Radio Shack AA0120495, Application

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INTERTEK TESTING SERVICES
FCC ID: AAO120495 30
8.4 Emissions Test Procedures (cont’d)
The EUT is warmed up for 15 minutes prior to the test.
AC power to the unit is varied from 85% to 115% nominal and variation in the
fundamental emission field strength is recorded. If battery powered, a new,
fully charged battery is used.
Conducted measurements are made as described in ANSI C63.4
−
2003.
The IF bandwidth used for measurement of radiated signal strength was
100kHz or greater when frequency is below 1000MHz. Where pulsed
transmissions of short enough pulse duration warrant, a greater bandwidth is
selected according to the recommendations of Hewlett Packard Application
Note 150-2. A discussion of whether pulse desensitivity is applicable to this
unit is included in this report (See Exhibit 8.2). Above 1000MHz, a resolution
bandwidth of 1MHz is used.
Transmitter measurements are normally conducted at a measurement
distance of three meters. However, to assure low enough noise floor in the
forbidden bands and above 1GHz, signals are acquired at a distance of one
meter of less. All measurements are extrapolated to three meters using
inverse scaling, unless otherwise reported. Measurements taken at a closer
distance are so marked.