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Modules & Connecting Blocks

INSTALLATION INSTRUCTIONS

793-10

SERIAL CONTROL COMBINER

Many brands of audio/video equipment provide a means of linking an audio receiver to a CD player to a tape
deck, etc., so that infrared control signals sent to the audio receiver will control the other devices as well.
This capability is often in the form of a serial data network where one pair of wires is “daisy-chained” from
device to device to device. The most common connecting link usually employs the 3.5mm miniature phone
plug.

In multi-zone systems, the audio receivers respond only to infrared control signals from a single zone, while
the common source equipment, such as CD players, tape decks, etc., must respond to control signals from
all zones.  The 793-10 connects to the Control Output (Network Out, Serial Out, etc.) jacks on each audio
receiver (up to five per 793-10) and combines the signals so that a stack of source equipment can be
controlled.  The serial control command signals are isolated with diodes in the 793-10 so that the audio
receivers do not interfere with each other.  If more than five audio receivers are used, multiple 793-10’s can
be connected together.

The 793-10 has five 

CONTROL INPUTS

 jacks which are connected to the Control Output (Network Out,

Serial Out, etc.) on the audio receivers by two-wire cables with 3.5mm miniature phone plugs on each end.
Connect the 

A

 jack, near the marking 

CONTROL OUTPUTS

, to the Control or Serial 

input

 on one of the

source devices using the same type of cable.  If more than one source device is used, they should be “daisy-
chained” in the usual manner.  For more zones than five, use the 

B

 jacks, near the marking 

CONTROL

OUTPUTS

, to connect from one 793-10 to another using the same type of cable described above.

The ten 

LOGIC POLARITY SELECTOR

 switches configure the 793-10 to respond to the control signal

polarity

 used by the particular brand of equipment.  Since the 793-10 can only be used in single-brand

installations, all of the switches are set together.

• For 

Active Low

 equipment such as Pioneer, Luxman and Denon, set switches 1, 3, 5, 7, and 9 

ON

 and

switches 2, 4, 6, 8, and 10 

OFF

.

• For 

Active High

 equipment such as some models of Marantz, Philips and Sony, set switches 1, 3, 5, 7,

and 9 

OFF

 and switches 2, 4, 6, 8, and 10 

ON

.

NOTE: 

 The 793-10 works with single-brand installations only and requires no power supply.

5-29-97

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