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J. Zachary MacDonald

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  1. Suspect that your sled wiring is HD-SDI - not 3G SDI - so it cannot understand the higher bitrate signal that is being passed through it from your blackmagic convertor. Though it's odd that it cannot completely understand the 1080i output.. It may have something to do with the convertor assuming a 3g bitrate in its conversion process so it outputs more than the 1.5g that the signal would require. below copied from internet. may be important to note that date of introduction would be far earlier than date of general adoption in industry. SD-SDI, with a bit rate of 270Mbit/s, was introduced in 1989. It can transmit a video format of 480i and 576i. HD-SDI, with a bit rate of 1.485Gbit/s, was introduced in 1998. It can transmit a video format of 720P/1080i. 3G-SDI with a bit rate of 2.970Gbit/s introduced in 2006. It can transfer a video format of 1080P 60F/s.
  2. 10-32 thread for efp post extension collar 25mm length for sure works suspect 20mm would also work. i had to file off some of the threads near the handle to make it work properly but not sure if all are the same.
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