CN201532412U

CN201532412U - Device for calibrating voltage of baseband for PHS (Personal Handy-phone System) mobile phone

Info

Publication number: CN201532412U
Application number: CN200920072358XU
Authority: CN
Inventors: 周敏
Original assignee: Shanghai Wingtech Electronic Technology Co Ltd
Current assignee: Shanghai Wingtech Electronic Technology Co Ltd
Priority date: 2009-05-15
Filing date: 2009-05-15
Publication date: 2010-07-21
Anticipated expiration: 2019-05-15

Abstract

The utility model discloses a device for calibrating the voltage of a baseband for a PHS (Personal Handy-phone System) mobile phone, which comprises a PHS mobile phone main board, a clamp, a universal meter, a program control power source and a PC, wherein the PHS mobile phone main board is arranged on the clamp and connected therewith, PHS mobile phone main boards are communicated through serial parts, the universal meter, the program control power source and the clamp are connected with the PC, and the program control power source supplies power for the PHS mobile phone main board through the clamp. The utility model improves the production efficiency and testability of the PHS mobile phone main board.

Description

A kind of device of PHS mobile phone baseband voltage calibration

Technical field

The utility model relates to a kind of mobile communication technology, particularly relates to a kind of device of PHS mobile phone baseband voltage calibration.

Background technology

PHS (Personal Handy-phone System, when personal handhold telephone system) calibrating, need to use a multimeter that base band input and output IO mouth voltage (being called for short VIO) is done calibration, guarantee that the baseband chip internal voltage value reaches normal range, for the company that produces the PHS cell phone mainboard, as when doing the VIO calibration, the words that adopt the hand-held multimeter test pencil contact of operative employee mainboard VIO test point to do, this mode of operation is very loaded down with trivial details, is unfavorable for producing very much.

The utility model content

The technical problems to be solved in the utility model is in order to overcome the defective of prior art, a kind of device of PHS mobile phone baseband voltage calibration to be provided, and it is simple to operate and be beneficial to production.

The utility model solves above-mentioned technical matters by following technical proposals: a kind of device of PHS mobile phone baseband voltage calibration, it is characterized in that, it comprises a PHS cell phone mainboard, anchor clamps, one multimeter, a programmable power supply and a PC, the PHS cell phone mainboard is positioned on the anchor clamps and with it and is connected, by serial communication, multimeter is connected with anchor clamps, PC with programmable power supply between the PHS cell phone mainboard, and programmable power supply is given the power supply of PHS cell phone mainboard by anchor clamps.

Preferably, described PC has test module, and test module is used to control the baseband voltage of described programmable power supply and calibration cell phone mainboard.

Preferably, described PC communicates by general pin interface bus with programmable power supply, multimeter respectively.

Preferably, the baseband voltage test point of described PHS cell phone mainboard links to each other with first end of anchor clamps by the test thimble on the anchor clamps, the cell voltage test point of PHS cell phone mainboard links to each other with second end of anchor clamps by the test thimble on the anchor clamps, and the earthing test point of PHS cell phone mainboard links to each other with the 3rd end of anchor clamps by the test thimble on the anchor clamps.

Preferably, the positive pole of described multimeter links to each other with first end of anchor clamps, and the negative pole of multimeter links to each other with anchor clamps the 3rd end.

Preferably, the power supply positive terminal of stating programmable power supply links to each other with second end of described anchor clamps, and programmable power supply power supply negative pole end also links to each other with the 3rd end of described anchor clamps.

Positive progressive effect of the present utility model is: the production efficiency and the testability that have improved the PHS cell phone mainboard by the utility model.

Description of drawings

Fig. 1 is the structural representation of the device of the utility model PHS mobile phone baseband voltage calibration.

Fig. 2 is the whole connection diagram of the device of the utility model PHS mobile phone baseband voltage calibration.

Fig. 3 is the process flow diagram of the step of the utility model PHS mobile phone baseband voltage calibration.

Embodiment

Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.

As depicted in figs. 1 and 2, the device of a kind of PHS mobile phone baseband of the utility model voltage calibration comprises PHS cell phone mainboard 1, anchor clamps 2, multimeter 3, programmable power supply 4 and PC 5.Test module is positioned in the described PC 5 (PC is the abbreviation of Personal Computer, and being meant can independent operating, finish the personal computer of specific function), is used to control the baseband voltage VIO of described programmable power supply 4 and calibration cell phone mainboard 1.PC 5 communicates by general pin interface bus (General-Purpose Interface Bus is called for short GPIB) with programmable power supply 4, multimeter 3 respectively, finishes by serial communication RS232 between PC 5 and the cell phone mainboard 1 and communicates by letter.

Described PHS cell phone mainboard 1 is when carrying out the baseband voltage calibration, be placed on the anchor clamps 2, the baseband voltage of cell phone mainboard 1 (VIO) test point 11 links to each other with first end 21 of anchor clamps 2 by the test thimble on the anchor clamps, the VBAT of PHS cell phone mainboard 1 (cell voltage) test point 12 links to each other with second end 22 of anchor clamps 2 by the test thimble on the anchor clamps, and the GND of PHS cell phone mainboard 1 (ground connection) test point 13 links to each other with the 3rd end 23 of anchor clamps by the test thimble on the anchor clamps 2.Described multimeter 3 positive poles link to each other with first end 21 of anchor clamps 2, and the negative pole of multimeter 3 links to each other with anchor clamps the 3rd end 23.Described programmable power supply 4 power supply positive terminals link to each other with second end 22 of described anchor clamps 2, and programmable power supply 4 power supply negative pole ends also link to each other with the 3rd end 23 of described anchor clamps, so realize giving this cell phone mainboard 1 power supply by anchor clamps 2.

The described major function that is arranged in the test module of PC 5 comprises: (1) control programmable power supply; (2) communicating by letter between control PHS cell phone mainboard and PC realizes the PHS mainboard is sent instruction, calibrates.This module is realized by following steps:

First: configure PORT COM, the VIO calibration is selected in the instrument address.

Second: by the beginning knob, at first process control programmable power supply voltage is at 3.8V in program run, and multimeter is connected to mainboard VIO test point and carries out the VIO calibration.

The 3rd: the VIO calibration finishes, and program display PASS takes off mainboard.

The utility model calibration is achieved in that and sees also the process flow diagram that Fig. 3 is the utility model calibration steps.Calibration as above-mentioned PHS mobile phone baseband voltage comprises the steps:

Step 101: the cell phone mainboard connection is placed on the test fixture;

Step 102: the first magnitude of voltage 3.8V of programmable power supply is set, directly gives cell phone mainboard;

Step 103: the positive pole of multimeter is received on the binding post of test fixture;

Step 104: start the test module in the PC, the baseband voltage VIO of calibration cell phone mainboard;

At last, after baseband voltage VIO calibration is finished, PC demonstration PASS (by), calibration finishes.

In sum, the purpose of this utility model is efficiently to produce easily by this cover PHS mobile phone baseband voltage calibration device.

Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.

Claims

1. the device of a PHS mobile phone baseband voltage calibration, it is characterized in that, it comprises a PHS cell phone mainboard, anchor clamps, one multimeter, a programmable power supply and a PC, the PHS cell phone mainboard is positioned on the anchor clamps and with it and is connected, by serial communication, multimeter is connected with anchor clamps, PC with programmable power supply between the PHS cell phone mainboard, and programmable power supply is given the power supply of PHS cell phone mainboard by anchor clamps.

2. the device of PHS mobile phone baseband voltage calibration as claimed in claim 1 is characterized in that described PC has test module, and test module is used to control the baseband voltage of described programmable power supply and calibration cell phone mainboard.

3. the device of PHS mobile phone baseband voltage calibration as claimed in claim 2 is characterized in that, described PC communicates by general pin interface bus with programmable power supply, multimeter respectively.

4. the device of PHS mobile phone baseband voltage calibration as claimed in claim 3, it is characterized in that, the baseband voltage test point of described PHS cell phone mainboard links to each other with first end of anchor clamps by the test thimble on the anchor clamps, the cell voltage test point of PHS cell phone mainboard links to each other with second end of anchor clamps by the test thimble on the anchor clamps, and the earthing test point of PHS cell phone mainboard links to each other with the 3rd end of anchor clamps by the test thimble on the anchor clamps.

5. the device of PHS mobile phone baseband voltage calibration as claimed in claim 4 is characterized in that, the positive pole of described multimeter links to each other with first end of anchor clamps, and the negative pole of multimeter links to each other with anchor clamps the 3rd end.

6. the device of PHS mobile phone baseband voltage calibration as claimed in claim 5 is characterized in that, the power supply positive terminal of described programmable power supply links to each other with second end of described anchor clamps, and programmable power supply power supply negative pole end also links to each other with the 3rd end of described anchor clamps.