First, just shoot the launch cable with nothing on the far end and make sure you can see it and the length is approximately correct. I would choose 20 ns or longer pulses. Perhaps 10 seconds of averaging time.
From: TJ Trout Sent: Monday, March 9, 2020 6:58 PM To: AnimalFarm Microwave Users Group Subject: [AFMUG] OTDR noob just got my first otdr, been trying to shoot the only fiber I have which is 4ct flat drop about 50ft. No luck so far, figured out I needed a launch cable which I now have (500m) but still can't see the mechanical connector / reflection / loss of the flat drop after the launch cable, I'm guessing it's a reflection that is blinding the OTDR and if my flat drop was 200ft I would be able to see the connection between the launch and the cable under test? I guess this is what a launch cable on the far end is for.... Any tips? -------------------------------------------------------------------------------- -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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