INTERTEK TESTING SERVICES
Test Report Number: HK08060834-1 Page 40 of 72
FCC ID: T7HCT8015
Company: RTX Consumer Products Hong Kong Ltd. Date of Test: June 24-July 7, 2008
Model: MBU 400
4.14 Frame Repetition Stability, FCC Rule 15.323(e):
[ × ]
EUT implements Time Division Duplex (TDD) in order to support duplex
connection on a given frequency carrier shall maintain a frame repetition rate
whereby 3 X the standard deviation of the frequency stability shall not exceed
50 ppm, not including a shift of the mean.
[ × ]
EUT uses Time Division Multiple Access (TDMA) in order to support multiple
communication links on a given frequency carrier shall maintain a frame
repetition rate whereby 3 X standard deviation of the frequency stability shall
not exceed 10 ppm, not including a shift of the mean.
Measurements are made in accordance with ANSI C63.17 sub-clause 6.2.2. Test setup is
shown in section 3.2 Figure 3.2.1. A spectrum analyzer measures the time duration
between rising edges of two consecutive frames over a time period of at least 1000 frame
periods. These measurement values are used to compute the 3 X standard deviation of
the frequency stability.
Test Results:
Maximum Frame Repetition Stability
(ppm)
Limit (ppm) Results
<0.0001 10 Pass
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