Niles Audio MSU250 User Manual
INSTALLATION & OPERATION GUIDE
MSU250
MSU250
INFRARED MAIN SYSTEM UNIT
B LENDING H IGH F IDELITY AND A RCHITECTURE
®
MSU250
Infrared Main
System Unit
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NFRARED MAIN SYSTEM UNIT
TABLE OF CONTENTS
Introduction 1
Features and
Benefits
MSU250 Parts
Guide
Installation
Considerations
Installation 8
Testing the
IR Extender
System
Power Status 13
Trouble-
Shooting
Specifications 19
Contents 19
Addendum 20
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16
Introduction
An infrared (IR) extender system enables you to control your IR
remote controlled A/V equipment from a remote location. This
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4
5
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.
®
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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.
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3-30V
AC/DC
STATUS
IN
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NFRARED MAIN SYSTEM UNIT
12VDC power supply
(supplied with the
MSU250 Main
System Unit) plugged
into an unswitched
AC outlet powers
the system
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 multiple audio/video components via its flasher
connections.
Niles IR
Flasher
MSU250
Power, IR data, status signal and gr ound
via category 5 wire
Stereo Receiver
12VDC power supply
(Not Supplied) plugged
into the switched outlet
Niles stock#FG00665
WS100 IR Sensor
3
3-30V
AC/DC
STATUS
IN
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NFRARED MAIN SYSTEM UNIT
MSU250 Parts Guide
1
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.
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3
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4
5
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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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IMPORTANT
1
2
3
POWER
+1
2V DC
FLASHER OUTPUTS
MSU
IR MAIN SYSTEM UNIT
INPUT 1
1234
POWER
+12V DC
3-30V
AC/DC
STATUS
IN
FLASHER OUTPUTS
MSU140
IR MAIN SYSTEM UNIT
INPUT 1
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.
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NFRARED MAIN SYSTEM UNIT
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 during 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).
MSU250 Base
Self-Adhesive
Rubber Feet
Figure 2: Table-top placement
Affix the enclosed self-adhesive
rubber feet to the base of the MSU250.
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Figure 3: Wall-mount placement
Use sheetrock screws.
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12
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NFRARED MAIN SYSTEM UNIT
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).
Figure 4: Home run the
sensor cable from the
sensor to the MSU250.
SENSORS IN
IMPORTANT – AVOIDING INTERFERENCE
Avoid locating any of the cables, Sensors, Keypads or the
Main System Unit near any potential sources of ElectroMagnetic Interference (EMI), such as light dimmers, speed
controls for ceiling fans, electrical ballasts, television sets,
large motors, heaters or air conditioners.
Remotely Located
IR Sensors
“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.
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3-30V
AC/DC
STATUS
IN
Figure 5: An IR sensor
cable is “daisy-chained”
from an IntelliPad, to a
sensor and back to the
MSU250.
NFRARED MAIN SYSTEM UNIT
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 status (+) connector.
IN4003
Blocking
Diode
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-conductor 22 gauge cable. Should 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'.
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