Lexicon 20/20 AD manual - page 7

Lexicon
2
Controls and Connectors
1dB SCALE
ALT
PK HOLD
ATTEN
1
THRESHUNBAL THRESHUNBAL
2 3
THRESHUNBAL THRESHUNBAL
4
4 CHAN
~EMPH
OVL
0
3
6
12
18
24
30
36
42
60
OVL
0
3
6
12
18
24
30
36
42
60
MUTE
+
•
–
M
C
P
20/20 AD
Front Panel
Controls
The Converter
4 CHAN
Push on-push off selection of
2-channel or 4-channel
mode; lit when in 4-channel
mode.
EMPH
Turns pre-emphasis on and
off.
Gain Controls: 1, 2, 3 and 4
Provide continuously vari-
able gain control over a 30dB
range.
Note: In 2-channel mode,
only 1 and 2 are active.
UNBAL
Lights when there is a mis-
match between the input sig-
nal and the setting of the
rear-panel Balance switch.
1dB SCALE
Press to select 1dB Scale
display on level meters.
Also used to select alternate
modes.
PK HOLD
Press to cause the level
meter LEDs to hold at the
highest level received. Press
again to deactivate.
ATTEN
Press to attenuate balanced
input signals by 6dB. Press
again to turn attenuation off.
Do not use this control on
unbalanced signals.
The 20/20 AD front panel controls are divided into three functional groups for
conversion, compression, and synchronization/output formatting.
THRESH
When the compressor is on,
indicates that the input level
has risen above the selected
compression threshold.
20/20 AD
POWER
20 BIT A/D CONVERTER
1dB SCALE
ALT
PK HOLD
ATTEN
1
THRESHUNBAL THRESHUNBAL
2 3
THRESHUNBAL THRESHUNBAL
4
4 CHAN
~EMPH
OVL
0
3
6
12
18
24
30
36
42
60
OVL
0
3
6
12
18
24
30
36
42
60
DISPLAY
RMT
LINK
ON
6
GAIN
8
10
12
4
2
0
-14
-10
0-36
-18
-22
-26
100
mS
THRESHOLD RELEASE
DITHER
FORMAT
AES / WC:
SAMPLE RATE
EXT SYNC
DIGITAL COMP/LIMITER
-6
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Converter Compressor Synchronization and
Output Formatting
MCP
1S10
0+•–
MUTE
∞
VID
+
•
–
M
C
P
WIDE
HF
48
AES
WC
PRES
20BIT
PL DN
44.1
SPDIF
AES
LOCK