First, Lets make it clear that sometimes the projects need to extend 3G-SDI or HD-SDI or SD-SDI to long distance like 20KM, 80KM. We know SDI signal could be only 0-200meter over coax by itself, so we need a device to extend or repeat SDI signal. Then we call such device SDI optical transceiver, SDI fiber converter, or SDI fiber optic extender.It has flexible name.
As a manufacturer of SDI optical transceiver for about 10 years. We met all kinds of SDI transmission solution,so point the following to you.
- if you want a cheap SDI optical transceiver, and you are in CCTV surveillance project. Then you could find compressed solution SDI optical transceiver device with about 150M bandwith or uncompressed solution but with no clock recovery chip, no pass pathological test and low rate optical module like 1.25G, 2.5G.Such two types have very lower price,and CCTV surveillance has lower request and normally just transmit a CCTV camera. It may be a right way.
- If you are a broadcasting integrator, and you may transmit SDI signal over different brand of SDI switcher, SDI router or edited picturers. You may meet compatibility or SDI pathological signal. Then you'd better to choose a broadcasting quality SDI fiber optic extend which has enough bandwidth over CWDM or DWDM or TDM solution which also could be pass SDI pathological test.Normally there is very less supplier who do this device to pass SDI pathological test even they state their device is broadcasting quality. In addition all broadcast quality SDI fiber converter should be compatible with ASI, TS stream.
If you have any question about such device, you could inform us freely. We have experiences for it using and very glad to answer within our ability! you could connect skype: alston224, or email: firstname.lastname@example.org.