Lantronix CoBox-Micro, Руководство пользователя

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Integration Guidelines Test Environment
10-1
10: Integration Guidelines
The chapter describes the test setup and resultant emission profiles of the CoBox-Mini,
CoBox-Mini100, and CoBox-Micro. General guidelines are also provided to help you
reach the necessary standards for your applications.
This chapter assumes that the user is familiar with basic technical terms and abbreviations
and understands Lantronix product features. For product information and additional
documentation please visit the Lantronix home page
www.Lantronix.com .
Test Environment
None of the units under test (UUT) have a driver IC on board to provide RS232 or RS485
levels at their pin headers. None of the UUTs have their own power supply circuitry.
Therefore, all UUTs were hooked up to different evaluation boards, which provided a
voltage regulator and the appropriate driver circuitry and connectors for a serial RS232
interface. For your own test requirements test boards can be obtained from Lantronix,
please contact OEM sales.
First Setup
A preliminary scan was made in one of two types of sealed chambers. One type of sealed
chamber was prepared to reduce emission echo. The other type was prepared to absorb
reflection. Either type of chamber is acceptable.
The antenna used was a broadband type (EMCO biconilog 3142) connected to an Hewlett
Packard spectrum analyzer HP8566B, in combination with an RF pre-selector HP 85685A
and an Quasi peak adapter HP 85650A.
UUT cable connections and its antenna distance was determined according to the
requirements of the applicable standards. The UUT was connected to an Ethernet hub using
a common CAT5 twisted pair 10Base-T cable. Power was provided to the test board by a
regular wall cube. Output for the CoBox-Mini and CoBox-Mini100 test beds were 15 VAC.
Its output for the CoBox-Micro test bed was 9 VAC.
Second Setup
The result of the first scan was passed to a second outdoor test area in order to quantify the
emission value. This second test area was setup similarly to the one described in the section
above.