Niles MSU250 Guide

MSU250

INFRARED MAIN SYSTEM UNIT

MSU250

BLENDING HIGH FIDELITY AND ARCHITECTURE®

INSTALLATION & OPERATION GUIDE

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 24

TABLE OF CONTENTS

Introduction 1

Features and

Benefits 2

MSU250 Parts

Guide 4

Installation

Considerations 5

Installation 8

Testing the

IR Extender

System 11

Power Status 13

Trouble-

Shooting 16

Specifications 19

Contents 19

Addendum 20

NFRARED MAIN SYSTEM UNIT

MSU250

Infrared Main

System Unit

Introduction

An infrared (IR) extender system enables you to control your IR

remote controlled A/V equipment from a remote location. This

enables you to place your A/V components out of sight

(behind cabinet doors, in the rear of a room, or in a different

room) and still conveniently operate your equipment.

Installed at the equipment location, the MSU250 receives the

IR commands transmitted from your existing hand-held

remotes in that room. The commands are carried via a small

category 5 cable to your A/V equipment in another room, and

instantly “repeated”.

The MSU250 is compatible with all current Niles infrared systems.

It may be used along with the Niles TS100, MS100, MS200,

WS100, MVC100IR and CS100 IR sensors or the IntelliPad®.

The model MSU250 is an IR Main System Unit. It is one of

three elements that make up an infrared extender system:

• IR Main System Unit—Models MSU140, MSU250,

MSU480 and MSU440Z.

• IR Sensors/Keypads—Models WS100, TS100, MS100,

MS200, CS100, MVC100IR and the IntelliPad.

• IR Flashers—Models MF1, MF2, MF1VF, MF2VF and

the IRB1.

An IR sensor expansion unit, Model IRH610, is available for

IR repeater systems used in more than six rooms.

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 1

NFRARED MAIN SYSTEM UNIT

Features and Benefits

The MSU250 offers a number of improvements over other

IR Extender Main System Units:

• Universal system—compatible with virtually all brands

of A/V equipment and remote controls.

• Accommodates two IR sensors or keypads.

• Provides five flasher outputs via convenient 3.5mm jacks.

• System feedback LED confirms operation.

• 12VDC Output—This is useful for triggering external

devices and system automation.

• 3-30V AC/DC status input. Provides system status to connected

sensors and keypads.

• Expandable—an IRH610 IR expansion hub can be used

to provide additional inputs.

•2x variable flasher out (4 + 5).

• Printed circuit board design assures high reliability.

• Low profile and small footprint with integrated mounting

wings that allow for both horizontal and vertical installation.

• UL listed regulated in-line power supply with universal

voltage capability.

• Two year parts and labor warranty.

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 2

3-30V

AC/DC

STATUS

NFRARED MAIN SYSTEM UNIT

Niles IR

Flasher

MSU250

WS100 IR Sensor

Power, IR data, status signal and ground

via category 5 wire

Stereo Receiver

12VDC power supply

(supplied with the

MSU250 Main

System Unit) plugged

into an unswitched

AC outlet powers

the system

12VDC power supply

(Not Supplied) plugged

into the switched outlet

Niles stock#FG00665

Figure 1

Connecting the WS100 to a Niles MSU250

Main System Unit broadcasting a status

feedback signal.

In a typical system, the MSU250 provides

for the connection for two remote room

sensors (or keypads) and will control multi-

ple audio/video components via its flasher

connections.

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 3

3-30V

AC/DC

STATUS

NFRARED MAIN SYSTEM UNIT

MSU250 Parts Guide

1. 12VDC Jack – Provides 12 volt DC power to MSU

via a regulated power supply.

2. IR Flasher Outputs – 3.5mm jacks provide output

for either single or dual (MF1, MF1VF, MF2,

MF2VF) low-level flashers.

3. 3-30V AC/DC Status – 3.5mm jack provides

system status to sensors/ keypads via a 12V

power supply attached to a switched outlet on

the system receiver or a 12V trigger output.

4. 12V Output – When 12 volts is detected at the

status jack (#3) the 12V output jack will output

12V/200mA DC. This is useful for triggering

external devices and system automation.

5. Status/IR Confirmation LED – This LED performs

two functions: (1) it provides a visible indication

of system status via a green LED and (2) confirms

the reception of IR data via a blinking blue LED.

6. Flasher Hi/Lo switch – Setting these switches to

the appropriate position allows you to connect

either a high output flooding flasher (IRB1) or

low output microflashers (MF1, MF1VF, MF2,

MF2VF).

7. Sensor Input – Removable quick connect sensor

plug for connection of IR sensors to the system.

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Installation Considerations

Placement of the MSU250

Place the MSU250 conveniently close to the equipment it will

be controlling. Generally, the unit is placed in a concealed

location because its controls and indicators are only used dur-

ing installation. Placement possibilities include:

1) Table-top (on the floor or shelf behind the equipment)

(Figure 2).

2) Wall-mount (affixed to the back of the equipment cabinet

or a nearby wall) (Figure 3).

NFRARED MAIN SYSTEM UNIT

IMPORTANT

Do not place the

MSU250 on top of

or directly behind

a television set.

Some television

sets produce

intense electro-

magnetic interfer-

ence which may

disable your IR

extender system.

Figure 2: Table-top placement

Affix the enclosed self-adhesive

rubber feet to the base of the MSU250.

Self-Adhesive

Rubber Feet

123

POWER

+12V DC FLASHER OUTPUTS

MSU

IR MAIN SYSTEM UNIT

INPUT 1

Figure 3: Wall-mount placement

Use sheetrock screws.

1234

POWER

+12V DC

3-30V

AC/DC

STATUS

FLASHER OUTPUTS

MSU140

IR MAIN SYSTEM UNIT

INPUT 1

MSU250 Base

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 5

Wiring

From every IR Sensor location you must “home-run” a

category 5 cable back to the MSU250. Home run means that

an individual cable is connected between each IR Sensor and

the MSU250 (Figure 4).

NFRARED MAIN SYSTEM UNIT

“TECH TIP”

Wire size is expressed

by it’s AWG (American

Wire Gauge) num-

ber. The lower the

AWG number, the

larger the wire, i.e.,

20 AWG wire is physi-

cally larger than

22 AWG.

IMPORTANT – AVOIDING INTERFERENCE

Avoid locating any of the cables, Sensors, Keypads or the

Main System Unit near any potential sources of Electro-

Magnetic Interference (EMI), such as light dimmers, speed

controls for ceiling fans, electrical ballasts, television sets,

large motors, heaters or air conditioners.

Figure 4: Home run the

sensor cable from the

sensor to the MSU250.

Remotely Located

IR Sensors

SENSORS IN

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 6

IntelliPad Wiring

When you are placing both a IntelliPad and a sensor (or two

keypads) in one room you may “daisy-chain” using a single

cable. A cable is run between the keypad and the sensor and a

single cable is run from either the sensor back to the MSU250.

To prevent data feedback an IN4003 Blocking Diode is inserted

on the data (IR) line between the IntelliPad and the sensor.

The cathode, or blocking side of the diode, faces the IntelliPad.

(Figure 5). Note that status wire is connected to IntelliPad’s sta-

tus (+) connector.

Sensor/Keypad Cable

The MSU250 connects to IR sensors and the IntelliPad with

category 5 cable, with a maximum cable run of 500'.

Flasher Cable

Niles infrared flashers come supplied with a 10 foot 2-conduc-

tor 22 gauge cable. Should you need to extend it, use a 16

gauge 2-conductor cable (“zip-cord”). Shielding is not neces-

sary for a flasher. Flasher wires can be extended up to 200'.

NFRARED MAIN SYSTEM UNIT

3-30V

AC/DC

STATUS

Figure 5: An IR sensor

cable is “daisy-chained”

from an IntelliPad, to a

sensor and back to the

MSU250.

IN4003

Blocking

Diode

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 7

3-30V

AC/DC

STATUS

Installation

Before you begin, make sure that the sensor/keypad cables,

the flasher cables and the 12VDC power supply cable will all

reach the proposed location of the MSU250. Mark the cables

with labels describing where the cable originates (rather than

which terminal on the MSU250 it should connect).

For proper installation, follow the steps outlined below in the

correct order. If you discover a fault in the course of installa-

tion, go on to the Troubleshooting Guide before continuing

with the next installation step.

NFRARED MAIN SYSTEM UNIT

TOOLS

REQUIRED

• 1/8" Standard

Slotted

Screwdriver

• Wire Stripper

WS100 Sensor

To unswitched

AC Outlet

Figure 6:

MSU250

Installation.

MSU250 Sensor

Connection

MSU250

To Niles

IR Flasher To 12V DC Power

Supply Plugged into

an switched AC Outlet.

Typically found in

back of a receiver.

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 8

NFRARED MAIN SYSTEM UNIT

STEP DESCRIPTION

1. Connect and test the

power supply. If it tests OK,

unplug the connector from

the power socket and

proceed.

A) Plug the supplied 12VDC power supply into an unswitched 120

volt AC outlet, 50-60 HZ .

B) Plug the connector into the socket marked “Power” on the

MSU250.

C)If the Power LED does not light, test the unswitched 120 volt

AC outlet, 50-60 HZ with another appliance. If the outlet tests

OK, you have a defective power supply which must be replaced

for you to continue.

2. Connect the Sensor/Keypad

cable the Sensor input. A) Strip 1/4" of insulation from the end of each wire. Tightly twist

the end of each wire until no frayed ends remain.

B) Use a small flathead screwdriver or your thumbnail to raise the

locking tabs, exposing the holes on the removable connectors.

C)Insert each wire into the appropriate hole on the removable

connector plug (Figure 6), and snap the locking tab down.

To help you, the connector plug is keyed. Insert the smooth

side of the connector plug into the smooth side of the socket.

Don’t force the scalloped side of the connector plug into the

smooth side of the socket.

DS00328ACN_MSU250.qxp 2/27/04 10:10 AM Page 9

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