XCS Ultimate & Alexa info

[Jens Piotrowski SOC]

In short:

The Alexa is not a native 24V camera it is a native 10,5 to 34V camera.

The RS output supplies always 24VDC or higher if the input voltage is above 24V.

 

 

 

Correct! that also means that it will provide more voltage when fed, lets say 31V from a block battery, be aware...

[Benjamin Treplin]

Have a look at the link. Canatrans powered over RS.

Cam voltage 12,7V, Canatrans 25,7V

http://db.tt/aBfGgDeW

[Eric Fletcher S.O.C.]

Arri technical services confirms that the RS connector will ALWAYS output 24volts (20 watts max) regardless of the cameras input supple voltage. The camera is a 24volt camera that has a input voltage range of 10.7-36Volts.

[Eric Fletcher S.O.C.]

I also thought that power output was always the same no matter which battery powers it. I will try it today and report back.

 

 

the RS port will only provide 24V when 24V are being fed into the Camera, according to Arri

 

 

Incorrect. See my previous post. The Alexa is a native 24 volt camera with and input range of 10.7-36 volts

[Jens Piotrowski SOC]

Have a look at the link. Canatrans powered over RS.

Cam voltage 12,7V, Canatrans 25,7V

http://db.tt/aBfGgDeW

 

interesting. the alexa i was using was not giving out 24V, and the tech info came directly from arri, more testing needed...

[Eric Fletcher S.O.C.]

Have a look at the link. Canatrans powered over RS.

Cam voltage 12,7V, Canatrans 25,7V

http://db.tt/aBfGgDeW

 

interesting. the alexa i was using was not giving out 24V, and the tech info came directly from arri, more testing needed...

 

 

Here you Jens a definitive answer from Arri

 

Eric,

 

I know you are working today, so I figured this would be the best way to get in touch with you and answer your questions.

 

Power Supply:

 

ALEXA accepts an input voltage range from 10.5 to 34 V DC. The camera can be powered through the BAT connector or can be equipped with battery adapters accepting V-Lock or Gold Mount batteries. The power supply should deliver an output of more than 90 W to power the camera sufficiently. The power draw of the camera in basic configuration is about 85 W.

A 12-15 V battery should have at least 6 A maximum output current.

 

Note: when powering accessories through the camera, the power draw of the camerais increased by the amount of power drawn by the accessories.

 

 

12 V Accessories:

 

The 12 V output is located on the right side of the camera and has a 2-pin LEMO connector. It is limited to 12 V and can supply a device with a current of up to 2.2 A, depending on the camera power supply.

 

 

 

24 V Accessories:

 

Two RS outputs are located on the right side of the camera. They have a 3-pin Fischer connector. They can supply two devices with a combined load of up to 2.2 A (shared with the EXT connector power out), depending on the camera power supply. When the camera is powered from a source with a voltage below 24 V, they output 24 V. If the camera's power source is supplying more than 24 V, this voltage level is also present on the RS outputs.

 

Besides powering accessories, these sockets can also be used to send a remote start+stop signal to the camera.

 

I hope this answers your questions.

 

Sincerely,

 

Stephan

 

 

Stephan Ukas-Bradley

 

Product Manager, Digital Production