JUNO FrontRow - Installing optional sensors

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Installing optional sensors
The FrontRow Juno Tower has a high sensitivity infrared sensor that is capable of covering a typical classroom, but if you
need additional infrared coverage, your Tower comes with 2 sensor ports for installing ceiling, wall or IR speaker sensors.
When installing additional sensors, proper placement of the sensors is critical for optimal system performance. (If you are
not installing optional sensors, proceed to page 30).)
SENSOR CABLE
The sensor cables are sensitive to electrical noise.
• DO NOT use a splitter with the sensor cable.
• AVOID routing the sensor cable next to other cables or electrical systems (e.g., other electrical conduit, Ethernet
cable, video cable, fluorescent light ballast, etc.). Leave at least 6 in. (15cm) space around the sensor cable.
• Excess cable can be coiled, tied and placed safely in a plenum space. DO NOT place the sensor coil near
other cables or electrical systems (e.g., other electrical conduit, Ethernet cable, video cable, fluorescent light
ballast, etc.).
• Localregulationsmayrequireplenum-ratedcableifusedinaplenumspace.
• FrontRowrecommendsusingthefactory-suppliedsensorcables;however, ifyouneedshorterorlongercables
to meet the needs of a specific job, observe the following guidelines for best results:
 •MinimumCableLengthis3feet.
 •MaximumCableLengthis100feet.
 •Thedifferenceincablelengthbetweenthetwoexternalcablesis50feet.
Example:
 •Ifcable1is10feet,thencable2isamaximumof60feet.
 •Ifcable1is50feet,thencable2isamaximumof100feet.
CAVEATS:
•CablesmustbeRG-59Uwithatleast90%shielding(doublerecommended)withproperconnectors.
• FrontRow is not responsible for performance when non FrontRow cables are used.
Sensor Mounting
 • DO NOT mount the ceiling sensor or wall sensors in direct
sunlight as it will greatly reduce performance.
 • Theceilingsensormusthaveaclearviewofthecoverage
area and must be mounted parallel to the floor to function
optimally (see figure). If drop lights are used in the room,
wall sensors or IR speakers may be a better option. Or, a
drop mount* may be used to lower the ceiling sensor.
Light
Fixture
Ceiling Sensor
Orientation and
coverage optimized
*
*drop mount
not supplied by FrontRow
Classroom
Ceiling
Sensor
X Sensor performance reduced:
Not parallel to floor AND blocked
by light fixtures.
Ceiling Sensor Installation
Sensor cable
Receiver
Amplifier
Interference and IR Coverage
• AdjacentclassroomsthatuseFrontRowinfraredsystemscaninterferewitheachotheriftheroomsareseparatedbywindows.
The windows allow the infrared light to “escape” from the classroom only to be picked up by the sensors in the adjacent
classroom, causing interference and “cross talk”. Be sure to recommend window coverings to the greatest extent practical
when using the system.
• Infraredlightreflectsbetteroffofwhiteandglossysurfaces.Theceilingsensorcanbeplacedtohelpprovidecoverage
in areas where the signal may be weak due to insufficient infrared reflection.
Sensor symbols:
= ceiling sensor
= wall sensor