Specifications

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WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
3.4.3 DUC/RTAC Setup Screen 3 & 4
Figure 3-17 RTAC Setup Screens 3 & 4
Table 3-14 Xmtr Home>Exciter Home>Setup>DUC/RTAC>Next & >Next
Field Explanation
Peak Reduction
Peak Reduction limits the RF peak power output of the transmitter to provide optimum RTAC
performance, while preventing nuisance transmitter PA overdrive trips. In most cases, default settings
should be used.
Non-Linear Range (dB) Green if Enabled. Set in dB. Default values are typically used:
ATSC = 7dB
OFDM = 8dB
DAB = 6 dB
Max Crest Factor (dB) Max Crest Factor (dB): Set in dB. Default values are typically used:
ATSC = 11dB
OFDM =13dB
DAB = 10 dB
Downconverter
Bandpass Filter On/Off: The IF bandpass filter in the RF down converter filters out
mixing products from the down conversion. This filter has a slight
frequency response irregularity which affects the linear correction. For
VHF channels with no adjacent channels on the post-filter feedback, this
filter can be off. Otherwise this filter must be on.