Intertek MBU 400 - Monitoring Threshold; Lower Monitoring Threshold

INTERTEK TESTING SERVICES
Test Report Number: HK08060834-1 Page 43 of 72
FCC ID: T7HCT8015
Company: RTX Consumer Products Hong Kong Ltd. Date of Test: June 24-July 7, 2008
Model: MBU 400
4.17 Monitoring Threshold:
Monitoring threshold can be relaxed according to FCC Rule 15.323(c)(9). EUT that has
a power output lower than the maximum permitted under FCC Rule 15.319(c) may
increase their monitoring detection threshold by one decibel for each one decibel that
the transmitter power is below the maximum permitted.
Calculation of Monitoring Threshold Limit:
Monitoring Threshold (T) ≤ -174 + 10 log
10
B + M + P
max
- P
EUT
dBm
≤ 15 log
10
B - 184 + M - P
EUT
dBm
Where
B
= Measured Emission Bandwidth: 1.35 x10
6
Hz
M
= 30 dB for Lower Monitoring Threshold (T
L
), or
= 50 dB for Upper Monitoring Threshold (T
U
)
P
max
= 5 log
10
B – 10 dBm
P
EUT
= Measured Peak Transmit Power: 19.24 dBm
Calculated Monitoring Threshold Limits:
Lower Monitoring Threshold (T
L
+ U
M
) in dBm -75.3
Upper Monitoring Threshold (T
U
+ U
M
) in dBm -55.3