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AS 4367-2007 pdf free download
AS 4367-2007 pdf free download.Radiocommunications equipment used in the inshore boating radio services band.
The transmitter output is connected to a non-radiating artificial antenna. In the absence of external modulation, the power delivered to this load is measured. The measurement shall be made in normal Lest conditions and repeated in extreme test conditions.
5.6 Rated peak envelope power (J3F mode)
The declared maxiniuni rated peak envelope power permitted at the output of a transmitter operating in J3F emission mode is 12 W. When tested in accordance sith Clause 5.6.2 the measured rated peak envelope power at the ransniitter output shall be within +1 dB and
—3 dB of the manufacturer declared rated peak envelope poser.
5.6.2 Method of lest
The transmitter RF Output is connected to a non-radiating artificial antenna. The transmitter is modulated %ith standard modulating signal (J3E mode). ‘[he power at the peak of (he modulated RF signal envelope is the rated peak envelope power. The measurement shall be made in normal test conditions and repeated in extreme test conditions,
5.7 Modulation limiting
Where a transmitter operates in the A3E emission mode, the depth of amplitude modulation shall not exceed 100% when tested in accordance with Clause 5.7.2.
5.7.2 Method of lest
The transmitter output is connected to a non-radiating artificial antenna with means provided for monitoring the emission using a modulation meter capable of measuring the peak value of both positive and negative going modulation excursions. With standard modulating signal (A3F mode) applied in the transmitter input the modulating signal level is increased by 20 dli in one step. The instantaneous and steady-state modulation excursions (both positive and negative) are measured. The test is repeated with modulating frequencies of 300 [lz and 3 kHz using the same signal level required to establish standard modulating signal (A3E mode). Transient over-modulation during the first 10 ms following the 20 dli step shall be ignored.
5.8 Modulation sensitivity
Where a transmitter operates in the A3E emission mode, a signal applied in accordance with Clause 5.8.2 shall produce a modulation depth of not less than 60%.AS 4367-2007 pdf free download.
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