Nautel NV30LT-N, Operation & Maintenance Manual

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NV30LT-N OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
PAGE 3.2.36 VERSION 0.1 2015-03-01
Available Instrument Panels
Spectrum Analyzer
See Figure 3.2.23 . The carrier level is normalized to its unmodulated carrier level at 0 dB. The graph
center is always at the carrier frequency, as defined by the active preset’s Frequency value
.
Masks are shown based on transmission mode and are defined by the latest versions of the following
standards:
 IBOC: NRSC-5
 European Standard: ETSI EN 302 018-2
 FCC CFR 47, Part 73.317 and IC BETS-6e
NOTE
: While very accurate, the spectrum analyzer may display artifacts (spurs) at some operating
carrier frequencies that are a function of the analyzer and are not actually present on the output of the
transmitter. If these spurious emissions are observed on the spectrum analyzer, Nautel recommends
that a calibrated, external spectrum analyzer be used to verify the presence of spurs.
Touch on the panel to display a cursor in the approximate area. The cursor position (frequency and
amplitude) is noted in the upper, right-hand corner of the panel. Touch other areas of this instrument
panel to provide a coarse adjustment of the cursor position.
Figure 3.2.23: Spectrum Analyzer
Peak Cog