What the thread found

• Preston MDR-1 and MDR-2 motor drivers can operate on 12 volts within their specified voltage ranges.
• The MDR-1 is rated for 10.5 to 30 volts DC, and the MDR-2 is rated for 10 to 48 volts DC.
• Power can be extracted from an ARRI SR2 camera via a LEMO 4-pin connector with pin assignments of 1=ground, 2=+24v, 3=+12v.
• A voltage converter part exists from the manufacturer for adapting between 12-volt and 24-volt systems, though its specific applications were unclear to some users.
• Older UHF Preston motor drivers may have had different voltage requirements than the microwave-based models.

Depends on

• The exact specifications and capabilities of pre-microwave era UHF Preston systems remain unclear in the discussion.
• The specific use case and necessity of the voltage converter was not definitively established.
• Discussion from 2006 may not reflect current equipment specifications.

Gear in this thread

MDR

Parts

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