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Preston and 12v


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#1 Lars Erik

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Posted 23 May 2006 - 11:30 AM

Hello there,

Will a Preston FF work on 12v?

The camera is a ARRI SR2. Can I get power from the cam if not from the rig?

Thanks for any replies.


Lars Erik
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#2 Fred Davis

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Posted 23 May 2006 - 12:14 PM

Hello there,

Will a Preston FF work on 12v?

The camera is a ARRI SR2. Can I get power from the cam if not from the rig?

You want to power the MDR, yes? contact assignment for the LEMO 4-pin = 1 = Gnd, 2 = +24, 3 = +12V
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#3 Lars Erik

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Posted 23 May 2006 - 02:17 PM

Hello Fred,

so a single cable will make the 24v Preston transmitter work on a 12v rig? I own the Steadicam Archer.

LE
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#4 Erwin Landau

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Posted 23 May 2006 - 09:04 PM

The MDR-1 (Motor Driver) is rated at 10.5 Volts to 30 Volts DC.

The MDR-2 (new Motor Driver) is rated at 10 Volts to 48 Volts DC. (at least mine is)

So yes, you can power the MDR with 12 Volts.


Fly safe,


Erwin
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#5 Matt Petrosky

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Posted 24 May 2006 - 12:11 AM

Didn't the old UHF Preston MDRs (pre-microwave MDR-1) require an external box for 12volts? Maybe I have it backwards and they needed a regulator for 24volts?

And as Erwin said...

the microwave MDR-1 and the MDR-2 should be fine at 12volts.

-Matt
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#6 Erwin Landau

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Posted 24 May 2006 - 12:29 AM

Voltage Converter 12/24 Volt, Part # 4800, $390.-

I owned two at one point, never used them and still don't know exactly what they're for... I think I still own the 3 pin to 4 pin Lemo cable... why? I don't know...

I checked... yes it's still there.


Fly safe,


Erwin "No idea... Who knows what I still have in my back ups case" Landau
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#7 Lars Erik

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Posted 24 May 2006 - 07:51 AM

Hey Erwin,

sorry for asking a lot of questions. I did a search on the internet, and couldn't find the 3 to 4 pin lemo voltage converter connector you spoke about, can you please let me know where I can find such a cable?

Is Nebtek a good place to contact?

Thank you very much for your help.


Lars Erik
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#8 Eric Fletcher S.O.C.

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Posted 24 May 2006 - 08:19 AM

sorry for asking a lot of questions. I did a search on the internet, and couldn't find the 3 to 4 pin lemo voltage converter connector you spoke about, can you please let me know where I can find such a cable?

Is Nebtek a good place to contact?



It's a Preston Part
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#9 Lars Erik

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Posted 24 May 2006 - 09:49 AM

Ok, Eric. Thank you very much. I'll send Preston a mail.

LE
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