ARRI ALEXA 35 Body & PL Mount Set (LBUS) User Manual
Page 20
Power Supply
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Additionally, the battery status can be read direct-
ly from the camera body via the two status LEDs
(2, 4). The LEDs indicate which input is in use and
whether sufficient power is available. A green LED
indicates that the input is in use, a blue LED indi-
cates that there is power at the input, but it is not
in use. The power low warning is issued when the
supply voltage is lower than 22.0 V.
Power Outputs
The main accessory outputs of the camera are the RS output and the 12 V output. In addition,
appropriate accessories can be powered via the LBUS sockets, the ETH socket, the SERIAL socket
or the AUDIO socket. The optional Power Distribution Module PDM-1 adds seven additional power
outputs (4x 24 V, 2x 12 V, 1x 12 V Twist D-Tap) to the camera.
24 V Outputs
RS
LBUS
ETH
24 V (PDM-1)
(3.0 A max.)
(4.0 A max.)
(0.5 A max.)
(4.0 A max.)
12 V Outputs
12 V
AUDIO
SERIAL
D-Tap (PDM-1)
(2.0 A max.)
(0.5 A max.)
(200 mA max.)
(2.0 A max.)
The total available power over all 24 V out-
puts is just below 100 W to be compliant with
DIN EN 62368 PS2, with a max. current of
4.0 A.
The total available power over all 12 V outputs is
50 W, with a max. current of 2.0 A.
Power Consumption
The ALEXA 35 draws between 85 W and 135 W while recording, depending on the set recording
resolution and sensor frame rate (with MVF-2 connected, but no further accessories attached).
The camera will switch off at 19.5V supply level.
Input Priority
In case both power inputs are used, the camera supports to set which input is to be used preferentially.
► Select
MENU > System > Power > Priority
to set the power input priority.
Following options are available:
Power In (PWR)
Onboard Battery (BAT)
Highest Voltage
Always use the PWR input when power is available on BAT and PWR.
Always use the BAT input when power is available on BAT and PWR.
Use the input supplying the higher voltage.
Power Warning
For each power input, a threshold can be set at which a battery warning is triggered. When the
threshold is reached, the battery values on the HOME screen as well as in the Status Info blink orange.
► Select
MENU > System > Power > Power In (PWR) Warning (%)
to set the warning threshold (%)
for the PWR input.
► Select
MENU > System > Power > Power In (PWR) Warning (V)
to set the warning threshold (Volts)
for the PWR input.
► Select
MENU > System > Power > Onboard Battery (BAT) Warning (%)
to set the warning threshold
(%) for the BAT input.