16
Notes for Virtual Switches, Page One
1. There are two MADI channel formats; 56 or 64 channel. The 56 channel format allows for ±10% deviation from
the nominal sample rate whilst the 64 channel format uses the full capacity of the MADI stream fixed to the
selected sample rate. Not all MADI interfaces support both formats; please refer to the documentation for the
connected interface to determine the correct format to use. The MADI link transmission rate is always fixed hence
at higher or ‘2Fs’ sample rates (88.1kHz or 96kHz) channel capacity is halved to either 28 or 32 channels.
For Alpha-Link LIVE to control 8-RMP units, it is essential that the MADI port be set to operate in 56 channel
format; control signals are transmitted as data packets over channel 57.
2. These options are used at 2Fs rates only, either to determine the rate of the master clock or to set the data format
for that interface:
• If the unit is set to lock to the interface in question, these options determine how the clock signal embedded
in the selected clock source is interpreted
when the clock is below 57kHz
.
• When set to ‘Legacy (SMUX)’ the distributed clock will be at Fs rate.
• When set to ‘High Speed’ the distributed clock will be at 2Fs rate.
When Alpha-Link is provided with a 2Fs rate clock (above 57kHz) the distributed clock will always be 2Fs rate.
• If the unit is
not
set to lock to the interface in question, these options are used to set the data format for
that interface:
• When set to ‘Legacy (SMUX)’ a half-rate frame pattern will be used. This format is functionally compatible
with Fs rate interfaces and may be required to interface to older equipment.
• When set to ‘High Speed’ a proper 2Fs frame pattern will be used.
To Next Page
Loading...
Need help?
General