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the smart approach to instrumentation
TM
PC Data Acquisition Hardware
DaqBoards
TM
Plug-In Data Acquisition Boards for ISA Desktop PCs
Models /100A, /112A, /200A, & /216A
Features
C o m p l e t e I S A - b u s b a s e d d a t a
acquisition solutions
Plug into a desktop PC's ISA-bus slot
Analog input:
-
100-kHz A/D converter, 12 bit (100A
series) or 16 bit (200A series)
-
100 Kreadings/s sampling & real-
time storage-to-disk
-
8 differential or 16 single-ended
inputs, expandable to 256 channels
-
channel/gain sequencing at 10
s
intervals, including up to 256 ex-
pansion channels
-
512-location scan memory for user-
defined channel/gain sequencing of
up to 256 channels
-
x1, 2, 4, or 8 programmable gain
(other gains available with option
cards)
-
triggerable from analog, digital, or
software, including pre-trigger
Two 12-bit analog outputs with
500-kHz update rate per channel
Digital I/O:
-
24 general-purpose digital I/O lines,
expandable to 192
-
16 high-speed digital-input lines,
scannable at up to 100 kHz
Five programmable 16-bit counter/
timers
Signal Conditioning Options
Expansion cards & modules for high-
voltage/current, strain gages, ther-
mocouples, isolation, relays, acceler-
ometers, filtering, & simultaneous
sample & hold (see p. 112)
Software
(see p. 98)
DaqView
TM
, spreadsheet-style software
for Out-of-the-Box
TM
setup, acquisition,
& real-time display
DIAdem
-View, for post-acquisition
viewing of data files
Drivers for Visual Basic
& C++ for
Windows
3.x/95/98/NT; C & Pascal
for DOS; & DASYLab
, Snap-Master
TM
,
& LabVIEW
IOtech's
DaqBoards provide
cost-effective, high-
performance data
acquisition for up
to 256 mixed
signal inputs
The DaqBoard family of ISA-bus plug-in
boards provides the widest selection of
signal conditioning, signal expansion, and
software support of any available PC-based
data acquisition system. Every DaqBoard
model features an on-board 512-location
sequencer that lets you select any chan-
nel and gain combination and configure
each channel for unipolar/bipolar opera-
tion as your application requires. The
DaqBoards can scan channels at 10
s/channel, and repeat a sequence at in-
tervals from 0 seconds to nearly 12 hours.
Optional simultaneous sample and hold
cards enable the DaqBoards to sample up
to 256 channels at the same instant.
Unlike many PC-based data acquisition
products, our DaqBoards meet their scan-
ning and timing specifications even
when connected to a full complement
of signal conditioning and expansion
boards or modules. The DaqBoards mea-
sure signals from expansion channels--
including per-channel gain switching--
at their 10
s/channel maximum rate. This
enables a DaqBoard system to scan different
types of transducers, from thermocouples
to strain gages, within the same scan group
without software intervention.
The DaqBoards support three data trans-
fer modes--DMA, interrupt-driven, and
REP INSW--permitting continuous real-
time data collection at 100 Kreadings/s.
The DaqBoards' broad-ranging software
support offers you the solution that best
suits your application. Specifically, the
DaqBoards include three categories of soft-
ware support: graphical Windows
set up
and acquisition programs; programming
language drivers and custom controls;
and drivers for icon-driven, Windows
-
based software packages. In contrast, many
vendors charge extra for language and
third-party software drivers.
For fill-in-the-blank-style applications that
require no programming, we include two
Windows
programs along with each
DaqBoard: DaqView, a setup and data
acquisition package, and DIAdem-View, a
post-acquisition waveform-display package.
UPDATED: 3/29/01
93
Q U I C K F I N D
the smart approach to instrumentation
TM
PC Data Acquisition Hardware
tel: 440-439-4091
fax: 440-439-4093
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www.iotech.com
DaqBoards
TM
General Information
DaqView software (see p. 107) lets you
select desired channels, gains, transducer
types (including thermocouples), and a
host of other parameters with a click of
your PC's mouse. It also lets you stream
data to disk and lets you display data in
either numerical or graphical formats.
DIAdem
-View, our post-acquisition
waveform-viewing package, permits the
simultaneous viewing of up to 16
channels of acquired data (see p. 198).
The DaqBoards and their expansion and
signal conditioning options are also sup-
ported by icon-based software packages that
are virtually unmatched by any other data
acquisition board in their class. Currently,
the DaqBoards are supported by DASYLab
(see p. 194), and LabVIEW
for Windows
.
Channel-Scanning Flexibility
The DaqBoards offer a 512-location scan
sequencer that allows you to select each
channel and associated input amplifier gain
at random. The sequencer circuitry circum-
vents a major limitation encountered with
many plug-in data acquisition boards--a
drastic reduction in the scan rate for exter-
nal expansion channels. All DaqBoard chan-
nels are scanned, including the 256 poten-
tial expansion channels, at 100 kHz
(10
s/channel). DaqBoards use the same
scanning technique as the DaqBooks. For
more complete information, see p. 73 in the
DaqBook section.
Flexible Triggering
The DaqBoards offer both analog and
digital triggering capabilities. For example,
the units permit you to trigger on the
analog input level from any one channel,
and also allow you to program the slope
and polarity of the trigger level. Also,
because the DaqBoards feature a hard-
ware-based trigger, they minimize trigger
latency to less than 10
s. In contrast,
plug-in boards that employ software-poll-
ing triggers have typical trigger-to-A/D
conversion latencies of 100
s or more.
The DaqBoards can also be triggered from
a TTL-level digital input or from a com-
mand from the PC. Pre-trigger* data up to
32 Ksamples can be collected using any
analog channel as the triggering event.
Analog Input
The DaqBoards' built-in analog input ca-
pability permits them to measure 8 chan-
nels in a differential input mode, or 16
channels in a single-ended mode. Single-
ended or differential mode is software
selected by a command from the PC.
Their on-board programmable gain in-
strumentation amplifiers can be sequencer
selected to x1, 2, 4, or 8 on a per-channel
basis. Unipolar/bipolar operation has the
same flexibility. Other gains can be ob-
tained via expansion cards. The DaqBoard
A/D converter scans selected channels at a
constant 10
s/channel rate, minimizing
the time skew between consecutive chan-
nels. The time between the start of each
scan sequence can be programmed to re-
peat immediately upon completion of the
scan group or at intervals of up to 12 hours.
Our DBK expansion cards (see p. 112) per-
mit the DaqBoard to be expanded up to 256
channels while maintaining its 10
s per
channel scan rate. For applications that
require simultaneous sampling of multiple
channels, use DBK17
TM
(see p. 134), or
DBK45
TM
(see p. 158).
Analog Output
The DaqBoards have two 12-bit D/A con-
verters that allow you to generate volt-
ages or waveforms of 0 to +5V. In addi-
tion, with a bipolar external reference,
output voltages between -10 VDC and
+10 VDC may be obtained. One D/A con-
verter is internally wired to the analog
trigger comparator, and can be software
programmed to act as either the trigger-
level setting or the second analog output
channel. Waveforms up to 2 Ksamples
deep per channel can be loaded into the
boards' built-in FIFO via DMA and can be
output at up to 500 kHz per D/A con-
verter. The D/A converter's clock may be
selected using the on-board time base,
which supplies four frequencies (10 MHz,
5 MHz, 1 MHz, or 100 kHz). The boards
can also use an externally supplied clock
via the P1 or P3 port.
* Pre-trigger is a software function, and dependent on PC performance
High-Speed Digital Input
The DaqBoard/100A
TM
and /200A have the
ability to scan 16 TTL-level digital inputs
as part of the user-defined scan sequence.
Thus, the boards can acquire the state of
all 16 high-speed digital input lines within
an analog scan sequence. The DaqBoards
transfer the acquired digital word to the
PC within the same data stream as the
acquired analog data, eliminating the need
for special data handling by the software.
General-Purpose Digital I/O
The DaqBoard/100A and /200A also in-
clude 24 general-purpose digital I/O
lines, programmable in 8-bit groups as
either inputs or outputs. Digital I/O ca-
pacity can be expanded up to 192 lines
with the addition of optional expansion
cards. The digital I/O lines can not be
accessed by the PC while the DaqBoards
are transferring data from the A/D con-
verter via DMA or interrupts. If an appli-
cation requires digital inputs with criti-
cal timing, the boards' 16 high-speed
digital inputs should be used.
Frequency/Pulse Input
The DaqBoard/100A and /200A provide
five 16-bit counter/timers that can be
programmed for a wide variety of func-
tions. For frequency measuring applica-
tions, each channel can count frequency
inputs up to 7 MHz, with programmable
gate time from 1
s to 655 seconds. If
expansion beyond the 16-bit capacity of a
single channel is required, the boards
permit channels to be cascaded via soft-
ware. Also, each channel can be config-
ured for pulse-counting or totalizing ap-
plications--wherein the number of re-
ceived pulses is accumulated, permitting
pulse accumulation concurrent with the
measurement of analog input channels.
The boards also permit the width of a
digital input pulse to be measured on
each channel, with resolution to 1
s.
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the smart approach to instrumentation
TM
PC Data Acquisition Hardware
DaqBoards
TM
General Information
DaqBoard Block Diagram (Models /100A, /112A, /200A, & /216A)
5
counter/timer
channels
16
high-speed
digital inputs
Sample
and hold
amplifier
12- or 16-bit,
100 kHz analog
to digital converter
15
16
100-kHz
clock
Programmable
sequencer
timebase,
10
s to 12 hours
P1
ANALOG I/O
(DAS-16
compatible)
P2*
DIGITAL I/O
(PIO-12
compatible)
P3*
PULSE/
FREQUENCY/
HIGH-SPEED
DIGITAL I/O
(CTM-05
compatible)
Gain select
per channel
Unipolar/
bipolar
Models /100A, and /200A; optional CA-60 cable required
for externally accessible DB37 connection
24-bit
general-purpose
digital I/O lines
Control external
muxes
Sequencer
reset
SE/DE
selection
24
Pro-
grammable
gain amplifier
1, 2, 4, 8
8 DE/16 SE
analog input
multiplexer
2
2
4
4
512-step
unipolar/bipolar
random access
channel/gain
sequencer
4 digital outputs
for high-speed
channel expansion
or
4 general-purpose
digital outputs
16
SIGNAL
I/O
Analog
trigger-in
comparator
Trigger
select
4 general-purpose
digital inputs
or
1 auxiliary counter gate
1 TTL trigger input
2 gain-select outputs
for expansion boards
Two
12-bit
digital to
analog
converters
PC (ISA)
bus
interface
4 Kword
FIFO data
buffer
*
DMA and
interrupt
interface
16-bit
data and
address
bus
PC (ISA) Bus
Optional adapter cable
required for external access
to P2 and P3 ports*
4 Kword
FIFO data
buffer
PC +5V
Power
supply
Power input
+15
15
DC/DC
converter
Pulse/Frequency Output
In pulse/frequency output modes, the
DaqBoard/100A's and /200A's five
counter/timer channels can each be inde-
pendently programmed to perform one
of several functions. In the pulse-genera-
tion mode, a single pulse of program-
mable width can be generated from DC to
500 kHz. In the frequency-generation
mode, the DaqBoards can generate a
square wave of duty cycle from 0.0005%
to 99%, with frequencies up to 1 MHz. An
external time base can also be input to
achieve other frequency outputs. Each of
the DaqBoards' counter/timer channels
have a one-shot output mode that can
generate a pulse output in response to a
hardware or software trigger input. The
pulse begins at a programmable delay
from 1
s to 655 seconds after receipt of
the trigger.
Plug-in Board Compatibility
The DaqBoards emulate popular data
acquisition plug-in boards from
Keithley/MetraByte, Omega, Computer
Boards, and Advantech. For example, the
DaqBoards' P1 analog I/O port is equipped
with a DB37 connector that is compatible
with that on Keithley/MetraByte's
DAS-16. Similarly, the optional CA-60
adapter cable makes the DaqBoards' P2
digital I/O port compatible with that on
Keithley/MetraByte's PIO-12 board and
the DaqBoards' P3 counter/timer port
compatible with that on their CTM-05
board. (The DaqBoards' P2 and P3 hard-
ware is also register compatible with the
PIO-12 and CTM-05 hardware.) This
means that the DaqBoards can be used
with options and cabling developed for
these other boards.
The DaqBoards are available in four differ-
ent 12- and 16-bit configurations, with vary-
ing I/O capabilities. All DaqBoards can be
used with DBK series signal conditioning
and expansion products (see p. 112). Com-
plete DaqBoard Series and DaqBoard Signal
Conditioning & Expansion Options selec-
tion guides follow (see p. 95), as do ex-
amples of system configurations.
In the typical system shown above, three
DBK analog cards are daisy chained in a
DBK10
TM
chassis and attached to the
DaqBoard's P1 analog I/O connector. The
DBK11A
TM
provides screw-terminal access
to the DaqBoard's on-board analog input
and output channels; the DBK15
TM
card
provides 16 channels of current or voltage
input; and the DBK17
TM
provides four chan-
nels of simultaneous sampling. The cards
are housed in the DBK10 expansion enclo-
sure (shown with cover removed). The
ribbon cables are CA-131-1T and CA-37-2.
95
Q U I C K F I N D
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TM
PC Data Acquisition Hardware
tel: 440-439-4091
fax: 440-439-4093
sales@iotech.com
www.iotech.com
DaqBoards
TM
Selection Guide & System Examples
Analog Input
A/D resolution
12 bit
12 bit
16 bit
16 bit
No. of analog input channels
8 DE, 16 SE
8 DE, 16 SE
8 DE, 16 SE
8 DE, 16 SE
Maximum channel capacity
256
256
256
256
A/D speed
100 kHz
100 kHz
100 kHz
100 kHz
Unipolar/bipolar selection
sequencer
sequencer
sequencer
sequencer
Single/differential selection
software
software
software
software
Channel/gain sequencer depth
512
512
512
512
Analog output
Maximum update rate
500 kHz
500 kHz
500 kHz
500 kHz
No. of output channels
2
2
2
2
D/A resolution
12 bit
12 bit
12 bit
12 bit
High-speed digital inputs
No. of bits
16
16
Maximum scan rate
100 Kwords/s
100 Kwords/s
Programmable digital I/O
No. of programmable I/O lines
24
24
Maximum channel capacity
192
192
Fixed digital I/O
4 in, 4 out*
4 in, 4 out*
4 in, 4 out*
4 in, 4 out*
Programmable counter/timers
No. of channels
5
5
Maximum frequency input
7 MHz
7 MHz
Other counter inputs
1 ch, 8 MHz*
1 ch, 8 MHz*
1 ch, 8 MHz*
1 ch, 8 MHz*
Bus interface
ISA
ISA
ISA
ISA
Software
DOS & Windows drivers
DaqView software
DIAdem software
DASYLab compatible
Snap-Master compatible
LabVIEW
compatible
Visual Basic
Form factor
Size
114 mm X 333 mm
114 mm X 333 mm
114 mm X 333 mm
114 mm X 333 mm
Size
4-1/2" x 13-1/8"
4-1/2" x 13-1/8"
4-1/2" x 13-1/8"
4-1/2" x 13-1/8"
*
Accessible only if no analog expansion cards are in use
DaqBoard/100A
DaqBoard Series Selection Guide
Model
DaqBoard/112A
DaqBoard/200A
DaqBoard/216A
DBK1
16-connector BNC interface module
16 connectors
117
DBK2
D/A voltage-output card
4 channels
118
DBK4
dynamic signal input card
2 channels
119
DBK5
current-output card
4 channels
121
DBK7
frequency input card
4 channels
123
DBK8
high-voltage input card
8 channels
125
DBK9
RTD measurement card
8 channels
126
DBK10
expansion-card enclosure
3 cards
127
DBK11A
screw-terminal card
40 terminals
128
DBK12
programmable low-gain analog input card
16 channels
129
DBK13
programmable high-gain analog input card
16 channels
129
DBK15
universal current/voltage input card
16 channels
130
DBK16
strain gage expansion card
2 channels
132
DBK17
simultaneous sample and hold card
4 channels
134
DBK18
low-pass filter card
4 channels
136
DBK19
high-accuracy thermocouple card
14 channels
138
DBK20
general-purpose digital I/O card (screw terminals)
48 channels
140
DBK21
general-purpose digital I/O card (male DB37 connectors)
48 channels
140
DBK23
optically isolated digital-input module
24 channels
141
DBK24
optically isolated digital-output module
24 channels
143
DBK25
relay output card
8 channels
145
DBK32A
auxiliary power supply
15 VDC @ 500 mA
147
DBK33
triple-output auxiliary power supply
15 VDC @ 250 mA &
147
5 VDC @ 1000 mA
DBK40
18-connector BNC interface
18 connectors
149
DBK41
analog expansion enclosure
10 cards
150
DBK42
multi-purpose isolated signal-conditioning module
16 channels
152
DBK43A
strain gage module
8 channels
154
DBK44
mutli-purpose isolated signal-conditioning card
2 channels
156
DBK45
simultaneous sample and hold card with low-pass filter
4 channels
158
DBK50
isolated high-voltage input module
8 channels
160
DBK51
isolated low-voltage input module
8 channels
160
DBK52
high-accuracy thermocouple module
14 channels
162
DBK53
programmable low-gain analog input module
16 channels
163
DBK54
programmable high-gain analog input module
16 channels
163
DBK60
3-slot expansion module w/customizable panels
3 cards
164
Product
Description
Capacity
DaqBoard Signal Conditioning & Expansion Options
Page
Access to the DaqBoard analog, digital and
counter port is easy. Here, the P1 analog I/O
connector is attached to a DBK15 16-chan-
nel current/voltage multiplexing card. The
P2 digital I/O port and the P3 frequency I/O
port are each connected to DBK11A screw-
terminal cards. The cards are housed in the
DBK10 three-slot expansion enclosure
(shown with cover removed) and each is
connected to the PC via a CA-131-1T cable.
Two optional CA-60 cables installed within
the PC bring P2 and P3 signals from the
DaqBoard to the PC's rear panel.
For large systems, the DBK41
TM
ten-slot ex-
pansion module attaches to the DaqBoard
P1 analog I/O connector to accommodate
any combination of analog DBK signal con-
ditioning and expansion cards. The cards
simply plug into the backplane of the
DBK41; the unit, which is shown with the
cover removed, accommodates up to 10
analog cards. A CA-131-1T ribbon cable
attaches the DBK41 module to the DaqBoard
P1 analog I/O connector.
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the smart approach to instrumentation
TM
PC Data Acquisition Hardware
The DaqBoard attaches easily to the
DBK60
TM
expansion module which pro-
vides three slots for signal conditioning
cards and a choice of termination panels.
The DaqBoards can be easily expanded
beyond their built-in channel capacity
via our wide ranging DBK series of ex-
pansion, signal conditioning, and power
supply options.
Analog Input Expansion
All DBK series analog expansion cards are
designed to daisy-chain to the P1 analog
connector found on all DaqBoards.
Because the DaqBoards feature an on-
board channel/gain sequencer, they can
directly address up to 256 channels,
enabling the scanning of all expansion
channels at the same 10
s rate as on-
board channels.
When equipped with analog input ex-
pansion cards, the DaqBoards are con-
figured for 16 single-ended inputs. Each
16-channel expansion card consumes
one of the DaqBoards' on-board analog
channels; consequently, a maximum of
sixteen 16-channel cards can be accommo-
dated, for a total of 256 channels. DBK series
cards with only two or four channels can
share the same DaqBoard base channel to
maintain the 256 channel maximum.
When analog expansion cards are in use,
unused DaqBoard base channels are
available to measure input signals.
DaqBoards
TM
Expansion
DaqBoard System Example
Analog Input Card Housing
The DBK analog input expansion cards
can be housed in a variety of ways. Your
choice will depend on the number of
cards required by your system.
If your application requires six or fewer
cards, the slim 3-slot DBK10 expansion
card enclosure is a good choice. The
DBK10 requires a CA-37-1T cable for
daisy chaining the analog expansion
cards. The DBK10 enclosures can easily
be stacked together.
If your application requires more than six
expansion cards, or if you want to allow
for future system expansion, the compact
10-slot DBK41 analog expansion card
enclosure is the preferred solution.
The DaqBoard/216A and DBK60 expansion chassis with three user-selected
signal conditioning cards and termination panels (see p. 164).
DBK60 enclosure
with three DBK cards
installed
DBK60 enclosure
with three DBK cards
installed
Front
Back
CA-131-1T
CA-131-1T
P1
Desktop PC
with
DaqBoard/216A
installed
Desktop PC
with
DaqBoard/216A
installed
I/O
PDF 
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