1、蓝牙耳机生产测试方法及标准Product nameConfidentiality levelBluetooth HeadsetOpenProduct versionTotal 16 pagesDraftProduct Test Specification for Bluetooth HeadsetPrepared by LishuzhengDate2013-12-13Reviewed by DateApproved byDateAuthorized byDate（ for internal use only）Change HistoryDateVer.DescriptionAuthor2013
2、/12/13DraftInitial versionLishuzhengContents TablesProduct Test SpecificationKey words：Bluetooth Headset, PCBA, RF test, AcousticSummary：The test specification for Function, RF test, PCBA test and acoustic testReference List：Reference ListNameAuthorNoDatePositionPress1 Test ProcedureBefore start ATE
3、, engineer should check and enter appropriate values in setting environment.Manual Settings Software version number, eg “20131213” Upper and lower limit for each test items Started and stopped Bluetooth address range RF test probe and cable lost for calibration and compensationStation Requirement In
4、 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 “6AA5” All test items should display on the screen Each production day have a log file for each station. Each log file includes all samples serial no
5、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, date and time for reference.1.1 Station 1 Module Download- Measure current consumption at 3.3V- Download and verify the software (include applicatio
6、n and test mode, or test mode only)1.2 Station 2 Module functional test (Freq trim, PIO, AIO, voltage and current)Check current consumption- Feed a 3.3V supply 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 lo
7、g 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 correct 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
8、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 PlO and verify.Save the result 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 path- Set D
9、UT into PCM Loopback mode. Feed 1 kHz, 5mVrms to mic input and measure, the speaker output level. Save the speaker level to log file1.3 Station 3 Module RF Test (Conducted test)- Enable the DUT to enter Bluetooth Test Mode by using RFCLI.EXE command- Set the measuring condition of E1852B according t
10、he following setting.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 fast respond)- Coupling loss: 0dB
11、Measure: - 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 TestConditions:- Whitening: Enable- RF level: -75dBm- Modulation index : 0.32- No. of bits: 10000Measure:- Bit Error Ratc (BER)- Packet
12、Error Rate (PER)Repeat the above test for Carrier 39, 781.4 Station 4 Main Board PCBA Functional test (PIO AIO, voltage and current)Supply 3.7V to the BAT+ to 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
13、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 Audio path Set the DUT to PCM loopback mode. Feed lkHz, 5mVrms to mic input and measure the level from the speaker output.Check current consum
14、ptionMeasure Off Current- Reset DUT, measure the input current at 3.7VMeasure Standby Current- Enable DUT to Receive mode (RXSTARTI at 2442MHz).- McaSUrc the input current at 3.7VMeasure Operation Current- Enable DUT to transmit mode (TXSTART at 2442MHz).- Measure the input current at 3.7V.Measure C
15、harging 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.1.5 Station 5 Main board PCBA RF test (conducted test)RF Test (conducted)Transmitter testConditions:- Carrier: 0- Packet type: DHI- Packet leng
16、th: 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 F1 max-
17、 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 Ratc (BER)- Packet Error Rate (PER)Repeat the above test for Carrier 39, 781.6 Station 6 Main board PCBA RF test(Coupling test)-
18、 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- Packet length: 27- Poll period: 10- RF level: -50dBm- Data for delta F2: BS55(10101010)- Data for delta Fl: BSOF(00001111)- Meas. Averaging fac
19、tor: 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)Loopback TestConditions:- Whitening: Enable- RF level: -75dBm- Modulation index : 0.32
20、- 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 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
21、)- Write Ox000 to PS Key Ox025D (Enable VM)1.7 Station 7 Acoustic test after casing1. Setting the Battery voltage t0 4.10V-4.24V, adjust the Charger voltage Trim value to meet the target. Write the correct value into PS Key 0x03b7 , then reset DUT and verify.Save the value in log fileSetting chargin
22、g 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 assembly, use Casira for Audio Gateway. Pairing the BT headset and carry out acoustic test. Measure TX and RX loudness and1.8 Station 8 Prod
23、uct RF Sensitivity TestProduct RF sensitivity Loss Comp - Apply Loss Compensation ”V” -Fix Loss to desired “DB” (R&D will provide one reference sample for calibration. If not provided, please use B304 0ne for calibration) Therefore. the Fix Loss should be set by calibration. Config- EUT- Inquiry Pro
24、cedure-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; Set Transmit Power t0 70 “5) To see the result:Results - Select Single Slot Sensitivity - Detailed Results If BER 0.1Increase the T
25、ransmit Power in 4)-iv until BER 2W resistor) at the output, output should be 5V and 200mA.Input 240Vrms (AC) and connect a load (250hm 2W resistor) at the output, output should be 5V and 200mA.Rechargeable BatteriesAll the Lithium-ion Polymer (LIP) rechargeable battery must be full checked before p
26、roduction. All batteries are charge up by 0.5C then discharge by a 480hm resistor. Measure the discharging time until voltage is dropped to 3V. The discharging time at least 2 hours2 Specification2.1 Station I Module DownloadDownload and verification: Should be PASSED2.2 Station 2 Module functional
27、test (Freq trim, PIO, AIO, voltage and current)Module turn on current: 1mA - 3mA (For ATE Setup: 0.2mA - 4.5mA)Module output voltage: 1.75V - 1.85VTrimmed freq. : 2441MHz +/-3 kHzTrimmed value: 0 - 63PIO(0-10): PassAIO(0): 0.9V 1.1VAudio output level: 0.1Vrms - 0.5Vrms(Mic input 1 kHz 5mVrms)2.3 Sta
28、tion 3 Module RF Test (conducted test)RF and audio test(conducted)Carrier 0ItemsDescriptionsLower limitUpper limitUnitsAverage Power-64DBmPeak Power-64DBmFreq. Offset-7575kHzFreq. Drift-2525kHzFreq.Drift Rate-2020kHz/50usAvg, Delta F2max115175kHzAvg, Delta Fl max140175kHzDeltaF2/DeltaF0.751-Packet Error Rate (PER)050%Bit Error Rate (BER)00.1%Carrier 39ItemsDescriptionsLower limitUpper limitUnitsAverage Powe
