Fostex LM16 manual Balanced and unbalanced inputs/outputs

Model LM16 [Connection to external devices]

Balanced and unbalanced inputs/outputs

For connection between a recording mixer such as the LM16 and external devices (such as a microphone, keyboard, recorder, etc), shielded cables are used. There are two types of cables - balanced and unbalanced.

Cold

Hot

Shield (ground)

Outer jacket

Balanced Unbalanced

Balanced

The advantage of a balanced cable is its ability to reject external interference. Therefore, it is suitable for handling a small level signal or transferring over long dis- tances. The LM16 provides the following balanced connectors.

Inputs/outputs	Connectable connectors
[INPUT 1-16]	XLR-3-12 connector, 3-con-
	ductor TRS or 2-conductor
	phone plug
[STEREO OUT (L, R)]	XLR-3-11 connector
[GROUP OUT 1 - 4]	3-conductor TRS phone plug
[PHONES]	3-conductor TRS phone plug

Unbalanced

An unbalanced cable is mainly used for handling line level signals.

The LM16 provides the following balanced connectors.

Inputs/outputs	Connectable connectors
[INSERT 1 - 8]	3-conductor TRS phone plug
[EFF SEND]	2-conductor phone plug
[AUX SEND 1 - 3]	2-conductor phone plug
[ST MIX OUT (L, R)]	RCA pin plug
[MONITOR OUT (L, R)]	2-conductor phone plug
[SUB IN (L, R)]	RCA pin plug

Connector types

	2	1
XLR-3-11 connector		3
(balanced)
	1	2
		3
XLR-3-12 connector	1	Ground
	2	Hot
(balanced)
	3	Cold
		Tip
		Sleeve
RCA pin plug	Tip	Hot
	Sleeve	Ground
(unbalanced)
		Sleeve	Tip
		Ring
	INPUT/MON OUT
	AUX SEND/GROUP OUT
	EFF SEND
	Tip	Hot
	Ring	Cold
	Sleeve	Ground
3-conductor TRS phone	INSERT
plug (balanced)	Tip	Output
	Ring	Input
	Sleeve	Ground
	PHONES
	Tip	L
	Ring	R
	Sleeve	Ground
		Tip
		Sleeve
2-conductor phone plug	Tip	Hot
(unbalanced)
	Sleeve	Ground

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