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Installation Guide

IRX-PP38 

NetLinx Plasma-Proof IR Sensor

For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).

03/08

©2008 AMX. All rights reserved. AMX and the AMX logo are registered trademarks of AMX.

AMX reserves the right to alter specifications without notice at any time. 

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 93-0460

 

REV: B 

IRX-PP38 IR Sensor Overview

The IRX-PP38 IR sensor is designed to provide optimum functionality for IR 
reception and transfer to high-end devices such as plasma televisions which 
sometimes can have issues with other receivers. The IRX-PP38 is compatible 
with AMX’s newest NI-700 and NI-900 NetLinx Master Controllers.  

IRX-PP38 Plasma-Proof Components

The terminal IR sensor is wired to the main unit via a 34-inch long (2.83 feet) 
cable. The main unit provides both an on-board blue LED (to confirm IR 
reception) and a 3-pin mini-Phoenix connection used to wire the sensor to the IR 
RX (sensor) port on the back of a compatible AMX device (such as the 
NI-700/900 Controllers).

FIG. 1  

IRX-PP38 connector

Wiring the IRX-PP38 IR Sensor

The maximum wiring distance between the IRX and a target NI Controller (such 
as the NI-700 and NI-900) is 

200 feet 

(60.96 meters). FIG. 2 displays a sample 

wiring diagram which shows how you can wire a single Controller for 
communication to two separate IRX IR sensors.

FIG. 2  

Sample wiring diagram between NI Controller and multiple IRX sensors

Installation Overview

Note: 

Never pre-tin wires for compression-type connections.

1.

Strip 0.25 inch (6.35 mm) of insulation off all wires.

2.

Insert each wire into the appropriate opening on the IRX-PP38 connector 
according to the wiring diagrams and connector types described in FIG. 2. 

Note:

 Always match the wiring on each end of these connections. If you 

are using a red insulated wire to supply power on one connector, make 
sure you thread this same wire into the PWR connector at the other end.

3.

Insert each wire into the appropriate opening on the NI’s rear IR RX 
connector, according to the wiring diagrams and connector types described 
in FIG. 2.

4.

Tighten the screws to secure the wires into their respective connectors. 

Note: 

Do not tighten the screws excessively. Doing so may strip the 

threads and damage the connector.

5.

Remove the cover off the adhesive foam on the IR sensor.

6.

Adhere the adhesive flat side of the terminal plasma-proof IR sensor to any 
object within the line of sight of your remote. Make sure the raised oval side 
of the terminal IR sensor (opaque) is facing outwards and can receive the 
IR signal from the remote (such as a Mio R-1).

FIG. 3  

Equipment wiring overview

You can use the IRX-PP38 in any installation where a previous AMX IRX device 
was used. For illustration purposes, the NI-900 is used in this document’s wiring 
diagrams.

Note

: The IRX- PP38 uses the IR input port on an NI-700/900 controller (one 

IRX-PP38 per NI-700/900).

IRX-PP38 Specifications

Current Draw:

• 10 mA  @ 12VDC

Dimensions 
(HWD):

• 0.56" x 3.88" x 1.06" (1.43 cm x 9.84 cm x 2.70 cm)

Features:

• Relies on both optical and electronic filtering to reject 

interference from fluorescent lamps and plasma displays.

• Supports an AMX IR frequency of 38 KHz.

Mounting:

• Main unit can either be hidden behind other electronics or 

secured to a surface near the target device.

• Maximum wire distance to an NI700/900: 200 feet (60.96 

meters)

IR Sensor 
Components:

• IR Feedback LED (blue). LED illuminates when it receives an IR 

signal.

• 3-pin mini-Phoenix connector. Wires the IRX-PP38 to the IR 

receive port on compatible AMX devices.

• Terminal IR sensor. This sensor adheres to any object within the 

line of sight of your remote and enables you to receive control 
signals from either an IR Emitter or a hand-held remote control.

• Two screw openings. These openings (located at opposite ends 

of the main IR sensor) are used to secure the unit. This portion 
of the IRX-PP38 is kept out of sight whereas the terminal IR 
sensor adheres to the IR window.

Included 
Accessories:

• Adhesive foam (pre-installed onto the terminal IR sensor)
• IRX-PP38 Installation Guide (93-0460)
• Two black metal screws (#2 x 3/8”)

34

” (

0.

86

 m

)

IR feedback LED (blue)

Wired to
NI-700/900

Terminal
Plasma-proof
IR sensor

20

0

 F

e

e

t M

A

X

PWR

GND

IN

AUX

IRX-PP38 #2

IRX-PP38 #1

To the Integrated

Top view

Top view

SIG

 (signal)

+12

 VDC

GND

Controller’s rear

IR RX connector

SIG

 (signal)

+12

 VDC

GND

This connection may

vary among different

 compatible AMX devices

Top view

IRX-PP38

Plasma TV

NI Controller

(with IRX port)

Mio R-1

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