INTERTEK TESTING SERVICES
Test Report Number: HK08060834-1 Page 41 of 72
FCC ID: T7HCT8015
Company: RTX Consumer Products Hong Kong Ltd. Date of Test: June 24-July 7, 2008
Model: MBU 400
4.15 Frame Period and Jitter, FCC Rule 15.323(e):
The frame period (a set of consecutive time slots in which the position of each time slot
can be identified by reference to a synchronizing source) of EUT operating in these
sub-bands shall be 20 ms or 10 ms/X where X is a positive whole number.
The jitter (time-related, abrupt, spurious variations in the duration of the frame interval)
introduced at the two ends of such a communication link shall not exceed 25 µs for any
two consecutive transmissions. Transmissions shall be continuous in every time and
spectrum window during the frame period defined for EUT.
Measurements are made in accordance with ANSI C63.17 sub-clause 6.2.3. Test setup is
shown in section 3.2 Figure 3.2.1. A spectrum analyzer measures the time duration
between the rising edges of two consecutive frames. The measurements are taken over
100,000 frames. These measurement values are used to compute mean value and the
difference between any two consecutive frame periods. The mean value is the frame
period.
Test Results:
I. Jitter
Measured Maximum Jitter (µs) Limit (µs)
Results
-0.3731 ±25 Pass
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