CN102141952A

CN102141952A - Device for testing system management bus

Info

Publication number: CN102141952A
Application number: CN2010103009993A
Authority: CN
Inventors: 于义筱; 王太诚
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Scienbizip Consulting Shenzhen Co Ltd
Priority date: 2010-02-01
Filing date: 2010-02-01
Publication date: 2011-08-03
Anticipated expiration: 2030-02-01
Also published as: CN102141952B

Abstract

The invention provides a device for testing a system management bus. The device comprises an expansion card interface, a first capacitor and a second capacitor; the expansion card interface comprises a first golden finger pin and a third golden finger pin; the first golden finger pin and the third golden finger pin respectively correspond to pins which are connected with a clock signal wire, a data signal wire and a grounding wire of the system management bus in the expansion card interface; both ends of the first capacitor are electrically connected with the first golden finger pin and the third golden finger pin, and outward stretched with two test probes for testing the data on the clock signal wire of the system management bus respectively; and both ends of the second capacitor are electrically connected with the first golden finger pin and the third golden finger pin, and outward stretched with two test probes for testing the data on the data signal wire of the system management bus respectively. The device for testing the system management bus can test the system management bus easily and conveniently.

Description

The System Management Bus proving installation

Technical field

The present invention relates to a kind of proving installation, particularly a kind of to System Management Bus (System Management Bus, SMBUS) proving installation tested of the signal on.

Background technology

System Management Bus is a bus commonly used on the computer motherboard, is commonly used to the System Management Bus equipment on the controlling computer motherboard, as some PCI (Peripheral Component Interconnect, Peripheral Component Interconnect) equipment or PCIE equipment.Before the computer motherboard shipment, generally need System Management Bus is tested, common method of testing is earlier with PCI equipment or a PCIE equipment, directly insert on the PCI socket or a PCIE socket corresponding on the computer motherboard as a network interface card, on network interface card, find corresponding signaling point (comprising a data signal point and a clock signaling point) then, and described two signaling points are drawn by bonding wire, be connected on the probe of testing tool and test.But there is following shortcoming in this method of testing: 1. draw the test signal point with the form of bonding wire on network interface card and can produce certain influence to the transmission quality of signal, cause measuring accuracy not high.2. can't try one's best near the end of signaling point in the position of bonding wire welding, causes the reflected signal of intervention bigger, and measuring accuracy is reduced greatly.3., further improve testing cost if long-time multiple welding can cause damage to network interface card.

Summary of the invention

In view of foregoing, the invention provides a kind of can be simply, make things convenient for the proving installation of test macro management bus, and this proving installation precision height, cost are low.

A kind of System Management Bus proving installation, be used to test the System Management Bus on the computer motherboard to be measured, described System Management Bus proving installation comprises a plate body, described plate body comprises that one can be plugged to the first expansion card interface of the first expansion card socket on the described computer motherboard to be measured, the described first expansion card interface comprises the first and the 3rd golden finger pin, in the respectively corresponding described first expansion card socket of the described first and the 3rd golden finger pin with the clock cable of described System Management Bus, the pin that data signal line and ground wire link to each other, also be provided with first and second electric capacity on the described plate body, the two ends of described first electric capacity are electrical connected with the described first and the 3rd golden finger pin respectively, also stretch out respectively two test probe of data on the clock cable that is used to test described System Management Bus of the two ends of described first electric capacity, the two ends of described second electric capacity are electrical connected with described second and third golden finger pin respectively, also stretch out respectively two test probe of data on the data signal line that is used to test described System Management Bus of the two ends of described second electric capacity.

Compare prior art, described System Management Bus proving installation is by being provided with the described first expansion card interface on described plate body, and clock cable with described System Management Bus is set in the described first expansion card interface, corresponding first to the 3rd golden finger pin of pin that data signal line and ground wire link to each other, can conveniently test the clock cable of described System Management Bus and the data on the data signal line by the test pin at described first and second electric capacity two ends again, test very convenient, and need not additionally to use network interface card to wait and test, provide cost savings greatly.In addition,, eliminated the noise on the signal wire effectively, and can reduce the generation of signal reflection phenomenon, improved measuring accuracy greatly because described System Management Bus proving installation has added first and second electric capacity at test lead.

Description of drawings

The invention will be further described in conjunction with embodiment with reference to the accompanying drawings.

Fig. 1 is the synoptic diagram in the better embodiment front of System Management Bus proving installation of the present invention.

Fig. 2 is the synoptic diagram at the better embodiment back side of System Management Bus proving installation of the present invention.

Fig. 3 is the synoptic diagram of the better embodiment middle probe of System Management Bus proving installation of the present invention.

Fig. 4 utilizes the better embodiment of System Management Bus proving installation of the present invention to test the synoptic diagram of a computer motherboard.

The main element symbol description

Plate body	10
		Pci interface	20
The PCIE interface	30
		Positive	12
The back side	14
		Electric capacity	C1-C4
The golden finger pin	21-23、31-34
		Test probe	41、42、51、52、61、62、71、72
Computer motherboard to be measured	80
		The PCI socket	82
Testing tool	90
		Probe	91、92

Embodiment

Please jointly referring to figs. 1 through Fig. 3, the better embodiment of System Management Bus proving installation of the present invention comprises a plate body 10, one edge of described plate body 10 is provided with a pci interface 20, another edge of described plate body 10 is provided with PCIE interface 30, the front 12 of described plate body 10 is provided with two capacitor C 1 and C2, and the back side 14 of described plate body 10 is provided with two capacitor C 3 and C4.

In the present embodiment, described plate body 10 can be printed circuit board (PCB).The size conforms PCI protocol specification of described pci interface 20 can be plugged on the PCI socket of computer motherboard, and the size conforms PCIE protocol specification of described PCIE interface 30 can be plugged on the PCIE socket (comprising two types of 1X and 16X) of host computer.

Described pci interface 20 is provided with first to the 3rd golden finger pin 21-23, the pin that described first to the 3rd golden finger pin 21-23 links to each other with clock cable, data signal line and ground wire on the System Management Bus on the corresponding PCI socket respectively, that is to say, when described pci interface 20 inserted on the PCI socket, the clock cable in the System Management Bus, data signal line and ground wire were electrical connected with described first to the 3rd golden finger pin 21-23 respectively.The two ends of described capacitor C 1 are electrical connected with the described first and the 3rd golden finger pin 21 and 23 respectively, the two ends of described capacitor C 1 also stretch out respectively two test probes 41 and 42.The two ends of described capacitor C 2 are electrical connected with described second and third golden finger pin 22 and 23 respectively, the two ends of described capacitor C 2 also stretch out respectively two

test probes

51 and 52.

Described PCIE interface 30 is provided with the 4th to the 7th golden finger pin 31-34, the pin that described the 4th to the 7th golden finger pin 31-34 links to each other with ground wire, clock cable, data signal line and ground wire on the System Management Bus on the corresponding PCIE socket respectively, that is to say, when described PCIE interface 30 inserted on the PCIE socket, the ground wire in the System Management Bus, clock cable, data signal line and ground wire were electrical connected with described the 4th to the 7th golden finger pin 31-34 respectively.The two ends of described capacitor C 3 are electrical connected with the described the 5th and the 4th golden finger pin 32 and 31 respectively, the two ends of described capacitor C 3 also stretch out respectively two test probes 61 and 62.The two ends of described capacitor C 4 are electrical connected with the described the 6th and the 7th golden finger pin 33 and 34 respectively, the two ends of described capacitor C 4 also stretch out respectively two test probes 71 and 72.Only show capacitor C 1 and coupled

test probe

41 and 42 among Fig. 3, other capacitor C 2-C4 all has identical structure with

corresponding test probe

51,52,61,62,71,72, does not provide one by one herein.

Please refer to Fig. 4, when using System Management Bus proving installation of the present invention and test System Management Bus on the computer motherboard 80 to be measured, the pci interface 20 of described System Management Bus proving installation is plugged on the PCI socket 82 of described computer motherboard to be measured 80, clock cable in the System Management Bus of this moment on the described computer motherboard 80 to be measured, data signal line and ground wire respectively with described pci interface 20 on first to the 3rd golden finger pin 21-23 be electrical connected, data on the clock cable in the System Management Bus as described in directly the

test probe

41 and 42 at capacitor C 1 two ends can test out as described in the contact with two probes 91 on the testing tool 90 (as oscillograph) and 92 on the computer motherboard 80 to be measured, again with

probe

91 and 92 directly the

test probes

51 and 52 at the described capacitor C of contact 2 two ends can test out data on the data signal line in the System Management Bus on the described computer motherboard to be measured 80.

In like manner, if the PCIE interface 30 of described System Management Bus proving installation is plugged on the PCIE socket (not shown) of described computer motherboard to be measured 80, again with the probe on the testing tool 90 91 and 92 directly the test probes 61 and 62 at the described capacitor C of contact 3 two ends can test out data on the clock cable in the System Management Bus on the described computer motherboard to be measured 80, again with

probe

91 and 92 directly the test probes 71 and 72 at the described capacitor C of contact 4 two ends can test out data on the data signal line in the System Management Bus on the described computer motherboard to be measured 80.

Use System Management Bus proving installation of the present invention and System Management Bus on the computer motherboard is tested very convenient, and need not additionally to use network interface card to test, provide cost savings greatly.In addition,, eliminated the noise on the signal wire effectively, and can reduce the generation of signal reflection phenomenon, improved measuring accuracy greatly because described System Management Bus proving installation has added capacitor C 1-C4 at test lead.

Claims

1. System Management Bus proving installation, be used to test the System Management Bus on the computer motherboard to be measured, described System Management Bus proving installation comprises a plate body, described plate body comprises that one can be plugged to the first expansion card interface of the first expansion card socket on the described computer motherboard to be measured, the described first expansion card interface comprises the first and the 3rd golden finger pin, in the respectively corresponding described first expansion card socket of the described first and the 3rd golden finger pin with the clock cable of described System Management Bus, the pin that data signal line and ground wire link to each other, also be provided with first and second electric capacity on the described plate body, the two ends of described first electric capacity are electrical connected with the described first and the 3rd golden finger pin respectively, also stretch out respectively two test probe of data on the clock cable that is used to test described System Management Bus of the two ends of described first electric capacity, the two ends of described second electric capacity are electrical connected with described second and third golden finger pin respectively, also stretch out respectively two test probe of data on the data signal line that is used to test described System Management Bus of the two ends of described second electric capacity.

2. the system as claimed in claim 1 management bus proving installation, it is characterized in that: the described first expansion card interface is a pci interface or a PCIE interface.

3. the system as claimed in claim 1 management bus proving installation, it is characterized in that: described plate body comprises that also one can be plugged to the second expansion card interface of the second expansion card socket on the described computer motherboard to be measured, the described second expansion card interface comprises the 4th and the 7th golden finger pin, the the described the 4th and the 7th golden finger pin respectively in the corresponding described expansion card socket with the ground wire of described System Management Bus, clock cable, the pin that data signal line and ground wire link to each other, also be provided with the 3rd and the 4th electric capacity on the described plate body, the two ends of described the 3rd electric capacity are electrical connected with the described the 5th and the 4th golden finger pin respectively, also stretch out respectively two test probe of data on the clock cable that is used to test described System Management Bus of the two ends of described the 3rd electric capacity, the two ends of described the 4th electric capacity are electrical connected with the described the 6th and the 7th golden finger pin respectively, also stretch out respectively two test probe of data on the data signal line that is used to test described System Management Bus of the two ends of described the 4th electric capacity.

4. System Management Bus proving installation as claimed in claim 3 is characterized in that: the described first expansion card interface is a pci interface, and the described second expansion card interface is a PCIE interface.