Goto Section: 2.1503 | 2.1507 | Table of Contents
FCC 2.1505
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 2.1505 Test instrumentation and equipment.
(a) Receiver (field intensity meter). A calibrated field intensity
meter (FIM) with a frequency range of 30 to 1000 MHz is required for
measuring radiated emission levels. This instrument should be capable
of making peak measurements with a bandwidth of 100 kHz.
(b) Spectrum analyzer. Spectral measurements are to be made with a
spectrum analyzer with a minimum resolution bandwidth no greater than
10 Hz. The video filter, if used, should have a bandwidth wide enough
so as to not affect peak readings. A linear video output is desirable
for performing measurements of modulation characteristics.
(c) Storage oscilloscope. Measurements of modulation characteristics
are to be made using a calibrated storage oscilloscope. This instrument
is to be DC coupled and capable of manually triggered single sweeps.
(d) Frequency counter. A frequency counter with an accuracy of at least
5 parts per million is required for measuring the carrier frequency.
(e) Signal generator. A calibrated signal generator with an output of
at least 75 mW at 121.5 and 243 MHz is required for generating a
reference signal for site calibration.
(f) Antenna. Radiated emissions are to be measured with calibrated,
tuned, half-wave dipole antennas covering the frequency range of 30 to
1000 MHz.
(g) Temperature chamber. Tests which call for subjecting the EPIRB to
temperature levels other than the ambient temperature are to be
performed in a temperature test chamber which can be adjusted to stable
temperatures from -20 to +55 DEGC. This chamber is to be of sufficient
size to accommodate the EPIRB under test.
(h) Vibration table. A vibration table capable of vibrating the EPIRB
with a sinusoidal motion is required. The table must be capable of
varying the frequency of vibration either linearly or logarithmically
over a range of 4 to 33 Hz with maximum peak amplitudes of up to 2.5
mm.
(i) Salt fog chamber. A chamber capable of producing salt fog at a
temperature of 35 DEGC for 48 hours is required. This chamber is to be
of sufficient size to accommodate the EPIRB under test.
(j) Drop test facility. A facility which will permit dropping an EPIRB
from a height of 20 m into water is required. The water must be deep
enough so that the EPIRB will not touch bottom when dropped.
Environmental and Operational Test Procedures
Goto Section: 2.1503 | 2.1507
Goto Year: 2010 |
2012
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