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HELIX DN9848E Remote Control Software
User Guide
37
4.3.3 Parametric equalization (PEQ)
This section provides a simple overview of PEQ. For additional detail refer to Sections 5.3.6 and 7.1.
The HELIX DN9848E provides 12 parametric equalisation stages per input channel for equalising signal
in respect of room/venue characteristics. Each stage can be used across full range (20Hz o 20kHz) and
has Frequency, Q (bandwidth) and Level control knobs for setting and adjustment.
To set the PEQ
1 Click on the PEQ button on the input channel’s control panel. You will see the
PEQ screen for that input; see section 4.2 on page 35.
2 Set frequency (20 Hz to 20.00 kHz), bandwidth Q (0.08 to 3.0 Oct) and level
(-18.0 to 6.0 dB) using the appropriate control knobs, see diagram right. You
can also alter the frequency and level by clicking and dragging the target on
the graph; refer to section 7.1 on page 60.
PEQ sections that are not needed in the set up should be set to 0dB attenuation/boost at
the Level control knob.
To reset a single PEQ’s settings to default
1 To reset the PEQ values back to default, press at
bottom of section.
2 Click YES at the window prompt.
To reset all of the PEQs’ settings to default
1 To reset the values of the 12 PEQ sections back to default,
press
(underneath the row of buttons at
bottom of sections).
2 Click YES at the window prompt.
4.3.4 Compression (channel protection)
Each input has an independent full-range compressor
to improve the dynamics of the incoming signal levels.
The compressors are variable ratio and can be set to a
hard knee characteristic for a sharp gain reduction
response at the compression threshold, or soft knee for
a more ‘musical’ response. This screen has an
eight-segment signal meter (see section 4.4).
To set the compressor parameters
1 Click on Protect on the input channel’s control panel. You should see the Protect screen; see
section 4.2 on page 35.
2 Set threshold (-10.0 to 21.0 units), ratio (1:1 to 5:1), attack (40 µs to 100 ms) and release
(10 ms to 2000 ms) using the appropriate control knobs.