JP2001060781A - Debugging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a debugging device for measuring a circuit module in a state close to the actual usage state of a circuit module and for performing measurement without causing the unexpected change in a waveform even in a circuit module operating with a high-speed signal. SOLUTION: A debugging device 1 can be freely attached to or detached from a main substrate being arranged in the casing of an electronic device and performs debugging by measuring the electrical characteristics of a circuit module where electronic parts are incorporated. The debugging device 1 is provided with an extension means 2 for essentially taking out circuit modules 44 (44-1-44-7) from a casing 41 while it is electrically connected to a main substrate 42, and a relay means 3 that is connected to the extension means 2 for connecting the circuit modules 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a debugging device for measuring the electrical characteristics of a circuit module, and more particularly, to a debugging device which is detachably mountable to a main board disposed in a casing of an electronic device and has electronic components incorporated therein. The present invention relates to a debugging device for measuring and debugging electrical characteristics of a circuit module.

[0002]

2. Description of the Related Art Conventionally, various types of electronic devices have been used for mounting,
In consideration of maintainability and handleability, it is often the case that a desired wiring pattern is formed and an electronic component is mounted to have a specific function, and this is used as one unit (circuit module). Then, this one printed wiring board is made into one circuit module, or a plurality of printed wiring boards is combined into one circuit module, and these circuit modules are connected to the main board (for example, in a metal housing (casing)). (Motherboard) so as to be detachably stored.

FIG. 5 shows an example of a conventional electronic device having the above-described circuit module. As shown in FIG. 5, in the electronic device 40, for example, a main board 42 (mother board) is arranged on the inner side (opposite to the opening 46) of a casing 41 having an opening 46 on one end surface. The main board 42 includes circuit modules 44-1 and 44-2,.
A large number of connectors 47 for mounting 44-n are provided, and a space 43 on the back side of the main board 42 (the side opposite to the side on which the connectors 47 are provided) is provided.
Although not shown, for example, a control unit and a power supply unit are arranged. Although not shown, the upper and lower edges of the circuit modules 44-1, 44-2,..., 44-n are slidably held on the inner wall surface of the casing 41 so that the circuit modules can be easily attached and detached. Guide rail is provided.

Then, the circuit modules 44-1 and 44-2,
..When mounting 44-n, the circuit module 44
-1, 44-2,..., 44-n connector part 45 (see FIG. 6)
Into the connector 47 of the motherboard 42 (in the direction of arrow A). On the other hand, the circuit module 44-1,
.. 44-n are removed by operating the circuit module to be pulled out of the casing 41 (operating in the direction of arrow B).

[0005] When the electronic device constructed as described above is prototyped or manufactured, whether or not the electronic device operates normally is measured and inspected, a faulty part is found, and the faulty part is corrected. Processing is performed. This debugging process checks whether each of the circuit modules 44-1, 44-2,..., 44-n operates normally, and whether or not signals are properly exchanged between the circuit modules. Do.

However, this type of electronic device 40 is
As shown in FIG. 5, each of the circuit modules 44-1 and 44-2,
.. 44-n being the main board 42 on the back side in the casing 41
Not only are mounted on each of the circuit modules 44, but also mounted very close to each other.
-1, 44-2,..., 44-n, means for measurement and inspection such as an inspection probe cannot be inserted.

For this reason, conventionally, when performing a measurement for debugging, for example, an extension means (expander) 50 for circuit connection as shown in FIG. 6 has been used. The extension means 50 has one end thereof connected to the main board 4.
The circuit module to be measured is connected to the second connector 47 and the other end is connected to the measurement module 44-1 or 44-2 so that the circuit module to be measured is taken out of the casing 41.

[0008]

As described above, by taking out the circuit module to be measured from the casing 41 by using the extension means 50, the circuit module can be brought into a state in which it can be easily measured.

However, when the above-mentioned extension means 50 is used, the signal line length between the circuit modules becomes long, for example, the measurement waveform changes, and accurate measurement and inspection in the measurement circuit module may not be performed. . In particular, in a circuit module having a high-speed signal that has been required recently, there has been a problem that an accurate measurement in actual signal transfer cannot be performed and an accurate debugging process cannot be performed.

The present invention has been made in view of the above problems, and has as its object to measure a circuit module in a state close to the actual use state of the circuit module when performing a debugging process. Even for circuit modules with high-speed signals, by minimizing the signal line length between circuit modules, it is possible to measure without unexpected changes in the waveform, and to perform extremely accurate debugging processing. Is to provide.

[0011]

SUMMARY OF THE INVENTION A debugging device according to the present invention is an electric device for a circuit module which is detachable from a main board disposed in a casing of an electronic device and in which electronic components are incorporated. A debugging device for measuring a characteristic, wherein the circuit module is capable of substantially extending from the casing while being electrically connected to the main board; and The present invention is characterized by having a relay means configured to be connectable to a circuit module (claim 1), whereby the object can be achieved.

In the debugging device according to the present invention, the extension means is constituted by a printed circuit board having connectors provided at both ends (Claim 2). The extension means has connectors at both ends. And at least a part thereof is formed of a flexible member that can be bent (Claim 3). The relay unit is formed of a printed circuit board having connectors on both front and back sides to which the circuit module can be connected. (Claim 4).

(Operation) The debugging device according to the present invention comprises:
When measuring and debugging the electrical characteristics of a circuit module which is detachable from a main board disposed in a casing of an electronic device and in which electronic components are incorporated, the circuit module is electrically connected to the main board. Since it has an extension means that can be substantially taken out of the casing in a state of being electrically connected, it is easy to measure the measurement circuit module,
Further, by means of the relay means connected to the extension means so that a plurality of circuit modules can be connected, the circuit module is set in the same state as the state in which the circuit module is actually mounted in the electronic device, and the signal is measured via the extension means. Since it is not necessary to do so, for example, it is possible to perform accurate signal measurement while avoiding a change in the measurement waveform. (Claim 1)

Further, in the debugging device according to the present invention, when the extension means is constituted by a printed circuit board, the relay means can be firmly held by the extension means.
(Claim 2)

In the debugging device according to the present invention, if the extension means is constituted by a flexible member which is at least partially bendable, the relay means can be freely moved as required. (Claim 3)

In the debugging apparatus according to the present invention, when the relay means is constituted by a printed circuit board having connectors connectable to the circuit module on both front and back sides, for example, a measured or non-probe circuit module By attaching the measurement circuit module to the front side while the circuit module is attached to the back side, the circuit module is almost in the same connection state as that installed in the actual electronic device (the circuit modules are substantially connected to each other without an extension circuit). Can be measured in a state where they are regularly arranged). (Claim 4)

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a debugging device according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic perspective view of a debugging device according to a first embodiment of the present invention. FIG. 2 is a schematic plan view of the debugging device shown in FIG. FIG. 3 is a schematic plan view of a debugging device according to the second embodiment. FIG. 4 is a schematic view showing another embodiment of the circuit module.

(First Embodiment) A first embodiment of the debugging device according to the present invention will be described. As shown in FIGS. 1 and 2, a debugging device 1 according to a first embodiment
Is composed of the extension means 2 and the relay means 3, and the electronic device 40
It is configured to be detachable with respect to a main board 42 arranged in a casing 41. The extension means 2 is composed of a printed circuit board provided with connectors 5 and 6 at both ends. The extension means 2 includes circuit modules 44-1, 44-2,...
When measuring and debugging the electrical characteristics of -n, these circuit modules 44-1, 44-2,..., 44-n are substantially connected to the main board 42 from the casing 41 while being electrically connected thereto. Can be put out. Note that the thickness t of the extension means 2 is determined by the circuit modules 44-1, 44-2,.
It is configured to have the same thickness as.

The relay means 3 in this embodiment is constituted by a printed circuit board provided with connectors on both front and back sides for connecting circuit modules 44-1, 44-2,..., 44-n. (The upper side in the figure) The attached circuit modules 44-1, 44-2, 44-3, 44-5, 44-6, 4
4-7 and the circuit module 44-4 attached to the front side are configured to be appropriately connected. That is, the relay means 3 is connected to the extension means 2 and has almost the same state as when all the circuit modules 44-1, 44-2,... (Signal line is the shortest length).

The electronic device 40 shown in FIG. 1 is, for example, a device used as an SDH (Synchronous Digital Hierarchy) analyzer, and has a casing having an open end 46 at one end similarly to the configuration shown in FIG. A main board 42 is arranged on the back side of 41. Then, with respect to the main board 42, the circuit modules 44-1 and 44-2,
.. Are provided with a large number of connectors 47 to which the 44-n is mounted. Furthermore, the upper and lower edges of the circuit modules 44-1 and 44-2,. A guide rail (not shown) for guiding the motor is provided. Further, a space 43 on the back side of the main board 42 is provided.
, For example, a control unit and a power supply unit are arranged.

The attachment / detachment of the extension means 2 to / from the electronic device 40 in this embodiment is performed by the circuit modules 44-1, 44-2,.
By performing a sliding operation along a guide rail (not shown) provided on the inner wall of the casing 41 as in the case of performing the attaching / detaching operation of the 44-n, the connector portion 5 of the extension means 2 and the main board 42 are operated. Can be attached to and detached from the connector 47.

As described above, the debugging device 1 can easily measure the electrical characteristics of the circuit module by firmly fixing the extension means 2 to the electronic device 40. Further, each circuit module 44-
1, 44-2,..., 44-n can be mounted in the actual electronic device (the signal line between the circuit modules is not longer than necessary), and the extension means is used as in the conventional case. It is not necessary to measure the signal, and the signal can be measured without changing the measured waveform.

(Second Embodiment) A second embodiment according to the present invention will be described below with reference to FIG. In addition,
3, the same components as those shown in the first embodiment (FIGS. 1 and 2) are given the same reference numerals, and description thereof will be omitted as appropriate. The debugging device 31 according to the second embodiment includes an extension unit 32 and a relay unit 33, and is attached to and detached from a main board 42 disposed in a casing 41 of the electronic device 40 as in the first embodiment. It is freely configured. A characteristic configuration of the debugging device 31 according to the present embodiment is that the extension unit 31 includes a flexible portion 38 that can be bent.

That is, the extension means 32 has, for example, an insertion portion 37 formed of a printed circuit board and inserted into the casing 41, and a flexible portion 38 formed of a flexible electric wire that bends like a joint. The configuration is as follows. Therefore, while the insertion portion 37 is inserted into the casing 41 and fixed to the main board 42 via a guide rail or the like, the flexible portion 38 can be freely bent outside the casing 41 as shown by an arrow C, for example. it can. Accordingly, the debugging device 31 in the present embodiment can freely move the relay unit 33 as necessary so that the measurement can be easily performed depending on, for example, the state where the electronic device 40 is placed. .

In both of the above embodiments, the circuit module is described as being constituted by one printed circuit board. However, the debugging device according to the present invention can be applied to various circuit modules. As in the circuit module 20 shown in FIG. 4, a relatively large configuration in which the connector 45 is located on one end surface side of the case 21 and a plurality of printed circuit boards 22 are appropriately connected in the case 21 may be employed. In the case of the configuration shown in FIG. 4, when measuring the circuit module 20, the case 21 is appropriately removed.

[0026]

As described above in detail, according to the debugging device of the present invention, the electronic component is detachably attached to the main board disposed in the casing of the electronic device. When measuring the electrical characteristics of the circuit module, since the circuit module has an extension means that can be substantially taken out of the casing in a state of being electrically connected to the main board, it is easy to measure the measurement circuit module, Furthermore, the relay means configured to be able to connect a plurality of circuit modules eliminates the need for signal measurement via the extension means in the same state as the state in which the circuit module is mounted in the actual electronic device. It is possible to provide a debugging device capable of performing accurate signal measurement while avoiding a change in the temperature and performing an extremely accurate debugging process. That. (Claim 1)

According to the debugging device of the present invention, when the extension means is constituted by a printed circuit board, the relay means is fixed in the same manner as the mounted state of the circuit module. It is possible to provide a debugging device that is held firmly and can perform extremely accurate debugging processing. (Claim 2)

According to the debugging device of the present invention, when the extension means is formed of a flexible member which is at least partially bendable, the relay means can be freely moved as required. In addition, it is possible to provide a debugging device capable of performing an accurate debugging process according to a situation. (Claim 3)

According to the debugging device of the present invention, when the relay means is constituted by a printed circuit board having connectors connectable to the circuit module on both front and back sides, the measured or non-probe circuit By mounting the measurement circuit module on the front side while the module is mounted on the back side, measurement can be performed in a mounted state where the circuit modules are substantially aligned without passing through an extension circuit,
It is possible to provide a debugging device capable of performing very accurate debugging processing. (Claim 4)

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a debugging device according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view of the debugging device shown in FIG. 1;

FIG. 3 is a schematic plan view of a debugging device according to a second embodiment.

FIG. 4 is a schematic view showing another embodiment of the circuit module.

FIG. 5 is a schematic perspective view showing an example of an electronic device to which the debugging device is applied.

FIG. 6 is a schematic diagram showing a conventional debug processing mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Debugging device 2, 32 Extension means 3, 33 Relay means 5, 6 Connector 20 Circuit module 37 Insertion part 38 Flexible part 40 Electronic device 41 Casing 42 Main board 43 Back space 44-1, 44-2, ... 44- n Circuit module

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G032 AB01 AB02 AB20 AD07 AJ01 AK03 AK05 5E344 AA01 AA08 AA28 BB01 BB06 CC23 CD18 DD07 EE06 5E348 EF46 EG01

Claims (4)

[Claims] 1. A debugging device for measuring an electrical characteristic of a circuit module which is detachably attached to a main board disposed in a casing of an electronic device and has electronic components incorporated therein, An extension unit that can take the circuit module out of the casing while being electrically connected to the main board, and a relay unit that is connected to the extension unit and configured to be connectable to the circuit module. A debugging device, comprising: 2. The debugging device according to claim 1, wherein said extension means is constituted by a printed circuit board provided with connectors at both ends. 3. The debugging device according to claim 1, wherein the extension means has connectors provided at both ends, and at least a part of the extension means is formed of a flexible member that can be bent. 4. The debugging device according to claim 1, wherein the relay unit is configured by a printed circuit board having connectors on both front and back sides to which the circuit module can be connected. Equipment.