BW Broadcast DSPXtra Encore, Руководство пользователя

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BAND5MIX: -3dB to +3dB of level adjustment is available.
BAND6MIX: -3dB to +3dB of level adjustment is available.
The
'CLIPPER' menu contains the clipping controls that form the final peak limiting stages
of the DSPX’s AM mode of operation.
'BASSCLIP' Controls the clip level of the mix of Bands 1 and 2 . The clip level range is -6dB
to 0dB referenced to the main clippers output level.
‘MAIN CLIPPER DISTORTION CONTROL' Controls the distortion reduction effect of the
distortion controller in the DSPXtra-AM Encore's back-end clipping system. The range of
multi-band clipping control is 1 to 10. Setting this control to 1 virtually defeats the
mechanism, while higher numbers will progressively make the mechanism work on
reducing the distortion and keeping the cleanliness of your on-air sound.
'MAIN CLIPPER FINESSE' Another distortion controlling mechanism that helps to reduce
IMD in the final clipper. The range is 1-10 with 10 producing the most distortion control. A
setting of 1 effectively bypasses this control. This control is very subtle and may not
appear to do a lot on some program material while a lot on others. The best way to set
this control is to overdrive the main clipper to hear the effect of this control and then
back the drive back down after the finesse control is set to your taste.
'MAIN CLIP DRIVE' Controls the drive into the main output clipper that defines the systems
peak clipping ceiling. Adjustable over a -6dB to +6dB range.
'LP FILTER' Controls the AM output low pass filter frequency. Frequency can be adjusted
from 4 kHz to 10 kHz in 0.5 kHz steps. This parameter sets the bandwidth of your AM
transmission. To comply with the NRSC 10 kHz bandwidth for analog AM, NRSC 8 kHz
bandwidth Hybrid AM IBOC or NRSC 5 kHz bandwidth Hybrid AM IBOC, set the
frequency to 10 kHz, 8.5 kHz and 4.5 kHz respectively.
'TILT EQ' This is the subsonic equalizer that allows you to compensate for the non-DC path
in the transmitter and reduce overshoots. The control sets the gain of the filter. The range
is 0 to 10 dB in 0.1 dB steps.
'TILT FREQ' This parameter sets the frequency of the tilt equalizer. Frequencies available
are from 5 to 50 Hz in 5 Hz steps.
'ASYMMETRY' Sets the asymmetry of the DSPXtra-AM Encore's clipping systems. Allows the
positive peaks to be clipped at the higher threshold than the negative peaks. The range
is 100% (symmetrical clipping) up to 150% positive in 1% steps. Negative peaks are
always clipped at 100%.
'POLARITY' Flips the polarity of the AM output signal. If there is a signal/phase inversion in
the wiring, STL, etc. resulting in the transmitter being modulated with more negative
peaks than positive when the Asymmetry control is set away from 100%, this control can
be used to easily fix the problem.