1
Modules & Connecting Blocks
INSTALLATION INSTRUCTIONS
795-20
FOUR ZONE AMPLIFIED CONNECTING BLOCK
Fig. 1
Model 795-20 Four Zone Amplified Connecting Block
COMMON EMITTERS
ZONE EMITTERS
A
B
A
B
A
B
A
B
+12V
ZONE 1 ZONE 2 ZONE 3
ZONE 4
ZONE IR INPUTS
ZONE 4
ZONE 3
ZONE 2
ZONE 1
+12 IN G +12 IN G +12 IN G +12 IN G
POWER
10 9 8 7 6 5 4 3 2 1
795-20
FOUR ZONE AMPLIFIED CONNECTING BLOCK
The Model 795-20 is a Four Zone Amplified Connecting Block that allows control of elaborate multi-zone
audio/video systems. The zone input terminals permit the connection of any Xantech IR Receiver, Keypad
or controller device. Each zone output can control 2 or more pieces of equipment per zone, independent
of the other zones, via single or dual emitters or be direct wired to the IR input of Xantech Preamps, etc.
The 10 amplified common output ports can drive 10 single or 10 dual emitters or the IR input of Xantech
Controllers, etc., for control of common source equipment from any zone. Expansion beyond 4 zones can
be accomplished by adding the 796-20 Six Zone Expander, for a total of 9 zones. The 795-20 utilizes active
isolation devices for elimination of internal zone-to-zone crosstalk as well as high speed amplification to the
common output ports for operation with a wide range of IR controlled products.
SPECIFICATIONS
• Zone Inputs: Four 3-screw terminal connectors to interface with all Xantech 3-lead IR receivers and/or
keypads.
• Outputs: 8 Zone emitter ports and 10 common emitter ports (3.5mm mini mono phone jacks).
• Green LED test indicators are connected in series with the zone outputs and in series with each common
emitter port. They will only light when the connected emitter or device is conducting current.
• Zone output ports A and B and the Common ports are parallel driven and have a 470-Ohm resistor in series
with each port for lower power operation. This prevents overload of IR sensors on A/V componets and
also allows the use of models 282, 283, 284 & 286 series Mini Emitters, Xantech Controllers, Preamps,
etc. in any combination.
• Power requirements: 12 volts DC. Use 781RG or 782-00 Power Supplies.
• 2.1 mm coaxial power jack.
• Dimensions: 13-3/8" W x 1-7/8" D x 1" H
INSTALLATION
Fig. 2
, illustrates a typical installation using the 795-20 in a 4-zone system. A variety of Xantech IR
Receivers and a keypad are shown in the various zones to illustrate the flexibility of the system. When
configuring a system, please keep the following items in mind:
1. More IR Receivers may be wired in parallel at each zone input, if desired, up to a total of twelve. More
than twelve is not recommended, even in a zoned system, because IR noise picked up by the many
IR receivers may cause erratic operation and reduce remote control range.
Note:
This restriction does not apply to Smart Pad™ keypads, because they are not IR receivers.
Keypads may be added virtually without limit, provided power supply requirements are taken into
consideration. See item 3.
2. Be sure to connect the +12V, IR OUTput and Gnd of each IR receiver and keypad to the respective
+12
,
IN
and
G
terminals of the zone inputs as shown.
