| 摘要 |
This transducer multiplexer enables a multiplicity of individual bridge type transducers to be calibrated simultaneously under computer control. The various transducers are connected to a common loading means capable of providing a variety of known loads to the transducers also under computer control. The transducer multiplexer communicates with an external control computer over a standard interface bus. The microprocessor in the transducer multiplexer interprets and executes the commands, received over the interface bus, to perform one of the following tasks: (a) calibration resistor selection means; (b) bridge leg selection means which select one of the legs of one of the transducers to which the selected calibration resistor is applied in parallel; or (c) channel selection means which select one of the transducers for testing and calibration in conjunction with the loading means or in conjunction with the calibration resistor and bridge leg selection means, and output means providing signals representing the response to the transducers. Manual control of these functions is also provided through lighted pushbutton switches on the front panel.
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