CN203324326U - Usb load testing device - Google Patents
Usb load testing device Download PDFInfo
- Publication number
- CN203324326U CN203324326U CN2013203916222U CN201320391622U CN203324326U CN 203324326 U CN203324326 U CN 203324326U CN 2013203916222 U CN2013203916222 U CN 2013203916222U CN 201320391622 U CN201320391622 U CN 201320391622U CN 203324326 U CN203324326 U CN 203324326U
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- CN
- China
- Prior art keywords
- usb
- variable resistor
- module
- testing device
- resistor module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a USB load testing device used for providing a constant load current to test a USB interface of a mainboard, wherein the device mainly includes a variable-resistor module with one end being electrically connected with a USB interface to be tested; a control module used for being electrically connected with the other end of the variable-resistor module so that the resistance of the variable-resistor module is controlled to provide the constant load current to the USB interface to be tested for a test; and a display module used for displaying an input command of the control module. The utility model provides the USB load testing device in which a steady-state output of the variable-resistor module is controlled through the control module so that a precise and stable constant current output is provided.
Description
Technical field
The utility model relates to a kind of proving installation, relates in particular to a kind of USB load testing device.
Background technology
In test USB 5VSB load, still in allowed limits whether the load 5VSB of interface access 500-1300mA size that need to USB is all.But, now as all test loads of manufacturer's mades such as Tyke, all belong to the test load of passive type.That is: the resistance value in the load is fixed, and is the load current value calculated according to the assumed value of Vbus=5V, and this tool can't compensate the electric current lost in the situation of the not enough 5V of Vbus.There will be very large error while causing testing.
Summary of the invention
In view of the above problems, the utility model provides a kind of USB load testing device.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of USB load testing device, in order to the USB interface of constant load electric current with testing host to be provided, wherein, this device mainly comprises: the variable resistor module, and this variable resistor module one end and USB interface to be tested are electrically connected; Control module, in order to the resistance value that is electrically connected, controls the variable resistor module with the variable resistor module other end to provide constant load electric current to USB interface to be tested to be tested; And display module, in order to the input command of display control module.
Preferably, the utility model provides a kind of USB load testing device, and wherein, this variable resistor module comprises switch and current loading size options.
Preferably, the utility model provides a kind of USB load testing device, and wherein, described variable resistor module also comprises showing the display screen of the resistance value of variable resistor module.
Preferably, the utility model provides a kind of USB load testing device, and wherein, described USB load testing device also comprises resistance and the electric capacity that USB interface rear and to be tested parallel with one another is electrically connected.
Compared to prior art, the utility model provides a kind of USB load testing device, controls the stable state output of variable resistor module by control module, so that precise and stable steady current output to be provided.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Please refer to shown in Fig. 1, the utility model provides a kind of USB load testing device, controls the stable state output of variable resistor module by control module, so that precise and stable steady current output to be provided.
Wherein, described USB load testing device, in order to the USB interface 20 of constant load electric current with testing host to be provided, this device mainly comprises: variable resistor module 101, control module 102 and display module 103.
Again, these variable resistor module 101 1 ends and USB interface to be tested 20 are electrically connected, and this variable resistor module 101 comprises switch and current loading size options, and this current loading size options is used for the tester and selected.Described variable resistor module 101 also comprises the display screen 1011 with its electric connection, and this display screen 1011 is in order to show the resistance value of this variable resistor module 101, so that tester's range estimation can be known the resistance value that this variable resistor module 101 is current.
Described control module 102, in order to be electrically connected with variable resistor module 101 other ends, change the resistance value of variable resistor module 101 as required with input of control commands, so that constant load electric current to USB interface 20 to be tested to be provided, tested; And display module 103, in order to the input command of display control module 102.
Moreover described USB load testing device also comprises a resistance and an electric capacity (not shown), after this resistance and electric capacity are parallel with one another, with USB interface 20 to be tested, be electrically connected.
Compared to prior art, the utility model provides a kind of USB load testing device, controls the stable state output of variable resistor module 101 by control module 102, so that precise and stable steady current output to be provided.
Claims (4)
1. a USB load testing device, in order to the USB interface of constant load electric current with testing host to be provided, is characterized in that, this device mainly comprises:
The variable resistor module, this variable resistor module one end and USB interface to be tested are electrically connected;
In order to be electrically connected, to control the control module of resistance value to provide the constant load electric current to be tested to USB interface to be tested of variable resistor module with the variable resistor module other end; And
Display module in order to the input command of display control module.
2. USB load testing device according to claim 1, is characterized in that, this variable resistor module comprises switch and current loading size options.
3. USB load testing device according to claim 1, is characterized in that, described variable resistor module also comprises showing the display screen of the resistance value of variable resistor module.
4. USB load testing device according to claim 1, is characterized in that, described USB load testing device also comprises resistance and the electric capacity that USB interface rear and to be tested parallel with one another is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203916222U CN203324326U (en) | 2013-07-01 | 2013-07-01 | Usb load testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203916222U CN203324326U (en) | 2013-07-01 | 2013-07-01 | Usb load testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203324326U true CN203324326U (en) | 2013-12-04 |
Family
ID=49663664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203916222U Expired - Fee Related CN203324326U (en) | 2013-07-01 | 2013-07-01 | Usb load testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203324326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154083A (en) * | 2016-06-20 | 2016-11-23 | 西可通信技术设备（河源）有限公司 | A kind of USB interface load testing device |
| WO2021051104A1 (en) * | 2019-09-12 | 2021-03-18 | Blancco Technology Group IP Oy | System and method for direct device communication with diagnostics and provisioning |
-
2013
- 2013-07-01 CN CN2013203916222U patent/CN203324326U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154083A (en) * | 2016-06-20 | 2016-11-23 | 西可通信技术设备（河源）有限公司 | A kind of USB interface load testing device |
| WO2021051104A1 (en) * | 2019-09-12 | 2021-03-18 | Blancco Technology Group IP Oy | System and method for direct device communication with diagnostics and provisioning |
| US11748296B2 (en) | 2019-09-12 | 2023-09-05 | Blancco Technology Group IP Oy | System and method for direct device communication with diagnostics and provisioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20150701 |
|
| EXPY | Termination of patent right or utility model |