Ethernet-Based Data Acquisition System

OMB-DAQSCAN-2001, OMB-DAQSCAN-2002, OMB-DAQSCAN-2004 and OMB-DAQSCAN-2005

Ethernet-Based Data Acquisition System Compnents

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下单

Adds Analog I/O, Digital I/O and Frequency I/O to Ethernet-Based Test Systems
All I/O Can Be Synchronous, Enabling Precise Timing Between Various I/O Functions
8 Differential or 16 Single-Ended Inputs, Expandable up to 256 Voltage or 896 Thermocouple Channels Using Signal Conditioning and Expansion Options
Up to 40 Built-In TTL-Level Digital I/O, Expandable Up to 256 Channels of Isolated I/O Using Low-Cost Isolation Modules
Includes Support for Visual Basic, C/C++, ActiveX/COM, LabVIEW, MATLAB and DASYLab
Convenient 1U high 19" Rack-Mount Package Minimizes Rack Space in Test Systems
Includes Out-of-the-Box DaqView Software to Facilitate Signal and Wiring Verification with No Programming Required

USB, RS232, RS485和Ethernet数据采集系统 - 查看相关产品

产品描述

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