Extron Electronics MLC 104 Plus Series - Manual (Page 27)

2-11 MLC 104 Plus Series • Operation, Features, and Cabling
PRELIMINAR
Y
Projector,
Panel Display,
or Source Device
MLC 104 Plus Series
Right Side Panel
Ground ( )
IR Output Ground ( )
IR Control
Unidirectional IR
Strip wires
3/16” (5 mm) max.
G RO
U N
D
IR
O
U T
Tx R
x
DISPLAY
RS-232/IR
Wiring for IR display control
Wiring varies depending on the projector/display model. In most cases the
drivers are bidirectional, but sometimes only the transmit (Tx) and ground
connections will be needed for projector/display control. For bidirectional
RS-232 communication, the transmit, ground, and receive pins must be wired
at both the MLC and the projector or display.
N Each projector or display may require different wiring. For details, refer to
the manual that came with the projector/display or the Extron device driver
communication sheet.
N Maximum distances between the MLC and the device being controlled may vary
up to 200 feet (61 m). Factors such as cable gauge, baud rates, environment,
and output levels (from the MLC and the device being controlled) all affect
transmission distance. Distances of about 50 feet (15 m) are typically not a
problem. In some cases the MLC may be capable of transmitting and controlling
a given device via RS‑232 up to 250 feet (76 m) away, but the RS‑232 response
levels of that device may be too low for the MLC to detect.
Alternatively, an MLC can use infrared signals and IR Emitters to control
several source devices. However, the MLC’s direct insertion captive screw
connectors have small openings that accept just one wire per pole. To connect
up to two IR Emitters to the MLC, insert one ground and one signal wire
in the MLC’s Display RS-232/IR port, then connect the IR Emitters to those
wires. If using all single emitters or all double emitters, wire the emitters in
parallel. If using a mix of both single and dual emitters, see the IR Emitter
Installation Guide , part number 68-808-01.
(+)
(+)
(+)
(+)
(+)
(-)
(-)
(-)
(-)
(-)
(+)
(+)
(-)
(-)
(+)
(-)
(+)
(-)
IR Signal
IR Signal
IR Signal
IR Signal
Ground
Single and Dual IR Emitter Two Single IR Emitters
Dual IR Emitters Two Single & 0ne Dual IR Emitter
Ground
Ground
Ground
(+)
(+)
(-)
(-)
(+)
(-)
(+)
(–)
Black wire
w/white stripe
Black wire
Legend
VCR
DVD Player
Wiring for IR control of up to two sources