Read Harman Kardon ABH-4 User Guide / Operation Manual online
ENGLISH
Operation
When the installation is complete and all connections have been made to the
ABH 4 and receiver, processor or preamplifier, and the A-BUS modules have
been properly installed in the remote rooms, operation of the ABH 4 is simple.
There are no user controls on the ABH 4.
ABH 4 and receiver, processor or preamplifier, and the A-BUS modules have
been properly installed in the remote rooms, operation of the ABH 4 is simple.
There are no user controls on the ABH 4.
After checking the connections, plug the AC power cord from the ABH 4’s Power
Supply into a non-switched AC outlet and turn on the host receiver, processor or
preamplifier. Operation of the ABH 4 is seamless, as the remote A-BUS modules
will communicate directly with the host source.
Supply into a non-switched AC outlet and turn on the host receiver, processor or
preamplifier. Operation of the ABH 4 is seamless, as the remote A-BUS modules
will communicate directly with the host source.
When the ABH 4 is used with an A-BUS/
READY
receiver, the A-BUS modules in
the remote room operate as if they were connected directly to the host receiver.
No further controls are needed. Follow the instructions included with the A-BUS
modules for operation information.
No further controls are needed. Follow the instructions included with the A-BUS
modules for operation information.
When the ABH 4 is used in the stand-alone mode with a source that is not
A-BUS/
A-BUS/
READY
, the method of operation varies depending on the specifics of the
installation:
• When a 12-volt adaptor is not connected to the ABH 4’s Status Input ¡,
the system is able to pass through IR commands from the remote modules
to turn on the host receiver, processor or preamplifier, but there is no power
to a remote module’s internal amplifier until an audio signal is sensed at the
ABH 4’s Audio Inputs £.
to turn on the host receiver, processor or preamplifier, but there is no power
to a remote module’s internal amplifier until an audio signal is sensed at the
ABH 4’s Audio Inputs £.
• When a 12-volt adaptor is connected to the ABH 4’s Status Input ¡, the
system is ready for full operation at all times, including pass-through of IR com-
mands from remote A-BUS modules as well as power to the remote modules’
internal amplifiers.
mands from remote A-BUS modules as well as power to the remote modules’
internal amplifiers.
The three LED indicators on the ABH 4 signify the following operational modes:
• The Status Indicator å lights when the system is activated either by con-
nection to an A-BUS/
READY
receiver that is turned on, when a signal is sensed
at the Audio Inputs £ or when a 12-volt power source is connected to the
Status Inputs ¡. This light indicates that the remote modules are active and
ready to accept and transmit commands.
Status Inputs ¡. This light indicates that the remote modules are active and
ready to accept and transmit commands.
• The Power Indicator ∫ lights when the AC Power Supply is connected to
the ABH 4 and/or when a connection is made between the ABH 4 and an
A-BUS/
A-BUS/
READY
receiver. This light indicates that the system is powered on and is
operational.
• The IR Indicator ç flashes whenever an IR command is transmitted through
the system.
Top-Edge Connections
¡ Status Input
™ Power Input
™ Power Input
£ Audio Inputs
¢ Expansion In Jack
∞ Expansion Out Jack
¢ Expansion In Jack
∞ Expansion Out Jack
Bottom-Edge Connections
§ Local IR Input Terminals
¶ IR Emitter Jacks
• A-BUS Outputs
• A-BUS Outputs
LED Indicators
å Status Indicator
∫ Power Indicator
ç IR Indicator
∫ Power Indicator
ç IR Indicator
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