Cypress CY3631, Руководство пользователя

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CY3631 WirelessUSB™ Manufacturing Test Kit User Guide, Doc. # 001-66724 Rev. *B 7
2. Kit Operation
2.1 Hardware Setup
1. Attach the supplied antenna to the SMA pass-through connector of the test chamber.
a. Use the SMA pass-through that is furthest from the sides of the chamber if there are more
than one.
b. Orient the antenna at either 0 degrees or 90 degrees. It is important that you keep the same
relative position and orientation of the fixed antenna and the device under test (DUT) for all
tests. These can affect the signal strength. See
Figure 2-1 .
2. Attach one coaxial cable to the matching SMA outside the chamber.
a. Make certain to connect to the same pass-through that has the antenna installed.
3. Attach the other cable to the SMA on the MTK test fixture.
a. Use an appropriate SMA torque wrench on all SMA connections or tighten your finger to avoid
damaging the connectors. It is important that the connections are tight enough so that proper
contact is made. Loose connections can impact the repeatability of the test.
4. Place fixed or variable attenuators between the two cables.
a. Determine the correct attenuation.
b. If you are using the supplied fixed attenuators, use the female-to-female adapter to connect
the male end of the attenuators to the cable.
5. (Optional) Attach a serial cable (not included) between the MTK test fixture and the computer.
a. If a computer is used for setup or testing, attach it to the serial port with a serial cable or a
USB-to-serial adapter cable (not included).
b. See Appendix - A on page 19 for the default setting of the serial port on the test fixture.
6. Insert the power plug into the MTK test fixture.
a. The MTK test fixture goes through a power-on self-check, which lights all of the LED
indicators. After the green PASS light is lit, the test fixture is ready for use or to receive serial
commands.