................................................................................................................................................22
Miscellaneous...................................................................................................................................................23
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Preface
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 PC-CARD-DAS16/16AO so that you get the
most out of its analog I/O, digital I/O and counter 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
The following conventions are used in this manual to convey special information:
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.
<#:#>
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:
Never touch the exposed pins or circuit connections on the board.
Where to find more information
The following electronic documents provide information relevant to the operation of the PC-CARD-
DAS16/16AO.
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
MCC's Specifications: PC-CARD-DAS16/16AO (the PDF version of the Specifications chapter in this
MCC's Quick Start Guide is available on our web site at
MCC's Guide to Signal Connections is available on our web site at
MCC's Universal Library User's Guide is available on our web site at
MCC's Universal Library Function Reference is available on our web site at
MCC's Universal Library for LabVIEW™ User’s Guide is available on our web site at
PC-CARD-DAS16/16AO User's Guide (this document) is also available on our web site at
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Chapter 1
Introducing the PC-CARD-DAS16/16AO
Overview: PC-CARD-DAS16/16AO features
The PC-CARD-DAS16/16AO is a data acquisition and control board for IBM PC compatible computers with
PCMCIA type II slots. The PC-CARD-DAS16/16AO provides 16 single-ended or 8 differential analog inputs,
16-bit A/D resolution, two analog outputs, four digital I/O lines, and three 16-bit down counters.
The analog input range is fully programmable in one of four bipolar ranges. An on-board pacer clock, or an
external pacer input, or software polling can trigger A/D conversions. Transfers are via software polling,
interrupt service or REP-INSW. A 4096-word FIFO buffer provides buffering between the A/D circuit and the
PCMCIA bus.
The PC-CARD-DAS16/16AO provides two single-ended 16-bit analog voltage outputs. The analog output
range is ±10 V.
The four digital I/O bits are available on one 4-bit port. The digital channels are software configurable as four
inputs or four outputs, and allow you to sense and control discrete events.
All signals pass through a 50-pin high-density connector. The board is completely plug-and-play, with no
switches or jumpers to set.
PC-CARD-DAS16/16AO block diagram
PC-CARD-DAS16/16AO functions are illustrated in the block diagram shown here.
Precision
Voltage
Reference
Programmable-Gain
Amplifier
8 channel
Analog MUX
FIFO Buffer 4K x 8
HI_BYTE
ADC
16-bit
5 µS
FIFO Buffer 4K x 8
LOW_BYTE
8 channel
Analog MUX
A/D
Pacer
Control
/Clock
Digital I/O
4-bits
Counter/Pacer
Controller FPGA
10 MHz
Pacer Control
/EXT TRIG
Oscillator
Control, IREQ
VREF
Counter 1, 3 Out
2
Data Bus
VOUT 0
VOUT 1
DAC
16-bit
Attribute Memory
Address Bus
DAC
16-bit
Figure 1. PC-CARD-DAS16/16AO functional block diagram
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PC-CARD-DAS16/16AO User's Guide
Introducing the PC-CARD-DAS16/16AO
Software features
For information on the features of InstaCal and the other software included with your PC-CARD-
DAS16/16AO, refer to the Quick Start Guide that shipped with your device. The Quick Start Guide is also
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Chapter 2
Installing the PC-CARD-DAS16/16AO
What comes with your PC-CARD-DAS16/16AO shipment?
The following items are shipped with the PC-CARD-DAS16/16AO.
Hardware
ƒ
PC-CARD-DAS16/16AO
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 PC-CARD-DAS16/16AO and information regarding installation of that
software. Please read this booklet completely before installing any software or hardware.
Optional components
ƒ
Cables
CPCC-50F-39
CPCC-50M-4
C50FF-x
ƒ
Signal termination and conditioning accessories
MCC provides signal conditioning and termination products for use with the PC-CARD-DAS16/16AO.
products.
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PC-CARD-DAS16/16AO User's Guide
Installing the PC-CARD-DAS16/16AO
Unpacking the PC-CARD-DAS16/16AO
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PC-CARD-DAS16/16AO 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.
If any components are missing or damaged, notify Measurement Computing Corporation immediately by
phone, fax, or e-mail:
ƒ
ƒ
ƒ
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: [email protected]
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-
Installing the PC-CARD-DAS16/16AO
The PC-CARD-DAS16/16AO board is completely plug-and-play. There are no switches or jumpers to set. To
install your board, follow the steps below.
Install the MCC DAQ software before you install your board
The driver needed to run your board is installed with the MCC DAQ software. Therefore, you need to install
the MCC DAQ software before you install your board. Refer to the Quick Start Guide for instructions on
installing the software.
To install your PC-Card, do the following:
ƒ
Insert the card into a free PC Card/PCMCIA type II or III slot. The key helps to insure that the cable is
inserted in the correct orientation.
You do not have to turn the computer off. The system is designed for power-on installation. You should
hear an insertion beep when you insert the card.
Figure 2. End view of the 50-pin PC-CARD connector showing proper orientation
Windows automatically detects, recognizes, and configures the PC-CARD. You should hear an insertion beep
when you insert the card into the slot. To verify that the card is recognized, go to Control Panel\System\Device
Manager and the card should now appear under "DAS Component."
If your PCMCIA card is not detected
If the card is not detected by Windows, and you are not prompted for a driver after inserting the card, check
that your computer's 32-bit PCMCIA drivers are installed and enabled. Do the following:
1. From your desktop, right-click on My Computer and select Properties. The System Properties dialog
opens.
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PC-CARD-DAS16/16AO User's Guide
Installing the PC-CARD-DAS16/16AO
2. Select the Hardware tab and click on the Device Manager button.
3. Verify that "PCMCIA adapters" is listed in the Device Manager. If you don’t find this entry, or if the
properties for the adapter indicate "this device is not working," you need to install or update your PCMCIA
adapter drivers.
o
o
If the PCMCIA adapter is not listed, use the Add New Hardware Wizard to install PCMCIA support.
If the PCMCIA adapter is listed but not working, use the Update Driver option to install the
appropriate drivers.
After performing the update procedure, reboot your PC and insert your card again.
Connecting the board for I/O operations
Connectors, cables – I/O connector
The table below lists the board connector, applicable cables, and compatible accessory products.
Board connector, cables, and accessory equipment
Connector type
50-pin connector
ƒ CPCC-50F-39: 50-pin Micro connector to 50-pin female IDC, one-meter cable (39 inches).
ƒ CPCC-50M-4: 50-pin Micro connector to 50-pin male IDC, 4 inch adapter cable.
and
Compatible cables
ƒ C50FF-x: 50-pin IDC female to female cable. x = length in feet.
Compatible accessory CIO-MINI50
products
SCB-50
Pin out – I/O connector
Figure 3 shows a PC-CARD-DAS16/16AO case looking into the male mini-connector. The connector is
mechanically keyed to insure that the cable is inserted correctly.
Figure 3. 50-pin I/O mini-connector
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PC-CARD-DAS16/16AO User's Guide
Installing the PC-CARD-DAS16/16AO
Cabling
Measurement Computing offers two cables for connecting the PC-CARD-DAS16/16AO to a screw-type
terminal board or other signal conditioning interface board:
ƒ
ƒ
The CPCC-50F-39 cable: 39 inches (990 mm) long; compatible with standard 50-pin screw terminal
products.
The CPCC-50M-4 cable: four-inch long adapter cable; required when using a C50FF-x series cable.
AGND
CH0 LO
CH1 LO
CH2 LO
CH3 LO
CH4 LO 11
CH5 LO 13
CH6 LO 15
CH7 LO 17
N/C 19
1
3
5
7
9
2
4
6
8
CH0 HI
CH1 HI
CH2 HI
CH3 HI
CH0 HI
CH1 HI
CH2 HI
CH3 HI
CH4 HI 10
CH5 HI 12
CH6 HI 14
CH7 HI 16
AGND 18
2
4
6
8
1
3
5
7
9
AGND
CH0 LO
CH1 LO
CH2 LO
CH3 LO
1
10 CH4 HI
12 CH5 HI
14 CH6 HI
16 CH7 HI
18 AGND
20 N/C
11 CH4 LO
13 CH5 LO
15 CH6 LO
17 CH7 LO
19 N/C
N/C 20
N/C 21
22 N/C
N/C 22
21 N/C
N/C 23
24 N/C
N/C 24
23 N/C
N/C 25
DIO0 27
26 DGND
28 DIO1
DGND 26
DIO1 28
25 N/C
27 DIO0
DIO2 29
N/C 31
30 DIO3
32 N/C
DIO3 30
DIO5 32
29 DIO2
31 DIO4
N/C 33
34 N/C
DIO7 34
33 DIO6
DA GND0 35
DA GND1 37
CTR1 CLK 39
CTR1 OUT 41
External Interrupt 43
A/D External Trigger 45
A/D Pacer Out 47
N/C 49
36 DA OUT0
38 DA OUT1
40 CTR1 GATE
42 A/D External Pacer
44 A/D Pacer Gate
46 N/C
DA OUT0 36
DA OUT1 38
CTR1 GATE 40
A/D External Pacer 42
A/D Pacer Gate 44
N/C 46
35 DA GND0
37 DA GND1
39 CTR1 CLK
41 CTR1 OUT
43 External Interrupt
45 A/D External Trigger
47 A/D Pacer Out
49 N/C
50
PC-CARD end
48 +5V Power
50 DGND
+5V Power 48
DGND 50
CPCC-50F-39 cable end
(connect to screw terminal or relay boards)
CPCC-50M-4 cable end
(connect to C50FF-x)
Figure 4. Differential mode cable map — PC-CARD to CPCC-50M-4 and to CPCC-50F-39
AGND
CH8 IN
CH9 IN
CH10 IN
CH11 IN
CH12 IN 11
CH13 IN 13
CH14 IN 15
CH15 IN 17
N/C 19
1
3
5
7
9
2
4
6
8
CH0 IN
CH1 IN
CH2 IN
CH3 IN
CH0 IN
CH1 IN
CH2 IN
CH3 IN
CH4 IN 10
CH5 IN 12
CH6 IN 14
CH7 IN 16
AGND 18
2
4
6
8
1
3
5
7
9
AGND
CH8 IN
CH9 IN
CH10 IN
CH11 IN
1
10 CH4 IN
12 CH5 IN
14 CH6 IN
16 CH7 IN
18 AGND
11 CH12 IN
13 CH13 IN
15 CH14 IN
17 CH15 IN
19 N/C
20 N/C
N/C 20
N/C 21
22 N/C
N/C 22
21 N/C
N/C 23
N/C 25
24 N/C
26 DGND
N/C 24
DGND 26
23 N/C
25 N/C
DIO0 27
DIO2 29
28 DIO1
30 DIO3
DIO1 28
DIO3 30
27 DIO0
29 DIO2
DIO4 31
DIO6 33
32 DIO5
34 DIO7
DIO5 32
DIO7 34
31 DIO4
33 DIO6
DA GND0 35
DA GND1 37
CTR1 CLK 39
CTR1 OUT 41
External Interrupt 43
A/D External Trigger 45
A/D Pacer Out 47
N/C 49
36 DA OUT0
38 DA OUT1
40 CTR1 GATE
42 A/D External Pacer
44 A/D Pacer Gate
46 N/C
DA OUT0 36
DA OUT1 38
CTR1 GATE 40
A/D External Pacer 42
A/D Pacer Gate 44
N/C 46
35 DA GND0
37 DA GND1
39 CTR1 CLK
41 CTR1 OUT
43 External Interrupt
45 A/D External Trigger
47 A/D Pacer Out
49 N/C
50
PC-CARD end
48 +5V Power
50 DGND
+5V Power 48
DGND 50
CPCC-50F-39 cable end
(connect to screw terminal or relay boards)
CPCC-50M-4 cable end
(connect to C50FF-x)
Figure 5. Single-ended mode cable map — PC-CARD to CPCC-50M-4 and to CPCC-50F-39
Note
Digital signals should not be grounded to an analog ground (AGND) pin. Use a digital ground (DGND) pin.
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PC-CARD-DAS16/16AO User's Guide
Installing the PC-CARD-DAS16/16AO
Caution! Do not exceed the input specifications. There are no socketed or user serviceable parts in a PC-
CARD-DAS16/16AO. Check the specifications and input voltages before connecting any signals.
CPCC-50F-39
49
50
50
1
Key
Dot
1
2
50-pin micro connector.
Connect to the I/O connector
on the PC-CARD
50-pin female IDC connector.
with the dot facing UP.
Figure 6. CPCC-50F-39 cable connections
Details on the CPCC-50F-39 cable are available on our web site at
CPCC-50M-4
If your application requires a cable that is longer than one meter in length, use the CPCC-50M-4 four-inch
cable, and connect to a C50FF-x cable.
50
49
50
1
Dot
2
1
50-pin micro connector.
Connect to the I/O connector
on the PC-CARD
50-pin male IDC connector.
Connect to a C50FF-x cable.
with the dot facing UP.
Figure 7. CPCC-50M-4 cable connections
Details on the CPCC-50M-4 cable are available on our web site at
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PC-CARD-DAS16/16AO User's Guide
Installing the PC-CARD-DAS16/16AO
C50FF-x
The red stripe
identifies pin # 1
2
1
2
1
50
49
50
49
50-pin female
IDC connector
50-pin female
IDC connector
Figure 8. C50FF-x cable
Details on the C50FF-x cable are available on our web site at
Field wiring and signal termination
You can use the following cabling, screw termination, and signal conditioning products with the CPCC-50F-39
cable, or with the CPCC-50M-4 and C50FF-x cables:
ƒ
ƒ
CIO-MINI50 – 50-pin screw terminal board. Details on this product are available on our web site at
SCB-50 – 50 conductor, shielded signal connection/screw terminal box provides two independent 50-pin
connections. Details on this product are available on our web site at
Information on signal connections
General information regarding signal connection and configuration is available in the Guide to Signal
Calibrating the PC-CARD-DAS16/16AO
The PC-CARD-DAS16/16AO features auto-calibration with InstaCal. Calibration coefficients for each range
are stored on board in nonvolatile RAM. The normal calibration interval is once per year.
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Chapter 3
Programming and Developing Applications
After following the installation instructions in Chapter 2, your board should now be installed and ready for use.
In general there may be no correspondence among registers for different boards. Software written at the
register-level for other models does not function correctly with your board.
Programming languages
Measurement Computing’s Universal Library provides access to board functions from a variety of Windows
programming languages. If you are planning to write programs, or would like to run the example programs for
Visual Basic or any other language, please refer to the Universal Library User's Guide (available on our web
Packaged applications programs
Many packaged application programs now have drivers for your board. If the package you own does not have
drivers for the board, please fax or e-mail the package name and the revision number from the install disks. We
will research the package for you and advise how to obtain drivers.
Some application drivers are included with the Universal Library package, but not with the application package.
If you have purchased an application package directly from the software vendor, you may need to purchase our
Universal Library and drivers. Please contact us by phone, fax or e-mail:
ƒ
ƒ
ƒ
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: [email protected]
Register-level programming
You should use the Universal Library or one of the packaged application programs mentioned above to control
your board. Only experienced programmers should try register-level programming.
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Chapter 4
Functional Details
Analog input resolution and range
The 16-bit A/D converter provides a resolution of 1/65,536 parts of full scale. The smallest reading of full scale
(1 part in 65,536) is called a Least Significant Bit (LSB). Four different bipolar ranges are controlled by
software:
Analog input ranges
Bipolar
1 LSB
±10 V
±5 V
0.000305 V
0.000153 V
0.000076 V
0.000038 V
±2.5 V
±1.25 V
The input range is controlled by a programmable-gain amplifier.
Conversion speed and amplification
The A/D chip always runs at full speed. The A/D converter and sample & hold circuit captures and digitizes a
signal in 5 µs. The conversion speed of the A/D remains constant in all conditions and at all throughput rates.
When you request a sample rate of say 20 kHz, the A/D converter is still converting the signal in 5 µs. The
20 kHz rate comes from the fact that conversions are being initiated only every 50 µs.
What factors limit conversion speed?
The first is clearly the A/D. A 5µs conversion speed translates to a maximum throughput of 200 kHz. The
second limiting factor can be the analog front end.
The front end may consist of a multiplexer and a programmable gain amplifier. The speed at which these
circuits can switch may also limit the throughput of the A/D board. That is, the rate at which it can acquire,
convert and transfer a signal with full accuracy. Accuracy is the key term here. The A/D can always run at full
speed, but has the front end settled and captured a true, accurate signal?
What about input range vs. speed?
The design of the analog front end is crucial to maintaining total throughput. Most A/D chips have a fixed input
range, typically ±5V. The analog front end amplifies low level signals and adjusts unipolar signals to match the
A/D converter's standard input. The PC-CARD-DAS16/16AO achieves 200 kHz in all of the four ranges for
single channel acquisitions.
Triggering and transfer
A trigger begins an acquisition/transfer cycle. There are three ways to trigger a PC-CARD-DAS16/16AO —
programmable pacer, software, or external. The trigger source selection is programmable.
The programmable pacer is the quotient of two 16-bit counters dividing a 10 MHz or 1 MHz wave derived
from a 10 MHz crystal oscillator which can be used to trigger any number of paced conversions. A single
conversion can be triggered by software at any time. External trigger, pacer clock and gate signals may also be
used to control conversions and synchronize to external events.
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PC-CARD-DAS16/16AO User's Guide
Functional Details
After a conversion is made, the sample is stored in a 4096-word (sample) FIFO buffer from which it may be
retrieved one sample at a time or in blocks via REP-INSW transfers.
How does the FIFO size and design affect throughput?
The 4096-sample FIFO buffer stores samples from the A/D converter as they are being converted. When a
block of samples is ready and when the PC is ready, the FIFO is emptied into system memory. Most FIFO
designs employ a half-full transfer initiation circuit. When the FIFO is half full, the transfer request is made.
Samples continue to fill the second half of the FIFO while the CPU responds to the transfer request and
transfers data to system memory.
A/D pacer clock
Many analog acquisitions can be handled by a simple on-board rate divider created by combining an XTAL
with a programmable counter. For those, the on-board 82C54 programmable rate generator (counter) supplies
the pacing. However, some applications require customized rate control.
The PC-CARD-DAS16/16AO analog conversions may be externally triggered and thereby synchronized with
events external to the computer. Conversions can be held off until some external event, such as a not-to-exceed
condition is met. Conversions may be externally gated so that samples are taken only when an event of interest
is occurring, such as a process going over normal limits.
Figure 9 shows a logic diagram of the A/D pacer clock and counters.
Control Register BASE + 6h
CRT1 CLK
CTR1 GATE
CTR1 OUT
39
40
TRGPOL TRGSEL TRGCLR
CLK2 CTR1
10K
5
10K
5
GATE
CLK
OUT
Counter 1
41
1/10
1/10
0
1
CLK
OUT
OUT
Counter 2
Counter 3
GATE
10 MHz
OSC
CLK
A/D INTERNAL
PACER OUT
47
GATE
Trigger
Logic
44
45
A/D PACER GATE
A/D EXTERNAL
TRIGGER
Control register
BASE + 4h
TS1 TS0
0
3
2
1
A/D Convert CLock
MUX
A/D EXTERNAL
CLOCK
Trigger
Logic
1
0
42
S/W CONVERT
Figure 9. Counter/pacer logic diagram
18
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Chapter 5
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input
Table 1. Analog input specifications
AD976A
A/D converter type
Resolution
16 bits
Number of channels
Input ranges
16 single-ended / 8 differential, software selectable
±10 V, ±5 V, ±2.5 V, ±1.25 V, software programmable
ƒ Internal counter - 82C54
A/D pacing
ƒ External source - A/D External Pacer, software programmable for rising or
falling edge
(software programmable)
ƒ Software polled
A/D trigger sources
A/D triggering modes
A/D gate sources
External edge trigger (A/D External Trigger)
Rising or falling edge trigger - software selectable
A/D External Trigger, gate high or low, software selectable
A/D Pacer Gate, gate high
Burst mode
Software selectable option, burst rate = 100 kHz
From 4 k sample FIFO via REPINSW
Programmed I/O
Data transfer
A/D conversion time
5 µs max
Calibrated throughput
200 kHz single channel, 100 kHz multiple channel. Minimum
system requirement is Pentium II, 400 MHz.
Calibration
Auto-calibration, calibration factors for each range stored on board in nonvolatile
RAM
Accuracy
Accuracies are listed for a 200 kHz sampling rate, single channel operation, a 60 minute warm-up, and
operational temperatures within ±2 °C of internal calibration temperature. The calibrator test source high side is
tied to Channel 0 In, and the low side tied to AGND.
Table 2. Absolute Accuracy specifications
Range
Absolute accuracy
±10.00 V
±5.000 V
±2.500 V
±1.250 V
±5.0 LSB max
±5.0 LSB max
±5.0 LSB max
±5.0 LSB max
Each PC-CARD-DAS16/16AO is tested at the factory to assure the board’s overall error does not exceed
accuracy limits described in Table 2.
19
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Specifications
Table 3. Calibrated accuracy specifications
(Note 1)
(Note 1)
Range
Gain Error
Offset Error
DLE
ILE
±10.00 V
±5.000 V
±2.500 V
±1.250 V
±3 max
±3 max
±3 max
±3 max
±1.5 max
±1.5 max
±1.5 max
±1.5 max
-1.0, +1.75 max
-1.0, +1.75 max
-1.0, +1.75 max
-1.0, +1.75 max
±2.0 max
±2.0 max
±2.0 max
±2.0 max
Note 1: These are the intrinsic specifications of the ADC. Software calibration may introduce a small
additional amount of linearity error.
As shown in Table 3, total board error is a combination of gain, offset, differential linearity and integral
linearity error. The theoretical worst-case error of the board may be calculated by summing these component
errors. Worst case errors are realized only in the unlikely event that each of the component errors are at their
maximum level, and causing error in the same direction.
Analog input full-scale gain drift
Analog input zero drift
Overall analog input drift
Common mode range
±0.60 LSB/°C max
±0.15 LSB/°C max
±0.75 LSB/°C max
±10 V min
CMRR @ 60 Hz
-76 dB min
Input leakage current
±20 nA max
Input impedance
10 MOhms min
Absolute maximum input voltage
+55/-40 V (fault protected via input mux)
Crosstalk
Crosstalk is defined here as the influence of one channel upon another when scanning two channels at the
maximum rate. A full scale 100 Hz triangle wave is input on channel 1; channel 0 is tied to analog ground at the
connector. The table below summarizes the influence of channel 1 on channel 0 with the effects of noise
removed. The residue on channel zero is described in LSB's.
Table 4. Channel to channel crosstalk specifications
Condition
Crosstalk
Per channel Rate
ADC Rate
±10.00 V
±5.000 V
±2.500 V
±1.250 V
5LSB pk-pk
6LSB pk-pk
7LSB pk-pk
10LSB pk-pk
50 kHz
50 kHz
50 kHz
50 kHz
100 kHz
100 kHz
100 kHz
100 kHz
Noise performance
Table 5 summarizes the noise performance for the PC-CARD-DAS16/16AO. Noise distribution is determined
by gathering 50K samples at 200 kHz with inputs tied to ground at the user connector.
Table 5. Noise performance specifications
Range
% within ±2 LSBs
% within ±1 LSB
Typical LSBrms*
Max LSBrms*
All ranges
78%
47%
1.8
4.7
* RMS noise is defined as the peak-to-peak bin spread divided by 6.6.
20
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Specifications
Analog output
Table 6. Analog output specifications
D/A converter type
Resolution
LTC1655
16 bits
Number of channels
Configuration
Output range
D/A pacing
2
Voltage output, single-ended
±10 V
Software
Data transfer
Throughput
Programmed I/O
System dependent. Using the Universal Library programmed output
function (cbAout) in a loop in Visual Basic, a typical update rate of
1.5 kHz (±200 Hz) can be expected. The rate was measured on a
400 MHz Pentium II based PC.
Accuracy
Table 7. Accuracy specifications
Absolute accuracy
Typical accuracy
±12.0 LSB worst case error
±10.0 LSB worst case error
Table 8. Calibrated accuracy components
Gain error
±3.0 LSB max, ±1.0 LSB typ
±1.5 LSB max, ±0.5 LSB typ
±20.0 LSB max, ±8.0 LSB typ
±1.0 LSB max, ±0.3 LSB typ
Offset error
Integral linearity error
Differential linearity error
Each PC-CARD-DAS16/16AO is tested at the factory to assure the board’s overall error does not exceed
±12.0 LSB.
Total board error is a combination of gain, offset, integral linearity and differential linearity error. The
theoretical worst-case error of the board may be calculated by summing these component errors. Worst case
error is realized only in the unlikely event that each of the component errors are at their maximum level, and
causing error in the same direction. Although an examination of the chart and a summation of the maximum
theoretical errors shows that the board could theoretically exhibit a ±25.5 LSB error, our testing assures this
error is never realized in a board that we ship.
Typical accuracy is derived directly from the various component typical errors. This typical, maximum error
calculation for the PC-CARD-DAS16/16AO yields ±10.0 LSB. However, this again assumes that each of the
errors contributes in the same direction and the ±10.0 LSB specification is quite conservative.
Monotonicity
Guaranteed monotonic over temperature
±5.0 LSB/°C max
±0.5 LSB/°C max
±5.5 LSB/°C max
± 0.7 V/µs min
Analog output full-scale gain drift
Analog output zero drift
Overall analog output drift
Slew rate
Current drive
±2 mA min
Output short-circuit duration
Output coupling
Indefinite @ 12 mA
DC
Output impedance
0.1 ohms max
21
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Specifications
Miscellaneous
Double buffered output latches
Coding: Offset Binary (0 code = -FS, 65535 code = +FS)
Output voltage on power up and reset: -10 V (-FS)
Digital input/output
Table 9. DIO specifications
Digital type
FPGA
Number of I/O
Configuration
4
One port, programmable
4 input or 4 output
0.8 V max
Input low voltage
Input high voltage
2.0 V min
Output low voltage (IOL = 4 mA)
Output high voltage (IOH = -4 mA)
Absolute maximum input voltage
Power-up / reset state
0.32 V max
3.86 V min
-0.5 V , +5.5 V
Input mode (high impedance)
Interrupt
Table 10. Interrupt specifications
Interrupts
Programmable: Levels 2 – 15
Programmable. Default = disabled.
External (External Interrupt)
A/D End-of-channel-scan
A/D FIFO-not-empty
Interrupt enable
Interrupt sources
A/D FIFO-half-full
A/D Pacer
22
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PC-CARD-DAS16/16AO User's Guide
Specifications
Counter
Table 11. Counter specifications
Counter type
82C54
Configuration
3 down counters, 16 bits each
Source: Programmable external (Ctr 1 Clk) or 100 kHz internal source
Gate: Available at connector (Ctr 1 Gate), pulled to logic high via 10K
Counter 1 - User counter
resistor (See Note 2)
Output: Available at connector (Ctr 1 Out)
Source: Programmable, 1MHz or 10 MHz internal source
Counter 2 - ADC Pacer Lower Divider
Counter 3 - ADC Pacer Upper Divider
Gate:
Available at connector (A/D Pacer Gate), pulled to logic high
via 10K resistor.
Output: Chained to Counter 3 Clock
Source: Counter 2 Output
Gate:
Internal
Output: Programmable as ADC Pacer clock. Available at user connector
(ADC Pacer out)
Clock input frequency
High pulse width (clock input)
Low pulse width (clock input)
Gate width high
10 MHz max
30 ns min
50 ns min
50 ns min
50 ns min
0.8 V max
2.0 V min
0.4 V max
3.0 V min
10 MHz
Gate width low
Input low voltage
Input high voltage
Output low voltage
Output high voltage
Crystal oscillator frequency
Frequency accuracy
50 ppm
Note 2: If you are not driving the gate of User Counter 1, it is strongly recommended that it be connected to
+5V (VDD).
Power consumption
Table 12. Power consumption specifications
5V quiescent
150 mA typical, 170 mA max
Miscellaneous
Table 13. Miscellaneous specifications
+5 Volts
Available at I\O connector (+5V Power)
Protected by resettable fuse:
Hold current:
350 mA max @ 20 °C still air
Trip current:
Trip and recovery time:
On resistance:
700 mA min @ 20 °C still air
100 mS max
1.3 Ohms max
23
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PC-CARD-DAS16/16AO User's Guide
Specifications
Environmental
Table 14. Environmental specifications
Operating temperature range
Storage temperature range
Humidity
0 to 70 °C
-40 to 100 °C
0 to 95% non-condensing
Mechanical
Table 15. Mechanical specifications
Card dimensions
PCMCIA type II: 85.6 mm (L) x 54.0 mm (W) x 5.0 mm (H)
Connector and pin out
Table 16. Connector specifications
Connector type
50-pin connector
Compatible cables
CPCC-50F-39: 50-pin Micro connector to 50-pin female IDC, one-meter cable
(39 inches).
CPCC-50M-4: 50-pin Micro connector to 50-pin male IDC, 4 inch adapter cable.
and
C50FF-x: 50-pin IDC female to female cable. x = length in feet.
Compatible accessory products
CIO-MINI50
SCB-50
Table 17. 8-channel Differential mode pin out
Pin
1
2
3
4
5
6
7
8
Signal Name
AGND
CH0 HI
CH0 LO
CH1 HI
CH1 LO
CH2 HI
CH2 LO
CH3 HI
CH3 LO
CH4 HI
CH4 LO
CH5 HI
CH5 LO
CH6 HI
CH6 LO
CH7 HI
CH7 LO
AGND
N/C
Pin
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Signal Name
DGND
DIO0
DIO1
DIO2
DIO3
NC
NC
NC
NC
DA GND0
DA OUT0
DA GND1
DA OUT1
CTR1 CLK
CTR1 GATE
CTR1 OUT
A/D EXTERNAL PACER
EXTERNAL INTERRUPT
A/D PACER GATE
A/D EXTERNAL TRIGGER
N/C
A/D PACER OUT
VDD +5V POWER
N/C
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
N/C
N/C
N/C
N/C
N/C
N/C
DGND
24
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Specifications
Table 18. 16-channel Single-ended mode pin out
Pin
1
2
3
4
5
6
7
8
Signal Name
AGND
CH0 IN
CH8 IN
CH1 IN
CH9 IN
CH2 IN
CH10 IN
CH3 IN
CH11IN
CH4 IN
CH12 IN
CH5 IN
CH13 IN
CH6 IN
CH14 IN
CH7 IN
CH15 IN
AGND
N/C
Pin
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Signal Name
DGND
DIO0
DIO1
DIO2
DIO3
NC
NC
NC
NC
DA GND0
DA OUT0
DA GND1
DA OUT1
CTR1 CLK
CTR1 GATE
CTR1 OUT
A/D EXTERNAL PACER
EXTERNAL INTERRUPT
A/D PACER GATE
A/D EXTERNAL TRIGGER
N/C
A/D PACER OUT
VDD +5V POWER
N/C
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
N/C
N/C
N/C
N/C
N/C
N/C
DGND
25
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Declaration of Conformity
Manufacturer:
Address:
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, MA 02766
USA
Category: Electrical equipment for measurement, control and laboratory use.
Measurement Computing Corporation declares under sole responsibility that the product
PC-CARD-DAS16/16AO
to which this declaration relates is in conformity with the relevant provisions of the following standards or
other documents:
EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN 61326 (1997) Amendment 1 (1998)
Emissions: Group 1, Class A
ƒ
EN 55011 (1990)/CISPR 11: Radiated and Conducted emissions.
Immunity: EN61326, Annex A
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
IEC 1000-4-2 (1995): Electrostatic Discharge immunity, Criteria C.
IEC 1000-4-3 (1995): Radiated Electromagnetic Field immunity Criteria B.
IEC 1000-4-4 (1995): Electric Fast Transient Burst immunity Criteria B.
IEC 1000-4-5 (1995): Surge immunity Criteria A.
IEC 1000-4-6 (1996): Radio Frequency Common Mode immunity Criteria C.
IEC 1000-4-11 (1994): Voltage Dip and Interrupt immunity Criteria A.
Tests to IEC 1000-4-8 were not required. The PC cards do not contain components that would be susceptible
to magnetic fields.
Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
June, 2004. Test records are outlined in Chomerics Test Report #EMI3903.04.
We hereby declare that the equipment specified conforms to the above Directives and Standards.
Carl Haapaoja, Director of Quality Assurance
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Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766
(508) 946-5100
Fax: (508) 946-9500
E-mail: [email protected]
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