10
REDNET 6/D64R OPERATION
First Use and Firmware Updates
Your RedNet 6/D64R may require a firmware update* when it is first installed and switched on.
Firmware updates are initiated and handled automatically by the RedNet Control application.
*It is important that the firmware update procedure is not interrupted – either by switching off power to the
RedNet 6/D64R unit or the computer on which RedNet Control is running, or by disconnecting either from the
network.
From time to time Focusrite will release RedNet firmware updates within new versions of RedNet
Control. We recommend keeping all RedNet units up to date with the latest firmware version supplied
with each new version of RedNet Control.
Digital Clocking
RedNet 6/D64R is able to operate across two separate clock domains:
• The RedNet network clock
• The MADI audio clock
It is not necessary for these two domains to be synchronous so independent clock sources can be
used. This is made possible by the use of sample rate converters in the product’s audio input/output.
Three possible RedNet clock sources are available under ‘RedNet Clock Source’ in the RedNet
Control application:
• Internal:
Select to clock to the network via Cat 5e or Cat 6 cable (RedNet 6/D64R can
also act as network master clock).
• Word Clock Input:
Select to clock to an external word clock via BNC.
• MADI Input: Select to clock to the MADI device via Optical or Coaxial MADI.
When sample rate conversion is enabled, the clock source of the MADI output and the RedNet 6/D64R
can be selected independently in the RedNet Control application under ‘Sample Rate Convertors‘.
When sample rate conversion is disabled, the MADI output will be synchronous with the RedNet
network. In this case, the selection of clock source for the unit is made under ‘RedNet Clock Source’.
If MADI and the Network are to run synchronously, the following rules must be followed:
• With Internal as the clock source, it is important that any device sending a MADI signal to
RedNet 6/D64R is also receiving a word clock signal from the RedNet 6/D64R or another
RedNet unit.
• With Word Clock In as the clock source, any device which is sending a MADI signal to RedNet
6/D64R must also receive a valid clock signal from the same source as RedNet 6/ D64R.
The RedNet 6/D64R Word Clock Output may be switched via the RedNet Control application to output
one of four clock signals under ‘Word Clock Output‘:
• Network Clock:
Select to output the same sample rate as the network.
• Network Clock (Base Rate): Select to output the base rate of the network.
• Word Clock Input:
Select to output the same clock as the Word Clock Input.
(Note: Switchable 75 ohm termination can be selected via RedNet Control.)
• MADI Input:
Select to output the same clock as the MADI Input clock.
