Industrial Data Acquisition DI-788
DATAQ Instruments announces model DI-788, a new 32-channel data acquisition system designed specifically to accept DI-8B style modular signal conditioners and based on our Third Generation Ethernet (3GE) communications. The DI-788 is packaged in an enclosure that measures 16.5W × 18.5D × 3.5H inches (42.9W × 47D × 8.9H centimeters) that is suitable for placement on a desktop, or can be mounted in a standard 19-inch rack using optional brackets. It’s also the first product from DATAQ Instruments to feature a built-in switching AC power supply, allowing it to be powered directly from AC line voltage. The DI-788 features 14-bit resolution, programmable gain per channel of 1, 2, 4, and 8, a maximum sample throughput rate up to 180,000 samples per second, and two built-in 16-channel DI-8B module backplanes allowing up to 32 signal-conditioning modules. Measurements include thermocouple, voltage, strain, frequency, process current, RTD, and potentiometric.
The Ethernet communications interface connects the DI-788 to any local area network (LAN). Direct Internet access is also possible. This patented (US 7,792,139 B2) communication option uses standard CAT5 cable to yield continuous data acquisition throughput rates up to 180kHz. Multiple DI-785 and/or DI-788 products may be daisy-chained together to form an ad-hoc extended network of autonomous, yet fully synchronous data acquisition stations. Add any DI-720 and/or DI-730 for a complete data acquisition system for almost any measurement. Each station can sample at a different rate (up to 150kHz throughput) and still maintain full synchronization. Station separation can be as far as 100 meters.
Includes a DI-788 instrument, a 7-foot Ethernet cable, AC power cable, a screwdriver for signal connections
From sensor to results with one product
Accepts DI-8B series plug-in signal conditioning modules to condition any industrial signal
32 analog input channels, expandable to over 150
Ethernet interface supports synchronous and distributed data acquisition up to 100 meters apart. For greater distances between units, use the DI-789 Repeater Switch
Desktop unit with optional rack mount configurations
14-bit resolution
Up to 180 kHz Sample Throughput Rate
Specifications
Analog Inputs
- Number of Channels: 32 configured for DI-8B modules
- Channel Configuration: Defined by DI-8B module
- Measurement Range: Defined by DI-8B module
- Measurement Accuracy: ±0.25% of full scale range, ±100 µV
- Resolution: 14-bit
- Sample Rate Timing Accuracy: 50 PPM
- Sample Rate Timing Resolution: 62.5 ns
- Integral Linearity Error: ±1LSB
- Minimum Conversion Time: 4 microseconds
Digital I/O
- Bits: 8 inputs and 8 outputs
- Input voltage levels: Min. required “1” 2V; Max allowed “0” 0.8V
- Connections: Two 37-pin D-sub male
Scanning Characteristics
Max. throughput sample rate:
- Single Unit: 180,000 Hz
- Multiple Units (daisy-chained): 150,000 Hz per unit
Ethernet Interface (optional Ethernet to USB converter available)
- Type: 10/100Base-T
- Connectors: RJ-45 (Two: Primary and Expansion)
- Protocol: TCP/IP
- Server Type: DHCP or Fixed IP
- Cross-unit synchronization: Via secondary Ethernet port (RJ-45)
Power Characteristics
- Type: AC Line
- Voltage Range: 88 to 264 VAC rms
- Current Range: 1.3A @ 115VAC; 0.8A @ 230 VAC
- Frequency Range: 47 to 63 Hz
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