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WirelessUSB™

Manufacturing Test Kit

User’s Guide

Cypress Semiconductor

3901 North First Street

San Jose, CA 95134

408-943-2600

Cypress Semiconductor Corporation

Page

1/20

April 28, 2005

Содержание WirelessUSB MTK

Страница 1: ...WirelessUSB Manufacturing Test Kit User s Guide Cypress Semiconductor 3901 North First Street San Jose CA 95134 408 943 2600 Cypress Semiconductor Corporation Page 1 20 April 28 2005...

Страница 2: ...There are only a few critical components on the customer s board that affect the operation of the radio Most of the likely assembly level failures missing components open cold solder joints and pin to...

Страница 3: ...to 1 Manufacturing Test Kit Contents below Not included but required for use are the Device Under Test DUT and an anechoic RF test chamber sized appropriately for the DUT with SMA pass through connect...

Страница 4: ...Photo 1 Manufacturing Test Kit Contents Cypress Semiconductor Corporation Page 4 20...

Страница 5: ...tors It is important that the connections are tight enough that good contact is made Loose connections can greatly impact the repeatability of the test 4 Place fixed or variable attenuators between th...

Страница 6: ...Fixed attenuator to extend antenna beyond foam Or use SMA M to SMA F extender Photo 2 Fixed Antenna Mounting Example Cypress Semiconductor Corporation Page 6 20...

Страница 7: ...Photo 3 Completed Installation Cypress Semiconductor Corporation Page 7 20...

Страница 8: ...ould respond to the Standard Test executed by the Tester Note that the foam in some shielded test boxes is conductive The bare DUT board if testing a bare PCB should be placed in a fixture not directl...

Страница 9: ...Cypress Semiconductor Corporation Page 9 20...

Страница 10: ...nder Test DUT are echoed with the addition of an added byte that contains the count of invalid bits for the received packet Extra bytes in packets that are larger than what the DUT can support are ign...

Страница 11: ...and left buttons during power up enters the test selection mode The LED turns off to indicated that the mouse in the test selection mode Releasing both buttons and pressing the left button once to se...

Страница 12: ...for details about the serial communication protocol The source code for the PSoC in the MTK Test Fixture is included in the kit CD ROM The user may customize the test firmware as desired The PSoC can...

Страница 13: ...e help menu for an example The letters in the hexadecimal numbers may be lowercase as well A listing of all the supported commands with parameter limits is displayed by typing the command HE as shown...

Страница 14: ...pletion or CE command error A successful command completion in the case where DUT interaction is involved does not necessarily mean that the DUT successfully completed the request The PD command and t...

Страница 15: ...00 Packet payload length 5 Packets per channel 128 WUSB LS Radio Registers Output format in hex addr val 00 07 01 04 02 4a 03 00 04 06 05 01 06 0b 07 03 08 00 09 00 0a 00 0b 00 0c 00 0d 01 0e 00 0f 00...

Страница 16: ...te that when pressing the START button on the tester that the test results are displayed in the terminal window without the command response and command prompt as follows TE 864 RE 1008 Cypress Semico...

Страница 17: ...ld the DUT in the proper alignment Note that the foam in some test chambers is conductive If testing bare boards be sure to use a fixture or some other means to insulate the board from the foam A test...

Страница 18: ...does not fix the problem attach the antenna directly to the SMA on the MTK Test Fixture and test the golden DUT in free air no chamber If this still does not pass make sure that the Test Fixture has...

Страница 19: ...is a unit that while good and passing all the requirements exhibits the lowest attenuation limit ever seen in a good unit Now that a limit has been found the fixed attenuation should be installed in...

Страница 20: ...s Requirements Attenuation of incoming RF energy 30dB 2 4GHz Attenuation of reflected RF energy 15dB 2 4GHz 7 5dB each direction Connectors One 1 SMA minimum Many vendors sell test chambers that will...