AMIRA SUP 4.0 Page 10 of 16
Release Notes All data subject to change without further notice.
Audio
• Specific behavior on the audio line inputs
The audio line inputs allow a signal of +8dBu max, while the signal attenuation is limited to -6dB max. Please
make sure that your line input does not exceed +8dBu in order to avoid clipping. For higher input levels,
please use an external attenuator or just reduce the signal level.
For cameras including the upgrade to the new audio board (IOAU2) the line input level can be switched to
24dBu. For details on how to activate this mode, please check the AMIRA manual.
• Single audio input cannot be recorded with different levels.
A single audio input can be routed to different recording channels, but the recording levels are the same on
all channels and cannot be different.
• Audio glitches when booting down
Please be cautious of potentially loud audio glitches when wearing headphones while powering down the
camera.
• Headphone output connected to an audio mixer
When the headphone output is connected to an audio mixer for monitoring the audio recording, the audio
board may be damaged if the camera contains the initial IAOU 1 audio board. This would only affect the
volume of the headphone out. If you recognize reduced maximal volume of the headphone output, this may
indicate this damage. Please contact an ARRI service center in this case.
• Battery change with connected AES3 source.
After changing the battery with a connected AES3 source, like a sound mixer, the audio function of AMIRA
may not be initialized properly. An error message may appear like “Switch in undefined position”. Please
reboot the camera in this case with disconnected AES3 source. Using an audio attenuator does address this
as well, please contact ARRI service for more information.
Inputs/Outputs
• 4K UHD/3.2K*: no NTSC frames rates supported on SDI 1
SDI 1 offers only framerates consisting of whole numbers at 4K UHD and 3.2K
• 6G UHD-SDI output*: no embedded audio
The 6G UHD-SDI output does not support embedded audio in the signal stream.
* Requires installed 4K UHD license
• SDI frame rate is not automatically set to project frame rate
Other than the sensor frame rate, the SDI frame rate is not automatically set to the project frame rate. This
may result in "jerky" motion on the SDI out in standby/record as well as in playback.
• No Return-In in 3.2K*, 4K UHD* and S16 mode
The Return-In input is not supported when the camera is in 3.2K, 4K UHD or S16 mode.
• No Return-In in MPEG-2 mode with psf or interlaced signals
The Return-In input is not supported when the camera is in MPEG-2 mode and the return signals are psf or
interlaced.
• HD-SDI genlock is limited to single link HD-SDI 422 1.5G signal
For genlock with HD-SDI, the input needs to be a 1.5G single link HD-SDI signal.
• Limited scaling quality in HD-SDI outputs when recording in 2K
The resulting image quality is considered sufficient for monitoring but may be limited for recording the signal
as the master record. This is due to the downscaling of the 2K resolution to HD. Please set the recording
format to HD when recording HD on the HD-SDI output as master record.
