228 HD96-24-CC-TP User Manual
Clocking
In order for the HD96-24 to function correctly, Clocking must be synchronised and stable. The HD96-24 can utilise it's own internal clock or synchronise from an
external source.
Setting the Clock source to Master utilises the internal clock. (Primary & Secondary settings do not apply).
Setting the Clock source to Slave will utilise either the Primary or Secondary selected sources. Options for these sources are available in the lists. You can choose clock
source from Word Clock, AES3, Local AES50 or Snake connections.
Depending on the Manual/Automatic Setting, Manual will force the selection to the chosen Primary or Secondary setting. If the clock is dropped with the chosen
source, it will remain searching for the clock at this source unless manually changed.
When switched to automatic, the console will attempt to sync to the primary clock. If no clock is found after a short while (approximately 4-10 seconds) it will switch
to the secondary option. If this happens to fail as well it will revert to primary and process will start again and continue until a stable clock is found.
Tip: One of the options in the Secondary list is 'internal'. This setting is useful as a backup to a primary source selection When set to Automatic, should the primary
source fail, the clock will revert to the secondary - Internal (which is equivalent to the Master Clock).
As default the console is set to Slave, if it receives no clock it defaults to the internal clock. When the console is set to be slave it can slave from FOH AES3 ports,
HyperMAC ports, SuperMAC ports, Word Clock, AES3 with a secondary slave option available should the 1st fail. Clocking can come via 3 sources:
1. Console
2. I/O Stage Box
3. Other device (via AES3 or Word Clock Input).
Metering Preferences
The Metering Preferences section of the Preferences screen provides global parameter adjustment of all of the
meters on the control surface.
Meter Delay control adjusts the meter delay time, in the range 0 to 2 seconds. For example, if the control surface is at the FOH position, this function allows you to
synchronise the meters with the audio being heard. This is because the sound from the artist on the stage will take a certain amount of time to reach you, whereas the
meters pick up that sound at source. Click the Delay Enable box to select this function. The delay time is displayed in milliseconds (ms).
Meter Decay control adjusts the time it takes the meters to fall, in the range 10 to 25 milliseconds.
Pre Fader option can be used to switch the output channel meters to pre-fader.
Redundancy
HyperMAC redundancy sets both HyperMAC ports to mirror each other for true redundancy. A KT AS80 will be required to use this function.
SuperMAC redundancy sets all 4 local AES50 ports to mirror each other for true redundancy, 1&2 and 3&4. This only works for DL15x, DL231 and DL25x I/O devices.
Spectrum Analyser
FFT size - Controls the resolution of the analyser, higher value gives more precise frequency detection but slower response rate
Overlap - Refresh rate of analysis. Higher values give better response rate.
Windows - Dierent windows types have dierent properties. Each window represents a trade-o between frequency resolution, amplitude roll o and noise oor.
Hamming and Hanning windows are suitable for most applications as they have good frequency resolution and reduce noise leakage, Hanning provides better
elimination of noise.
Blackman-Harris is similar to Hamming and Hanning but has a less steep noise reduction if greater frequency content is required.
Rectangular provides no noise reduction which is suitable for broadband frequency content.
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