CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit

A technology for fixing attenuators and identifying circuits, which can be applied to instruments, televisions, voltage dividers, etc., and can solve problems such as low efficiency of investigation and large investment in labor costs

Active Publication Date: 2018-12-18
APPLIED OPTOELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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This approach is low in efficiency

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  • CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit
  • CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit
  • CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit

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Embodiment Construction

[0018] For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are descriptions of exemplary embodiments of the application only, and are not intended to limit the scope of the application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0019] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for convenience of illustration. The drawings are examples only and are not strictly drawn to scale.

[0020] It should also be understood that the terms "comprising", "comprising", "having", "comprising", "comprising", when used in this specification, mean that there are described features, integers, steps, operations, elements and / or or components, but does not exclude the presence or addition of one or more other features, integers, ste...

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Abstract

The invention discloses a CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit, which comprises an insertion sheet type fixed attenuator, a power supply module, a detection module and an MCU (Microprogrammed Control Unit) identification module, wherein the power supply module is used for supplying power to the identification circuit; the detection moduleis used for detecting the partial pressure value of an output circuit; the MCU identification module is used for automatically judging which the attenuator of a value the detected partial pressure value belongs to; the power supply module is connected to the input end of the insertion sheet type fixed attenuator; the detection module is connected to the output end of the insertion sheet type fixed attenuator; and the detection module is connected with the MCU identification module. By use of the identification circuit, the CATV insertion sheet type fixed attenuator can be effectively identified so as to remotely judge whether a net operation is correct or not, and problems can be subjected to positioning and fixed point analysis when faults happen.

Description

technical field [0001] The invention relates to the technical field of plug-in fixed attenuators, and more precisely relates to a CATV plug-in fixed attenuator identification circuit. Background technique [0002] CATV plug-in fixed attenuators are widely used in CATV products, and the generally used attenuation values ​​are from 0db, 1db, 2db... to 20db. It will be used in the input stage, intermediate stage and output stage of the uplink and downlink to adjust the signal input level of the previous stage product, its own signal matching and the signal size output to the next stage product. In addition, CATV plug-in fixed attenuators are also used in other applications such as equalization circuits. [0003] Based on the physical characteristics of the CATV plug-in fixed attenuator, if a product on the line fails, or the CATV plug-in fixed attenuator is damaged, loose, or inserted incorrectly, the line network engineer must go to the site to check the products one by one ...

Claims

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Application Information

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IPC IPC(8): G01R15/06G01R15/16G01R19/25G01R31/02
CPCG01R15/06G01R15/16G01R19/2509G01R31/50G01R31/2825G01R27/28H04N7/102G01R15/04
Inventor 张励包明俊谭人豪
Owner APPLIED OPTOELECTRONICS INC
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