Extron electronic DSC 3G-HD A SDI Embedded Audio, HDMI Audio Signal, DSC HD-3G A Audio Embedding

•Two-channel Digital Mode: In this mode, you can select a channel group, then one pair of AES channels from that group to embed, using either the SDI Audio Decode option of the Audio menu or SIS commands (see the Audio Input Format commands on page 57. To select a channel pair:

1.Press the  and  buttons to select the group number (1 through 4).

2. Press the  and  buttons to select the channel pair number (1 or 2).

•Eight-channel Digital (Full Digital) Mode: In this mode, the first four pairs (eight channels, groups 1 and 2) are embedded (see the table below). You are not able to select a channel pair.

Group	SDI Embedded Audio	HDMI Audio Signal
1	Pair 1 — Channel 1	L – Left speaker
	Pair 1 — Channel 2	R – Right speaker
	Pair 2 — Channel 1	LFE – Low frequency extension (woofer)
	Pair 2 — Channel 2	C – Center
2	Pair 1 — Channel 1	LS – Left surround
	Pair 1 — Channel 2	RS – Right surround
	Pair 2 — Channel 1	SBL – Surround back left
	Pair 2 — Channel 2	SBR – Surround back right
3	Pair 1 — Channel 1	Reserved for future use
	Pair 1 — Channel 2	Reserved for future use
	Pair 2 — Channel 1	Reserved for future use
	Pair 2 — Channel 2	Reserved for future use
4	Pair 1 — Channel 1	Reserved for future use
	Pair 1 — Channel 2	Reserved for future use
	Pair 2 — Channel 1	Reserved for future use
	Pair 2 — Channel 2	Reserved for future use

DSC HD-3G A: Audio Embedding

In PCM multi-channel mode, the DSC HD-3G A embeds up to eight channels of PCM HDMI audio onto the first four pairs of AES channels on the SDI output, in sequential order. In LPCM two-channel mode, the first pair of SDI audio channels is used (you cannot select a channel pair on the DSC HD-3G A).

All audio inputs on the DSC HD-3G A are automatically delayed to compensate for internal video processing.

The table below shows the channel pair mapping for the DSC HD-3G A.

SDI Embedded Audio	HDMI Audio Signal
Pair 1 – Channel 1	L – Left speaker
Pair 1 – Channel 2	R – Right speaker
Pair 2 – Channel 1	LFE – Low frequency extension (woofer)
Pair 2 – Channel 2	C – Center
Pair 3 – Channel 1	LS – Left surround
Pair 3 – Channel 2	RS – Right surround
Pair 4 – Channel 1	SBL – Surround back left
Pair 4 – Channel 2	SBR – Surround back right

DSC 3G-HD A and DSC HD-3G A • Operation 31