Let's say I was going to DIY a passive composite video balun for use over unshielded CAT5...
I've got a box made by MuxLab sitting in front of me right now, and the video signal is running through a coil of some sort, and that's all there is between the RCA jack and the RJ45 connection. The coil looks identical to the white thing in this photo:
Is that a transformer or some sort of filter?
The specs on this thing say it's for 75ohm input impedance on the RCA and I know that CAT5 is 100ohm. It reads like an open circuit between the tip and the sleeve (and between each conductor of the twisted pair) which leads me to believe that it's not a transformer. There's 5ohms of DCR (on each leg) between the RJ45 and the RCA, which sounds more like an inline filter or choke of some sort.
Obviously I'm not well versed on components like this, or on video standards for that matter.
Anybody know what thing is? I briefly paged through the mouser and digikey catalogs and nothing jumped out at me, and the part number stamped on the side of the one in my hand looks like a proprietary MuxLab part # (ML/27-25A).
I've got a box made by MuxLab sitting in front of me right now, and the video signal is running through a coil of some sort, and that's all there is between the RCA jack and the RJ45 connection. The coil looks identical to the white thing in this photo:
Is that a transformer or some sort of filter?
The specs on this thing say it's for 75ohm input impedance on the RCA and I know that CAT5 is 100ohm. It reads like an open circuit between the tip and the sleeve (and between each conductor of the twisted pair) which leads me to believe that it's not a transformer. There's 5ohms of DCR (on each leg) between the RJ45 and the RCA, which sounds more like an inline filter or choke of some sort.
Obviously I'm not well versed on components like this, or on video standards for that matter.
Anybody know what thing is? I briefly paged through the mouser and digikey catalogs and nothing jumped out at me, and the part number stamped on the side of the one in my hand looks like a proprietary MuxLab part # (ML/27-25A).