Bluetooth Headset Test Standard

In order to meet the international export standard, most Chinese OEM moible phone manufacturers generally need to do a range of mobile phone tests, sometimes the mobile phone components need to be tested separately, for example, the bluetooth and headset tests. when doing these OEM mobile phone bluetooth and headset tests, there are some test standards for reference. Below list some test standards of OEM mobile phone bluetooth and headset.

No.

Test Item

Test Purpose

Test Method and Condition

Sample

Judgement Standard

Function Test

1

 Charging  current test

Test the bluetooth headset in charging state, the consumption of internal circuit current

Instrumentation, observe the bluetooth headset maximum charging current

5PCS

90mA--110mA,Or in accordance with the requirements of product specifications

2

Volume testing

Test phone call volume in bluetooth state

Open the phone and BT state (also set to test mobile phone BT state). Test phone pull out a phone number (e.g., 112) BT ear hair sound, adjust the volume button, at this time should be different from big to small volume level。

5PCS

Volume normal or with the set value

3

Phone talking test

Test cell phone in the condition of BT phone

1, Boot function: press the BT switch machine about 2 seconds to open the headphones, the LED will be flashing green light or measured color, long du rang earplugs will issue at the same time
2, Power off function: headphones in standby mode, press the BT switch machine key about 3 seconds the LED flashing close, long du rang earplugs will issue at the same time
3﹕Setting  BT headset at BT state (in the shutdown state, press the BT switch machine about 8 seconds) and matched with BT function test and cell phones
4﹕The other dialing, test cell phone started ringing the bell, manual press BT switch machine about 1 second line connected to each other telephone calls. Communication should be clear, no noise and intermittent sound
5﹕Placement test phone in 1 meter height, testers face in the direction of the mobile phone, the other party dialing, test cell phone started to ring the bell, BT headset, manual press BT switch machine with prompt about 1 second pick up line connected to each other telephone calls, testers and test cell phone within 10 meters with each other should be clear, no noise and intermittent sound
6﹕Press the BT headset BT switch machine according to the system of two heavy pulling each other phone, the line in the other phone, BT hands-free earplugs receivable line
7: Bluetooth headset and phone are paired, manual press BT switch machine system, mobile phone acoustic images will light up to alert () at the same time headphones have prompt

5PCS

Calls should be clear, no noise, no communication as well as the discontinuous phenomenon

4

The charger dc output voltage

Testing of BT headset charger dc output voltage

Instrumentation. Adjust the ac power input from 90 v to 250 v, observe the voltmeter shows at this time should be 5 v + / - 0.25.

5PCS

Charging voltage 5 v + / - 0.25 or design value

Safety Test

5

High pressure test (with charger)

 

Between the primary and secondary﹕AC3750V\5MA  in 1 minute,

5PCS

No breakdown and arc. leakage current is equal to or less than 20 ua

6

Insulation resistance testing (with charger)

 

DC500, more than 100MΩ﹐

5PCS

No breakdown and arc

Reliability test (electric performance test)

7

Electrostatic discharge immunity test

Validation of BT headset during the process of production, storage and circulation anti-jamming performance when subjected to electrostatic discharge

Environmental requirements: temperature: 20 ~ 30 ℃, Relative humidity: 35% ~ 55%.
The atmospheric pressure: 86 kpa to 106 kpa。
CONTACT DISCHARGE: adjust the "VOLT ADJ" voltage tuning knob to the test voltage value plus or minus 4 kv, dispatch "TRIGGER" to "GUN", to "DISCHARGE" to "CONTACT", then click "START" button, the electrostatic GUN with an Angle of 90 degrees vertical prototype all metal parts of the test point CONTACT, TRIGGER the launch of the electrostatic GUN switch, automatic continuous DISCHARGE point fixed 10 times or more of the test, the prototype of DISCHARGE again;
AIR DISCHARGE: adjust the "VOLT ADJ" voltage tuning knob to the test voltage value p + 8 kv, dispatch "TRIGGER" to "GUN" and will "DISCHARGE" to "AIR", then press the "START" button, hold down the electrostatic GUN firing switch, from far and near to 90 degree Angle vertical all cracks close to the experimental prototype parts of the test point, at intervals of 1 second rate DISCHARGE, DISCHARGE time, each pair of prototype of DISCHARGE again, each place all needs to DISCHARGE 10 times or more。
No structural damage and functional after test

5PCS

The sample function temporary (failure time is greater than 3 seconds) or permanent failure (fault recovery) sentences is unqualified。
Prototype screen flash or 3 seconds can restore the fault of sentences is qualified。
sample RF contrast test data appear abnormal (receiving report level differ with power greater than 3) sentence to unqualified
sample severe bad appearance, should be judged not qualified

8

Sequential test

The basic function test BT headset

Routine function test and temperature test to 1.5 M drop test, random vibration and normal function test。

10PCS

Through the basic function test; Normal appearance and structure, the RF performance is normal, no obvious crack/damage, no loose parts inside and anomalies

surface treatment

9

Adhesion test (surface)

Inspection cabinet coating layer adhesion ability

On the coating surface, and according to the GB9286-98 choose a flat area, with a sharp blade row 1 x 1 mm small, six in each direction, the blade row through to the surface of substrate, then 3 m250 # # tape adhesion completely (see coating color full contact through adhesive tape is a valid display), after 5 minutes, and close to 120 ° direction, in 0.5 ~ 1.0 seconds smoothly to tear off the tape, inspecting the surface coated surface and gummed paper. Its layer peeling off area is more than acceptable standards.

5PCS

Small squares peeling coating area < 5% to 5% or greater peeling coating area for qualified small squares sentences is unqualified, namely GB9286-87 standard in grade 1

10

Abrasion resistance test

Inspection cabinet surface layer of the tu attached wear-resisting ability

RCA abrasion resistance meter, 175 g, 200, 50 laps to check the paint on the surface of the casing, to 250 times, every 10 laps check the paint on the surface of the casing。

5PCS

No bottom material, under test, the phenomena of surface paint should be no wear or fall off as qualified。

11

The surface hardness test

Inspection cabinet surface layer hardness

According to the requirements of GB GB/T 6739-96, with a 2 h pencil, mitsubishi Uni 】 【 for 750 (plus or minus 50 g force in shell surface being measured。

10PCS

Use the eraser to his pencil marks, should not leave scratches for qualified

Environment  test

12

salt spray test

Verify that products of salt fog corrosion resistance

Solution content of 5% sodium chloride solution. Turn off the machine on the salt spray test cabinet and prototype. Upright 12 h, so as to avoid uneven solution spraying or some surface spray. Prototype should immediately be put into test cases. Termination of the experiment. Take out the prototype, after drying, water wipe test after inspection。

5PCS

Through the basic function test; Normal appearance and structure

13

Alcohol to wipe test

Inspection casing surface layer of the tu with alcohol and people sweat friction resistance

500 g, 99% of industrial alcohol and people sweat, wipe the paint surface, respectively, 200 times

5PCS

The surface should be no fading, pitting, corrosion phenomenon

14

1.5 drop test

Inspection using adaptive by fall

Drop height is 1.5 meters; each side drop at a time, a total of six, no structural damage and functional after test.

5PCS

Through the basic function test; Normal appearance and structure

15

High and low temperature working

Inspection product adaptability under the condition of high and low temperature environment use

Prototype packaging, not being measured at standby state, in a normal position in a test box. Make temperature reached - 20 + / - 3 ℃, the temperature stability after the last 16. Example test the temperature in the cabinet up to 55 ℃, the temperature is stable after 16 hours continuously, continuous period. Measured immediately after the prototype test

10PCS

Through the basic function test; Normal appearance and structure

16

random vibration

Test products undergo severe grades of random vibration

Prototype packaging, not being measured at standby mode. Firmly fixed on the test bench. Test parameters: 5-20 hz frequency range, the power spectrum density of 0.96 m2 / s3; 20-500 hz frequency range, power spectrum density of 0.96 m2 / s3 (20 hz), other 3 db / ℃ t. Three axial axial:. Duration: 1 hour per direction, a total of 3 hours. End of the duration, remove was inspected after test for the sample

10PCS

Through the basic function test; Appearance and structure is normal, no loose parts and abnormal

17

Experimental temperature change work

Verify that products ability to withstand ambient temperature changes gradually

Be standby mode for the sample, according to the 1 h - 20 ℃ placed; Place 1 h 55 ℃; Conversion time 30 min test set, including five consecutive cycle; Test immediately after the test.

10PCS

Exterior is normal; Function, the performance is normal.

18

Steady damp-heat

Inspection product adaptability under the condition of constant humid environment use

Is not packing, at standby state, for the sample in a test box. To make temperature of 40 + 2 ℃, humidity of 95%, stable after 96 hours continuously, continuous period. Measured immediately after the prototype test。

10PCS

Through the basic function test; Normal appearance and structure

Life  test

19

Button Life Test

Inspection machine key service life and long term effects on surrounding devices

Test according to the system is: the volume button number: 10000 times; 40 times per minute. MFB key number: 50000 times; 120 times per minute; according to the pressure: 500 g; After the completion of the test, the conduction resistance less than 200 mohm.

10PCS

Keys should be able to work normally, and buttons surface color and character should be no wear, fall off; Conductive adhesive has failed to crack/breakage; Must pass from basic functional testing and measuring

20

DC plug plug pull test

Check the service life of the DC socket and machine plug for a long time the influence of the DC socket on the device。

Pull out, the number of 2000 times, no loose phenomenon

2PCS

Plug service life of at least 2000 times, structure, appearance and function of normal, no loose

21

DC plug tension tests

Test the life of the DC socket and tighten

DC socket to bear 50 g effect, duration: 1 minute

2PCS

Structure, appearance and function of normal

22

Battery standby time

Inspection service life of the battery

Standby time: more than 200 H; work time: more than 9.5 H

2PCS

Batteries should be able to work properly

23

Ear clip bending test

Check the service life of the ear clip

Bending number: more than 800 times; \ 10 times per minute; after the completion of the test no fracture phenomenon

10PCS

Structure, performance (function) has no abnormal, no fracture phenomenon

24

Earplugs torsion test

Check the service life of earplugs and strong

Test strength: more than 2.8 KGF, no loose. Fracture phenomenon

5PCS

Earplugs no loosening and fracture phenomenon

25

Ear clip insert life pull test

Check the service life of the ear clip and long-term mobile phone plug ear clip on the influence of the related devices.

Pull plug number: more than 400 times, no loose. Fracture phenomenon

10PCS

Ear clip without loose, fracture phenomenon