Orban OPTIMOD-FM 8600, Operating Manual

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INSTALLATION ORBAN MODEL 8600
With no modulation other than the pilot tone, an oscilloscope trigged from the
19kHz pilot tone should display the following:
Figure 2-5: Pilot/SCA Phasing Scope Trace
To minimize the amount of peak level that the RDS subcarrier adds to the composite
baseband, your Optimod’s RDS generator is locked in quadrature with respect to the
pilot tone, so Figure 2-5 is for reference only. If your transmission system is broad-
casting stereo correctly, it will also correctly pass the phasing built into your Opti-
mod’s SCA generator.
References
•
IEC 62016 Edition 2.0, 2009-07 (European RDS and most of North American RBDS)
•
NRSC-4-B (ways in which the RBDS standard deviates from IEC 62016)
•
NRSC-G300-B (guidelines for usage of RBDS)