The Rear Panel - Lexicon 300 - V3.0 REV Owner's Manual

Inputs
Three connectors are provided for digital input:
One of these connectors may be selected for
digital input.
Outputs
Time Code In
3-pin female XLR con- Output format can be AES/EBU or S/PDIF.
Output always goes to all three digital outputs.
nector for input of
SMPTE (Drop or Non-
drop), EBU, or FILM Digital interfaces conform to both the AES ANSI
S4.40-1985 spec and the EBU doc tech 3250.
time code formats.
Input/output impedance levels of the AES/EBU
(Electronically bal-
connectors comply with the CCITT V.11 EIA-
anced, 100mV p-p
422A specification.
minimum)
TIME CODE IN
COMM PORT
AC Power
Communications
Standard 3-pin IEC
Port
power connector.
DE9 connector, re-
served for future en-
hancements.
Digital Inputs and Outputs
AES/EBU professional format (1):
3-pin female XLR
S/PDIF EIAJ CP-340 consumer format (2):
unbalanced coaxial RCA
optical (fiber-optic)
AES/EBU
DO DI
PUSH PUSH
Out
Thru
change.
:
In
equipment such as master keyboard controllers,
MIDI foot controllers, sequencers and synthesiz-
ers.
3-pin XLR connectors, electronically balanced.
Either pin 2 or pin 3 can be used as high but, to
maintain polarity when transferring data to the
digital domain, pin 2 high convention is used by
Lexicon.
Pin 1 and either pin 2 or pin 3 of each output must
be grounded for unbalanced operation.
Input impedance is 50k
100k balanced. Inputs accept input levels from
-14dBu to +20dBu.
Output impedance is 75 , and levels up to
+18dBu are possible.
EIAJ CP340
DO DI
DI
DO
MIDI
OUT THRU IN
MIDI Connectors
:
Transmits MIDI data to other equipment.
:
Passes any MIDI data received without
Receives MIDI information from other MIDI
Installing the 300

The Rear Panel

Analog Inputs and Outputs
unbalanced, and
R OUT L OUT R IN
PUSH
Input Gain
2-position (In/Out)
switch for matching in-
put gain to the source
being used.
In = +16dB; Out = 0dB.
L IN
PUSH
INPUT
GAIN
1-3