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TS-C-AD142 |
Dual 300KSPS 14-bit 2x4-Channel ADC Transient Capture DAQ PC Card |
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DescriptionThe AD142 is designed to provide a simple method of performing waveform capture in vibration analysis applications. The card has two synchronously clocked 14-bit A-to-D converters and two current sources that are tailored to power piezo electric accelerometers. Using built in triggering facilities it is possible to capture transients and one-time events. |
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Technical Features |
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Dual 14-bit 294KSample/s successive approximation A-to-D converters clocked synchronously for phase sensitive measurements on two channels. The sample rates are programmable for continuous sampling as well as allowing conversions under host software control. |
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Dual 4-channel fault protect input mux, with channel scanning logic, arranged so with 4 channels per ADC. |
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Input ranges of +/-2.5V as standard with external link / resistor settable gains allowing input ranges of +/-5.0V (link) down to +/-millivolts (with external resistors). Each ADC's channel can be set to a different gain. |
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Dual 3.8mA current sources are provided with voltage compliance from -5V to +22V. Internal DC blocking capacitors can be used for channels A1 and B1 to allow direct connection of 2 piezo electric accelerometers or other current powered transducers. Current sources can be disabled from software. |
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A-to-D data flows into a large 2x 16KSample FIFO on-card. The FIFO can be run in continuous streaming mode (throughput is PC speed dependent) but can also serve as a capture buffer for triggered acquisitions. This is similar to a digital storage oscilloscope, with level and edge triggering against a digital 8-bit threshold in hardware, and programmable pre or post triggering to allow waveform capture before/after a trigger event. These features are seldom found in PC Card DAQ solutions, making this card unique in its class. |
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A digital trigger input is also provided to allow burst acquisition to be triggered by an external event or process. |
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8 general purpose digital I/O lines are available for control and status monitoring, each being programmable as input or output and having TTL compatible input thresholds, and CMOS type output drive capability. |
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Power is available at the edge connector for signal conditioning, powering sensors etc. |
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Card comes with Elan's Card Center Pro software with kernel driver and data handling module, plus a top level Win32 GUI with source code to act as a starting point for your own development. Full hardware register data is provided to allow exact tailoring for bespoke applications. |
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Drivers for DOS, Win9x, Me, NT4, 2000, XP. (DOS support requires Card and Socket Services e.g. SystemSoft or Award). |
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Automatic O.S. recognition and configuration. Hot swappable PCMCIA 2.1+ compliant TypeII design. |
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Power consumption: Typical 290mA at 5V fully active, with support for reduced power sleep mode of typ. 20mA at 5V under host application software control. |
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Input mux channels can withstand voltages up to +/-35V with the card powered or not. |
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Supplied with 1m Type31 cable. Connector latches into PC Card for security. Terminates to DB37 Female with male screw jacks. Custom cabling available on request to set different gains and / or to offer dual coax to BNC connection or similar for connection to accelerometers. |
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Can be fitted with a unique Strain Relief Assembly to ruggedize the PC Card to cable connection (optional extra), product code "TSRA1-DAQ". |
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trademarks used in this data sheet are registered trademarks of the
relevant firms. LabView® and LabWindows® are registered trademarks of
National Instruments Corp. |
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