They auto adjust the Tx. I haven’t dug deep into how that works, but I would
assume it’s keyed off the Rx signals.
However they do it, it’s not unusual for them to land at different levels
This is from a pair of 20km transceivers between two Aristas. They’re not
FS.com. The brand is Precision Optical Technologies, and the OEM is usually
either Finisar or JDSU depending on the model.
Bias Optical Optical
Temp Voltage Current Tx Power Rx Power
Port (Celsius) (Volts) (mA) (dBm) (dBm) Last Update
Et27/1 34.73 3.27 62.51 1.79 -5.14 0:00:01 ago
Bias Optical Optical
Temp Voltage Current Tx Power Rx Power
Port (Celsius) (Volts) (mA) (dBm) (dBm) Last Update
Et31/1 35.07 3.29 67.65 -0.69 -1.96 0:00:01 ago
From: AF <af-boun...@af.afmug.com> On Behalf Of Zach Underwood
Sent: Tuesday, January 23, 2024 1:52 PM
To: AnimalFarm Microwave Users Group <af@af.afmug.com>
Subject: [AFMUG] optical TX power levels
I got 2x 100gb 80km optics from FS that run difficult default TX power levels
one is 3.81dBm and the other 2.63dBm, the config on the arista devices hosting
the optics is the same.
Has anyone seen much difference between optic like this? My sample size is
small due to the optices costing $4k each
--
Zach Underwood (RHCE,RHCSA,RHCT,UACA)
My website <http://zachunderwood.me>
advance-networking.com <http://advance-networking.com>
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