An integrated probe and a test and measuring instrument with the integrated probe

Abstract

The invention discloses an integrated probe and a testing and measuring instrument with the integrated probe, which relate to the field of electric variable testing. The integrated probe includes a front-end assembly, a cable core, and a BNC connector. The front-end assembly includes a PCB board, probe pins and fixed pins installed on the PCB board, a compensation circuit installed on the PCB board, and a compensation circuit covered on the PCB board. The front-end insulating layer on the circuit, the metal shielding tube installed outside the front-end insulating layer, the BNC connector includes a BNC shell and a BNC core, the BNC shell includes a cable connection part and a front-end component connection part; one end of the BNC core is connected to the cable core Connection, the other end of the BNC core is connected to the fixed pin, and also has an integral injection molding layer, which is fixedly installed on the outer surface of the connection part of the front-end component of the BNC connector and the outer surface of the front-end component, so that the BNC connector and the front-end The components are fixedly connected; the front-end insulation layer also adopts an injection-molded rubber-coated layer, so that when the integrated injection-molded rubber-coated layer is injected, the metal shielding tube will not be deformed, and the equivalent capacitance at the front end of the probe will be stable.

Description

technical field [0001] The invention relates to the field of electric variable testing, in particular to a measuring probe of a device for displaying electric variable or waveform. Background technique [0002] A probe is a device used to test and collect signals from measuring instruments, and it inputs the collected signals into instruments and meters. Usually, the probe and the instrument are designed as a detachable structure to facilitate the handling, arrangement and use of instruments and meters. The most common test and measurement instruments include oscilloscopes, spectrum analyzers, and data acquisition devices. [0003] refer to figure 1 , the prior art probe includes a cable 1, a BNC (coaxial cable connector) body 3, a probe front end 5, and a probe interface 6. [0004] refer to figure 2 , The prior art probe front end 5 includes: a probe 14 , a probe interface 13 , a PCB board and a compensation circuit 16 , a probe core shell 15 , a shielding tube 12 , a...

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide an integrated probe for the problem that the BNC body and the shell of the probe are threaded in the prior art, the cost is high, and the thread may be loose.

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