Abstract: A validation document while responding to a customer's demand is efficiently created. A server creates a first sample document upon receiving, from a terminal device, a request for creation of the first sample document including an inspection item targeted for a first device. The terminal device receives an operation of inputting the parameter value to the first sample document, and transmits the inputted parameter value to the server. The server creates a first validation document on the basis of the parameter value received from the terminal device and on the basis of the first sample document.

Abstract: A remote terminal for use in an acoustic measuring system comprises a measuring device including an input terminal supplied with an analog signal to be measured, an A/D converter for converting the analog signal to a digital signal and an output terminal for manifesting an analyzed result of the analog signal; an analyzing apparatus is used for processing the data of the digital signal and for generating the analyzed result. The measuring device and the analyzing apparatus are coupled by MODEMs to each other through a data transmission circuit.

Abstract: A transmitting and reproducing system includes an encoder for selectively combining at least four signals for transmission along two channels. At least three of the signals are combined in a predetermined amplitude and phase relationship to form a first unmodulated signal and at least one of the three signals is used to vestigially modulate a carrier. The unmodulated signal and the modulated carrier are combined for transmission along one of the channels. A different grouping of three of the signals are combined in a different predetermined amplitude and phase relationship to form a second unmodulated signal, and at least one signal different from the first modulating signal is used as a second modulating signal for vestigial modulation of the carrier. The second unmodulated signal and the carrier modulated by the different signal are combined for transmission on the second channel.

Abstract: An amplifying circuit for use with a transducer includes a pair of field-effect transistors which are of different conductive types from each other and each of which has gate, drain and source electrodes. The gate electrodes of the field-effect transistors are connected to each other and are further connected to an output terminal of an electrostatic type mechanical-electrical transducer, while the source electrodes of the field-effect transistors are connected to each other and are further connected to an output circuit. One of the drain electrodes is connected to a voltage source and the other drain electrode is connected to the circuit ground. High input impedance is maintained by using no gate resistor at the input, and using a current-sourced source-follower secondstage. Source resistors improve linear performance.