Abstract: A digital time converter with an embodiment including a coarse measuring circuit and a fine measuring circuit. The fine measuring circuit allows an accurate determination of the temporal position of an event inside a period of the time base, by interpolation or averaging of sinusoids in quadrature, sampled coincidentally with a burst of impulses generated by the converter's triggering circuit.

Abstract: In a modular data acquisition system (4), a module comprises at least one analog-to-digital converter (12) for converting an analog input signal (IN1, IN2, IN3, IN4) into a digital signal (OUT1, OUT2, OUT3, OUT4), and a clock generating circuit (20) for supplying an internal clock signal (209). The module further comprises a connector for plugging in a removable connecting element (3) on the front side of the module (1) in order to connect it to a synchronization bus connecting several modules in said system. A clock selecting circuit (204) enables the selection of either a slave-clock status, wherein the converters (12) are synchronized by an external synchronization signal supplied by said synchronization bus, or of a master-clock status, wherein the converters are synchronized by said internal clock signal which is also used a external synchronization signal on said synchronization bus. Trigger signals can also be transmitted by the synchronization bus and by the connecting elements.

Abstract: A digital time converter with an embodiment including a coarse measuring circuit and a fine measuring circuit. The fine measuring circuit allows an accurate determination of the temporal position of an event inside a period of the time base, by interpolation or averaging of sinusoids in quadrature, sampled coincidentally with a burst of impulses generated by the converter's triggering circuit.

Abstract: A data acquisition module (1) includes an interconnection board (15) with several electronic components (3, 18) mounted on at least one side of said board. A protective cover (16) mounted opposite said side covers the electronic components (3, 18). In order to cool notably the module's analog-to-digital converters, a piston 41 connected to the protective cover (16) is pressed by a spring (43) against the upper side of at least one electronic component (3) so as to establish a thermal bridge between said electronic component and said protective cover. The piston is mounted in a piston carrier fastened on the cover (16). The diameter of the portion (410) of the piston (41) that is in contact with the electronic component (3) to be cooled is smaller than the diameter of the portion (411) of the piston that is in contact with the piston carrier (40).

Abstract: A data acquisition module (1) includes an interconnection board (15) with several electronic components (3, 18) mounted on at least one side of said board. A protective cover (16) mounted opposite said side covers the electronic components (3, 18).

Abstract: In a modular data acquisition system (4), a module comprises at least one analog-to-digital converter (12) for converting an analog input signal (IN1, IN2, IN3, IN4) into a digital signal (OUT1, OUT2, OUT3, OUT4), and a clock generating circuit (20) for supplying an internal clock signal (209). The module further comprises a connector for plugging in a removable connecting element (3) on the front side of the module (1) in order to connect it to a synchronization bus connecting several modules in said system.

Abstract: The charge sampling circuit comprises a current sampling switch, a charge amplifier and a charge-to-voltage converter.

Abstract: A delta sigma converter according to the present invention replaces the quantizer of a conventional delta sigma converter, such as a comparator followed by a latch, with N quantizers, each operating at a reduced frequency f.sub.s /N and phase offset from each other by 2.pi./N. The quantized outputs are assembled in accordance with a control signal to produce a feedback signal at a frequency f.sub.s and the feedback signal is applied to a subtractor of the delta sigma converter.

Abstract: The high speed precision composite amplifier includes a compensation network (7) which corrects the low frequencey distortions of the high speed amplifier F (2).