Brands     Vishay Measurements Group     Interactive Guide     Instruments     Model 2000
Model   2000 Analog-to-Digital Converter           Description The Model 2000 Analog-to-Digital Converter Module, programmable with simple commands to a GPIB (IEEE-488) interface, accepts up to 16 analog signals of + 10 Vdc full scale. The 14-bit successive-approximation ADC samples the inputs at one of six programmable rates up to 50 000 readings per second. In the asynchronous mode, digital data may be transferred to the interface in either ASCII or binary format. In the synchronous mode, used for more rapid transfers, data is sent in binary format. Mountable in a standard 19-in (483-mm) equipment rack, the Model 2000 is shipped with ready-to-use software for data acquisition, storage, and presentation, as well as the additional computer code needed for utilizing the hardware with second-party and owner-developed software. To take full advantage of the Model 2000's hardware and software features, a 486 computer is recommended as the minimum system requirement. Specifications/Hardware All specifications nominal or typical at +23 deg C unless noted. Analog Input: 16 single-ended signals + 10V input range (+2V optional range) >100 megohm input impedance 25 Vrms max. input without damage Multiplexer: 1 of 16 CMOS switch Conversion: Successive-approximation ADC Technique: 14-bit resolution 50 000 samples/second max. System Accuracy: + 1 LSB max. integral nonlinearity + 1 LSB max. differential nonlinearity + 2 LSB max. offset error, + 1 LSB typ. + 3 LSB max. gain error, + 1LSB typ. + 0.5 LSB rms typ. system noise Interface: GPIB (IEEE-488) with talker/listener function Data Transfer Format: Binary or ASCII in asynchronous mode; Binary in high-speed synchronous mode Programmable Features: Direct or sequential channel selection, sample clock speed, data format, sample mode Power: 115/230 Vac, 50-60 Hz, approx. 15W Size: 3.5 H x 19.0 W x 13.0 D in (89 x 483 x 330 mm) Weight: 6 lb (2.75 kg) Specifications/Software Applications: Ready-to-use Microsoft Windows 3.1-based software for making measurements with Model 2000 hardware. Indicator Mode (Asynchronous):     Add/delete/modify connections to strain gage instrumentation     Save/retrieve/display setup information     Calibrate in microstrain, A/D counts, or user-defined units     Scan/view/print selected data online in indicator mode     Record data to disk at timed intervals (0.25s to 60h) in recorder mode     Plot/print recorded data Scanner Mode (Synchronous):     Add/delete/modify connections to strain gage instrumentation     Save/retrieve/display setup information     Calibrate in microstrain, A/D counts, or user-defined units     Scan/record at rates up to 50 000 samples/second     Plot/print recorded data Programming Examples: Source code in Borland Pascal and Microsoft Visual Basic for simple synchronous and asynchronous operations. Windows 3.1 DLL's: Software simulator and interfaces for commonly available GPIB'S.