This is a really useful tool: https://www.solid-optics.com/product/osa-dwdm-48ch/ <https://www.solid-optics.com/product/osa-dwdm-48ch/>
About 5k for the 48 channel version. There is a 96 channel as well. Very helpful for verifying and troubleshooting DWDM circuits. It’s sensitive enough that you can use it on the 1% monitor port (just add 20dB to the results). We don’t try to monitor continuously at the MUX since LibreNMS does a fine job of monitoring the optical power levels reported by the individual optics. If they all go bad at once it’s time to break out the OTDR, but single channels with issues are more likely SFP issues. The power meter / spectrum analyzer can pinpoint those. Mark > On Dec 22, 2022, at 11:34 PM, Trey Scarborough <[email protected]> wrote: > > typically unless you have a roadm or something that will be causing the > individual channels to change or you can remotely attenuate them a > permanently installed monitor isn't necessary. If its just a static filters > at each end I would recommend just purchasing a channel checker or simple OSA. > > channel checker like this > https://www.fiberinstrumentsales.com/jdsu-channel-checker.html > <https://www.fiberinstrumentsales.com/jdsu-channel-checker.html> > OSA I would recommend picking up a used JDSU 6000 and a OSA-110M they can be > picked up for descent prices. > > https://www.trsrentelco.com/products/viavi-solutions-inc-osa-110m > <https://www.trsrentelco.com/products/viavi-solutions-inc-osa-110m> > > On 12/5/22 10:29 AM, [email protected] <mailto:[email protected]> wrote: >> Well they’re certainly not giving those away. >> >> From: AF <[email protected]> <mailto:[email protected]> On >> Behalf Of Daniel Pautz via AF >> Sent: Monday, December 05, 2022 11:20 AM >> To: 'AnimalFarm Microwave Users Group' <[email protected]> >> <mailto:[email protected]> >> Cc: Daniel Pautz <[email protected]> <mailto:[email protected]> >> Subject: Re: [AFMUG] MUX Monitor port >> >> If you find something that is fairly cheap let me know as we have a few >> 50-80KM runs that could use one on each side. You are looking at something >> like this - https://www.fs.com/products/71586.html >> <https://www.fs.com/products/71586.html> >> >> From: AF <[email protected] <mailto:[email protected]>> On >> Behalf Of [email protected] <mailto:[email protected]> >> Sent: Monday, December 05, 2022 8:57 AM >> To: 'AnimalFarm Microwave Users Group' <[email protected] >> <mailto:[email protected]>> >> Subject: [AFMUG] MUX Monitor port >> >> Fiber multiplexers usually have a monitor port and 1%-5% of the light is >> sent to the monitor port so you can know the status of each wave. >> >> That’s all well and good, but what device can I plug into the monitor port >> if I actually want to monitor them? I have an OPM of course, but is there a >> network managed, SNMP capable device that I can get for this? >> >> It must exist, but my Google Fu is not working. >> >> > -- > AF mailing list > [email protected] <mailto:[email protected]> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > <http://af.afmug.com/mailman/listinfo/af_af.afmug.com>
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