蓝牙耳机生产测试方法及标准.docx

1、蓝牙耳机生产测试方法及标准Product nameConfidentiality levelBluetooth HeadsetOpenProduct versionTotal 16 pagesDraftProduct Test Specification forBluetooth HeadsetPrepared byLishuzhengDate2013-12-13Reviewed byDateApproved byDateAuthorized byDatefor internal use onlyChange HistoryDateVer.DescriptionAuthor2013/12/13

2、DraftInitial versionLishuzhengContents Tables1Test Procedure 61.1Station 1 Module Download 61.2Station 2 Module functional test (Freq trim, PIO, AIO, voltage and current)61.3Station 3 Module RF Test (Conducted test) 71.4Station 4 Main Board PCBA functional test(PIO AIO, voltage and current) . 71.5St

3、ation 5 Main board PCBA RF test(conducted test) 81.6Station 6 Main board PCBA RF test(Coupling test) 91.7Station 7 Acoustic test after casing 91.8Station 8 Product RF Sensitivity Test 102Specification 112.1Station I Module Download 112.2Station 2 Module functional test (Freq trim, PIO, AIO, voltage

4、and current)112.3Station 3 Module RF Test (conducted test) 112.4Station 4 Main Board PCBA Functional test (PIO,AIO, voltage an current) . 122.5Station 5 Main Board PCBA RF Test (conducted test) 122.6Station 6 Main Board PCBA RF Test (coupling test ) 132.7Station 7 Acoustic test after casing 142.8Sta

5、tion 8 Product RF Sensitivity Test 153Product Specification Electrical Parameters checklist 153.1Current test 153.2Audio test 153.3Acoustic test 163.4Range test 163.5Power management 163.6Other 16Word 资料Product Test SpecificationKey words ： Bluetooth Headset, PCBA, RF test, AcousticSummary： The test

6、 specification for Function, RF test, PCBA test and acoustic testReference ListReference ListNameAuthorNoDatePositionPress1Test ProcedureBefore start ATE, engineer should check and enter appropriate values in setting environment.Manual SettingsSoftware version number, eg “20131213 ”Upper and lower l

7、imit for each test items Started and stopped Bluetooth address rangeRF test probe and cable lost for calibration and compensationStation RequirementIn each station, ATE need to read, compare and display the software version number, which is stored in PS Key 0x02B6. It is a 16 bits, 4 digits BCD, eg

8、“6AA5”All test items should display on the screenEach production day have a log file for each station. Each log file includes all samples serial no or BT address with corresponding testing data. The file is in ASCII format. Each test item placed in one column. File name must include the station no,

9、date and time for reference.1.1Station 1 Module Download- Measure current consumption at 3.3V- Download and verify the software (include application and test mode, or test mode only)1.2Station 2 Module functional test (Freq trim, PIO, AIO, voltage and current)Check current consumption- Feed a 3.3V s

10、upply to the 3.3V input. Measure the 3.3V input current and measure the voltage at 1.8V output from the module. Save the current and voltage to log fileFrequency trim- Control the DUT to transmit a CW at Channel 39(2441 MHz), adjust the Crystal frequency trim value to meet the target. Write the corr

11、ect value into PS key 0x01F6 (e.g. 0x0026), then reset DUT and verify. Save the value in log fileCheck PIO and AlO- Input the PIO(0-10) pins 0101 0101 0101, read the logic from PIO and verify.- Repeat the above and invert the lo 舒 c (1010 1010 1010). read the logic from PlOand verify.Save the result

12、 to log file- Input the AIO(O-I) pins at l.5V(dont I.75V), read the level form AlO and verify. Save the readings to log fileCheck Audio pathSet DUT into PCM Loopback mode. Feed 1 kHz, 5mVrms to mic input and measure, the speaker output level. Save the speaker level to log file1.3Station 3 Module RF

13、Test (Conducted test)- Enable the DUT to enter Bluetooth Test Mode by using RFCLI.EXE command- Set the measuring condition of E1852B according the following setting.RF Test(Conducted)Transmitter testConditions:- Carrier: 0- Packet type: DHI- Packet length: 27- Poll period: 10- RF level: -50dBm- Data

14、 for delta F2: BS55(10101010)- Data for delta Fl: BSOF(00001111)- Meas. Averaging factor: 100 (may be less for fast respond)- Coupling loss: 0dBMeasure:- Average Power- Freq. Offset- Freq. Drift- Freq. Drift/ Rate- Avg, Delta F2 max- Avg, Delta F1 max- Packet Error Rate (PER)- Bit Error Rate (BER)Lo

15、opback TestConditions:- Whitening: Enable- RF level: -75dBm- Modulation index : 0.32- No. of bits: 10000Measure:- Bit Error Ratc (BER)- Packet Error Rate (PER)Repeat the above test for Carrier 39, 781.4Station 4 Main Board PCBA Functional test (PIO AIO, voltage and current)Supply 3.7V to the BAT+ to

16、 GNDCheck PlO and AIOInput different logic to PIO(0-11)when there are test pad, read all PIO and verify. For BT HS Clip:- PIO( 8, 10,) is DONT CARE- Only test pads for PlO (9).- The logic of PIO(6) is inverted. its test pads is MFB- Read and verify AIO(0). AIO(1) is Dont Care.For BT Radio:- TBDCheck

17、 Audio pathSet the DUT to PCM loopback mode. Feed lkHz, 5mVrms to mic input and measure the level from the speaker output.Check current consumptionMeasure Off Current- Reset DUT, measure the input current at 3.7VMeasure Standby Current- Enable DUT to Receive mode (RXSTARTI at 2442MHz).- McaSUrc the

18、input current at 3.7VMeasure Operation Current- Enable DUT to transmit mode (TXSTART at 2442MHz).- Measure the input current at 3.7V.Measure Charging Current- Connect a Electronic Load to BAT+ to GND. Set the E-Ioad to draw constant current of 75mA. Feed 5V to DC+ to GND. Measure the current at 5V.1

19、.5Station 5 Main board PCBA RF test (conducted test)RF Test (conducted)Transmitter testConditions:- Carrier: 0- Packet type: DHI- Packet length: 27- Poll period: 10- RF level: -50dBm- Data for delta F2: BS55(10101010)- Data for delta Fl: BSOF(00001111)- Meas. Averaging factor: 100 (may be less for f

20、ast respond)- Coupling loss: 0dBMeasure:- Average Power- Freq. Offset- Freq. Drift- Freq. Drift/ Rate- Avg, Delta F2 max- Avg, Delta F1 max- Packet Error Rate (PER)- Bit Error Rate (BER)Loopback Test Conditions:- Whitening: Enable- RF level: -75dBm- Modulation index : 0.32- No. of bits: 10000Measure

21、:- Bit Error Ratc (BER)- Packet Error Rate (PER)Repeat the above test for Carrier 39, 781.6Station 6 Main board PCBA RF test(Coupling test)- Test items may be decreased in the future.RF Test couplingFixture and DUT must be in Shield Box.Transmitter testConditions:- Carrier: 0- Packet type: DHI- Pack

22、et length: 27- Poll period: 10- RF level: -50dBm- Data for delta F2: BS55(10101010)- Data for delta Fl: BSOF(00001111)- Meas. Averaging factor: 100 (may be less for fast respond)- Coupling loss: 0dBMeasure:- Average Power- Freq. Offset- Freq. Drift- Freq. Drift/ Rate- Avg, Delta F2 max- Avg, Delta F

23、1 max- Packet Error Rate (PER)- Bit Error Rate (BER)Loopback TestConditions:- Whitening: Enable- RF level: -75dBm- Modulation index : 0.32- No. of bits: 10000Measure:- Bit Error Rate (BER)- Packet Error Rate (PER)Repeat the above test for Carrier 39, 78Write PS Key to flash memory- After all tested

24、items are PASS:- Write a unique 48 bits Bluetooth address into PS Key Ox0001.- Write Ox000 to PS Key OxOIF9 (Set Host Interface to No Host)- Write Ox000 to PS Key Ox025D (Enable VM)1.7Station 7 Acoustic test after casing1. Setting the Battery voltage t0 4.10V-4.24V, adjust the Charger voltage Trim v

25、alue to meet the target. Write the correct value into PS Key 0x03b7 , then reset DUT andverify.Save the value in log fileSetting charging voltage to 5V,2. The voltage of VBAT pin must be within 3.8-4.6V without battery.Acoustic Test- Testing must be in shield room and silent room.- After casing asse

26、mbly, use Casira for Audio Gateway. Pairing the BT headset and carryout acoustic test. Measure TX and RX loudness and1.8Station 8 Product RF Sensitivity TestProduct RF sensitivity Loss Comp - Apply Loss Compensation ”V”-Fix Loss to desired “DB”(R&Dwill provide one reference sample for calibration. I

27、f not provided, please use B304 0ne for calibration) Therefore. the Fix Loss should be set by calibration. Config- EUT- Inquiry Procedure-while BT address is shown on the Screen- Select and Return BDAii.Test - Active to 3 - Select “Single Slot Sensitivityiii.Edit - Test Mode /Pkt /Pwr-Type = HV3; Se

28、t Transmit Power t0 70 “5)To see the result:Results - Select Single Slot Sensitivity - Detailed ResultsIf BER 0.1Increase the Transmit Power in 4)-iv until BER 2W resistor)at the output,outputshouldInput 240Vrms (AC) and connect a be 5V and 200mA.load (250hm 2W resistor)at the output,outputshouldRechargeable BatteriesAll the Lithium-ion Polymer (LIP) rechargeable battery must be full checked before production. All batteries are charge up by 0.5C then discharge by a 480hm resistor. Measure the discharging time until voltage is dropp