CN215066990U - Startup and shutdown test instrument - Google Patents

Abstract

The utility model provides a switching on and shutting down test instrument, this switching on and shutting down test instrument include the box. An alternating current input interface is arranged at the end part of the rear panel close to the first side plate. And the alternating current relay and the power supply module are arranged on the bottom plate side by side, and the alternating current input interface is electrically connected with the alternating current relay and the power supply module. The control panel is stacked on the alternating current relay and the power module, the control panel is fixed on the bottom plate through the first support, the control panel is arranged close to the front panel, and the control panel is electrically connected with the alternating current relay and the power module. The power strip is fixed on the bottom plate and the rear panel through a second support and is arranged close to the second side plate; the extension socket is electrically connected with the alternating current input interface and the alternating current relay, and the socket of the extension socket is exposed out of the top plate. The startup and shutdown test instrument has the advantages of reasonable and compact layout of internal devices, small volume, high reliability and long service life, and can simultaneously supply power to a plurality of devices to be tested.

Description

Startup and shutdown test instrument

Technical Field

The utility model relates to an electricity test technical field especially relates to a switching on and shutting down test instrument.

Background

In the development process of electronic and electrical products, a series of reliability tests are often required to be performed on products, power supplies or circuits and separating components for repeated on-off tests and waiting for testing equipment. For example, a power strip power-on/off impact test, a reset test, a snap test, etc. Among them, the repeated power on/off test is a very important reliability test item for the device under test. At present, the repeated on-off test of the device to be tested (such as electronic equipment, power supply or circuits and separated components requiring repeated on-off test) usually adopts manual test or single board test. Generally, the number of repeated startup and shutdown tests is hundreds of times, and the number of repeated startup and shutdown tests is tens of thousands of times, so that the manual test is complex in operation and low in efficiency. And adopt the veneer test, need the manual work to build test environment, and because the test mainboard exposes in external environment, very easily receives external environment's interference, stability, reliability are poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a startup and shutdown test instrument, which can reliably and stably perform electrical test on equipment to be tested, and prolong the service life of the startup and shutdown test instrument; the layout of devices in the on-off test instrument is more reasonable and compact through the laminated design, the placement density of the devices in the on-off test instrument is improved, and the volume of the on-off test instrument is smaller; and can simultaneously supply power to a plurality of devices to be tested.

The utility model provides a switching on and shutting down test instrument, this switching on and shutting down test instrument include a box, and this box has relative front panel and rear panel, relative roof and bottom plate and relative first curb plate and second curb plate. An alternating current input interface is arranged at the end part of the rear panel close to the first side plate. And the alternating current relay and the power supply module are arranged on the bottom plate side by side, and the alternating current input interface is electrically connected with the alternating current relay and the power supply module. Still range upon range of on alternating current relay and power module has the control panel, and the control panel passes through first support to be fixed on the bottom plate, and the control panel is close to the front panel setting, and the control panel is connected with alternating current relay and power module electricity all. The power on/off test instrument further comprises a power strip, wherein the power strip is fixed on the bottom plate and the rear panel through a second support and is arranged close to the second side plate; the extension socket is electrically connected with the alternating current input interface and the alternating current relay, and the socket of the extension socket is exposed out of the top plate.

In the scheme, the control board, the alternating current relay and the power supply module are arranged in the box body, so that the box body protects each functional module, the reliability of the on-off test instrument is improved, the service life of the on-off test instrument is prolonged, and the electrical test is reliably and stably carried out on the equipment to be tested. Through arranging AC relay and power module side by side on the bottom plate, control panel and row insert and place the top position at the box to two-layer device mode of arranging about forming in the box makes the device overall arrangement in the switching on and shutting down test instrument more reasonable, improves the density of placing of the inside device of switching on and shutting down test instrument, makes the volume of switching on and shutting down test instrument less. And still insert through setting up the row, can supply power to a plurality of equipment under test simultaneously. Meanwhile, the alternating current input interface is convenient to be connected with the alternating current relay and the power module in a wiring mode.

In a specific embodiment, the on/off test apparatus further includes a dc input interface and a dc output interface disposed on the rear panel and arranged side by side, and both the dc input interface and the dc output interface are located between the bottom of the extension socket and the bottom plate. The startup and shutdown testing instrument further comprises a direct current relay arranged at the end part position, close to the second side plate, of the bottom plate, the direct current relay is electrically connected with the control plate, the direct current input interface and the direct current output interface, and the direct current relay, the alternating current relay and the power supply module are arranged side by side. The power supply device has the advantages that the power supply device can supply direct current to the equipment to be tested, meanwhile, the direct current input interface and the direct current output interface are connected with the direct current relay and the control panel in a wiring mode, the direct current relay, the alternating current relay and the power module are more reasonable in layout, the placement density of devices inside the power supply device is improved, and the size of the power supply device is smaller.

In a specific embodiment, the rear panel is further provided with a debugging serial port for connecting with an upper computer plug, the debugging serial port is electrically connected with the control board, and the debugging serial port, the direct current input interface and the direct current output interface are arranged side by side. Can realize being connected between on & off test instrument and the host computer, be convenient for simultaneously debug the inside between serial ports and the control panel and walk the line and be connected.

In one embodiment, the power on/off test instrument further includes a signal lamp and a key board disposed on the front panel and electrically connected to the control board, and the signal lamp and the key on the signal lamp and the key board are exposed outside the front panel. Wherein, the control panel is located the tip position that is close to first curb plate, and signal lamp and keypad all are located the tip position that is close to the second curb plate, make signal lamp and keypad and control panel all be close to the front panel setting, and lie in the left and right sides of front panel respectively, improve the density of placing of the inside device of switching on and shutting down test instrument, the line connection of being convenient for simultaneously control panel and signal lamp and keypad.

In a specific embodiment, the on/off test instrument further includes a display screen disposed on the front panel and above the signal lamps and the key board, the display screen is electrically connected to the control board, and a screen of the display screen is exposed outside the front panel. The display screen, the signal lamp and the key board are arranged up and down, the arrangement density of each area of the front panel is improved, and meanwhile, the display screen and the control board are convenient to connect in a wiring mode.

In a specific embodiment, the front panel is further provided with a GPI interface and a GPO interface arranged side by side, and the GPI interface and the GPO interface are located between the control board and the backplane. The GPI interface is electrically connected with the signal lamp and the key board, and the GPO interface is electrically connected with the control board. And the GPI interface, the GPO interface and the control panel are convenient to be connected in a wiring way.

In a specific implementation manner, the control panel is further provided with an RS232 interface, an RS485 interface and an FP interface for being plugged with the device to be tested, the RS232 interface, the RS485 interface and the FP interface are all exposed out of the front panel, and the RS232 interface, the RS485 interface and the FP interface are arranged above the GPI interface and the GPO interface side by side. The RS232 interface, the RS485 interface and the FP interface are conveniently exposed out of the front panel from the control panel.

In a specific embodiment, a plurality of foot pads for supporting the box body are further arranged on the bottom plate, wherein each foot pad comprises a metal framework fixed on the bottom plate and a rubber shell wrapped on the surface of the metal framework. The bottom surface of the protective box body is not scratched, and the on-off testing instrument is supported and lifted, so that the operation and the use are convenient.

In a specific embodiment, the end portions of the first side plate and the second side plate close to the front panel are provided with heat dissipation holes, and the heat dissipation holes are located between the control plate and the bottom plate, so that the internal relay, the power module and the control plate are located between the heat dissipation holes on the two side plates, and the heat dissipation efficiency is improved.

In a specific implementation mode, the front panel, the rear panel, the top plate, the bottom plate, the first side plate, the second side plate, the first support and the second support are all made of aluminum alloy, the protection effect of the box body is improved, the quality of the box body is reduced, and the quality of the whole startup and shutdown test instrument is further reduced.

Drawings

Fig. 1 is a schematic external structural diagram of a startup and shutdown testing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an internal device of an on/off test apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rear panel of an on/off test instrument according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a front surface of a front panel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a back surface of a front panel according to an embodiment of the present invention;

fig. 6 is an electrical connection schematic diagram of a startup and shutdown test instrument according to an embodiment of the present invention.

Reference numerals:

11-front panel 12-rear panel 13-top panel 14-bottom panel 15-first side panel

16-second side plate 17-foot pad 18-heat dissipation hole 21-alternating current input interface

22-alternating current relay 23-power module 24-control board 25-extension socket

26-DC Relay 27-DC input interface 28-DC output interface

29-debugging serial port 30-signal lamp and key board 31-display screen 32-GPI interface

33-GPO interface 34-RS232 interface 35-RS485 interface 36-FP interface

41-first bracket 42-second bracket 43-nameplate 44-ground screw

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

For convenient understanding the utility model provides a switching on and shutting down test instrument, first explain below the utility model provides a switching on and shutting down test instrument's application scene, this switching on and shutting down test instrument is used for testing the electricity to electronic equipment such as cell-phone, notebook. The on/off test apparatus is described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, an on/off testing apparatus according to an embodiment of the present invention includes a casing having a front panel 11 and a rear panel 12 opposite to each other, a top panel 13 and a bottom panel 14 opposite to each other, and a first side panel 15 and a second side panel 16 opposite to each other. Specifically, the box body can be assembled by a front panel 11, a rear panel 12, a top panel 13, a bottom panel 14 and two side panels in a screw connection mode, so that a closed box body is formed to protect each functional module arranged in the box body. The material that can make front panel 11, rear panel 12, roof 13, bottom plate 14, first curb plate 15, second curb plate 16 is the aluminum alloy, utilizes the advantage that aluminum alloy density is little, intensity is high, improves the protection effect of box, alleviates the quality of box simultaneously, and then alleviates the quality of whole switching on and shutting down test instrument, and the switching on and shutting down test instrument of being convenient for removes.

Referring to fig. 2 and 3, an ac input interface 21 is disposed on the end portion of the rear panel 12 near the first side plate 15, and serves as an interface for supplying ac power to the on/off test apparatus from the outside. A national standard three-jack socket may be used as the ac input interface 21 to facilitate a plug connection with a standard conventional three-jack plug. As shown in fig. 2, the ac relay 22 and the power module 23 are arranged side by side on the base plate 14, and specifically, the ac relay 22 and the power module 23 may be fixed to the base plate 14 by a screw fastening method. A control board 24 is further stacked on the ac relay 22 and the power module 23, the control board 24 is fixed to the base plate 14 by a first bracket 41, and the control board 24 is disposed adjacent to the front panel 11. That is, the control board 24 is separated from the bottom plate 14 by the first bracket 41, and the ac relay 22 and the power module 23 are positioned between the control board 24 and the bottom plate 14, thereby forming a stacked arrangement. Referring to fig. 2, a patch panel 25 is further disposed in the box, and the patch panel 25 is fixed on the bottom plate 14 and the rear panel 12 through a second bracket 42, so that the patch panel 25 is separated from the bottom plate 14, and various interfaces disposed on the bottom plate 14 are connected to each functional module in the box for routing. And the extension socket 25 is arranged close to the second side plate 16, and the socket of the extension socket 25 is exposed out of the top plate 13, so that the extension socket 25 and the alternating current input interface 21 are arranged left and right. Arrange side by side on bottom plate 14 through exchange relay 22 and power module 23 promptly, control panel 24 and row insert 25 and place the top position at the box, exchange input interface 21 and set up the tip position of being close to first curb plate 15, arrange and insert 25 and place the tip position of being close to second curb plate 16, thereby two-layer device mode of arranging about forming in the box, it is more reasonable to make the device overall arrangement in the switching on and shutting test instrument, improve the density of placing of the inside device of switching on and shutting test instrument, make the volume of switching on and shutting test instrument less. In addition, the control board 24, the alternating current relay 22 and the power supply module 23 are all arranged in the box body, so that the box body protects each functional module, the reliability of the on-off test instrument is improved, the service life of the on-off test instrument is prolonged, and the electrical test on the equipment to be tested is reliably and stably carried out.

When the first and second brackets 41 and 42 are provided, the two brackets may include support legs fixed to the base plate 14 and support frames connected to the support legs, and the control panel 24 and the extension socket 25 may be fixed to the corresponding support frames, respectively. Aluminum alloy can be used as the material for manufacturing the first bracket 41 and the second bracket 42, so as to reduce the mass of the two brackets, and further reduce the mass of the whole on-off test instrument.

Referring to fig. 1, 2 and 6, the ac input interface 21 is electrically connected to both the ac relay 22 and the power module 23, the control board 24 is electrically connected to both the ac relay 22 and the power module 23, and the extension socket 25 is electrically connected to both the ac input interface 21 and the ac relay 22. One part of the alternating current input passes through the alternating current relay 22 and then is output to the extension socket 25, and the control panel 24 controls the on-off of the alternating current relay 22; the other part is converted into 12V direct current power supply through the power supply module 23 to supply power to the control board 24. A plurality of devices under test can be powered simultaneously by the patch panel 25. When the functional modules are electrically connected, the wires electrically connecting the ac input interface 21, the ac relay 22, the power module 23, and the control board 24 may be routed from the lower side of the first bracket 41, so that the ac input interface 21 is connected to the wires of the ac relay 22 and the power module 23.

Referring to fig. 2, 3 and 6, the rear panel 12 may further be provided with a dc input interface 27 and a dc output interface 28 arranged side by side, and both the dc input interface 27 and the dc output interface 28 are located between the bottom of the extension socket 25 and the bottom plate 14. A dc relay 26 may be further disposed at an end position of the bottom plate 14 close to the second side plate 16, the dc relay 26 is electrically connected to the control board 24, the dc input interface 27 and the dc output interface 28, and the dc relay 26, the ac relay 22 and the power module 23 are arranged side by side, that is, the dc relay 26, the ac relay 22 and the power module 23 are sequentially arranged from the end position of the second side plate 16 to the first side plate 15, which may also make the dc relay 26 fixed on the bottom plate 14 by a screw fastening method. The switching test instrument can perform direct current power supply on the equipment to be tested, and meanwhile, the wires for connecting the direct current input interface 27, the direct current output interface 28, the direct current relay 26 and the control panel 24 penetrate through the lower portion of the second support 42, so that the direct current input interface 27 and the direct current output interface 28 are conveniently connected with the direct current relay 26 and the control panel 24 through wiring, the direct current relay 26, the alternating current relay 22 and the power module 23 are more reasonable in layout, the placement density of internal devices of the switching test instrument is improved, and the volume of the switching test instrument is smaller. In a specific arrangement, referring to fig. 3, terminals may be used as the dc input interface 27 and the dc output interface 28, respectively. In specific connection, referring to fig. 6, the positive lead of the dc input interface 27 may pass through the dc relay 26 and then be output to the dc output interface 28, and the control board 24 controls the dc relay 26 to turn on or off.

Referring to fig. 3 and 6, a debugging serial port 29 for plug-in connection with the upper computer may also be provided on the back panel 12, the debugging serial port 29 is electrically connected with the control board 24, and the debugging serial port 29, the dc input interface 27 and the dc output interface 28 are arranged side by side. When the control board 24 and the debugging serial port 29 are connected specifically, a wire for connecting the debugging serial port 29 and the control board 24 can pass through the lower part of the second support 42, so that the internal wiring between the debugging serial port 29 and the control board 24 is connected, and meanwhile, the connection between the on-off test instrument and an upper computer can be realized.

In addition, the control board 24 includes a logic circuit for implementing functions and a connector for external control, in addition to controlling the on/off of the ac part and the dc part. For example, referring to fig. 1, 4, 5 and 6, a signal light and key board 30 electrically connected to the control board 24 may be provided on the front panel 11, and the signal light and the keys on the signal light and key board 30 are exposed outside the front panel 11. That is, a portion of the signal light and key sheet 30 communicates with the control board 24 and is controlled by the control board 24. Referring to fig. 5, the signaling and key sheet 30 may be fixed to the front panel 11 by a screw connection. Can place control panel 24 at the tip position who is close to first curb plate 15, and signal lamp and keypad 30 are placed at the tip position who is close to second curb plate 16, make signal lamp and keypad 30 and control panel 24 all be close to front panel 11 and set up, and lie in the left and right sides of front panel 11 respectively, improve the density of placing of the inside device of switching on and shutting down test instrument, the line connection of being convenient for simultaneously control panel 24 and signal lamp and keypad 30.

As shown in fig. 1, 4, 5 and 6, a display screen 31 may be disposed on the front panel 11, the display screen 31 is electrically connected to the control board 24, signals are communicated between the control board 24 and the display screen 31, and the control board 24 controls signal output of the display screen 31. The screen of the display screen 31 is exposed out of the front panel 11, and the display screen 31 is arranged above the signal lamp and key board 30, so that the display screen 31, the signal lamp and the key board 30 are arranged up and down, the arrangement density of each area of the front panel 11 is improved, and meanwhile, the display screen 31 is convenient to connect with the control board 24 through wiring. Referring to fig. 5, the display screen 31 may be fixed to the front panel 11 by means of a screw connection.

Referring to fig. 1, 4, 5 and 6, a GPI interface 32 and a GPO interface 33 may be arranged side by side on the front panel 11, and the GPI interface 32 and the GPO interface 33 are located between the control board 24 and the backplane 14. The GPI interface 32 is electrically connected to the signal lamp and key board 30, and the GPO interface 33 is electrically connected to the control board 24, that is, the other part of the signal lamp and key board 30 is controlled by the input signal of the device to be tested through the GPI interface 32. In specific electrical connection, wires for connecting the GPI interface 32 and the GPO interface 33 and the control board 24 can pass through the lower portion of the first bracket 41, which facilitates the routing connection between the GPI interface 32 and the GPO interface 33 and the control board 24. The phoenix terminal 5P may be used as the GPI interface 32 and the phoenix terminal 3P may be used as the GPO interface 33. Referring to fig. 5, the GPI interface 32 and the GPO interface 33 may be fixed to the front panel 11 by a screw connection.

Referring to fig. 1, 4, 5, and 6, an RS232 interface 34, an RS485 interface 35, and an FP interface 36 for plugging with a device to be tested may be further disposed on the control board 24, the RS232 interface 34, the RS485 interface 35, and the FP interface 36 are all exposed on the front panel 11, and the RS232 interface 34, the RS485 interface 35, and the FP interface 36 are arranged above the GPI interface 32 and the GPO interface 33 in parallel. The RS232 interface 34, the RS485 interface 35 and the FP interface 36 are exposed from the control board 24 to the outside of the front panel 11. An RJ45 interface may be used as the RS232 interface 34, a phoenix terminal 4P as the FP interface 36, and a phoenix terminal 3P as the RS485 interface 35. Referring to fig. 6, the control board 24 performs signal intercommunication with the device to be tested and the upper computer through the onboard output interfaces (the RS232 interface 34, the RS485 interface 35, and the FP interface 36) on the control board, the GPI interface 32, and the GPO interface 33, and implements a test function. When the test is carried out, if the serial port function is needed, the serial port of the device to be tested is connected to the RS232 interface 34 or the RS485 interface 35 of the startup and shutdown test instrument, and one of the serial port and the RS232 interface is selected. When the switching on and off and resetting functions are used, the FP interface 36 of the device to be tested is connected to the FP interface 36 of the switching on and off test instrument, and the tests of PWRBTN and RESET are realized. Therefore, the on-off test instrument can realize four test functions: power on-off test, PWRBTN on-off test, reset test and instantaneous interruption test. The required test can be selected and performed by pressing keys according to the information displayed by the signal lamp and the display screen 31.

Referring to fig. 1 and 3, a plurality of foot pads 17 for supporting the box body may be further disposed on the bottom plate 14, wherein each foot pad 17 includes a metal framework fixed on the bottom plate 14 and a rubber casing wrapped on the surface of the metal framework. The bottom surface of the box body is protected from being scratched, the on-off testing instrument is supported and lifted, and the operation and the use are convenient.

Referring to fig. 2, heat dissipation holes 18 may be further disposed at end portions of the first side plate 15 and the second side plate 16 close to the front panel 11, and the heat dissipation holes 18 are located between the control board 24 and the bottom plate 14, so that the internal relay, the power module 23, and the control board 24 are located between the heat dissipation holes 18 on the two side plates, and the heat dissipation efficiency is improved. Namely, the whole machine can directly radiate heat through the box body and the radiating holes 18, so that the whole machine can meet the radiating requirement by adopting a fanless radiating mode, and the sealing performance of the whole machine are improved.

In addition, referring to fig. 3, a nameplate 43 may be further disposed on the back panel 12, and the nameplate 43 is located above the dc input interface 27 and the dc output interface 28. As shown in fig. 3, a ground screw 44 may be provided on the rear panel 12, and the ground screw 44 may be arranged side by side with the dc input interface 27, the dc output interface 28, and the debug serial port 29.

The control board 24, the alternating current relay 22 and the power supply module 23 are arranged in the box body, so that the box body protects each functional module, the reliability of the on-off test instrument is improved, the service life of the on-off test instrument is prolonged, and the electrical test is reliably and stably carried out on the equipment to be tested. Through arranging AC relay 22 and power module 23 side by side on bottom plate 14, control panel 24 and row insert 25 place the top position at the box to two-layer device arrangement mode about forming in the box makes the device overall arrangement in the switching on and shutting down test instrument more reasonable, improves the density of placing of the inside device of switching on and shutting down test instrument, makes the volume of switching on and shutting down test instrument less. And also through setting up row and inserting 25, can supply power to a plurality of await measuring equipment simultaneously. Meanwhile, the AC input interface 21 is convenient to be connected with the AC relay 22 and the power module 23 through wires.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An on/off test instrument, comprising:

a box having opposing front and rear panels, opposing top and bottom panels, and opposing first and second side panels;

the alternating current input interface is arranged at the position, close to the end part of the first side plate, on the rear panel;

the alternating current relay and the power supply module are arranged on the bottom plate side by side, wherein the alternating current input interface is electrically connected with the alternating current relay and the power supply module;

the control panel is stacked on the alternating current relay and the power supply module, is fixed on the bottom plate through a first support, is arranged close to the front panel, and is electrically connected with the alternating current relay and the power supply module;

the extension socket is fixed on the bottom plate and the rear panel through a second support and is arranged close to the second side plate; the extension socket is electrically connected with the alternating current input interface and the alternating current relay, and the socket of the extension socket is exposed out of the top plate.

2. The power on/off test apparatus of claim 1, further comprising:

the direct current input interface and the direct current output interface are arranged on the rear panel in parallel, and are positioned between the bottom of the extension socket and the bottom plate;

the direct current relay is arranged at the position, close to the end part of the second side plate, on the bottom plate, the direct current relay is electrically connected with the control panel, the direct current input interface and the direct current output interface, and the direct current relay, the alternating current relay and the power supply module are arranged side by side.

3. The startup and shutdown test instrument according to claim 2, wherein a debugging serial port for being connected with an upper computer in a plugging manner is further arranged on the rear panel, the debugging serial port is electrically connected with the control board, and the debugging serial port, the direct current input interface and the direct current output interface are arranged side by side.

4. The power on/off test apparatus of claim 1, further comprising:

the signal lamp and the key board are arranged on the front panel and electrically connected with the control panel, and the signal lamp and the key on the signal lamp and the key board are exposed out of the front panel;

the control panel is located at the end part position close to the first side plate, and the signal lamp and the key plate are located at the end part position close to the second side plate.

5. The power on/off test apparatus of claim 4, further comprising:

the display screen is arranged on the front panel and arranged above the signal lamp and the key board, the display screen is electrically connected with the control board, and the screen of the display screen is exposed out of the front panel.

6. The on-off test instrument as claimed in claim 4, wherein the front panel further has a GPI interface and a GPO interface arranged side by side, and the GPI interface and the GPO interface are located between the control board and the backplane;

the GPI interface is electrically connected with the signal lamp and the key board, and the GPO interface is electrically connected with the control board.

7. The on-off test instrument as claimed in claim 6, wherein the control board further has an RS232 interface, an RS485 interface and an FP interface for being plugged into the device under test and exposed outside the front panel, and the RS232 interface, the RS485 interface and the FP interface are arranged side by side above the GPI interface and the GPO interface.

8. The on/off test apparatus of claim 1, wherein the base plate further comprises a plurality of foot pads for supporting the box, wherein each foot pad comprises a metal framework fixed on the base plate and a rubber casing wrapped on a surface of the metal framework.

9. The apparatus according to claim 1, wherein heat dissipation holes are disposed at end portions of the first side plate and the second side plate close to the front panel, and the heat dissipation holes are disposed between the control board and the bottom plate.

10. The on-off testing apparatus of claim 1, wherein the front panel, the rear panel, the top plate, the bottom plate, the first side plate, the second side plate, the first bracket and the second bracket are made of aluminum alloy.

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