What does the highlight part mean?

[english-learner]

Media center inputs
TV: 2Vrms, maximum
COMPOSITE VIDEO: NTSC or PAL format 1Vp-p with sync 75#8486;
S-VIDEO: Luminance 1Vp-p Chrominance 0.3Vp-p
COMPONENT VIDEO: NTSC or PAL 1Vp-p with sync on Y
OPTICAL INPUT: SPDIF digital, mapped to input
Media center outputs
SPEAKER ZONES 1 and 2: Variable audio, user selectable
AUDIO OUT: SPDIF
OPTICAL OUTPUT: SPDIF, #150;15 to #150;21 dbm

[Casiopea]

Again, you're asking about techinical language. I wish I had a site to give you, but I don't at the moment.

All the best,

[M56]

Media center inputs
TV: 2Vrms, maximum
COMPOSITE VIDEO: NTSC or PAL format 1Vp-p with sync 75#8486;
S-VIDEO: Luminance 1Vp-p Chrominance 0.3Vp-p
COMPONENT VIDEO: NTSC or PAL 1Vp-p with sync on Y
OPTICAL INPUT: SPDIF digital, mapped to input
Media center outputs
SPEAKER ZONES 1 and 2: Variable audio, user selectable
AUDIO OUT: SPDIF
OPTICAL OUTPUT: SPDIF, #150;15 to #150;21 dbm

sync = sycronisation