IOtech DaqBoard/500 Quick user guide

© 2005, 2006 by IOtech, Inc. 969293 Printed in the United States of America
DaqBoard/500 Series User’s Manual
16-Bit PCI-bus Data Acquisition Boards
Requires one of the following
Operating Systems:
Windows 2000
Windows XP
A Hardware Reference Manual for:
DaqBoard/500
DaqBoard/505
IOtech, Inc.
25971 Cannon Road
Cleveland, OH 44146-1833
Phone: [phone]
Fax: [phone]
E-mail (Product Information): [email protected]
E-mail (Technical Support): [email protected]
Internet: www.iotech.com
DaqBoard/500 Series
User’s Manual
16-Bit PCI-bus
Data Acquisition Boards
p/n 1138-0901 Rev. 2.2

ii

Warranty Information
Your IOtech warranty is as stated on the product warranty card. You may contact IOtech by phone,
fax machine, or e-mail in regard to warranty-related issues.
Phone: [phone], fax: [phone], e-mail: [email protected]
Limitation of Liability
IOtech, Inc. cannot be held liable for any damages resulting from the use or misuse of this product.
Copyright, Trademark, and Licensing Notice
All IOtech documentation, software, and hardware are copyright with all rights reserved. No part of this product may be
copied, reproduced or transmitted by any mechanical, photographic, electronic, or other method without IOtech’s prior
written consent. IOtech product names are trademarked; other product names, as applicable, are trademarks of their
respective holders. All supplied IOtech software (including miscellaneous support files, drivers, and sample programs)
may only be used on one installation. You may make archival backup copies.
CE Notice
Many IOtech products carry the CE marker indicating they comply with the safety and emissions standards of the
European Community. As applicable, we ship these products with a Declaration of Conformity stating which
specifications and operating conditions apply.
Warnings, Cautions, Notes, and Tips
Refer all service to qualified personnel. This caution symbol warns of possible personal injury or equipment damage
under noted conditions. Follow all safety standards of professional practice and the recommendations in this manual.
Using this equipment in ways other than described in this manual can present serious safety hazards or cause equipment
damage.
This warning symbol is used in this manual or on the equipment to warn of possible injury or death from electrical
shock under noted conditions.
This ESD caution symbol urges proper handling of equipment or components sensitive to damage from electrostatic
discharge. Proper handling guidelines include the use of grounded anti-static mats and wrist straps, ESD-protective
bags and cartons, and related procedures.
This symbol indicates the message is important, but is not of a Warning or Caution category. These notes can be of
great benefit to the user, and should be read.
In this manual, the book symbol always precedes the words “Reference Note.” This type of note identifies the location
of additional information that may prove helpful. References may be made to other chapters or other documentation.
Tips provide advice that may save time during a procedure, or help to clarify an issue. Tips may include additional
reference.
Specifications and Calibration
Specifications are subject to change without notice. Significant changes will be addressed in an addendum or revision to
the manual. As applicable, IOtech calibrates its hardware to published specifications. Periodic hardware calibration is
not covered under the warranty and must be performed by qualified personnel as specified in this manual. Improper
calibration procedures may void the warranty.
Quality Notice
IOtech has been an ISO 9001 registered firm since 1996. Prior to shipment, we thoroughly test our products and
review our documentation to assure the highest quality in all aspects. In a spirit of continuous improvement,
IOtech welcomes your suggestions.
DaqBoard/500 Series User’s Manual iii

iv 989394 DaqBoard/500 Series User’s Manual
Your order was carefully inspected prior to shipment. When you receive your system, carefully
unpack all items from the shipping carton and check for physical signs of damage that may have
occurred during shipment. Promptly report any damage to the shipping agent and your sales
representative. Retain all shipping materials in case the unit needs returned to the factory.
CAUTION
Using this equipment in ways other than described in this manual can cause
personal injury or equipment damage. Before setting up and using your
equipment, you should read all documentation that covers your system.
Pay special attention to Warnings and Cautions.
Note: During software installation, Adobe®PDF versions of user manuals will automatically
install onto your hard drive as a part of product support. The default location is in the
Programs group, which can be accessed from the Windows Desktop. Initial
navigation is as follows:
Start [Desktop “Start” pull-down menu]
⇒Programs
⇒IOtech DaqX Software
You can also access the PDF documents directly from the data acquisition CD by using
the <View PDFs> button located on the opening screen.
Refer to the PDF documentation for details regarding both hardware and software.
A copy of the Adobe Acrobat Reader®is included on your CD. The Reader provides
a means of reading and printing the PDF documents. Note that hardcopy versions of
the manuals can be ordered from the factory.
PDFs
DaqBoard 500 Series.pdf p/n 1038-0901
Contains the DaqBoard/500 Series hardware-related information, including pinouts,
block diagrams, and specifications.
DaqView.pdf p/n 457-0909
Discusses how to install and use the DaqView “out-of-the-box” data acquisition
program.
ViewXL.pdf p/n 457-0909
Discusses how to install and use ViewXL, an add-in which augments Microsoft Excel
with data acquisition capability.
PostAcquisition Analysis.pdf p/n 1086-0926 and p/n 1086-0922
This pdf consists of two documents. The first discusses eZ-PostView, a post data
acquisition analysis program. The application is included free as a part of product
support. The second includes information regarding eZ-FrequencyView and eZ-
TimeView. These two applications have more features than does eZ-PostView and are
available for purchase. They can; however, be used freely during a 30-day trial
period.

DaqBoard/500 Series 989394 v
Table of Contents
DaqBoard/500 Series, Installation Guide (p/n 1138-0940)
1 – Introduction
Basic Information …… 1-1
Block Diagram …… 1-2
Board Features …… 1-3
2 – Connections and Pinouts
Overview …… 2-1
68-Pin SCSI Type III Connector …… 2-2
Signal Definitions …… 2-3
TB-100 Terminal Connector Option …… 2-6
External Connections …… 2-7
3 – Configuration
Configuration through Software …… 3-1
Analog Input Configuration …… 3-1
ADC Ranges …… 3-1
DAC Ranges …… 3-2
4 – Software and Board Operation
Overview …… 4-1
Out-of-the-Box Software ……4-1
Drivers for Third-Party, Icon Driven Software …… 4-2
DaqCOM Driver …… 4-2
Theory of Operation …… 4-3
5 – CE-Compliance
Overview …… 5-1
CE Standards and Directives …… 5-1
Safety Conditions …… 5-2
Emissions/Immunity Conditions …… 5-2
6 – Specifications
Glossary

vi 989394 DaqBoard/500 Series
This page is intentionally blank.

DaqBoard/500 Series Installation
This guide tells how to complete the following steps for a successful installation.
Step 1 – Install Software …… page 2
Step 2 – Install Boards in Available PCI Bus-Slots …… page 3
Step 3 – Configure Boards ….. page 5
Step 4 – Test Hardware ….. page 6
Reference Note:
After you have completed the installation you should refer to the electronic documents that
were automatically installed onto your hard drive as a part of product support. The default
location is in the Programs group, which can be accessed from the Windows Desktop.
You should keep your DaqBoard’s serial number and your DaqView/500 authorization code (if applicable)
with this document. Space is provided below for recording up to 4 board numbers and their PCI bus-slot
locations. The board serial number and board type (500 or 505) is located on the solder-side of the board.
Board Identity on “Solder-Side” of the Board
Board Type
(e.g. /500, /505) Serial Number PCI Bus-Slot Location
Board 1
Board 2
Board 3
Board 4
The host PC can support up to four Boards.
DaqView/500 Authorization Code ____________________________
Customers who ordered DaqView/500 can find their authorization code on the authorization
code sheet located inside the sleeve of the install CD.
Customers who did not order DaqView/500 can run a 30-day free trial version, as discussed
elsewhere in the User’s Manual.
CAUTION
Take ESD precautions (packaging, proper handling, grounded wrist strap, etc.)
Use care to avoid touching board surfaces and onboard components. Only handle boards
by their edges (or ORBs, if applicable). Ensure boards do not come into contact with
foreign elements such as oils, water, and industrial particulate.
© 2004, 2005 by IOtech, Inc. 947994 1138-0940, rev 1.1 IG-1

Reference Notes:
Each DaqBoard/500 Series plugs into a PCI bus-slot. Consult your PC owner’s manual as needed.
Reference Note: Adobe PDF versions of user manuals will
automatically install onto your hard drive as a part of
product support. The default location is in the Programs
group, which can be accessed from the Windows Desktop.
Refer to the PDF documentation for details regarding both
hardware and software. Note that hardcopy versions of the
manuals can be ordered from the factory.
Minimum System Requirements
•PC system with Pentium®3 Processor
•500 MHz
•128 M-byte RAM
•Windows 2000 or XP Operating System
Installation, A Pictorial Overview
Step 1 –Install Software
IMPORTANT: Software must be installed before installing hardware.
1. Remove previous version Daq drivers, if present.
You can do this through Microsoft’s Add/Remove Programs feature.
2. Place the Data Acquisition CD into the CD-ROM drive. Wait for PC to auto-run the CD. This may
take a few moments, depending on your PC. If the CD does not auto-run, use the Desktop’s
Start/Run/Browse feature and run the Setup.exe file.
3. After the intro-screen appears, follow the screen prompts.
Upon completing the software installation, continue with step 2, Install Boards in available
PCI Bus-slots.
IG-2 DaqBoard/500 Series Installation Guide 947994 1138-0940, rev 1.1

Step 2 – Install Boards in available PCI Bus-slots
IMPORTANT:Software must be installed before installing hardware.
CAUTION
Turn off power to, and UNPLUG the host PC and externally connected equipment prior to
removing the PC’s cover and installing the DaqBoard. Electric shock or damage to equipment
can result even under low-voltage conditions.
Take ESD precautions (packaging, proper handling, grounded wrist strap, etc.)
Use care to avoid touching board surfaces and onboard components. Only handle boards by their
edges (or ORBs, if applicable). Ensure boards do not come into contact with foreign elements such
as oils, water, and industrial particulate.
IMPORTANT: Bus Mastering DMA must be Enabled.
For a DaqBoard/500 Series board to operate properly, Bus Mastering DMA must be Enabled on
the PCI slot [for which the board is to be installed]. Prior to installation, verify that your
computer is capable of performing Bus Mastering DMA for the applicable PCI slot. Note that
some computers have BIOS settings that enable [or disable] Bus Mastering DMA. If your
computer has this BIOS option, ensure that Bus Mastering DMA is Enabled on the appropriate
PCI slot.
Refer to your PC Owner's Manual for additional information regarding your PC and enabling
Bus Mastering DMA for PCI slots.
1. Turn off power to, and UNPLUG the host PC and externally connected equipment.
2. Remove the PC’s cover. Refer to your PC Owner’s Manual as needed.
3. Choose an available PCI bus-slot.
4. Carefully remove the DaqBoard from its anti-static protective bag. If you have not already done so,
write down the serial number of your board at this time.
5. Refer to the figure at the right. Remove the screw that
secures the blank adapter plate, which is associated with the
PCI slot you will be using. Refer to your PC Owner’s
Manual if needed.
6. Remove the blank adapter plate.
Removing a Blank Adapter Plate
1138-0940, rev 1.1 947994 DaqBoard/500 Series Installation Guide IG-3

7. Refer to the figure at the right. Align the groove in the
DaqBoard’s PCI edge-connector with the ridge of the
desired PCI slot, and with the PC’s corresponding rear-
panel slot.
8. Push the board firmly into the PCI slot. The board will
snap into position.
9. Secure the board by inserting the rear-panel adapter-plate
screw.
10. Using the previous steps, install additional boards into
available PCI bus-slots, if applicable to your application.
11. Replace the computer’s cover.
12. Plug in all cords and cables that were removed in step 1.
13. Apply power to, and start up the PC.
Note: At this point some PCs may prompt you to insert an
installation disk. While this is rare, if you do receive such a
prompt simply place the install CD-ROM into the disk drive
and follow additional screen prompts.
Installing a DaqBoard/500 Series Board
IG-4 DaqBoard/500 Series Installation Guide 947994 1138-0940, rev 1.1

Step 3 –Configure Boards
DaqBoard/500 Series Boards have no jumpers or switches to set. Configuration is performed entirely
through software. Refer to the following figure and steps to complete the configuration. The numbers in
the figure correspond to the numbered steps.
1. Open the “Start” menu from the Windows desktop.
2. Select “Settings.”
3. Select “Control Panel.”
4. Double-click “Daq Configuration.” This opens the Daq Configuration window.
5. Double-click on the Device Inventory’s DaqBoard/500 Series icon. In the figure above the
DaqBoard/500 appears as “DaqBoard500_0.”
The DaqBoard’s Properties tab will appear (following figure).
Note: If the DaqBoard icon is not present, skip to the upcoming section, Using ‘Add Device.’
Accessing the DaqBoard/500 Properties Tab
6. Enter a “Device Name” in the text box, or use the default, e.g., DaqBoard500_0.
The Name is for identifying the specific DaqBoard, but actually refers to the PCI slot.
7. Verify that the “Device Type” shows the correct board, i.e., “DaqBoard/500 or
DaqBoard/505.” Other devices, if available can be viewed via the pull-down list.
8. Confirm that the DaqBoard’s text box shows a Bus #, Slot #, and Serial Number.
If this text box is empty, use its pull-down list and select the serial number that matches the
one for your board.
1138-0940, rev 1.1 947994 DaqBoard/500 Series Installation Guide IG-5

Using “Add Device”
This method is for users who have accessed the Daq
Configuration control panel applet, but have no DaqBoard/500
Series device icon.
1. After accessing the Daq Configuration control panel applet,
click on the <Add Device> button (see figure, right). The
Select Device Type window will appear.
2. Using the Device Type’s pull-down list, select the
applicable board. In the example at the right
DaqBoard/500 is selected.
3. Click the <OK> button. The board’s Properties tab will
appear. The tab applies to all boards in the series.
At this point, complete steps 6 through 8 on page IG-5.
Using “Add Device”
Step 4 –Test Hardware
Use the following steps to test the DaqBoard. Note that these steps are continued from those listed under the
previous section, “Configure Board.”
1. Select the “Test Hardware” tab.
2. Click the <Resource Test> button.
3. After the test is complete, click <OK>.”
System capability is now tested for the DaqBoard and a list
of test results will appear.
Note: If you experience difficulties, please consult your user
documentation (included on your CD) before calling
for technical support.
Test Hardware Tab
(Condensed Screen Image)
At this point we are ready to connect signals. For DaqBoard/500 Series boards, connection is typically made via
a terminal board, such as the optional TB-100.
Reference Notes:
During software installation, Adobe®PDF versions of user manuals are automatically installed onto
your hard drive as a part of product support. The default location is in the Programs group, which can
be accessed from the Windows Desktop. A copy of the Adobe Acrobat Reader®is included on your
CD. The Reader provides a means of reading and printing the PDF documents. Note that hardcopy
versions of manuals can be ordered from the factory.
IG-6 DaqBoard/500 Series Installation Guide 947994 1138-0940, rev 1.1

Introduction 1
The DaqBoard/500 and DaqBoard/505 have 16 single-ended or 8 differential analog inputs multiplexed
to a 16-bit A/D converter with maximum throughput of 200 kHz, programmable gains of 1, 2, 4 or 8, one
counter input channel, two timer output channels, and 24 lines of digital I/O. In addition, DaqBoard/500
includes two clocked DACs.
The boards feature a DMA engine for optimum performance in supported Windows environments. Board
connections are terminated in a 68-pin “high density” SCSI III connector at the rear of the PC.
A digital calibration method is used for both analog-to-digital and digital-to-analog
conversions. Please contact the factory should you believe your board to be in need
of calibration.
Basic Information
Analog Inputs 16 Single-Ended or 8 Differential
Ranges Unipolar
0 to10V
0 to 5V
0 to 2.5V
0 to 1.25V
Bipolar
± 10V
± 5V
± 2.5V
± 1.25V
Resolution 16-bit
A/D Sample Rate 200 kHz
Gains (Programmable) x1, x2, x4, x8
D/A Outputs (16-Bit)*2 Clocked DACs (DaqBoard/500 only)
Digital I/O 24
Counters (16-Bit) 1
Timers 2
Associated Terminal Board TB-100 (optional)
Associated Cables CA-G55:
CA-G56:
CA-G56-6:
68 Pin SCSI III Cable, 3 ft.
68 Pin SCSI III Cable, Shielded, 3 ft.
68 Pin SCSI III Cable, Shielded, 6 ft.
*D/A Outputs do not apply to DaqBoard/505.
DaqBoard/500 Series 947294 Introduction 1-1

1-2 Introduction 947294 DaqBoard/500 Series User’s Manual
Block Diagram
DaqBoard/500 Series Block Diagram

DaqBoard/500 Series User’s Manual 947294 Daq Systems and Device Overviews 1-3
Board Features
Analog I/O
DaqBoard/500 Series boards support 16 single-ended or 8 differential analog inputs multiplexed to a 16-bit
A/D converter. The input multiplexer is supported by a 176 element channel gain RAM which allows the
board to select gain on a per channel basis and to access channels in any order. The 16-bit A/D has a
maximum throughput of 200 kHz. An A/D Pacer clock is provided to allow sampling rates from 0.0009 Hz
to 200 kHz. The DaqBoard/500 includes two DACs for analog output.*
Digital I/O
DaqBoard/500 Series boards have 24 lines of TTL level digital I/O programmable in three 8-bit ports as
either inputs or outputs. All 24 lines are brought out via the main 68-pin SCSI III connector.
Counter 1
Counter 1 (CNTR1) can provide either cumulative or incremental counting capabilities. The counter is
capable of counting 5 V LSTTL rising edges to a maximum count of 131071 decimal.
Timer 0 and Timer 1
Timer0 (TMR0) and Timer1 (TMR1) provide a 50% duty cycle square wave 5 V LSTTL output with an
output frequency range of 7.7 Hz to 500 kHz. The Timer’s output frequency is based on a 1 MHz
oscillation with a divisor of 1 to 65536 decimal.
PCI Interface
DaqBoard/500 Series boards communicate to the PCI bus through an interface controller. The boards are
fully plug-and-play and have no switches, potentiometers, or jumpers. The boards feature digitally
calibrated A/D and D/A’s, and plug-and-play compatibility to provide automatic integration into the PC’s
configuration when first installed.
The PCI interface provides access to all on-board registers for software configuration of all on-board
functions. For maximum performance, the boards feature a 32-bit bus-mastering DMA engine on the
ADC and DAC hardware to provide high-speed transfers between the board and system memory.
DMA Engine
Interrupt latency on the PCI bus can be extremely inefficient for high-speed data acquisition. For this
reason, DaqBoard/500 and DaqBoard/505 each use an onboard DMA engine. The engine [analogous to
the older ISA type DMA controller] supports scatter/gather (buffer chaining) with a pair of chain address
registers. These registers point to system memory for use in the buffered transfer.
The DMA controller is loaded with the previously allocated physical addresses of the buffers and only
generates interrupt requests when the current transfer buffer has been completed. This reduces the burden
of CPU interrupt intervention.
Both analog input and analog output channels* have on-board DMA engine support for high-speed data
transfers. The two analog output channels have individual DMA engines and clocking methods available.
The DAC1 clocking source may be set to the DAC0 clocking source to allow simultaneous DAC transfers.
All PCI bus transfers are 32-bit operations. Analog input and analog output transfers are each
independently software selectable to allow either 16-bit or 32-bit data transfers. An immediate
improvement of twice the memory bandwidth can be achieved by transferring two analog input data points
[or two analog output data points] into memory as a single 32-bit PCI transfer.
* The DAC analog output channels apply to DaqBoard/500 only.

1-4 Introduction 947294 DaqBoard/500 Series User’s Manual

Connections and Pinouts 2
Overview …… 2-1
68-Pin SCSI Type III Connector …… 2-2
Signal Definitions …… 2-3
TB-100 Terminal Connector Option …… 2-6
External Connections …… 2-7
WARNING
Always turn the computer power OFF and unplug it before connecting or discon-
necting a screw terminal panel or a cable to the PCI card. Failure to do so could
result in electric shock, or equipment damage.
CAUTION
The discharge of static electricity can damage some electronic components.
Semiconductor devices are especially susceptible to ESD damage. You should
always handle components carefully, and you should never touch connector pins or
circuit components unless you are following ESD guidelines in an appropriate ESD
controlled area. Such guidelines include the use of properly grounded mats and
wrist straps, ESD bags and cartons, and related procedures.
Overview
DaqBoard/500 Series boards communicate [external from the host PC] through a 68-pin SCSI III
connector. An optional TB-100 terminal board offers convenient screw-terminal connections for all
signal I/O.
Pinouts for both the DaqBoard/500 Series connector and the TB-100 follow.
The TB-100 option can be easily connected to a DaqBoard/500 or DaqBoard/505 via one of three
68-conductor cables. These are: CA-G55, a 3 ft. unshielded cable; CA-G56, a 3 ft. shielded cable;
and CA-G56-6, a 6 ft. shielded cable.
DaqBoard/500 Series User’s Manual 947994 Connections & Pinouts 2-1

68-Pin SCSI Type III Pinout
Standard 68-Pin SCSCI Type III, Socket (Female) Connector with Orb
Pin Signal Description /
Comments Pin Signal Description / Comments
1 DACLKIN/
CNTR1
See Pin 39 [Note 4]
External DAC Clock In or
Counter 1. Rising or Falling
Edge Sensitive.
35 DGND Digital Ground
2 ADCLKIN
See Pin 5 [Note 3] External ADC Clock In 36 DGND Digital Ground
3 ADTRGOUT/
TMR0 Internal ADC Trigger Output/
Timer 0 Clock Output 37 ADCLKOUT/
TMR1 Internal ADC Clock Output/
Timer 1 Clock Output
4 -- Reserved 38 DATRGIN DAC0 External Gate
(Level Controlled), or
External Tri
gg
er
(
Ed
g
e Active
)
.
5 ADCLKIN
See Pin 2 [Note 3] External ADC Clock In 39 DACLKIN/
CNTR1
See Pin 1 [Note 4]
External DAC Clock In, or
Counter 1. Rising or Falling
Edge Sensitive.
6 ADTRGIN ADC Trigger 40 DGND Digital Ground
7 C6 TTL Level Digital I/O Ch. C6 41 C7 TTL Level Digital I/O Ch. C7
8 C4 D TTL Level Digital I/O Ch. C4 42 C5 TTL Level Digital I/O Ch. C5 D
9 C2 I TTL Level Digital I/O Ch. C2 43 C3 TTL Level Digital I/O Ch. C3 I
10 C0 G TTL Level Digital I/O Ch. C0 44 C1 TTL Level Digital I/O Ch. C1 G
11 B6 I TTL Level Digital I/O Ch. B6 45 B7 TTL Level Digital I/O Ch. B7 I
12 B4 T TTL Level Digital I/O Ch. B4 46 B5 TTL Level Digital I/O Ch. B5 T
13 B2 A TTL Level Digital I/O Ch. B2 47 B3 TTL Level Digital I/O Ch. B3 A
14 B0 L TTL Level Digital I/O Ch. B0 48 B1 TTL Level Digital I/O Ch. B1 L
15 A6 TTL Level Digital I/O Ch. A6 49 A7 TTL Level Digital I/O Ch. A7
16 A4 I TTL Level Digital I/O Ch. A4 50 A5 TTL Level Digital I/O Ch. A5 I
17 A2 O TTL Level Digital I/O Ch. A2 51 A3 TTL Level Digital I/O Ch. A3 O
18 A0 TTL Level Digital I/O Ch. A0 52 A1 TTL Level Digital I/O Ch. A1
19 +5 VDC Power 53 DGND Digital Ground
20 ARET 1 [Note 1] Analog Return 1 54 ARET 0 [Note 2] Analog Return 0
21 AOUT 1 [Note 1] DAC1, Analog Out 1 55 AGND Analog Ground
22 AOUT 0 [Note 2] DAC0, Analog Out 0 56 AGND Analog Ground
23 AIN 15 Analog Input, Ch. 15 57 AIN 7 Analog Input, Ch. 7
24 AGND Analog Ground 58 AIN 14 Analog Input, Ch. 14
25 AIN 6 Analog Input, Ch. 6 59 AGND Analog Ground
26 AIN 13 Analog Input, Ch. 13 60 AIN 5 Analog Input, Ch. 5
27 AGND Analog Ground 61 AIN 12 Analog Input, Ch. 12
28 AIN 4 Analog Input, Ch. 4 62 SGND Signal Ground
29 AGND Analog Ground 63 AIN 11 Analog Input, Ch. 11
30 AIN 3 Analog Input, Ch. 3 64 AGND Analog Ground
31 AIN 10 Analog Input, Ch. 10 65 AIN 2 Analog Input, Ch. 2
32 AGND Analog Ground 66 AIN 9 Analog Input, Ch. 9
33 AIN 1 Analog Input, Ch. 1 67 AGND Analog Ground
34 AIN 8 Analog Input, Ch. 8 68 AIN 0 Analog Input, Ch. 0
2-2 Connections & Pinouts 947994 DaqBoard/500 Series User’s Manual

DaqBoard/500 Series User’s Manual 947994 Connections & Pinouts 2-3
Notes to this table appear on the following page.
SCSI III Pinout Notes (Apply to the preceding table.)
Note 1: AOUT 1 (DAC1) applies to DaqBoard/500 only. The clock source of the secondary DAC1 channel may
be software command, DAC1 Pacer clock, or Channel 0 clock source. Likewise, the return line (ARET 1)
only applies to the DaqBoard/500.
Note 2: AOUT 0 (DAC0) applies to DaqBoard/500 only. The clock source of the primary DAC0 channel may be
software command, DAC0 Pacer clock, or an external event (DACLKIN). Likewise, the return line
(ARET 0) only applies to the DaqBoard/500.
Note 3: Pins 2 and 5 (ADCLKIN) are redundant signal connections. Only one of these pins is to be used at time.
Note 4: Pins 1 and 39 (DACLKIN/CNTR1) are redundant signal connections. Only one of these pins is to be used
at time. Use must be for either External DAC Clock In or Counter 1.
Signal Definitions
The following is a description of each of the signals available at the 68-pin SCSCI Type III connector,
as indicated in the preceding pinout.
Analog Input Channels
These channel signals are over-voltage protected to 20 V above or below the ±15 V power supply. The channel
inputs can withstand input voltages of up to ±20 volts when the power to the system is off.
Channel Number Description
AIN 0
AIN 1
AIN 2
AIN 3
AIN 4
AIN 5
AIN 6
AIN 7
The positive half of the associated single-ended analog input channels.
AIN 0
AIN 2
AIN 4
AIN 6
AIN 8
AIN 10
AIN 12
AIN 14
These channels are either:
(a) the positive half of the associated differential analog input channel
pairs (AIN 0 through AIN 7), or
(b) single-ended analog input channels AIN 0,
AIN 2 … through AIN 14 even numbered channels.
AIN 1
AIN 3
AIN 5
AIN 7
AIN 9
AIN 11
AIN 13
AIN 15
These channels are either:
(a) the negative half of the associated differential analog input channel
pairs (AIN 0 through AIN 7), or
(b) single-ended analog input channels AIN 1, AIN 3 … through AIN 15
odd numbered channels.
Analog Outputs (applicable to DaqBoard/500 only)
AOUT 0, AOUT 1 - These signals are the voltage output signals from DAC0 and DAC1, respectively.
ARET 0, ARET 1 - These signals are the return lines for the voltage outputs. These inputs are essentially
tied to AGND (Analog Ground) on the board.
Digital I/O Lines (24 total)
A total of 24 digital I/O lines exist in three groups of eight. The groups are:
oA0 through A7
oB0 through B7
oC0 through C7
Each group of eight TTL level digital control lines (A, B, and C) is configurable as 8 bit input or output.

Clocks, Triggers, Counters, and Timers
ADCLKIN –Uses pin #2 or pin #5. ADCLKIN is the ADC External Pacer Clock Input. This input
recognizes TTL level signals and is edge sensitive. The active edge is selectable as either rising or falling.
The ADCLKIN signal connection can be made at either pin #2 or pin #5,
but NOT both at the same time.
ADCLKOUT/TMR1 – Uses pin #37 for one of the following two functions.
ADCLKOUT is the ADC’s External Clock Output. Each time the ADC is clocked from any of the
available clocking sources the ADCLKOUT signal pulses high for a period of 1micro-second. This output
can be used to synchronize multiple A/D converters on different PCI cards allowing simultaneous A/D
conversions by connecting the ADCLKOUT to the ADCLKIN input of each PCI card.
TMR1 is an LSTTL output signal that provides a second clock source with characteristics identical to
TIMER0. The connection makes use of a separate [and independent] TMR1 internal software pacer clock.
The ADCLKOUT signal line is shared with the on-board TMR1 Clock Output signal, pin #37
on the 68-pin SCSCI III connector. Only one output signal may be generated to the ADCLKOUT
/ TMR1 pin (or associated terminal) at any given time. TIMER 1 is automatically disabled in
hardware when the ADCLKOUT is enabled.
ADTRGIN – Uses pin #6. ADTRGIN is the External ADC Trigger/Gate Input. This input recognizes
TTL level signals and is used to start or stop the ADC acquisition process. The input is selectable as either
rising/falling edge or active high/low level sensitivity.
ADTRGOUT/TMR0 – Uses pin #3 for one of the following two functions.
ADTRGOUT is the internal ADC’s Trigger Output. Each time the ADC is triggered from any of the
available triggering sources the ADTRGOUT signal pulses high for a period of 1 µs. This output can be
used to synchronize multiple A/D converters on different cards allowing simultaneous A/D triggering by
connecting the ADTRGOUT to the ADTRGIN input of each PCI card.
The TMR0 LSTTL output signal provides a 50% duty cycle square wave derived from an independent
TMR0 internal software pacer clock. The pacer clock period can be set from 1 us to 65535 us, producing
an output clock rate from 500 KHz down to approximately 7.6295 Hz.
The ADTRGOUT signal line is shared with the on-board TIMER 0 Clock Output signal
(TMR0) pin #3 on the 68-pin SCSI III connector. Therefore only one output signal may be
generated to the ADTRGOUT / TMR0 terminal at any given time. The TIMER 0 is
automatically disabled in hardware when the ADTRGOUT is enabled.
2-4 Connections & Pinouts 947994 DaqBoard/500 Series User’s Manual