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TABLE OF CONTENTS

Introduction

1

Features and
Benefits

2

MSU140 Parts
Guide

4

Installation
Considerations

5

Installation

8

Testing the
IR Extender
System

11

Power Status

13

Trouble-
Shooting

15

Specifications

17

Contents

17

Addendum

18

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MSU140

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 MSU140 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 MSU140 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 MSU140 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, IntelliPad, MVC100IR.

• IR Flashers

—Models MF1, MF2, MF1VF, MF2VF.

An IR sensor expansion hub, Model IRH610, is available to 
provide additional sensor inputs to your system.

DS00329BCN-MSU140-1.qxp  8/17/05  11:26 AM  Page 1

Summary of Contents for MSU140

Page 1: ...40 INFRARED MAIN SYSTEM UNIT MSU140 B L E N D I N G H I G H F I D E L I T Y A N D A R C H I T E C T U R E I N S T A L L A T I O N O P E R A T I O N G U I D E DS00329BCN MSU140 1 qxp 8 17 05 11 26 AM Page 20 ...

Page 2: ...ent location the MSU140 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 MSU140 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 T...

Page 3: ...cks System feedback LED confirms operation 3 30V AC DC status input Provides system status to con nected sensors and keypads Expandable an IRH610 IR expansion hub can be used to provide additional inputs Printed circuit board design assures high reliability Low profile and small footprint with integrated mount ing wings that allow for both horizontal and vertical installation UL listed regulated i...

Page 4: ... MSU140 Main System Unit plugged into an unswitched AC outlet powers the system 3 30V AC DC power supply Not Supplied plugged into the switched outlet Niles Stock FG01035 Figure 1 Connecting the WS100 to a Niles MSU140 Main System Unit broadcasting a status feedback signal In a typical system the MSU140 provides for the connection for one remote room sensor or keypad and will control multiple audi...

Page 5: ...tatus 3 5mm jack provides system status to sensors keypads via a 12 volt power supply attached to a switched outlet on the system receiver or a 12V trigger output 4 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 5 Sensor Input Removable quick connect senso...

Page 6: ... 3 5 I N F R A R E D M A I N S Y S T E M U N I T IMPORTANT Do not place the MSU140 on top of or directly behind a television set Some television sets produce intense electromagnetic interference which may disable your IR extender system Figure 2 Table top placement Affix the enclosed self adhesive rubber feet to the base of the MSU140 Self Adhesive Rubber Feet POWER 12V DC Figure 3 Wall mount plac...

Page 7: ...arger the wire i e 20 AWG wire is physically 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 f...

Page 8: ...n the data IR line between the Intellipad and the sensor The cathode or blocking side of the diode faces the Intellipad See Figure 5 Note that the status wire is connected to Intellipad s status connector 7 I N F R A R E D M A I N S Y S T E M U N I T 1 2 3 4 POWER 12V DC 3 30V AC DC STATUS IN FLASHER OUTPUTS MSU140 IR MAIN SYSTEM UNIT INPUT 1 Figure 5 An IR sensor cable is daisy chained from an In...

Page 9: ... you need to extend it use a 16 gauge 2 conductor cable zip cord Shielding is not necessary for a flasher Flasher wires can be extended up to 200 feet 8 I N F R A R E D M A I N S Y S T E M U N I T TOOLS REQUIRED 1 8 Standard Slotted Screwdriver Wire Stripper WS100 Sensor To unswitched AC Outlet Figure 6 MSU140 Installation MSU140 Sensor Connection MSU140 To Niles IR Flasher To 3 30V AC DC power su...

Page 10: ...placed 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 Figu...

Page 11: ...ere is a short between 12v and GND If IR Test LED is On or flickers blue there is a short between DATA and GND or interference is present Before you proceed to Step 4 consult the Troubleshooting Section beginning on page 14 4 Plug the flashers into the flasher outputs If you need to extend the wire use a 2 conductor 16 gauge or larger See Tech Tip on page 6 Route the connecting wire to the IR Main...

Page 12: ...h your VCR CD DVD or Tape player remote control Operation should be identical to standing in front of the component with the remote control pointed directly at the sensor window 3 Maximum Range between the Remote Control and the Niles IR Sensor is similar to the maximum range between the Remote Control and the A V component s IR sensor Typically a remote control with two batteries will have a 15 t...

Page 13: ... a status signal to sensors or an IntelliPad without running any additional wiring Built into the MSU140 is a Niles status signal generator When the MSU140 sees 3 30V AC DC at the status jack it broad casts a status signal over your existing IR sensor wires Any sensor or IntelliPad connected to one of your sensor wires will display the power status of your system DS00329BCN MSU140 1 qxp 8 17 05 11...

Page 14: ...he power status cable up to 200 feet Checking the Power Supply It is possible to check the status power supply itself and any connections that were made to extend the cable by inserting the status plug into the Power jack on the MSU140 If the Power LED lights the status power supply and connections are ok If the Power LED does not light check all connections and replace the power supply if necessa...

Page 15: ...POWER 12V DC 3 30V AC DC STATUS IN FLASHER OUTPUTS MSU140 IR MAIN SYSTEM UNIT INPUT 1 3 30V AC DC power supply plugged into an unswitched outlet Niles stock FG01035 IRH610 Expansion Hub MSU140 Main System Unit Infrared Sensors Figure 8 Wiring diagram for expanding a system using the IRH610 Infrared Expansion Hub DS00329BCN MSU140 1 qxp 8 17 05 11 26 AM Page 14 ...

Page 16: ...no operation Systematically troubleshoot the wiring by 1 Testing your power supply connections 2 Testing your Sensor connections 3 Testing your Flasher connections 4 Testing your cable for shorts and opens 2 Optical or Electromagnetic Interference Direct sunlight reflections neon signs and other sources of infrared light or television sets light dimming controls and other sources of electromagneti...

Page 17: ...n IR sensor in the same room as a flasher and you have some low level noise or interference an optical feedback loop can occur which will interfere with proper operation Symptoms can include poor range intermittent operation or no operation Solution You can eliminate optical feedback by covering all flashers with the supplied IR blocking covers There are many methods for reducing interference Whic...

Page 18: ...Individual home runs of category 5 cable from each sensor keypad Unit Dimensions 4 3 4 wide x 1 1 4 high x 2 deep Power Requirements 12VDC power supply included Contents MSU140 1 Screwless Connectors 1 In line Power Supply 1 Self Adhesive Rubber Feet 4 I N F R A R E D M A I N S Y S T E M U N I T DS00329BCN MSU140 1 qxp 8 17 05 11 26 AM Page 17 ...

Page 19: ...stor Using the MSU140 with the IntelliControl Home Theater automation system When connecting an MSU flasher output to an IntelliControl Home Theater port a 150 Ohm resistor must be placed between the data and the ground line of the IntelliControl IR sensor input see figure above No resistor is needed if the MSU is being connected to the 2nd Zone port of the IntelliControl DS00329BCN MSU140 1 qxp 8...

Page 20: ...iles Audio Corporation Because we strive to improve our products All other trademarks are the property of their respective owners Niles reserves the right to change product specifications without notice The technical and other information contained herein is not intended to set forth all technical and other specifications of Niles products Additional information can be obtained on line at www nile...

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