Using Two Larcs To Control A Single 480L; Controlling A 224Xl From A 480L And Larc; Selecting Input Type - Lexicon LEXICON480LV4 Owner's Manual

Using Two LARCs
to Control a Single 480L
If you frequently use your 480L in the Split or
Cascade modes, you may wish to consider pur-
chasing a second LARC. Having two LARCs allows
you to control two programs simultaneously, without
switching back and forth with MACH. Two LARCs
are also useful if the 480L is to be shared between
two different rooms.
In addition to controlling two programs at once, the
second LARC can be used to display two pages of
parameters for a single program.
The second LARC should be connected to the LARC 2
(Thru) connector on the rear panel of the 480L. Refer
to Chapter 1 for details.
Controlling a 224XL
from a 480L and LARC
In facilities equipped with both a 480L and a 224XL, it
may be useful to control both systems from a single
LARC. To do this, connect the LARC 2 (Thru) con-
nector to the 224XL LARC connector, as shown in
Chapter 1. Use the MACH key on the LARC to switch
the LARC between the 224XL and the 480L. If you are
running two programs on the 480L at the same time,
there will be three choices to step through each time
you press MACH.
Connecting a 480L and a 224XL together simply allows
you to control the 224XL as you always have--none of
the 480L's new capabilities are added to it. For ex-
ample, the 224XL cannot access the register mover or
other 480L control mode functions. Also, the 224XL
cannot be accessed by the LARC while the 480L is in
the control mode. If you press MACH while in the
control mode, the 224XL will not appear in the display.
As soon as you exit the control mode, the 224XL can be
selected.

Selecting Input Type

Slider 6 on Page 1 of Control Mode allows selection of
either analog or digital input. Both analog and digital
outputs are always active.
Before selecting digital input, be sure that proper
connections have been made to the 480L Digital I/O.
(See Chapter 1.)
Use the Clock slider on Page 1 of Control Mode to
select EXTERNAL CLOCK. Set digital clock and sam-
pling rate to match your application according to the
table below.
Analog
Clock Internal
Sampling Rate 44.1 or
48kHz
Input Analog
To determine whether the 480L is correctly receiving
external word clock, move the Status slider (Slider 1,
Page 1 of Control Mode) to display external word clock
status.
IMPORTANT
DO NOT POWER UP THE 480L WITH EXTERNAL
WORD CLOCK PRESENT AT THE 480L'S DIGI-
TAL I/O PORT. DOING SO MAY PREVENT THE
UNIT FROM COMPLETING ITS NORMAL POWER
UP ROUTINE.
1
SHIELD
2
3
4
NC
5
6
7
8
NC
9
224XL Mainframe Interconnect Cable Wiring
Basic Operation
Digital
Clock External
Sampling Rate to match Digital
Input Rate
Input Digital
1
2
3
4
NC
5
6
7
8
NC
9
2-7