User manual LEXICON 20 QUICK REFERENCE GUIDE REV 1
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LEXICON 20 REV 0 (185 ko)
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LEXICON 20 REV 2 (185 ko)
LEXICON 20 QUICK REFERENCE GUIDE REV 2 (42 ko)
Manual abstract: user guide LEXICON 20QUICK REFERENCE GUIDE REV 1
Detailed instructions for use are in the User's Guide.
[. . . ] 20/20 AD Quick Reference Guide
UNBAL THRESH
1
OVL 0 3 6 12 18 24 30 36 42 60
UNBAL
THRESH
1dB SCALE PK HOLD ATTEN
UNBAL
THRESH
ALT
MUTE
2
3
M C P
OVL 0 3 6 12 18 24 30 36 42 60
UNBAL
THRESH
DISPLAY
DIGITAL COMP/LIMITER
6 4 8 10 -26 -6 -36 0 0 + 0 12
M C P
~
+ ·
4 CHAN EMPH
RMT
-18 -22
-14 -10 10
100 mS 1S ·
DITHER FORMAT
LINK
2
ON
VID
AES / WC:
WIDE HF 48 AES WC PRES
20BIT PL DN 44. 1 SPDIF AES LOCK
POWER SAMPLE RATE
20/20 AD
EXT SYNC
20 BIT A/D CONVERTER
4
GAIN
THRESHOLD
RELEASE
Getting Started
Input Connections
Balanced pin 1 pin 2 pin 3 Screen (Shield) Positive Polarity Return Unbalanced Screen and Return Positive Polarity Open or Return
Make sure the rear panel BALANCE switches are set to match the type of input. [. . . ] Press PK HOLD to cause the level meters to hold at the highest level received. When the compressor is ON, pressing DISPLAY will cause gain reduction (in dB) to be displayed on the right two meters (2channel mode) or on all four meters (4-channel mode).
NORMAL OVL 0 3 6 12 18 24 30 36 42 60 - red - red - yellow - yellow - green - green - green - green - green - green - green OVL 0 -3 -6 -12 -18 -24 -30 -36 -42 -60 1dB SCALE OVL 0 -1 -2 -3 -4 -5 -6 -7 -8 -9
GAIN REDUCTION 1 2 3 4 5 6 7 8 9 10 11
Switches ON
4-Channel Mode 2-Channel Mode none 1 dB SCALE DISPLAY
Meters 1 & 2
Normal 1 dB Scale Gain Reduction
Meters 3 & 4
Normal 1 dB Scale Gain Reduction (Blank) 1 dB Scale Gain Reduction
none 1 dB SCALE DISPLAY
Normal Normal Normal
Alternate Modes
To activate the alternate modes. . . When activated, the 1dB SCALE and DISPLAY LEDs flash and front panel controls are locked into their current settings. In 4-channel mode, ALT-LINK activates a synchronized short tone burst. (Disables 4channel mode, compression and mute functions. )
070-09091 Rev 1
. . . then press one of these.
1dB SCALE
ALT
MUTE
Repeat to exit the alternate mode.
© 1993
ATTEN
RMT
DISPLAY LINK ON
VID
DITHER
~
4 CHAN
20/20 AD Quick Reference Guide
3+4 DO 1+2 DO
PUSH
AES SYNC IN
WORD CLOCK IN OUT
PUSH
4
IN
3 UNBAL BAL
PUSH
PUSH
2
IN
1 UNBAL BAL
PUSH
V~
Using the Compressor
GAIN 0dB -3dB -6dB -8dB 1 1. 50:1 1. 20:1 1. 14:1 1. 11:1 1. 09:1 1. 07:1 1. 06:1 1. 06:1 1. 05:1 1. 05:1 1. 04:1 1. 04:1 1. 03:1 1. 02:1 2 3. 00:1 1. 50:1 1. 33:1 1. 25:1 1. 20:1 1. 16:1 1. 14:1 1. 12:1 1. 11:1 1. 10:1 1. 09:1 1. 08:1 1. 07:1 1. 06:1 3 4. 00:1 2. 00:1 1. 66:1 1. 42:1 1. 33:1 1. 27:1 1. 23:1 1. 20:1 1. 17:1 1. 16:1 1. 14:1 1. 13:1 1. 11:1 1. 09:1 4 4. 00:1 3. 00:1 2. 00:1 1. 66:1 1. 50:1 1. 40:1 1. 33:1 1. 28:1 1. 25:1 1. 22:1 1. 20:1 1. 18:1 1. 15:1 1. 12:1 5 4. 00:1 4. 00:1 2. 66:1 2. 00:1 1. 71:1 1. 55:1 1. 45:1 1. 38:1 1. 33:1 1. 29:1 1. 26:1 1. 23:1 1. 20:1 1. 16:1 6 4. 00:1 4. 00:1 4. 00:1 2. 50:1 2. 00:1 1. 75:1 1. 60:1 1. 50:1 1. 42:1 1. 37:1 1. 33:1 1. 30:1 1. 25:1 1. 20:1 7 4. 00:1 4. 00:1 4. 00:1 3. 33:1 2. 40:1 2. 00:1 1. 77:1 1. 63:1 1. 53:1 1. 46:1 1. 41:1 1. 36:1 1. 30:1 1. 24:1 8 4. 00:1 4. 00:1 4. 00:1 4. 00:1 3. 00:1 2. 33:1 2. 00:1 1. 80:1 1. 66:1 1. 57:1 1. 50:1 1. 44:1 1. 36:1 1. 28:1 9 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 2. 81:1 2. 28:1 2. 00:1 1. 81:1 1. 69:1 1. 60:1 1. 52:1 1. 42:1 1. 33:1 10 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 3. 50:1 2. 66:1 2. 25:1 2. 00:1 1. 83:1 1. 71:1 1. 62:1 1. 50:1 1. 38:1 11 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 3. 20:1 2. 57:1 2. 22:1 2. 00:1 1. 84:1 1. 73:1 1. 57:1 1. 44:1 12 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 4. 00:1 3. 00:1 2. 50:1 2. 20:1 2. 00:1 1. 85:1 1. 66:1 1. 50:1
THRESHOLD
-10dB -12dB -14dB -16dB -18dB -20dB -22dB -24dB -26dB -30dB -36dB
To minimize the audibility of compression artifacts, use ratios from the unshaded portion of the table.
Dynamic Range Compression
Start with compressor GAIN set between 4 and 6dB. Shorten the time constant for percussive program material and lengthen it for voice. Start with RELEASE set to 100mS and adjust it for the program material
Overload Protection
Press PK HOLD and 1dB SCALE. Set THRESHOLD to 0dB.
Recognizing Machine States
Flashing 1dB SCALE and ATTEN 1dB SCALE and 4-CHAN 1dB SCALE and EMPH 1dB SCALE and DISPLAY WC or AES 48 and 44. 1 Continuously Lit WIDE, HF and 20BIT Psychoacoustically optimized noise shaping activated 4-CHAN, DISPLAY, LINK, compressor ON and ALT-MUTE are disabled. [. . . ] AES sync source must be within 41-51 kHz range.
3 Oak Park · Bedford, MA 01730 USA · Tel 781-280-0300 · Fax 781-280-0499 [. . . ]
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