Junger Audio d02 - Digital Dynamics Processor - Manual (Page 19)

3. CONTROL AND DISPLAY ELEMENTS
The expander THRESHOLD can be changed upward or downward with two
buttons and is visible on the LEDs above them. Four expander thresholds (-60
dB, -50 dB, -40 dB, -30 dB) can be selected. The threshold level is related to
the choosed digital reference level.
expander
In the OFF position the expander function is switched off.
The activity of the expander is indicated with a red LED in the display
gain reduction.
The compression ratio is adjusted by pressing the RATIO button and the
currently selected ratio is shown by the lighting of the appropriate LED above
the RATIO button. compressor
One of four different ratios can be selected (1.1 : 1, 1.3: 1, 1.6 : 1, or 2 : 1).
There is also a compressor off position where the compressor function is
turned off. In this case none of the ratio LEDs will be lit.
Compression is partly achieved by increasing the level of low level signals,
(the lowest of which might otherwise be below the noise floor of the FM
transmission system). The lower the input signal level the higher the
additional gain applied to that input signal by the compression processing will
be. The maximum amount of gain applied to a low level signal can be
adjusted independently of the compression ratio. Press both the RATIO
buttons at the same time until normal gain display will be switched off.
maximum compression
gain
A red LED will light in the compressor gain display which indicates the
maximum value. This value can be changed with the keys INC and DEC in
the range of 2 dB ... 15 dB.
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