Lossless monitoring socket

Abstract

The present invention provides a lossless monitoring socket. The present invention provides a circuit board, a first spring, a second spring, a measuring head, a signal monitoring module and a reflective switch. The first spring and the second spring are located on the circuit board; the first spring is connected with the Ctrl pin of the reflective switch, and the second spring is connected with an earth point; the reflective switch is connected with the signal monitoring module; and the measuring head is inserted in the circuit board and touches the first spring and the second spring. The monitoring socket reduces the insertion loss of the monitoring part and realizes low TV insertion loss and high DS output level. The monitoring socket is able to control and monitor the switch on the circuit so as to allow the TV insertion loss to reduce 1dB. The lossless monitoring socket is used as the route usage without changing the user's usage habit and is convenient to use. The switch device is small in size without any influence on the layout of an original design. The lossless monitoring socket is simple and reliable in structure and low in cost.

Description

technical field [0001] The invention relates to the field of communication equipment, in particular to a nondestructive monitoring socket. Background technique [0002] In order to adapt to the existing radio and television market, CCMTS (namely ChinaCMTS Cable Modem Termination System) equipment needs to reserve the access port and monitoring contacts that allow CATV (radio and television cable television system) signals. In the prior art, the CCMTS DS signal (television signal) and TV signal (cable signal) are mixed through a splitter or distributor, and then a directional coupler is inserted into the main circuit for -20dB monitoring. [0003] The monitoring circuit diagram is as follows figure 1 As shown, the monitoring socket is only used as a monitoring contact, because the monitoring circuit itself has a loss of 1dB. When the monitoring circuit is not disconnected from the main circuit, this will increase the loss of 1dB, that is, increase the attenuation of the main...

AI Technical Summary

Problems solved by technology

If the above-mentioned 1dB attenuation is not reduced, it means that the number of amplifiers must be increased, which will cause a series of problems: increased cost; changes in power supply lead to changes in switching power supplies; structural changes caused by placement of amplifiers need to increase the enclosure , heat dissipation and radio frequency index instability, etc.

[0005] In the current technology, it is impossible to reduce the TV insertion loss by 1dB

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