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Keypads and IR Sensors
Keypads and IR sensors enable the user to control the Niles A4.6Ci MultiZone Preamplifier and its connected
source components. The source components’ IR commands are programmed into the Niles A4.6Ci MultiZone
Preamplifier. These commands are then triggered when the user presses a keypad button or issues a Niles IR
command to an IR sensor.
Each zone on the A4.6Ci has a corresponding RJ-45 keypad connector that is used to connect one Solo™ or
Select™ Master Keypad Module. Each Master Keypad Module can be mated with one optional Numeric™ or
Transport™ Accessory Keypad Module using an included jumper cable (see Connections). The Solo™ or Select™
Master Keypad Modules connect to the A4.6Ci with a "home run" of four-pair twisted cable, terminated with
RJ-45 connectors.
An IR Sensor can be included in any zone and connects directly to the Solo
™
or Select
™
Master Keypad Module
(see the Connections section of this manual for more details). A three-wire to RJ-45 adapter is available from Niles
(see Accessories) for IR Sensors installed with two-conductor shielded cable rather than four-pair twisted cable.
Adding an IR Sensor enables the Niles R-4 Accessory hand-held IR remote, or a learning remote control
programmed with Niles R-4 IR commands, to control the A4.6Ci and the connected source components. In
addition, a source component’s actual IR commands (i.e., provided by the component’s original remote con-
trol or a learning remote control programmed with these IR commands) can be used with the IR sensor to con-
trol the source components.
Important Note: The A4.6Ci does not provide individual operation of identical source components when using a source
component’s factory remote through an IR Sensor (see Identical Source Components on page 35 for more details).
Source-Component Automation
There are two methods of controlling the power ON/OFF of the source components.
1. Synchronized IR - In Figure 4, the DSS receiver’s power ON/OFF is synchronized via a video signal con-
nected to the A4.6Ci. When the Master Key/Source Button for the DSS is pressed, the A4.6Ci checks for a
video signal at the Sync Input corresponding to the DSS. The A4.6Ci issues the power command to turn the
DSS ON only when no video signal is present and the DSS is OFF.
When the Off Key/Button is pressed in a zone, the A4.6Ci checks to see if any other zones are on (including
the Home Theater zone sharing sources). The power command for turning the DSS OFF is issued only if that
zone is the last zone turning OFF in entire system and a video signal is present at the Sync Input correspon-
ding to the DSS.
Important Note: RCA Sync Inputs also can detect 12V for use with Niles external sensing devices, (i.e., the
LS-1 Light Sensor and the APC-2 Current Sensing Device). See Source Power Synchronization on page 41 for
more information.
2. Latching Power - In Figure 4, AC power to the DVD and CD changer is turned on and off via the switched
AC outlets of a Niles AC-3. The AC-3 is activated by the 12V control output of the A4.6Ci when any one of the
six zones is ON (including the Home Theater Zone sharing sources).
Each Master Key on the Solo
™
and Select
™
Master Keypad Modules is programmable with a sequence of IR
commands for their respective source component. Commands included in the sequence are typically the Play
or Channel commands to start a source playing or to select a particular music or radio station after the source
has been selected.
Flasher Outputs
Niles IRC-2P MicroFlashers
™
connect to the numbered flasher outputs on the rear panel of the Niles A4.6Ci
MultiZone Preamplifier. Flashers send IR commands to the individual source components for control. An
IRC-1P Flooding Flasher can be connected to Flasher #4 to control more than one source component.
14
SYSTEM CONFIGURATIONS