TylerBarnes | 184 Posted October 28, 2019 Share Posted October 28, 2019 Some professional CRTs will require you to terminate any unused outputs. You will know you need them if your image is very bright, and the picture controls don't fix it all the way, or they do but need to be adjusted to one extreme or the other. This is fixed by either using the output, or putting a dedicated 75Ω terminator on the output jack to simulate the 75Ω load that using the output would normally yield. Terminators come in little BNC plugs that just cap off the unused outputs. I recommend getting some, cause they are cheap and you may need them. Many PVMs have auto terminating outputs, while a lot of BVMs need termination added. There are many exceptions to the rule, so just check the tube you end up getting by putting a terminator on and comparing if the brightness is the exact same as it is without or not. If it is the exact same, you likely have an auto terminating output. Another indicator is auto terminating outputs often have the schematic symbol for a resistor next to the output to tell you there is termination resistance on it. Some may even have a switch to toggle termination on and off. Link to comment Share on other sites More sharing options...
docile tapeworm | 4,198 Posted November 1, 2019 Share Posted November 1, 2019 Do you know if the 1351q is auto terminating? Link to comment Share on other sites More sharing options...
TylerBarnes | 184 Posted November 1, 2019 Author Share Posted November 1, 2019 3 hours ago, skinnygrinny said: Do you know if the 1351q is auto terminating? It is. That resistor schematic symbol is present on the outputs. Link to comment Share on other sites More sharing options...
docile tapeworm | 4,198 Posted November 1, 2019 Share Posted November 1, 2019 29 minutes ago, TylerBarnes said: It is. That resistor schematic symbol is present on the outputs. Dude! My bad. I buy em books and buy em books and they shot the teacher. Link to comment Share on other sites More sharing options...
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