Test device and test system

Abstract

The application relates to the field of hard disks, and particularly discloses a testing device and a testing system, the testing device comprising a shell, a testing mainboard, a control device and an automatic code scanner, the testing mainboard being arranged on the shell, a plurality of testing positions being arranged on the testing mainboard and being arranged at intervals along the width direction of the testing mainboard; the testing positions are used for mounting hard disks to be tested; the control device is mounted on the shell and is connected with the automatic code scanner; the control device drives the automatic code scanner to scan the hard disks to be tested on the testing positions one by one so as to input preset information. The application improves the hard disk testing efficiency.

Description

Technical Field

[0001] This application relates to the field of hard disks, and more particularly to a testing device and testing system. Background Technology

[0002] During hard drive testing, operators typically use a handheld barcode scanner to scan the hard drive before manually inserting it into the test motherboard. This process is slow, and manual insertion can easily lead to incorrect insertion and write errors, significantly reducing the efficiency of hard drive testing.

[0003] Therefore, improving the efficiency of hard drive testing has become an urgent problem to be solved in this field. Utility Model Content

[0004] This application discloses a testing device and a testing system, the purpose of which is to improve the efficiency of hard disk testing.

[0005] This application discloses a testing device, including a housing, a test motherboard, a control device, and an automatic barcode scanner. The test motherboard is mounted on the housing and has multiple test positions arranged at intervals along the width of the test motherboard. Each test position is used to mount a hard drive to be tested. The control device is mounted on the housing and connected to the automatic barcode scanner. The control device drives the automatic barcode scanner to scan the hard drives to be tested one by one at each test position to record preset information.

[0006] Optionally, the control device includes a lead screw motor and a support assembly. The lead screw motor is mounted on the housing, and the support assembly is connected to both the lead screw motor and the automatic barcode scanner. The lead screw motor drives the support assembly to reciprocate along the width direction of the test motherboard, thereby driving the automatic barcode scanner to move along the width direction of the test motherboard.

[0007] Optionally, the support assembly includes a first support rod and a second support rod. One end of the first support rod is connected to the lead screw motor, and the other end is connected to one end of the second support rod. The end of the second support rod away from the first support rod is connected to the automatic barcode scanner, and the first support rod is perpendicular to the second support rod. The second support rod extends the automatic barcode scanner above the position corresponding to the test position to scan the hard drive under test at the test position.

[0008] Optionally, the support assembly includes a first support rod, a second support rod, and a fixing part. The fixing part is provided with a first through hole and a second through hole. The extension direction of the first through hole is perpendicular to the extension direction of the second through hole, and the extension directions of the first through hole and the second through hole do not intersect. One end of the first support rod is connected to the lead screw motor, and the other end passes through the first through hole and is connected to the fixing part. One end of the second support rod passes through the second through hole and is connected to the fixing part. The end of the second support rod away from the first support rod is connected to the automatic barcode scanner. The fixing part can move along the extension direction of the first support rod through the first through hole. The second support rod can move along the extension direction of the second through hole through the second through hole.

[0009] Optionally, the support assembly further includes a connector, one side of which is connected to the end of the second support rod away from the first support rod, and the other side is connected to the automatic barcode scanner.

[0010] Optionally, the connector includes a first connecting plate and a second connecting plate, one side of the first connecting plate is connected to one side of the second connecting plate, and the first connecting plate is perpendicular to the second connecting plate. The first connecting plate is connected to the end of the second support rod away from the first support rod. The side of the second connecting plate opposite to the first connecting plate is connected to the automatic barcode scanner.

[0011] Optionally, the housing is further provided with a cover plate, the test motherboard includes a control area and a test area, a plurality of test positions are provided in the test area, a plurality of electronic components are provided in the control area, the cover plate is located above the test motherboard, and the orthographic projection of the cover plate on the housing covers the orthographic projection of the control area on the housing.

[0012] Optionally, the cover plate is provided with a through groove corresponding to the position of the lead screw motor, the extension direction of the through groove is the same as the movement direction of the lead screw motor, and the lead screw motor moves along the extension direction of the through groove.

[0013] Optionally, the housing has a hollow structure. The testing device further includes a first power supply, a second power supply, and a stepper motor. The first power supply, the second power supply, and the stepper motor are all disposed inside the housing. The first power supply is connected to the test motherboard and is used to supply power to the test motherboard. The second power supply is connected to the lead screw motor and is used to supply power to the lead screw motor. The stepper motor is connected to the lead screw motor and is used to control the start and stop of the lead screw motor.

[0014] This application also discloses a testing system, including a computer, and the testing system further includes the aforementioned testing device, which is connected to the computer.

[0015] This application utilizes a testing device to automatically scan the barcodes of the hard drives under test. Before testing, multiple hard drives are inserted into the corresponding test slots on the test motherboard. This ensures that each hard drive is installed in its designated test slot before the scanning begins. Then, a control device drives an automatic barcode scanner to scan each hard drive in its test slot sequentially, thereby recording the preset information for each hard drive. This "insert hard drive first, scan later" approach prevents incorrect insertion after scanning, ensuring accuracy. Furthermore, the automatic barcode scanner, controlled by the control device, reduces human error and increases testing speed, thus effectively improving hard drive testing efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They serve to demonstrate implementation methods of this application and, together with the textual description, explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic diagram of the first embodiment of the test device of this application; Figure 2 This is a schematic diagram of a second embodiment of the testing device of this application; Figure 3 This is a schematic diagram of the third embodiment of the test device of this application; Figure 4 This is a schematic diagram of the fourth embodiment of the test device of this application; Figure 5 This is a schematic diagram of one embodiment of the test system of this application.

[0017] Among them, 10 is the test system; 110 is the housing; 111 is the cover plate; 112 is the through slot; 120 is the test motherboard; 121 is the control area; 122 is the electronic component; 130 is the test area; 131 is the test position; 140 is the control device; 141 is the lead screw motor; 142 is the support assembly; 143 is the first support rod; 144 is the second support rod; 145 is the fixing part; 146 is the first through hole; 147 is the second through hole; 150 is the connector; 151 is the first connecting plate; 152 is the second connecting plate; 160 is the automatic barcode scanner; 170 is the first power supply; 180 is the second power supply; 190 is the stepper motor; 200 is the computer; and 300 is the hard disk under test. Detailed Implementation

[0018] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] Figure 1 This is a schematic diagram of the first embodiment of the test device of this application, as shown below. Figure 1 As shown in the figure, this application discloses a testing device 100, including a housing 110, a testing motherboard 120, a control device 140, and an automatic barcode scanner 160. The testing motherboard 120 is disposed on the housing 110 and has a plurality of test positions 131, which are arranged at intervals along the width direction of the testing motherboard 120. The test positions 131 are used to install the hard disk 300 under test. The control device 140 is mounted on the housing 110 and is connected to the automatic barcode scanner 160. The control device 140 drives the automatic barcode scanner 160 to scan the hard disk 300 under test on the test positions 131 one by one to record preset information.

[0020] This application utilizes a testing device 100 to perform automatic barcode scanning tests on the hard drives 300 under test. Before testing, multiple hard drives 300 under test are inserted into the corresponding test slots 131 of the testing motherboard 120, ensuring that each hard drive 300 is installed in its corresponding test slot 131 before the barcode scanning begins. Then, a control device 140 drives an automatic barcode scanner 160 to scan each hard drive 300 under test in the test slots 131 one by one, thereby sequentially recording the preset information of each hard drive 300 under test. This method of inserting the hard drive before scanning prevents incorrect insertion after scanning, ensuring the accuracy of the barcode scanning. Furthermore, the control device 140 controls the automatic barcode scanner 160 to perform automatic barcode scanning, reducing human error and increasing testing speed, thus effectively improving the testing efficiency of the hard drives.

[0021] It should be noted that, in the embodiments of this application, the hard disk under test 300 used in the testing device 100 can be a solid-state drive with M.2 interface PCIe protocol; the testing device 100 of this application can connect the hard disk under test 300 to the computer 200, and automatically start the test and write the scan information to the hard disk under test 300 by automatically scanning the SN code of the hard disk under test 300.

[0022] Specifically, the control device 140 includes a lead screw motor 141 and a support assembly 142. The lead screw motor 141 is mounted on the housing 110. The support assembly 142 is connected to the lead screw motor 141 and the automatic barcode scanner 160 respectively. The lead screw motor 141 drives the support assembly 142 to reciprocate along the width direction of the test motherboard 120, so as to drive the automatic barcode scanner 160 to move along the width direction of the test motherboard 120.

[0023] When the lead screw motor 141 is started, the support component 142 can reciprocate along the width direction of the test motherboard 120 under the drive of the lead screw motor 141, so that the support component 142 will drive the automatic barcode scanner 160 to move according to the preset path and speed.

[0024] During the movement, the automatic barcode scanner 160 scans the hard drives 300 under test at each test position 131 on the test motherboard 120, so as to transmit the barcode scanning information of each test hard drive to the computer 200. After processing by the computer 200, the test is automatically started and the scan information is written. Under the control of the lead screw motor 141, the automatic barcode scanner 160 can accurately stop at the scanning position of each hard drive 300 under test, ensuring the accuracy and stability of the barcode scanning.

[0025] Meanwhile, the lead screw motor 141 can also adjust the moving speed and moving range of the support component 142 according to actual needs; for example, when it is necessary to perform barcode scanning tests on test motherboards 120 of different specifications, the lead screw motor 141 can adjust the parameters to change the moving range of the support component 142 to adapt to different testing needs.

[0026] Furthermore, during the scanning process, if a test hard drive 300 fails to scan, the lead screw motor 141 can control the support component 142 to return to the position of the test hard drive 300 and scan again until the scan is successful.

[0027] Furthermore, the support assembly 142 includes a first support rod 143 and a second support rod 144. One end of the first support rod 143 is connected to the lead screw motor 141, and the other end is connected to one end of the second support rod 144. The end of the second support rod 144 away from the first support rod 143 is connected to the automatic barcode scanner 160, and the first support rod 143 and the second support rod 144 are perpendicular to each other. The second support rod 144 extends the automatic barcode scanner 160 to the position above the corresponding test position 131 to scan the hard disk 300 under test on the test position 131.

[0028] In this embodiment, the first support rod 143 and the second support rod 144 are vertically connected. The first support rod 143 supports the second support rod 144 at a preset height, so that the automatic barcode scanner 160 connected to the second support rod 144 can be held above each test position 131 of the test motherboard 120. The second support rod 144 extends the automatic barcode scanner 160 to the position of the corresponding test position 131. In this way, the hard disk 300 connected to the test position 131 can be accurately scanned from above the test position 131.

[0029] When the lead screw motor 141 starts, it moves and drives the first support rod 143 and the second support rod 144 to move simultaneously along the width direction of the test motherboard 120. This causes the automatic barcode scanner 160 connected to the second support rod 144 to scan the hard disks 300 under test at each test position 131 on the test motherboard 120 during the movement. This allows the barcode scanning information of each hard disk to be transmitted to the computer 200. After processing by the computer 200, the test is automatically started and the scan information is written.

[0030] Furthermore, the housing 110 has a hollow internal structure. The testing device 100 also includes a first power supply 170, a second power supply 180, and a stepper motor 190. The first power supply 170, the second power supply 180, and the stepper motor 190 are all housed inside the housing 110. The first power supply 170 is connected to the test motherboard 120 and is used to supply power to the test motherboard 120. The second power supply 180 is connected to the lead screw motor 141 and is used to supply power to the lead screw motor 141. The stepper motor 190 is connected to the lead screw motor 141 and is used to control the start and stop of the lead screw motor 141.

[0031] In this embodiment, the first power supply 170 provides stable power to the test motherboard 120, ensuring accurate performance testing of the hard drive 300 under test. The second power supply 180 provides power to the lead screw motor 141, ensuring that the lead screw motor 141 can precisely control the movement of the support assembly 142, enabling barcode scanning of the hard drive 300 under test at different positions.

[0032] The connection between the stepper motor 190 and the lead screw motor 141 is such that the start and stop of the lead screw motor 141 are determined by controlling the stepper motor 190. For example, when a new test begins, the stepper motor 190 is started, which drives the lead screw motor 141 to start working, and the support component 142 begins to move to scan the code. When a test ends or an abnormal situation is encountered, the stepper motor 190 is stopped, the lead screw motor 141 also stops, the support component 142 stops moving, and the code scanning work stops, which facilitates the replacement of the hard drive 300 under test.

[0033] Meanwhile, the first power supply 170, the second power supply 180, and the stepper motor 190 are all housed inside the housing 110. The housing 110 can provide protection, preventing external dust, moisture, and other contaminants from damaging the power supply and motor, thus extending the service life of the testing device 100 and improving its stability and reliability.

[0034] Figure 2 This is a schematic diagram of a second embodiment of the testing device of this application, as shown below. Figure 2 As shown, the support assembly 142 includes a first support rod 143, a second support rod 144, and a fixing part 145. The fixing part 145 is provided with a first through hole 146 and a second through hole 147. The extension direction of the first through hole 146 is perpendicular to the extension direction of the second through hole 147, and the extension directions of the first through hole 146 and the second through hole 147 do not intersect. One end of the first support rod 143 is connected to the lead screw motor 141, and the other end passes through the first through hole 146 and is connected to the fixing part 145. One end of the second support rod 144 passes through the second through hole 147 and is connected to the fixing part 145. The end of the second support rod 144 away from the first support rod 143 is connected to the automatic barcode scanner 160. The fixing part 145 can move along the extension direction of the first support rod 143 through the first through hole 146. The second support rod 144 can move along the extension direction of the second through hole 147 through the second through hole 147.

[0035] The difference between this embodiment and the previous embodiment is that in this embodiment, the first support rod 143 and the second support rod 144 are connected to the fixing part 145, and the relative positions of the first support rod 143 and the second support rod 144 with respect to the fixing part 145 are adjusted through the first through hole 146 and the second through hole 147 on the fixing part 145, respectively.

[0036] Before performing the barcode scanning, multiple hard drives 300 to be tested are first inserted into the corresponding test positions 131. At this time, the position of the fixing part 145 on the first support rod 143 can be adjusted, thereby adjusting the height of the second support rod 144. Since the automatic barcode scanner 160 is installed at the end of the second support rod 144, the height of the automatic barcode scanner 160 is also adjusted so that the automatic barcode scanner 160 can be positioned appropriately above the test position 131. Then, the position of the second support rod 144 relative to the fixing part 145 is adjusted so that the automatic barcode scanner 160 on the second support rod 144 can be precisely aligned with the scanning area of ​​the test position 131, thereby ensuring the subsequent normal barcode scanning operation.

[0037] In actual testing, when scanning hard drives 300 of different specifications and sizes, the operator can adjust the position of the fixing part 145 relative to the first support rod 143 and the position of the second support rod 144 relative to the fixing part 145 according to the specific situation of the hard drive 300. Through the coordinated action of the first support rod 143 and the second support rod 144, the height and horizontal position of the automatic barcode scanner 160 can be adjusted, so that the automatic barcode scanner 160 can accurately align with the scanning area of ​​the hard drive 300 under test, ensuring the smooth progress of the barcode scanning work; and it can perform barcode scanning operations on the hard drive 300 under test from different positions and angles, improving the accuracy and comprehensiveness of the barcode scanning.

[0038] Figure 3 This is a schematic diagram of the third embodiment of the test device of this application, as shown below. Figure 3 As shown, the support assembly 142 also includes a connector 150, one side of which is connected to the end of the second support rod 144 away from the first support rod 143, and the other side is connected to the automatic barcode scanner 160.

[0039] The difference between this embodiment and the previous embodiment is that in this embodiment, the ends of the automatic barcode scanner 160 and the second support rod 144 are connected by a connector 150. The automatic barcode scanner 160 can be screwed to one side of the connector 150, and the other side of the connector 150 can be screwed to the end of the second support rod 144, so that the automatic barcode scanner 160 and the end of the second support rod 144 can be detachably connected. This facilitates the installation, disassembly and maintenance of the automatic barcode scanner 160. When the automatic barcode scanner 160 malfunctions or needs to be replaced, the operator can easily remove it from the connector 150 for processing.

[0040] Specifically, the connector 150 includes a first connecting plate 151 and a second connecting plate 152. One side of the first connecting plate 151 is connected to one side of the second connecting plate 152, and the first connecting plate 151 is perpendicular to the second connecting plate 152. The first connecting plate 151 is connected to the end of the second support rod 144 away from the first support rod 143. The side of the second connecting plate 152 away from the first connecting plate 151 is connected to the automatic barcode scanner 160.

[0041] In practical use, the first connecting plate 151 and the second connecting plate 152 are connected perpendicularly to each other. On the one hand, this makes the overall structure of the connector 150 more stable, ensuring that the automatic barcode scanner 160 is not prone to shaking after being installed on the second connecting plate 152. On the other hand, since the second connecting plate 152 is perpendicular to the first connecting plate 151 in the vertical direction, when the automatic barcode scanner 160 is installed on the second connecting plate 152, the scanning port of the automatic barcode scanner 160 can be vertically downward and directly facing the scanning area of ​​the hard disk 300 to be tested, thereby improving the scanning accuracy of the automatic barcode scanner 160.

[0042] Figure 4 This is a schematic diagram of the fourth embodiment of the test device of this application, as shown below. Figure 4 As shown, a cover plate 111 is also provided on the housing 110. The test motherboard 120 includes a control area 121 and a test area 130. Multiple test positions 131 are provided in the test area 130. Multiple electronic components 122 are provided in the control area 121. The cover plate 111 is located above the test motherboard 120, and the orthographic projection of the cover plate 111 on the housing 110 covers the orthographic projection of the control area 121 on the housing 110.

[0043] The difference between this embodiment and the previous embodiment is that a cover plate 111 is added to the housing 110. The cover plate 111 is located above the test motherboard 120 to protect the electronic components 122 in the control area 121 of the test motherboard 120, and at the same time prevent external dust or foreign objects from entering and affecting the normal operation of the test motherboard 120.

[0044] Furthermore, a through groove 112 is provided on the cover plate 111 corresponding to the position of the lead screw motor 141. The extension direction of the through groove 112 is the same as the movement direction of the lead screw motor 141, and the lead screw motor 141 moves along the extension direction of the through groove 112.

[0045] Due to the design of the through slot 112, the lead screw motor 141 is not obstructed by the cover plate 111 during movement and can run smoothly along the predetermined trajectory. When the lead screw motor 141 moves in the through slot 112, the through slot 112 can also play a certain guiding role in the movement of the lead screw motor 141, reducing the possibility of the motor deviating during movement.

[0046] Meanwhile, since the through slot 112 exposes the lead screw motor 141, when the lead screw motor 141 malfunctions, the staff can directly inspect and repair it through the through slot 112 without disassembling the entire cover plate 111, thereby improving maintenance efficiency and reducing maintenance costs.

[0047] Figure 5 This is a schematic diagram of one embodiment of the testing system of this application, as shown below. Figure 5 As shown in the illustration, this application also discloses a testing system 10, including a computer 200. The testing system 10 further includes the aforementioned testing device 100, which is connected to the computer 200. After multiple hard disks 300 to be tested are connected to the computer 200 through the testing device 100, the testing automatically begins and scan information is written to the hard disks 300 to be tested.

[0048] Traditionally, when testing hard drives, operators typically use a handheld barcode scanner to scan the hard drive 300 under test before manually inserting it into the test motherboard 120 for testing. This method is slow and inefficient.

[0049] To address the aforementioned issues, this application implements automatic barcode scanning testing of the hard drives 300 under test by setting up a testing device 100 in the testing system 10. Before testing, multiple hard drives 300 under test are inserted into the corresponding test slots 131 of the testing motherboard 120, ensuring that each hard drive 300 is installed in its corresponding test slot 131 before the barcode scanning begins. Then, the control device 140 drives the automatic barcode scanner 160 to scan each hard drive 300 under test in the test slot 131 one by one, thereby sequentially recording the preset information of each hard drive 300 under test. This ensures that the hard drives are inserted before scanning, preventing incorrect insertion after scanning and guaranteeing the accuracy of the barcode scanning. Furthermore, the control device 140 controls the automatic barcode scanner 160 to perform automatic barcode scanning, reducing human error and increasing the testing speed. This effectively improves the testing efficiency of the hard drives, thereby enhancing the working efficiency of the testing system 10.

[0050] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0051] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A testing device, characterized in that, The device includes a housing, a test motherboard, a control device, and an automatic barcode scanner. The test motherboard is mounted on the housing and has multiple test positions, which are spaced apart along the width of the test motherboard. The test position is used to install the hard drive to be tested. The control device is installed on the housing and is connected to the automatic barcode scanner. The control device drives the automatic barcode scanner to scan the hard drives to be tested one by one on the test position to record preset information.

2. The testing apparatus according to claim 1, characterized in that, The control device includes a lead screw motor and a support assembly. The lead screw motor is mounted on the housing. The support assembly is connected to both the lead screw motor and the automatic barcode scanner. The lead screw motor drives the support assembly to reciprocate along the width direction of the test motherboard, thereby driving the automatic barcode scanner to move along the width direction of the test motherboard.

3. The testing apparatus according to claim 2, characterized in that, The support assembly includes a first support rod and a second support rod. One end of the first support rod is connected to the lead screw motor, and the other end is connected to one end of the second support rod. The end of the second support rod away from the first support rod is connected to the automatic barcode scanner, and the first support rod and the second support rod are perpendicular to each other. The second support rod extends the automatic barcode scanner above the position corresponding to the test position to scan the hard drive under test at the test position.

4. The testing apparatus according to claim 2, characterized in that, The support assembly includes a first support rod, a second support rod, and a fixing part. The fixing part is provided with a first through hole and a second through hole. The extension direction of the first through hole is perpendicular to the extension direction of the second through hole, and the extension directions of the first through hole and the second through hole do not intersect. One end of the first support rod is connected to the lead screw motor, and the other end passes through the first through hole and is connected to the fixing part. One end of the second support rod passes through the second through hole and is connected to the fixing part. The end of the second support rod away from the first support rod is connected to the automatic barcode scanner. The fixing part can move along the extension direction of the first support rod through the first through hole; The second support rod can move along the extension direction of the second through hole.

5. The testing apparatus according to claim 3 or 4, characterized in that, The support assembly also includes a connector, one side of which is connected to the end of the second support rod away from the first support rod, and the other side is connected to the automatic barcode scanner.

6. The testing apparatus according to claim 5, characterized in that, The connector includes a first connecting plate and a second connecting plate. One side of the first connecting plate is connected to one side of the second connecting plate, and the first connecting plate is perpendicular to the second connecting plate. The first connecting plate is connected to the end of the second support rod away from the first support rod. The side of the second connecting plate opposite to the first connecting plate is connected to the automatic barcode scanner.

7. The testing apparatus according to claim 6, characterized in that, The housing is also provided with a cover plate. The test motherboard includes a control area and a test area. Multiple test positions are arranged in the test area. Multiple electronic components are arranged in the control area. The cover plate is located above the test motherboard, and the orthographic projection of the cover plate on the housing covers the orthographic projection of the control area on the housing.

8. The testing apparatus according to claim 7, characterized in that, The cover plate is provided with a through groove corresponding to the position of the lead screw motor. The extension direction of the through groove is the same as the movement direction of the lead screw motor, and the lead screw motor moves along the extension direction of the through groove.

9. The testing apparatus according to claim 8, characterized in that, The housing has a hollow structure inside. The testing device also includes a first power supply, a second power supply, and a stepper motor. The first power supply, the second power supply, and the stepper motor are all disposed inside the housing. The first power supply is connected to the test motherboard and is used to supply power to the test motherboard. The second power supply is connected to the lead screw motor to supply power to the lead screw motor, and the stepper motor is connected to the lead screw motor to control the start and stop of the lead screw motor.

10. A testing system, comprising a computer, characterized in that, The testing system further includes a testing device as described in any one of claims 1 to 9, the testing device being connected to the computer.

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