User's Manual

Skybitz Inc
MTXM
FCC/IC Test Report
November, 2009
WLL Report #11125-01 Rev. 3 - Page 5 of 40 - © 2009 Washington Laboratories, Ltd.
2.4 Test Location
Testing was performed on an Open Area Test Site (OATS) of Washington Laboratories, Ltd, 7560
Lindbergh Drive, Gaithersburg, MD 20879.
Testing that was performed on an Open Area Test Site (OATS) of Washington Laboratories, Ltd,
7560 Lindbergh Drive, Gaithersburg, MD 20879. Site description and site attenuation data have been
placed on file with the FCC's Sampling and Measurements Branch at the FCC laboratory in
Columbia, MD. The Industry Canada OATS numbers are 3035A-1 and 3035A-2 for Washington
Laboratories, Ltd. Site 1 and Site 2, respectively. Washington Laboratories, Ltd. has been accepted by
the FCC and approved by the American Association for Laboratory Accreditation (A2LA) under
Certificate 2675.01 as an independent FCC test laboratory.
2.5 Measurements
2.5.1 References
ANSI C63.2 Specifications for Electromagnetic Noise and Field Strength Instrumentation
ANSI C63.4 American National Standard for Methods of Measurement of Radio-Noise Emissions from
Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz
RSS170 Issue 1, Rev. 1 Satellite Mobile Earth Stations
47 CFR Part 25
2.6 Measurement Uncertainty
All results reported herein relate only to the equipment tested. For the purposes of the measurements
performed by Washington Laboratories, the measurement uncertainty is ±2.3 dB. This has been
calculated for a worst-case situation (radiated emissions measurements performed on an open area test
site).
The following measurement uncertainty calculation is provided:
Total Uncertainty = (A
2
+ B
2
+ C
2
)
1/2
/(n-1)
Where:
A = Antenna calibration uncertainty, in dB = 2 dB
B = Spectrum Analyzer uncertainty, in dB = 1 dB
C = Site uncertainty, in dB = 4 dB
n = number of factors in uncertainty calculation = 3
Thus, Total Uncertainty = 0.5 (2
2
+ 1
2
+ 4
2
)
1/2
= ±2.3 dB.