Patent Application
20120008504
1. Technical Field
The present disclosure relates to port testing apparatuses and particularly to the testing of telecommunication ports of electronic devices.
2. Description of Related Art
Electronic devices for telecommunications need to take a conducted emission test before shipment. The conducted emission test includes two parts, one part is to test power ports and the other part is to test telecommunication ports. The power ports can be easily tested using a common multimeter. However, there is currently no appropriate testing apparatus for easily testing the telecommunication ports. Therefore, there is room for improvement in the art.
Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, all the views are schematic, and like reference numerals designate corresponding parts throughout the several views.
The disclosure, including the accompanying drawing in which like references indicate similar elements, is illustrated by way of example and not by way of limitation. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
Referring to
In one embodiment, the first power interface 11 is a three-hole power interface, namely three hole wall outlet, and the second power interface 12 is an N-type power interface. The first power interface 11 and the second power interface 12 also can be changed to other types of power interfaces according to requirements. In other embodiments, one of either the first power interface 11 or the second power interface 12 can be deleted or more than one other different power interfaces can be added to the testing apparatus 100 to satisfy different power interface requirements. The first switch K1 is used to switch the first power interface 11 and the second power interface 12. If there is only one type of power interface, the first switch K1 is correspondingly deleted.
In one embodiment, the first ports 13 and 14 are network ports, and the second ports 15 and 16 are telephone ports. The first ports 13 and 14 and the second ports 15 and 16 also can be changed to other types of ports according to requirements. In other embodiments, one of the first ports 13 and 14 and the second ports 15 and 16 can be deleted or more than one of other different ports can be added to the testing apparatus 100 to satisfy different telecommunication port requirements. The second switch K2 is used to switch the first port 13 and the second port 15, the third switch K3 is used to switch the first port 14 and the second port 16. If there is, only one type of telecommunication port, the second switch K2 and third switch K3 are also deleted correspondingly. Likewise, one of the ISNs 17 and 18 are also correspondingly deleted if there is only one type of telecommunication port.
The ISN 17 includes an input 171, an output 172, and the signal detecting pin 173. The ISN 18 includes an input 181, an output 182, and the signal detecting pin 183. The first power interface 11 and the second power interface 12 are respectively connected to the two switch portions of the first switch K1. The connection portion of the first switch K1 is connected to the connection portion of the second switch K2 through the first impedance matching network R1. The two switch portions of the switch K2 are respectively connected to the first port 13 and the second port 15. The first port 13 is connected to the input 171 of the ISN 17. The second port 15 is connected to the input 181 of the ISN 18. The output 172 of the ISN 17 is connected to the first port 14. The output 182 of the ISN 18 is connected to the second port 16. The first port 14 and the second port 16 are respectively connected to the two switch portions of the third switch K3. The connection portion of the switch K3 is grounded through the second impedance matching network R2.
The first impedance matching network R1 and the second impedance matching network R2 are used to match the impedance of the ISNs 17 and 18. In one embodiment, the impedances of the first impedance matching network R1 and the second impedance matching network R2 are respectively 100 ohms and 150 ohms. To make the impedances more precise, the first impedance matching network R1 and the second impedance matching network R2 each includes a plurality of resistors connected together. In one embodiment, the first impedance matching network R1 includes sixteen resistors R connected in a 4*4 matrix. The resistance of the resistor R is 100 ohms. The second impedance matching network R2 includes twenty-four resistors R connected in a 6*4 matrix.
Referring to
It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the embodiments, the disclosure is illustrative only, and changes may be made in details, especially in matters of shape, size, and arrangement of parts within the principles of the embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201010219821.6 | Jul 2010 | CN | national |
