Harman Kardon AVR 745 Owner's Manual page 17

remote room location to control source equipment
functions.
When a remote IR sensor is used to control non-
Harman Kardon source equipment, we recommend
that you make a hard wire connection or use an
optional, external IR "blaster" connected to the Full
Carrier IR Output ¤. If you are in doubt as to which
IR Output jack to use for the equipment in your sys-
tem, contact your dealer or installer, or the manufac-
turer's support site and ask whether the unit to be
controlled uses "full carrier" IR commands. When "full
carrier" commands are used, make the connection to
the Full Carrier IR Output ¤. Otherwise, make the
connection to the IR Output ‹.
NOTE: All remotely controlled components must be
linked together in a "daisy chain. " Connect the IR OUT
jack of one unit to the IR IN of the next to establish
this chain.
Multiroom Audio Connections
The AVR 745 is equipped with multizone capabilities
that allow it to send a separate audio and video
source to the remote zone from the one selected for
use in the main room.
Depending on your system's requirements, three
options are available for audio connection:
Option 1: Use high-quality, shielded audio intercon-
nect cable from the AVR 745's location to the remote
room. In the remote room, connect the interconnect
cable to a stereo power amplifier. The amplifier will be
connected to the room's speakers. At the AVR 745,
plug the audio interconnect cables into the Multiroom
Audio Outputs on the AVR 745's rear panel.
Option 2: Connect the Multiroom Audio Outputs
on the AVR 745 to the inputs of an optional stereo
power amplifier. Run high-quality speaker wire from
the amplifier to the speakers in the remote room.
Option 3: Taking advantage of the AVR 745's built-in
seven-channel amplifier, it is possible to use two of the
amplifier channels to power speakers in the remote
room. When using this option, you will not be able to
use the full 7.1-channel capabilities of the AVR 745 in
the main listening room, but you will be able to add
another listening room without external power ampli-
fiers. To use the internal amplifiers to power a remote
zone, connect the speakers for the remote room loca-
tion to the Surround Back/Multiroom Speaker
Outputs fi. Before using the remote room, you will
need to configure the amplifiers for surround operation
by changing a setting in the MULTIROOM
menu, following the instructions shown on page 51.
NOTE: For all options, you may connect an optional
IR sensor in the remote room to the AVR 745 via an
appropriate cable. Connect the sensor's cable to the
Multiroom IR Input g on the AVR 745 and use
the ZR 10 remote to control the room volume. You may
INSTALLATION AND CONNECTIONS
install an optional volume control between the output of
the amplifiers and the speakers in options 1 and 2.
Multiroom Video Connections
The AVR 745's multiroom system is designed to send
both video and audio signals to a remote room loca-
tion. This may be the same source that is in use in the
main room, or you may select a separate input source
through the Multiroom menu or remote, as explained
on page 52.
The only additional connection required to add video
capabilities to your multiroom system is to connect the
Multiroom Video Output either directly to the
video display in the remote room or to any optional
video distribution amplifiers that may be required when
the length of the connection cable is such that addi-
tional amplification is required.
The following items may be of additional assistance
when using video as part of a multiroom system with
the AVR 745.
• Component or HDMI video sources may not be
routed through the multiroom system. When using a
component video device, you should also make a
composite connection for the multiroom system.
• As with all cable installations, when running any
wiring inside a wall be certain that the cable carries
the proper NEC rating for the application. The use of
improperly rated cables may present a safety haz-
ard. Consult a qualified installer or licensed electri-
cian should you have any questions about the use
of in-wall cables for video or audio.
• When connecting the AVR 745 to the remote room
video display, be aware of the distance limitations
that may exist for both composite and S-video con-
nections. Although the use of low-loss coax for
composite video and higher-grade S-video cables
may reduce signal loss, optional distribution ampli-
fiers may occasionally be required when long cable
runs are used.
A-BUS ® Installation Connections
The AVR 745 is among the few receivers available
that offer built-in A-BUS/ operation. When used
READY
with an optional A-BUS product, you have all the ben-
efits of remote zone operation without the need for an
external power amplifier.
To use the AVR 745 with an approved A-BUS prod-
uct, simply connect it to the AVR 745 using standard
Category 5 wiring that is properly rated for the specific
in-wall installation. Terminate the wiring at the receiver
end to a standard RJ-45 connector in compliance
with the instructions furnished with the A-BUS product.
No further installation or adjustment is needed, as the
A-BUS jack on the AVR 745 routes the signals to their
proper destination for power, signal source and control.
The output fed to the A-BUS jack is determined by the
AVR 745's multiroom system and menus.
RS-232 Connections
The AVR 745 is equipped with an RS-232 Serial
Connection Port b that may be connected to a
compatible, optional, external computer, keypad or
control system for bidirectional communications that
enable the external system to control the AVR, and for
the AVR to report status and handshake data back to
the controller. Use of the RS-232 port for this type of
control requires specific technical knowledge, and we
recommend that any connection and programming for
control be made by a trained installer or technician
familiar with the equipment being used.
The physical connection to the AVR 745's RS-232
port is a standard D-SUB 9 connection, but to ensure
compatible and proper operation, specific software
commands and pin wiring schemes may be required.
USB Connections
The AVR 745 is one of the few A/V receivers to offer
a USB connection that may be used for both playback
of compatible audio content from a computer and for
loading of system updates (when available).
The physical connection between a computer and the
AVR is a simple one, requiring only a cable with a USB
"A" type connector on one side and a USB "Mini B" on
the other. If you do not need the USB cable provided
with the AVR 745 for programming the TC 30 remote,
it may be used for this purpose.
Connect the larger, "A" connector on the cable to your
computer or a USB hub and the end with the "Mini"
USB connector to the USB Jack
rear panel.
NOTES ON USB:
• The USB jack on the AVR 745 is for connection to
a computer, or to a hub connected to a computer,
only. DO NOT connect it directly to other devices
such as card readers, USB memory storage
devices, external hard drives, USB accessories, digi-
tal cameras or cellular phones. Connection to these
devices may cause damage to the device and/or
the AVR that is not covered by the AVR's warranty.
• The AVR 745's USB connection may only be used
for audio playback and system upgrades. It may not
be used for other purposes, such as system control,
video or still-image playback.
Trigger Connections
The AVR 745 is equipped with two low-voltage trig-
gers that may be used to control a wide variety of
compatible, optional devices that respond to voltage
actuation commands. This includes external audio
power amplifiers, video screens, motorized blinds
and other compatible products in a home theater or
automation system. Due to the complexity of inter-
facing with power-controlled devices, we strong-
ly recommend that they be installed by a quali-
fied professional.
INSTALLATION AND CONNECTIONS
on the AVR's
17