Syncing The Settings Of Two Cameras - ARRI ALEXA Series User Manual

Syncing the Settings of Two Cameras

12.5 Syncing the Settings of Two
If the two cameras' settings are synced over Ethernet, the trigger is
automatically sent.
When the outputs are synced, jitter between the two cameras' HD
outputs is less than 500 ns. The HD output of each camera can be
advanced or delayed by up to 30 HD clocks (1 HD clock= 13.46 ns),
allowing for a total shift of 60 HD clocks (808 ns total) between cameras.
Timecode
Timecode is also transmitted from the master to the slave over the EXT
cable. When a camera has been set to slave, it automatically uses the
timecode values transmitted over the EXT cable. The TC screen will
display EXT TC from master camera as TC source, and all options are
disabled. Only the master camera outputs LTC timecode on its TC
connector.
Note: When the mirror shutter is switched on, an ALEXA Studio can only be
synced to another ALEXA Studio.
Cameras
Two ALEXAs can be operated with synchronized settings. ARRI
recommends to sync the settings ALEXAs of the same model only, for
example, two ALEXA Plus models. Settings syncing is not available on
ALEXA HD and ALEXA HD Plus models.
Camera connection
The settings of two ALEXAs can be synchronized over ethernet using
the ALEXA Ethernet/Ethernet Cable KC 156-S, or over an ethernet hub
using the ALEXA Ethernet/RJ-45 Cable KC 153-S.
Camera setup
To sync the settings of two ALEXAs over Ethernet:
1. Connect an ALEXA Ethernet/Ethernet Cable KC 156-S to the EXT
ports on both ALEXAs, or an ALEXA Ethernet/RJ-45 Cable KC 153-S
to the ethernet hub and the EXT port of each ALEXA.
2. In the System menu on the master camera, select External Sync.
3. On the EXT SYNC screen, set Settings sync to ETH master.
4. In the System menu on the slave camera, select External Sync.
5. On the EXT SYNC screen, set Settings sync to ETH slave. The two
ALEXAs will automatically negotiate IP addresses. It takes
approximately five seconds to establish a connection.
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