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Analog Output Type
Please pay careful attention to the following analog
output description as it is different from those found
in all other broadcast audio processors!
Composite MPX
When selected, the male XLR outputs and the
female BNC connectors assigned to TX 1 and TX 2
carry wideband, line level composite stereo audio and,
as in the L/R case below, the XLR outputs are electronically balanced. These balanced
outputs can be used to gain a signal to noise advantage with exciters having a balanced
composite input (most modern ones do). The adjustment range of the analog outputs,
regardless of the operating mode, is ‑80dB to +6dB in 0.05dB steps, covering virtually
every conceivable operating need in the field.
Left/Right
The male XLR outputs and the female BNC connectors assigned to TX 1 and TX 2
carry line level audio. In the case of the XLR outputs the audio is electronically bal‑
anced. If pre‑emphasis has been selected in the FM Limiter screen then these outputs
are pre‑emphasized also.
Left/Right De-Emphasized
The male XLR outputs and the female BNC connectors assigned to TX 1 and TX 2
carry line level audio but are de‑emphasized complementary to any pre‑emphasis that
has been selected in the FM Limiter screen.
Test Oscillator
The built in test oscillator is capable of generating sine wave
test signals from 50Hz to 80kHz at modulation levels from 0 to
100%. The oscillator is On when the Test Oscillator check box
is selected. We have also included a special frequency, "Bessel,"
which is a 31.250kHz test signal that can be used when the first
Bessel null is being utilized for modulation monitor calibration.
FM-531HD / May 2013
F M - 5 3 1 H D P R O G U I
page 3 – 41
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