LAWO mc256 MKII, Technical Manual

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mc²56 MKII Technical Manual V5.10.2/1 28
Chapter 1: Technical Overview
IP-SHARE
IP-SHARE
From Version 5.10.0 onwards, all mc
2
/Nova systems support a feature known as IP-SHARE
TM
. This can be
configured within a RAVENNA (IP Layer 3) network and allows up to eight consoles to set an independent gain
value for the same DALLIS mic/line input. The DALLIS Mastercard communicates with all networked consoles
and the IP-SHARE
TM
algorithm sets the optimum analog gain for all consoles. Furthermore, the algorithm ensures
that the corresponding gain compensation is applied to the digital gain stages of all consoles, when the analog
gain of the preamp is being adjusted:
IP-SHARE
TM
is only available for RAVENNA Net and for DALLIS fitted with 941/53 or 941/55 Mic/Line cards.
(Other Mic/Line cards and I/O systems do not support the feature.)
Up to eight consoles can have access to the same gain parameter (using their own "virtual" gain values).
Each console MUST use a separate RAVENNA Service IP Network range.
Only the "master" console can access the DALLIS outputs (and any inputs which are not shared).
When using RAVENNA port redundancy with a Gain Compensation DALLIS, there is no automatic
redundancy takeover. Instead, you will need to switch to the redundant RAVENNA port "manually" (e.g via a
Central User Button or external control system).
Gain compensation is enabled for qualifying inputs using AdminHD.
Once configured, each console can request an input gain value. The DALLIS receives all the requested gains,
selects the most suitable and adjusts the analog gain stage accordingly (usually to the smallest requested value).
This is then compensated by the digital gain stage of the DALLIS (back to 0dB). Each console then adds its own
gain, automatically, to return to the originally requested gain value. Note that this is handled by the I/O DSP
which means that I/O DSP cannot be used for other applications when Gain Compensation is enabled.
For more details on configuration, please see the "RAVENNA for mc
2
User Guide".