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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

What about fan speed?

Karl Krings

Karl Krings

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Hey,
its possible to runs scarlet on lower fan speed? maybe constant on 50%? for me 75 and more is really noisy :)
...or will i grill the chip when i lower it permanently etc.?

thanks
 
I guess it will depend on the condition you shoot, just back from a 4 days shooting in Sumatra rain forest with 43 degrees C and almost 100% of humidity, you can be sure you need more than 50% fan speed in this case. Maybe try in Auto fan mode and see what speed it goes in the condition you shoot first before fix the fan at one level.
 
thanks. we are here at 15 degree a little sun outside. inside about 20 degree. fan starts low at 50 and after 3-4 minutes its rise up to 70-80. is there a safety mode for the camera to shut down when its too hot?
 
Karl Krings said:
is there a safety mode for the camera to shut down when its too hot?
Click to expand...

it will not shut down, when it gets hot auto fan speed will override your manual settings and it'll kick in full throttle, after it cools down the sensor fan speed goes back to your manual settings.
i hate that fan noise, but i just recently found out that on C300 fan is even louder, and it's speed is not configurable if I am not mistaken.
 
Paramon Ivanovich said:
it will not shut down, when it gets hot auto fan speed will override your manual settings and it'll kick in full throttle, after it cools down the sensor fan speed goes back to your manual settings.
Click to expand...

I didn't know that, interesting, thanks for the info !

For the small story, on this shot in Sumatra, the production impose to shoot with 5Ds... And guess what, with those extreme conditions the 5Ds collapse due to overheat many times... The producer was pissed and my only answer was: Well what do you expect from a $3k non broadcast camera? ...
My scarlet in the hand of Fedex right now and soon in mine! Look forward to test it in those extreme conditions ! ;)
 
i do own mine since monday ;) testing and adjusting all stuff...using beachtek audio I/O. also works fine at the moment... patrick: what was your maximum brain temp. you had?
 
I had the same concerns so I ran a simple test. I set the cam for manual fan: 35% record, 80% Standby. @ 35% it was barely discernible to the ear from 4ft. I hit rec and maxed out a 128GB SSD @5k, 8:1RC (Epic). It ran for about 20 minutes before the fan kicked in at 106% the temp was 75C. It lasted only about 10-15 seconds and then kicked in one more time 4 minutes later before my card was full. I'm pretty certain the Scarlets are the same, but if you have 20 minutes, don't take my word for it, give it a whirl! (esp if you live in a warmer region) Ambient room temp was 70F.
 
ok. try it at 42% while recording and 55% while stand bye. so 75% it will pump up to max fan speed to prevent overheating. so important is not to smoke it up ;) if this won't happen i am satisfied. can you confirm that? thx
 
no, i am done with my testing :)
if I know i will be doing long shots I keep it on auto, short ones at 25rec/75stdby, also , like Timur noticed, long shots with higher fan speed get you cleaner image,
you just need a longer lens :)
 
There is a thermostat in the brain so no matter what, once that brain reaches 75C (temperature), not 75% it will just turn on no matter what. So it is a built in automatic safety net. Your brain will never self fry. No matter the setting, once it reaches 75C, it will turn on. Now with that knowledge, one can plan the lengths of their takes, or if its a loud rock concert venue, it does not matter. But one needs to test test test because all venues/studios are different in temperature.
 
Thanks for the helpful input guys.
 
The camera will shut down for temperature reasons. Below is the behavior you should get when reaching high temperatures.
At 72c the temperature display will turn yellow
At 74c it turns orange
At 75c the user speed is overridden and fan goes to max speed. Even if recording.
At 76c the temp display will turn red. Although max fan speed usually prevents getting there.
At 77c if you are recording, the record will be stopped
At 83c the camera will shutdown
 
Hey Dave, have you guys looking into different ways to get it cooler? Push-pull fan configuration? Better thermal compound? Better heatsink (it's already copper, isn't it)? Lapping the heatsink/processor to a mirror finish?

There are a lot of little things you can do to bring the temp down by a few degrees and seeing as how the camera overrides user settings from 72 to 77c, it could have a huge impact on overall (specifically long duration) recording temps.
 
Dave Winder said:
The camera will shut down for temperature reasons. Below is the behavior you should get when reaching high temperatures.
At 72c the temperature display will turn yellow
At 74c it turns orange
At 75c the user speed is overridden and fan goes to max speed. Even if recording.
At 76c the temp display will turn red. Although max fan speed usually prevents getting there.
At 77c if you are recording, the record will be stopped
At 83c the camera will shutdown
Click to expand...

This should definitely go in the manual (also for the EPIC)
 
Dave Winder said:
The camera will shut down for temperature reasons. Below is the behavior you should get when reaching high temperatures.
At 72c the temperature display will turn yellow
At 74c it turns orange
At 75c the user speed is overridden and fan goes to max speed. Even if recording.
At 76c the temp display will turn red. Although max fan speed usually prevents getting there.
At 77c if you are recording, the record will be stopped
At 83c the camera will shutdown
Click to expand...

Thanks Dave, that's very helpful! I assume that's for the core, not the sensor, right? Is there a situation where we need to pay attention to the sensor temp? It seems like the core temp is always higher.

Josh
 
joshua csehak said:
Thanks Dave, that's very helpful! I assume that's for the core, not the sensor, right? Is there a situation where we need to pay attention to the sensor temp? It seems like the core temp is always higher.

Josh
Click to expand...

Dave's reply is from 2012. The camera gives you color coded warnings if you are out of spec for your particular Black Shading Calibration due to T (temperature) or E (exposure). If the camera for some reason is baking and gets too hot it will shutdown to cool itself off to avoid hardware damage. Though You need to get it pretty damn hot to do that.
 
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