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LR4 LARC Framelink
User Guide
LR4 Front Panel
MACH 1-4 LEDs
Indicate which machine is currently
selected for LARC control.
Power
Provides front panel control of
power on/o. LED lights when
power is on.
Rear Panel
AC Power
Standard 3-pin IEC power connector.
100-115/230V, 50-60Hz internal
switches set voltage.
MACH 1-4
DE9 connectors for interface to LARC ports
of Lexicon 224XL, 480L or 300L.
LARC
DE9 connector for interface with
LARC (Lexicon Alphanumeric
Remote Control).
Operation
The LR4 Framelink allows a single LARC to communicate with
as many as four LARC compatible Lexicon processors
(224XL, 300L or 480L). Each mainframe can be individually
selected via the LARC and, once selected, operation is
transparent — exactly as though the LARC were directly
connected to that mainframe.
LR4 power up behavior and default machine selection varies
slightly depending on whether machines are connected and
running when the LR4 is powered on, or are connected while
the LR4 is running.
If machines are connected and running when the LR4 is
powered on, the LR4 will go through a brief set of internal
diagnostics tests, then begin successively polling each MACH
port to verify connections. After identifying the machine con-
nected to each port, the LR4 will return to the lowest numbered
port with a connected device and activate LARC control. For
example, LARC control will default to MACH1 if a device is
connected there. If devices are connected only to MACH 3
and 4, LARC control will default to MACH 3.
If the LR4 is already running when connected machines are
powered on, the LR4 will recognize the rst machine to
complete its boot cycle.
Unpacking and Inspection
After unpacking the LR4, save all packing materials in case
you ever need to ship the unit. Thoroughly inspect the LR4
and packing materials for signs of damage. Report any
shipment damage to the carrier at once; report equipment
malfunction to your dealer.
Mounting
The LR4 uses one EIA-standard rack space for mounting in
a standard 19 inch (483 mm) rack.
The maximum ambient operating temperature is 104°F
(40°C). Provide adequate ventilation if the LR4 is mounted in
a closed rack with heat-producing equipment such as power
ampliers.
Power Requirements
The LR4 is factory congured for 115 or 230V operation, and
is equipped with a 3-pin IEC power connector and detachable
cord.
Connections
Connection to the LARC should be made via the exible 50 ft.
cable supplied with the LARC. Connection to other Lexicon
devices (224XL, 480L and 300L) should be made using a
10 ft Framelink cable, Lexicon Part No. 680-04734.
Specications subject to change without notice.
LR-4 to Mainframe Cable
When connecting the LR4 to a main-
frame more than 10' away. use proper
RS422, shielded 9-conductor cable,
wired as shown to two 9-pin D-sub
connectors (male).
LR-4 to LARC Cable
224XL, 480L or 300L
224XL, 480L or 300L
224XL, 480L or 300L
224XL, 480L or 300L
Dimensions 19.0"W x 1.75"H x 4"D (483x45x102mm) 19" rack mount standard, 1U high
Weight Net weight: 2.75lbs (1.24kg)
Shipping weight: 3.75lbs (1.7kg)
Power Requirements 100/115VAC, -5/+10% or 230VAC, +10%, 50-60 Hz, 10W (Factory set)
Connectors 3-pin IEC power connector
Rear Panel Connectors 5 female DE-9 connectors, RS-422 serial communication, 9600 Baud
Front Panel Control 5 LEDs, AC power switch
Environment Operating Temperature: 32° to 95°F (0° to 35° C)
Storage Temperature: -22° to 167°F (-30° to 75°C)
Humidity: 95% max without condensation
Specications
At the beginning of either identication cycle, the LARC will
display the message SEARCHING FOR MAINFRAME in the
upper display, and the port currently being addressed in the
lower display. One of the LR4 LEDs will light to indicate the
MACH port under interrogation. Once the mainframe con-
nected to that port is identied, the LARC will display the
machine identity and address this mainframe as if directly
connected.
To select another machine for LARC control, press and hold
MACH, then immediately press 1, 2, 3 or 4 to select the device
you want. If you do not press a numbered key, the LR4 will
interrogate and identify the current port and return it to active
status. (If you do not hold down, it will perform itsMACH
normal function as a machine A/B toggle for the active device.)
To select another machine, release the button, thenMACH
repeat the steps described above.

Produktspecifikationer

Varumärke: Lexicon
Kategori: Inte kategoriserad
Modell: LR4

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