The term "T.R.S." is used to describe a three-conductor 1/4" "phone" plug similar to a headphone plug.
The T.R.S. connector was originally developed for use in telephone switchboards. It is widely used in audio applications for making balanced audio connections.
The T.R.S. connector is a 1/4" diameter "phone" plug that has three conductors:
- The "tip" which is the conductor at the tip of the plug.
- The "ring" which is the middle conductor.
- The "sleeve" which is the longest conductor furthest from the tip.
Typical Wiring Connections
- The tip is connected to the "high" signal conductor of the twisted pair, which may also be designated the "+" conductor as it will carry the non-inverted signal.
- The ring is connected to the "low" signal conductor of the twisted pair, which may also be designated the "-" conductor as it will carry the inverted signal.
- The sleeve is connected to the Shield.
In the vast majority of cases, a shielded twisted-pair cable is used for cables with T.R.S. connectors on one or both ends.