INTERTEK TESTING SERVICES
Test Report Number: HK08060834-1 Page 49 of 72
FCC ID: T7HCT8015
Company: RTX Consumer Products Hong Kong Ltd. Date of Test: June 24-July 7, 2008
Model: MBU 400
4.19 Maximum Transmit Period, FCC Rule 15.323(c)(3):
If no signal above the threshold level is detected, transmission may commence and
continue with the same emission bandwidth in the monitored time and spectrum windows
without further monitoring. However, occupation of the same combined time and spectrum
windows by a EUT or group of co-operating EUTs continuously over a period of time
longer than 8 hours is not permitted without repeating the access criteria.
EUT establishes a communication channel with its companion device, which occupies the
duplex pair combined time and spectrum windows. Reference RF signal generator
synchronized with the sample and then generated a pulse as a time frame reference.
The centre frequency of spectrum analyzer was set to the carrier frequency and the
SPAN was set to ZERO. The spectrum analyzer was used to monitor the time (reference
to the time signal) and spectrum of the communication channel. The occupied time or
spectrum of the communication channel shall be changed over a period of time no longer
than 8 hours. For a EUT with a frame period of 10/X ms, no more than 2,880,000 X
frames should be transmitted without a break.
Test setup is shown as follows:
Test Results:
Measured Maximum Transmission Duration
(seconds)
Limit
(seconds)
Results
600 28,800 Pass
Combiner
Spectrum
Analyzer
EUT
Reference
RF Signal
Generator
Companion
Device
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