Multi-circuit signal transformer
First Claim
1. A multi-circuit, impedance transformer module for use with a chassis, the module comprising:
- a housing including opposing faces, a plurality of exposed first connectors for connecting to twisted pair cables, a plurality of exposed second connectors for connecting to coaxial cables and a plurality of exposed attenuation pads;
a plurality of circuitry electrically connecting the first connectors and the second connectors including baluns to convert twisted pair wire signals from the first connectors to coaxial cable signals at the second connectors, and to convert coaxial cable signals from the second connectors to twisted pair wire signals at the first connectors, the circuitry including the removable attenuation pads; and
the housing including oppositely extending flanges for mounting the module to the chassis.
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Accused Products
Abstract
Multiple digital audio transformer circuits are included in a module for mounting in a chassis. These digital audio transformer circuits are comprised of a front mounted twisted pair digital audio cable connector and a rear mounted coaxial cable connector, with circuitry including baluns electrically linking the front and rear connectors to reduce the impedance of the signal and attenuate the amplitude of the signal voltage. In one embodiment, the module may also include removable attenuation pads accessible through the front face of the module to allow variation of the level of voltage attenuation. The preferred embodiment of the module bi-directional transforms 110 Ohm digital audio signals and 75 Ohm coaxial signals. If transformation of other levels of impedance are desired, modules may also allow for removal and replacement of the baluns. A digital audio transformer system including multi-circuit modules and rack mount equipment chassis is also provided.
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Citations
16 Claims
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1. A multi-circuit, impedance transformer module for use with a chassis, the module comprising:
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a housing including opposing faces, a plurality of exposed first connectors for connecting to twisted pair cables, a plurality of exposed second connectors for connecting to coaxial cables and a plurality of exposed attenuation pads;
a plurality of circuitry electrically connecting the first connectors and the second connectors including baluns to convert twisted pair wire signals from the first connectors to coaxial cable signals at the second connectors, and to convert coaxial cable signals from the second connectors to twisted pair wire signals at the first connectors, the circuitry including the removable attenuation pads; and
the housing including oppositely extending flanges for mounting the module to the chassis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A digital audio impedance transformer system comprising:
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a plurality of digital audio impedance transformer modules, each module including;
a housing including opposing faces, a plurality of exposed first connectors for connecting to twisted pair cables, a plurality of exposed second connectors for connecting to coaxial cables and a plurality of exposed attenuation pads;
a plurality of circuitry electrically connecting the first connectors and the second connectors including baluns to convert twisted pair wire signals from the first connectors to coaxial cable signals at the second connectors, and to convert coaxial cable signals from the second connectors to twisted pair wire signals at the first connectors, the circuitry including the removable attenuation pads; and
the housing including oppositely extending flanges for mounting the module to the chassis;
the chassis holding a plurality of the modules, a fastener mounting each flange of each module to the chassis. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A multi-circuit, impedance transformer module for use with a chassis, the module comprising:
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a housing including a plurality of exterior faces, a plurality of exposed first connectors linearly arranged for connecting to twisted pair cables, each of the first connectors including three contacts aligned linearly arranged in a line parallel to the line of the first connectors, a plurality of exposed second connectors for connecting to coaxial cables, the second connectors linearly arranged in a line parallel to the line of the first connectors;
a plurality of circuitry electrically connecting the first connectors and the second connectors including baluns to convert twisted pair wire signals from the first connectors to coaxial cable signals at the second connectors, and to convert coaxial cable signals from the second connectors to twisted pair wire signals at the first connectors; and
the housing including oppositely extending flanges for mounting the module to the chassis.
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Specification