At work we have this proprietary piece of hardware that has many rj45 connectors that delivers PoE and a clock pulse synced to GPS. More than once people have called me asking if this ethernet switch they found in my stash of spares is broken or something. More than once I’ve had to explain to them that what they’re holding is PoE but without the E.
We use it to discipline and sync chip scale atomic clocks, and power them without draining their batteries. We just happen to use ethernet cables for the connection. And each clock pulse distributor is rackmounted and has 48 rj45 ports.
This document is intended for engineers and telecommunications professionals who are designing, installing, operating, or maintaining time, frequency, and synchronization systems having a requirement for a low profile and highly precise frequency generator.
To use this document effectively, you should have a good understanding of digital telecommunications technologies and analog frequency generation and synthesis techniques.
Next level, make the center one USB-C.
90degrees turned
But, make it charge only.
At work we have this proprietary piece of hardware that has many rj45 connectors that delivers PoE and a clock pulse synced to GPS. More than once people have called me asking if this ethernet switch they found in my stash of spares is broken or something. More than once I’ve had to explain to them that what they’re holding is PoE but without the E.
Why would such abomination even exist tho?
We use it to discipline and sync chip scale atomic clocks, and power them without draining their batteries. We just happen to use ethernet cables for the connection. And each clock pulse distributor is rackmounted and has 48 rj45 ports.
Your chippa wrack a disiprine
Yes, pretty much: Section 2.10 of the manual says so.
Fine, I guess I’ll use it INEFFECTIVELY.
Without the negotiation resistors. Will work only with cheap crap that doesn’t check for them, or have them either.