OWL HOOTS HO-850 User manual

HO-1300
High Output Optical Talk Set (HOOTS)
HO-850
Operations Guide
Version 1.3
Date: August 10, 2006
HOOTS
High Output Optical Talk Set
Multimode
Operations Guide
Optical Wavelength Laboratories
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OWL
5 Commonwealth Ave
Woburn, MA 01801
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

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HOOTS Optical Talk Set
We designed the HOOTS to be economical in order to be sold as an alternative to walkie-talkies. Optionally,
they can be embedded as a permanent part of a fiber network installation. Use it during the installation for
end-to-end voice communications. After installation, leave it attached to a pair of unused fibers in the patch
panel. This way, the HOOTS can be used by communications personnel any time operations or management
functions need to be performed in the fiber cable closet.
HOOTS stands for High Output Optical Talk Set. There are two configurations of the HOOTS: 850nm (HO-
850) or 1300nm (HO-1300). The transmitter in the HOOTS also serves as a calibrated -20.0 dBm multimode
light source. It uses our LED technology to convert your voice into optical signals for full-duplex voice
communications over a pair of multimode fibers. The HOOTS is a reliable alternative to wireless
communications systems, and is very simple to use. Communications over optical fibers with the HOOTS
offers both security and electromagnetic immunity.
Each HOOTS comes standard with 2 talk set units (one for both ends of the fiber) in a hard-shell carrying
case, and each unit comes with a headset, headset adapter, protective rubber boot, lanyard, 9-volt battery,
and a CD-ROM based operations guide.
General Description
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General Features
LED Transmitter Connector - this port houses
a light-emitting diode that emits a continuous
beam of 850nm or 1300nm infrared light,
depending upon configuration, that is designed
to couple into multimode fiber. Connector type
is ST.
Power/Headset Stereo Jack - this stereo jack
serves a dual purpose as both the power switch
and the headset stereo jack.
Receiver Connector - this port houses a
photodiode that receives optical signals from
the transmitter on the opposite end of the fiber
for conversion to voice. Connector type is ST.
Receiver Indicator LED - this LED indicates
the presence of optical pulses used for voice
communications.
Transmitter Indicator LED - this LED indicates
the ON/OFF status of the talk set.
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HOOTS Optical Talk Set
to headset
to receive
fiber to transmit fiber
You will need a pair of fibers terminated into a
connector at both ends of the link in order to use the
HOOTS. Connect to the transmit and receive fibers to
the talk set connectors (as shown in the figure at right).
The other end must have its fibers connected opposite
to the other, i.e. the transmit fiber on one end is the
receive fiber on the other.
Connect the headset plug to the headset adapter, then
plug the headset adapter into the headset jack on the
HOOTS.
If the fibers are connected correctly, then both the
Transmit and Receiver LEDs will light, and
communications can begin.
If the LEDs are not lit, double-check to make sure that
the transmit and receive fibers are correctly positioned.
Operation
headset
adapter
headset
plug
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D = 20 dB / (1.5 dB/km) = 13.33 km
To calculate the talkset’s maximum communication distance:
D = R / A
where: D = talkset distance
R = dynamic range (HOOTS = 20 dB)
A= typical fiber attenuation at specified 8
Example (8 = 1300nm, R = 20 dB, A = 1.5 dB/km):
Note: the fibers used for communication may be different
than the example above. Consult the fibers data sheet for
its attenuation parameter.

HOOTS Optical Talk Set
1300nm +50/-10nm (HO-1300)
Initial Accuracy +/- .10dB @ 25 C
calibrated wavelengths
Spectral Width 35nm @ 850nm (HO-850)
Receiver Dynamic Range -20 to -40 dBm
Center Wavelength 850nm +/- 20nm (HO-850)
Dimensions (each unit) 4.94 x 2.75 x 1.28 in
Source Power -20 dBm into multimode
170nm @ 1300nm (HO-1300)
NIST traceable 850nm (HO-850) or 1300nm (HO-1300)
Key Specifications
Conforms to the Harmonized European Standards EN 61326-1 and EN 61010-1.
Maintenance and Calibration Procedures
Repair. Repair of this unit by unauthorized personnel is prohibited, and will void any warranty associated with
the unit.
Battery Replacement. The battery compartment is covered by a sliding plate on the back of the unit. One 9v
battery is required for operation.
Cleaning. For accurate readings, the optical connectors on the HOOTS and the connectors on the patch
cords should be cleaned prior to attaching them to one another. Minimize dust and dirt buildup by replacing
the dust caps after each use.
Warranty. The HOOTS comes standard with a two-year factory warranty, which covers manufacturer defects
and workmanship only.
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