CN204102578U

CN204102578U - The DDR particle signal measurement jig of embedded board

Info

Publication number: CN204102578U
Application number: CN201420634930.8U
Authority: CN
Inventors: 姜韬; 陈卫东; 范建根
Original assignee: Suzhou Keda Technology Co Ltd
Current assignee: Suzhou Keda Technology Co Ltd
Priority date: 2014-10-30
Filing date: 2014-10-30
Publication date: 2015-01-14
Anticipated expiration: 2024-10-30

Abstract

The utility model discloses a kind of DDR particle signal measurement jig of embedded board, it is characterized in that: comprise, plate body (2), the backing weld of described plate body (2) is on veneer to be measured (1), the top layer of described plate body (2) is provided with pad (4), the DDR particle of described pad (4) and veneer to be measured (1) is welded to connect, and the top layer of described plate body (2) is also provided with some instrument connections (3), and described instrument connection (3) is with described DDR particle signal one_to_one corresponding and be electrically connected.It is comparatively complicated that this measurement jig solves the existing method of testing for testing embedded board DDR particle signal, and test insufficient, test result is inaccurate.

Description

The DDR particle signal measurement jig of embedded board

Technical field

The utility model belongs to internal memory tool and manufactures and designs field, particularly a kind of DDR particle signal measurement jig of embedded board.

Background technology

Now, most of electronic equipment (as mobile phone, panel computer, switch, watch-dog etc.) adopts embedded system, along with embedded system processing power from strength to strength, the function realized gets more and more, the frequency of operation of system is more and more higher, the frequency of operation of DDR also brings up to 200MHz from 133 minimum MHz gradually, thus achieves larger system bandwidth and better performance.Due in embedded system processor run all programs and data be all placed in internal memory, therefore internal memory can reliably working very large to the influence on system operation of system.

In development, in order to the correctness that proof scheme design and placement-and-routing design, ensure can normally work between CPU and DDR internal memory, need to use the signal on each pin of oscillograph test CPU and DDR memory grain whether normal; But because the pin of all DDR is all attached on pcb board at the particle back side; can only be tested by the cabling that is connected with each pin or via hole; existing method of testing is that tester contrasts schematic diagram and PCB file is found test point one by one and carries out signal testing one by one on veneer; but because the device density on veneer is more and more higher; the PCB number of plies also gets more and more; often there will be part signal cannot find apart from the nearer test point of chip; not pop one's head in the test point that can put even at all, cause test result inaccurate or test insufficient.

Utility model content

For this reason, technical problem to be solved in the utility model is that the existing method of testing for testing embedded board DDR particle signal is comparatively complicated, test insufficient, test result is inaccurate, and then provides a kind of DDR particle signal measurement jig can testing embedded board easily.

For solving the problems of the technologies described above, the DDR particle signal measurement jig of a kind of embedded board of the present utility model, comprise, plate body, the backing weld of described plate body is on veneer to be measured, and the top layer of described plate body is provided with pad, and the DDR particle of described pad and veneer to be measured is welded to connect, the top layer of described plate body is also provided with some instrument connections, and described instrument connection is with described DDR particle signal one_to_one corresponding and be electrically connected.

In the DDR particle signal measurement jig of above-mentioned embedded board, described plate body is pcb board.

In the DDR particle signal measurement jig of above-mentioned embedded board, described instrument connection is positioned at around described pad.

In the DDR particle signal measurement jig of above-mentioned embedded board, described instrument connection is positioned at upside and/or the downside of described pad.

In the DDR particle signal measurement jig of above-mentioned embedded board, the top layer of described plate body is also provided with mark, described home position and described instrument connection one_to_one corresponding.Preferably, silk-screen mark is designated described in.

Technique scheme of the present utility model has the following advantages compared to existing technology:

The utility model adopts measurement jig for testing the DDR particle signal of embedded board, the backing weld of the plate body of this measurement jig is on the pad that the DDR of veneer to be measured is corresponding, the top layer of plate body is provided with pad, the DDR particle of described pad and veneer to be measured is welded to connect, the top layer of described plate body is also provided with some instrument connections, and described instrument connection is with described DDR particle signal one_to_one corresponding and be electrically connected.The mode of this measurement jig by being drawn by DDR signal, ensures that test is to all test signals on DDR particle, avoids the operation such as borehole, kerf simultaneously, improves testing efficiency.

Accompanying drawing explanation

In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein

Fig. 1 is the structural representation of the DDR particle signal measurement jig of embedded board of the present utility model;

In figure, Reference numeral is expressed as: 1-veneer to be measured, 2-plate body, 3-instrument connection, 4-pad, and 5-identifies.

Embodiment

Below with reference to accompanying drawing, following examples are used to be further elaborated the utility model.

The DDR particle signal measurement jig of Fig. 1 embedded board disclosed in the utility model, comprise, plate body 2, described plate body 2 is pcb board, the backing weld of described plate body 2 is on veneer 1 to be measured, the top layer of described plate body 2 is provided with pad 4, described pad 4 is welded to connect with the DDR particle of veneer 1 to be measured, the top layer of described plate body 2 is also provided with instrument connection 3 described in some instrument connections 3 with described DDR particle signal one_to_one corresponding to be electrically connected.

The mode of the utility model by the DDR particle signal on embedded board being drawn by above-mentioned measurement jig, makes the DDR particle signal of veneer 1 to be measured all can be tested, avoids the operation such as borehole, kerf simultaneously, improves testing efficiency.

As a kind of concrete embodiment, in the present embodiment, described instrument connection 3 is positioned at the upper side and lower side of described pad 4.Those skilled in the art should be able to expect, described instrument connection 3 can also be positioned at described pad 4 around.Measurement jig can be made to take up room less.

Corresponding instrument connection 3 described in each, the top layer of described plate body 2 is also provided with silk-screen mark, described silk-screen home position and described instrument connection 3 one_to_one corresponding.Described silk-screen label table illustrates the signal name that each signal testing point is corresponding.

In described veneer 1 process segment to be measured, measurement jig 2 is mounted on veneer 1 on DDR welding post, and DDR particle is mounted on the DDR welding post on measurement jig 2.The signal integrity of DDR particle is tested in the prompting that can identify 5 according to silk-screen during tester's test signal quickly and easily.

Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.

Claims

1. the DDR particle signal measurement jig of an embedded board, it is characterized in that: comprise, plate body (2), the backing weld of described plate body (2) is on veneer to be measured (1), the top layer of described plate body (2) is provided with pad (4), the DDR particle of described pad (4) and veneer to be measured (1) is welded to connect, and the top layer of described plate body (2) is also provided with some instrument connections (3), and described instrument connection (3) is with described DDR particle signal one_to_one corresponding and be electrically connected.

2. the DDR particle signal measurement jig of a kind of embedded board according to claim 1, is characterized in that: described plate body (2) is pcb board.

3. the DDR particle signal measurement jig of a kind of embedded board according to claim 1 and 2, is characterized in that: described instrument connection (3) is positioned at described pad (4) around.

4. the DDR particle signal measurement jig of a kind of embedded board according to claim 1 and 2, is characterized in that: described instrument connection (3) is positioned at upside and/or the downside of described pad (4).

5. the DDR particle signal measurement jig of a kind of embedded board according to claim 1, is characterized in that: the top layer of described plate body (2) is also provided with mark (5), described mark (5) position and described instrument connection (3) one_to_one corresponding.

6. the DDR particle signal measurement jig of a kind of embedded board according to claim 5, is characterized in that: described mark (5) is silk-screen mark.