Why don’t Blackmagic produce a HD-SDI extender/repeater?

[Patrick Sproule]

You can actually use any of their mini-convertors that you may have spare that has a looped SDI In / Out. The out is re-clocked. eg – with our OB truck we have used the BMD SDI to analogue convertors as SDI repeaters. We also use the SDI distribution amps and have several 6AH 12V gel cells set up with a tail to power them thus avoiding any potential earth-loop hum with local power (and it does happen and I have a dead router output to prove it). If you are doing lots of long runs though you are much better off to invest in fibre. Best thing we bought recently was a 600m drum of mil-spec fibre with 2 pairs in it. Long runs and earth loops are no problem.

Pat

[Bo Skelmose]

So what you are saing is that I can buy the HD-SDI to HDMI battery converter and just use the SDI loop through to make the converter work like a extender? Just to be sure 🙂

[Patrick Sproule]

Yes, that’s what I am saying 🙂

[Bob Zelin]

any HD DA is an “extender”. The Blackmagic SDI Distributor (1 in 8 out) will reclock all 8 outputs. So once you run your 100 meters with Belden 1505A, stick it into a box like this, and you get another 100 meters.

Of course, at that point you should really be running a fibre cable, and of course Blackmagic makes HD-SDI to Fibre converters that are very very inexpensive.

Bob Zelin

[Pierre Van den broeck]

I tried this weekend and it doesn’t work… Did you tried it ?