Lexicon 20/20 AD manual Level Meters, Compressor, Display, Link, Release

20/20 AD User Guide Controls and Connectors

The Level Meters

When the compressor is off, the behavior of the level meters is determined by the settings of the 1dB SCALE, and PK HOLD switches.

When the compressor is on, pressing DISPLAY will cause gain reduction (in dB) to be displayed on the two right hand meters (2-channel mode) or on all four meters (4-channel mode).

The following charts show all of the possible states of the level meter and the value in decibels for each state.

	Switches ON	Meters 1 & 2	Meters 3 & 4
4-Channel	none	Normal	Normal
	1 dB SCALE	1 dB Scale	1 dB Scale
Mode
	DISPLAY	Gain Reduction	Gain Reduction
2-Channel	none	Normal	(Blank)
	1 dB SCALE	Normal	1 dB Scale
Mode
	DISPLAY	Normal	Gain Reduction

OVL

0

3

6

12

18

24

30

36

42

60

- red - - red -

- yellow - - yellow - - green - - green - - green - - green - - green - - green - - green -

NORMAL	1dB SCALE	GAIN
		REDUCTION
OVL	OVL	1
0	0	2
-3	-1	3
-6	-2	4
-12	-3	5
-18	-4	6
-24	-5	7
-30	-6	8
-36	-7	9
-42	-8	10
-60	-9	11

The Compressor

DISPLAY

Press to cause gain reduc- tion to be displayed on the level meters — In 2-channel mode, only the right two level meters are activated; in 4- channel mode, all four level meters display compression. Press again to deactivate.

LINK

In 2-channel mode, links the left and right compressors ; in 4-channel mode, where 1,2 and 3,4 are already linked, this control links the two pairs.

ON

Turns the compressor on and off.

		DISPLAY				DIGITAL COMP/LIMITER					100
	RMT				6
			4			8	-18	-14			mS
							-22		-10
		LINK	2			10							1S
									10
							-26	-6					∞
		ON	0			12	-36	0		0
				M	C	P				+		• –
	VID
				GAIN			THRESHOLD			RELEASE
GAIN							THRESHOLD
Adjusts the gain of low level							Sets the level at which com-
signals (below the compres-							pression starts.
sion threshold) between the
converter and the compres-
sor.

RELEASE

This control allows adjust- ment of the release time of the compressor. Release times from 0mS to ∞ are available. The attack time of the compressor is automati- cally set as a function of the signal rise time.

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