Ethernet-Based Data Acquisition System |
| OMB-DAQSCAN-2001, OMB-DAQSCAN-2002, OMB-DAQSCAN-2004 and OMB-DAQSCAN-2005 |
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Ethernet-Based Data Acquisition System Compnents
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Adds Analog I/O, Digital I/O and Frequency I/O to Ethernet-Based Test Systems
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All I/O Can Be Synchronous, Enabling Precise Timing Between Various I/O Functions
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8 Differential or 16 Single-Ended Inputs, Expandable up to 256 Voltage or 896 Thermocouple Channels Using Signal Conditioning and Expansion Options
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Up to 40 Built-In TTL-Level Digital I/O, Expandable Up to 256 Channels of Isolated I/O Using Low-Cost Isolation Modules
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Includes Support for Visual Basic, C/C++, ActiveX/COM, LabVIEW, MATLAB and DASYLab
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Convenient 1U high 19" Rack-Mount Package Minimizes Rack Space in Test Systems
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Includes Out-of-the-Box DaqView Software to Facilitate Signal and Wiring Verification with No Programming Required
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View related products - USB, RS232, RS485 and Ethernet Data Acquisition Systems
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The OMB-DAQSCAN-2000 Series
of Ethernet-based data acquisition
system components provides
analog, digital and frequency I/O
capability for Ethernet-based test
systems. All OMB-DAQSCAN-2000 models
are packaged in a 1U high-full rack
package and include a rack-mount
kit that can attach to either the front
or the rear of the enclosure. Multiple
OMB-DAQSCAN models can be
combined in the same system and
synchronized using a simple SYNC
connection between units. All I/O i
s accessed via female DB37
connectors located at the rear of
the unit, making cabling easy from
the OMB-DAQSCAN-2000 to your
device-under-test.
Four models in the
OMB-DAQSCAN-2000 Series
are available, ranging from the
OMB-DAQSCAN-2002 which offers
digital/frequency I/O, to the full-featured
OMB-DAQSCAN-2001,
which includes 16 analog inputs,
4 analog outputs, 40 digital I/O,
4 frequency inputs and 2 timer
outputs.
The OMB-DAQSCAN-2000 Series
includes comprehensive drivers for
all popular Windows-based
environments, including Visual
Basic, C/C++, ActiveX/COM,
LabVIEW, MATLAB, and DASYLab.
Also included with the
OMB-DAQSCAN-2000 Series
is DaqView, an interactive
spreadsheet-style application that
is ideal for verifying signal
connections during system design.
The compact 1U high 19” rack
packaging of the OMB-DAQSCAN-2000
make it a compact component
for rack-based systems. In addition
to the built-in I/O provided by the
OMB-DAQSCAN-2000 Series, a
wide variety of signal conditioning
and expansion options are
available.
Below are some sample systems
that can be derived from the
OMB-DAQSCAN-2000 along
with OMB-DBK options.
High Channel Count
Thermocouple Measurements
When combined with the OMB-DBK90 thermocouple
input module, the OMB-DAQSCAN-2000 Series can
measure up to 896 channels of T/C input. In the
example system to the right, any T/C type can be
installed into any channel using standard mini T/C
connectors. Each 56-channel OMB-DBK90 option
consumes 2U of rack space and can be mounted
on the front or rear of the rack chassis. Built-in cold
junction compensation coupled with T/C conversion
algorithms built into the software make temperature
measurements easy. Thermocouples are measured
at 1 ms/channel in a system based on the
OMB-DBK90.
High-Isolation Voltage
and Thermocouple Measurements
The OMB-DAQSCAN can be combined with the
OMB-DBK207/CJC options to create an isolated
system capable of measuring up to 256 channels
of voltage, thermocouple, RTD and strain gage
inputs. All input channels can be scanned up to
200 kHz and are isolated by 500 V from other
channels and from system common. Any
combination of input signals is possible by
selecting the appropriate OM5 signal conditioning
module for the OMB-DBK207/CJC.
OMB-DBK207/CJCs can be mounted at the
front or rear of the rack. They attach to the
OMB-DAQSCAN via a simple OMB-CA-37-10 cable.
Isolated Digital I/O System
When the OMB-DAQSCAN-2002 is
combined with the OMB-DBK208 options,
up to 256 channels of isolated digital I/O
are possible, capable of controlling AC
or DC voltages up to 250 V or sensing
the presence of AC or DC voltages.
All channels are isolated from one another
and from the system by up to 500 V. Inputs
can be scanned in 16-bit increments at
speeds up to 200 Kreadings/s.
The OMB-DBK208 can be mounted
at the front or rear of the rack.
High-Speed Voltage
Measurement System
The OMB-DAQSCAN-2005 can be
combined with OMB-DBK85 16-channel
voltage input modules to build a 5
µs/channel voltage measurement system
with up to 256 channels. All inputs can
have a different software programmable
input range, from 156 mV FS to 10 V FS,
programmable on a per-channel basis.
The 16 BNC inputs on the OMB-DBK85
can be accessed from either the front or
the rear of a rack system.
Multifunction I/O System
All of the foregoing capabilities can be
combined into a single system using
one OMB-DAQSCAN-2001 as the
system centerpiece.
Specifications
GENERAL
Supply Voltage Range: 90 to 250 Vac
Power Required: 15 W (assuming no
OMB-DBK options)
Operating Temperature: 0 to 50°C (32 to 122°F)
Storage Temperature: -40 to 80°C (-40 to 176°F)
Relative Humidity: 0 to 95%, non-condensing
Signal I/O Connector: DB37 male for P1, P2 and P3
Dimensions: 425 W x 220 D x 45 mm H
(16.75 x 8.5 x 1.75")
Weight: 2.3 kg (5 lbs)
Power Available for External DBK Options: 10W
A/D SPECIFICATIONS
Type: Successive approximation
Resolution: 16-bit
Conversion Time: 5 µs
Maximum Sample Rate: 200 kHz
Non-linearity (Integral): ±1 LSB
Non-linearity (Differential): No missing codes
ANALOG INPUTS
Channels
OMB-DAQSCAN-2001, OMB-DAQSCAN-2005:
16 single-ended or 8 differential, programmable on a
per-channel basis as single-ended or differential and
unipolar or bipolar
Expansion: Up to 896 TC channels when used with
OMB-DBK90 expansion option (1 ms/channel), or up
to 256 channels when used with all other expansion
options (5 µs/channel)
Settling Time: 5 µsec to 1 LSB for full-scale step
Temperature Coefficient: ±(10 ppm +0.3 LSB)/°C
outside the range of 0 to 35°C
Input Impedance: 10 MΩ (single-ended), 20M Ω (differential)
Bias Current: <1nA (0 to 35°C)
Common Mode Rejection: 86 dB, DC to 60 Hz for
gains < = 8; >100 dB for gains > = 16
Maximum Input Voltage (Without Damage):
±11 V relative to analog common
Over-Voltage Protection: ±35 V
Ranges: Software or sequencer-selectable
on a per-channel basis
Crosstalk: -100 dB DC to 60 Hz; 86 dB @ 10 kHz
INPUT SEQUENCER
Analog, digital and frequency inputs can be scanned
synchronously, based on either an internal
programmable timer or an external clock source.
Scan Clock Sources: 2
1. Internal, programmable from 5 µs to 5.96 hours
in 1 µs steps
2. External, TTL level input up to 200 kHz max:
Programmable parameters per scan: Channel (random
order), gain, unipolar/bipolar
Depth: 16,384 locations
On-Board Channel-to-Channel Scan Rate: 5 or 10 µs
per channel, programmable
Expansion Channel Scan Rate: 5 µs, 10 µs, or 1000
µsec per channel, programmable
External Acquisition Scan Clock Input
Maximum Rate: 200 kHz
Clock Signal Range: 0 V to 5 V
Minimum Pulse Width: 50 ns high, 50 ns low
External SYNC Port: Available on
rear panel, allows multiple DaqScan units to be
scan-synchronous (post trigger)
ANALOG OUTPUT (MODELS OMB-DAQSCAN-2001
AND OMB-DAQSCAN-2004)
The four analog output channels are updated synchronously relative
to scanned inputs, and clocked from either an internal onboard clock or
an external clock source. Analog outputs can also be updated
asynchronously, independent of any other scanning in the system.
Channels: 4
Resolution: 16-bits
Data Buffer: 256 Ksample
Output Voltage Range: ±10 V
Output Current: ±10 mA
Offset Error: ±0.0045 V max
Digital Feedthrough: 50 mV when updated
Gain Error: ±0.01%
Update Rate: 100 kHz max,
1.5 Hz min (no minimum with external clock)
Settling Time: 10 µsec max to 1
LSB for full-scale step
Clock Sources: 4, programmable
1. Onboard D/A clock, independent
of scanning input clock
2. Onboard scanning input clock
3. External D/A input clock, independent of external scanning
input clock
4. External scanning input clock
DIGITAL I/O
Channels: 40, expandable up to
272 with external digital OMB-DBK options
Input Scanning Modes: 2
1. Asynchronous, under program control at any time relative to input
scanning
2. Synchronous with input scanning
Ports: 3x 8-bit (82C55 emulation), and 1x 16-bit; each port is
programmable as input or output
Input Protection: ±8 KV ESD clamp diodes parallel
I/O Levels: TTL
Sampling Rate: 200 kHz max
Update Rate: Asynchronous under program control
FREQUENCY/PULSE COUNTERS
Counter inputs can be scanned synchronously along with analog
and digital scanned inputs, based either on internal
programmable timer or an external clock source. Counters can be
configured to clear when read or to totalize and clear under program
control.
Channels: 4x 16-bit; cascadable as 2x 32-bit
Frequency Measurement Rate: 10 MHz max
Input Signal Range: -15 V to 15 V
Trigger Level: TTL
Minimum Pulse Width: 50 ns high, 50 ns low
Channels: 4x 16-bit; cascadable as 2x 32-bit
Frequency Measurement Rate: 10 MHz max
Input Signal Range: -15 V to 15 V
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† Price are shown in RMB.
Note: All OMB-DAQSCAN-2000 models include 10/100 BaseT Ethernet interface, Daqview Software, drivers for LabVIEW, DASYLab, C++, Visual Basic and ActiveX/COM; DB37 connectors, external SYNC, complete operator’s manual on CD ROM and rack-mount kit also included.
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