NV30/NV40 Operations and Maintenance Manual Operating the transmitter
Issue 3.3 2014-12-10 Page 2-53
– SCA1 or SCA2 Lowpass Filter: select Enabled (applies 7.5 kHz low-pass
filter to audio input) or Disabled.
– SCA1 or SCA2 Preemphasis:
select 0 us, 50 us, 75 us or 150 us.
– SCA1 or SCA2 Mode: select FM (frequency modulated sub-carrier, typical)
or DSB-SC (double side band suppressed carrier).
Figure 2.38: Presets - RDS
RDS - (see Figure 2.38)
:
• RDS When Enabled, all the selections listed below are active.
–RDS Local Echo: select Enabled or Disabled. When Enabled, the exciter
RDS port transceiver will echo all inputs and controls received back to the
terminal.
Note:
Refer to FCC guidelines for allowable modulation depth with SCAs or RDS enabled.
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