User Manual

40 Connectors
10.3 MON OUT 1/2/3
The MON OUT connectors are BNC connectors capable of carrying a 1920x1080
422 YCbCr 1.5G HD-SDI signal with frame rates of 23.976, 24, 25, 29.97 or 30 fps
according to SMPTE standards 274M and 292M. The signal format can be changed in
the Monitoring menu.
The connectors are located at the back of the camera on the camera-right side.
10.4 EXT
The EXT connector is a multi-pin accessory connector that carries signals for
communication with various accessories and 24V power. The maximum power output
is 2.2A, shared with the RS outputs.
Cables are currently available for:
•
Connecting a UMC-3 remote motor controller (model UMC Connection Cable
(0.80m/2.6ft) K-UMC3-ALEXA)
•
Connecting two ALEXA cameras for synchronized operation (model EXT to EXT
Cable (2.00m/6.6ft) KC 155-S)
The connector is located at the back of the camera on the camera-right side.
10.5 ETHERNET
Standard Ethernet connectors cannot deliver the durability and reliability required
by ARRI, so the ALEXA uses a specially designed 10-pin LEMO connector. The
ARRI KC-153-S cable is required to connect the Ethernet socket to a standard RJ-45
Ethernet port.
The Ethernet port can be used to operate two ALEXA cameras with synced settings
by connecting the cameras with a KC 156-S cable, or to connect the Remote Control
Unit RCU-4 to the camera.
The Ethernet connector can output 24 V with 1.2 A power.
The connector is located at the back of the camera on the camera-right side.
10.6 EVF
The EVF connector connects the camera to an EVF-1 electronic viewfinder. The
signals on this connector are proprietary and can only be used to drive an EVF-1. This
proprietary signal assures low latency for the viewfinder image.
The connector is located at the front of the camera on the camera-left side.
10.7 AUDIO IN
2-channel analog line-level audio can be fed to the camera via the 5-pin XLR
connector located at the front of the camera on the camera-right side.
The ALEXA converts the audio signal from analog to 24 bit 48 kHz PCM.