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7/27/2019 Optical Handhelds Datasheet
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Acterna optical handheld testersOptical power meters, attenuators, light sources
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OMK-9 three wavelengths loss test kit
provides a complete solution for installers
and service providers who need to testsingle-mode fibers at wavelengths
1310, 1550 and 1625 nm.
Speeding-up the
test process
The Acterna TWINtestfeature doubles
the measuring speed for dual-wave-
length tests. Light source and optical
power meter synchronize automatically
and loss test results for both wave-
lengths are displayed on the power
meter.
The Auto-lambda mode sets and
detects the wavelength automatically,
preventing the possibility of measure-
ment errors caused by incorrect
settings.
Meeting test needs today and tomorrow
Acterna's comprehensive range of
handheld instruments and accessories
offers a complete solution for optical
field test. The range includes light
sources, power meters, attenuators
and complete test kits for every
application from laboratory testing
to commissioning and service.
A range of accessories including
adapters, cleaning tools and inspection
microscopes is also available.
Maximizing return on investment and
Keeping operating costs down
Acterna has been a pioneer in optical
handheld instrumentation for more
than 20 years with products which
are recognized worldwide for their
quality, reliability, ease of use and
low cost of ownership.
Acterna's range of handheld field test
kits and instruments is designed for
accuracy where it counts out in the
field.
All the Acterna fiber optic handheldtesters are calibrated to traceable
national standards, with a re-calibration
interval of three years, for long-term,
cost-effective reliability.
The rugged, shock resistant and
splash proof design protects the
instruments against damage in the
field and is designed to withstand
even the harshest treatment.
Operating costs are reduced through
the use of universally available
standard AA mignon batteries (dry
cells or re-chargeable) for up to
130 hours operating time. Battery
replacement in the field is quick and
easy.
The intuitive graphical user interface
ensures that all the instruments are
easy to use without the need for
lengthy training.
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Universal battery supply
Acterna handheld instruments use
standard AA mignon batteries drycells or re-chargeable for up to
130 hours operating time. Battery
replacement in the field is quick and
easy.
Windows-based software
allows Acterna's high performance
handheld instruments to be controlled
remotely, via the RS232 interface.
Test results can be transferred for
analysis and reporting. Data logging
parameters, including interval set-
tings, thresholds and start/stop can
be set remotely.
From physical layer test to system commissioning
Productivity is increasingly an issue in
installation and maintenance of fiber
optic networks. Speed and efficiencyin the field is key to maintaining quality
of service. That is why, for installers
and operators worldwide, Acterna
handhelds are the instruments of
choice.
The range includes instruments and
accessories for testing single mode
and multi-mode fibers in datacom and
telecom networks. High power meters
are ideal for dense wave division
multiplexing (DWDM) systems and for
CATV applications. Sensitive versions
of the instruments detect extremely
low power and long distance loss
test.
Handy pocket-sized versions are ideal
for everyday tasks. High performance
models offer additional features formore demanding applications.
Acterna's high
performance series
Acterna's high performance handheld
instruments combine high functionality
with straightforward operation and
compact design. The series offers
a wide dynamic range, coupled
with laboratory accuracy for reliable
measurement time after time.
Automated test procedures, data
logging, and PC-analysis software
ensure high productivity for field test
and office-based analysis of results.
OMK-19c high performance test kit
offers high power testing up-to
30 dBm for installation and servicingof DWDM, CATV/multimedia and
telecom systems.
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OMK-6 is an optical test kit including handy
pocket sized ins truments for use anywhere as
an everyday tool. It is easy to use and is idealfor a wide range of sin gle mode universal
telecom applications
Acterna's pocket-sized series
Acterna's pocket-sized handhelds
provide high accuracy measurement
in a simple, entry-level unit at anattractive price. Just 3.9 inches long,
these handy instruments provide all
the basic functionality needed for
fiber optic power and loss testing.
Straight-forward three-button oper-
ation and rugged design make them
ideal for a wide range of installation
and maintenance applications.
Innovation by design
Performing tests in the field can be
tricky. Technicians may need to work
in inclement weather or other difficult
conditions while being pressured for
time especially in repair work or
where schedules are tight.
Innovative measurement features,
designed to help preserve the integrity
of the field test procedures and speed
the process, differentiate the Acterna
range. Rugged design, built-in shock
absorbers, and a lengthy battery life
ensure long-term reliability.
Acterna's universal push pull adapter system matches all
common connector types
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OLC-65 the new premium class of optical handhelds
The Optical Level controller OLC-65 is
part of a new generation of fiber optic
testers. As industries first instrument
it combines an optical power meter
and a motor driven optical attenuator
in one compact handheld housing.
Together with a powerful controller
and its remote capabilities the OLC-65
offers a whole range of applications for
maintenance and system verification
tests.
Standard power meter
80 dB dynamic
In-line power meter
in service power control
Level Actenuator
set output power level instead of
set attenuation
Standard Attenuator
simulate link loss
margin tests
Level Controller
active stabilization of drifting input
power
Showing different operation modes of OLC-65
Optical Tx
Test Pattern
OLC-65
Electrical Rx
Rx Under Test
ONT-50
OTN Module
2.5/2.7G FEC
General test setup for receiver sensitivity testing
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Optical power meters
Requirements for standard, all-haul and high power applications
Measurement sensitivity
Secondary to wavelength range,
measuring range is often a deciding
factor when purchasing an optical
power meter. Sensitivity is an impor-
tant criterion for measurements at the
end of the fiber link, where very low
levels need to be recorded. However,
measurement sensitivity should
always be seen in connection with the
uncertainties allowed for the powermeter at these points. This is often
impossible if only the `good' calibra-
tion error is specified. For measure-
ments at the start of the fiber link or
directly downstream of an optical
amplifier, it is essential for the photo-
diode to be designed to withstand the
high optical power levels.
Since the ambient conditions normally
vary during operation, temperature
sensitivity plays an important role.
The internal resistance of the photo-
diode is reduced as the ambient tem-
perature rises.This leads to parasitic
currents (dark current), which mutilate
the actual signal. At the same time,
no benefit can be gained from a high
internal resistance in the photodiode
if, parallel to this diode resistance,
the surface resistance of the printed
circuit board drops to a critical value
as a result of moisture. The area
around the input amplifier thus needs
special protection. This is the only
way to ensure that very low levelsdown to approximately 80 dBm can
be recorded reliably in the long term.
Acterna's experience is a guarantee
for mature and reliable designs. An
alignment procedure (zeroing) can be
carried out if required, in order to
reduce the dark current to a minimum.
This is particularly advisable if low
levels have to be measured at widely
fluctuating temperatures.
Reference measurement and
measurement accuracy
The power meters must be calibrated
at the standard wavelengths, in order
to ensure that the measurements are
comparable and repeatable.
This is handled by the manufacturer
with the aid of a reference standard.
A very accurately specified optical
level can be derived from the nationalstandard thanks to the traceability of
the measurements. Accuracies of
+3% (+0.13 dB) can be achieved for
optical power meters in this way.This
value only applies under reference
conditions such as level and
temperature, and is often cited on the
manufacturer's specification sheet.
The user, however, measures under a
wide range of operating conditions.
Characteristic data that covers this
complete range is essential.
Figure 1: Optical power meter linearity alignment
Acterna specifies the non-linearities of all optical power meters for the
complete measurement range. All the instruments are aligned individually
prior to delivery. They also incorporate a ZER OING function (dark current
alignment), which ensures that their measurement accuracy remains
constant even under extreme temperature conditions.
dP/dB
0.2
0
0.2
0.4 60 40 20 0 20
23C 45C Power/dBmFigure 2: Spectral characteristic of detectors
Photodiodes are used for conversion.They have different spectral
characteristics, depending on the type of semiconductor. Silicon (Si) can
only be used in the first optical window. Germanium (Ge) and indium
gallium arsenide (InGaAs) diodes, on the other hand, are also suitable for
broadband signaling in the second and third optical window, where their
sensitivity is greatest. Ge diodes, which are used as a low-cost variant in all
three windows, are the most sensitive to temperature. Choosing the
correct wavelength and a sufficiently large dynamic range for the optical
laser source and receiver are crucial to the precision of the measurement
results.
Sl(A/W)
1.0
0.5GE (0C)
GE (23C)
InGaAs
= Values stored in the EPROM of the power meter
Si
850 1300 1550 l (nm)
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Spectral characteristics of detectors
Power meters for datacom and tele-
com applications all use photodiodes
for light to current conversion. They
have different spectral characteristics,depending on the type of semi-
conductor. Silicon (Si) can only be
used in the first optical window up to
1000 nm, whereas Germanium (Ge)
and Indium Gallium Arsenide (InGaAs)
diodes are suitable for broadband
detection in the second and third
optical windows up to 1700 nm,
where their sensitivity is greatest.
Ge diodes are the best compromise
for standard applications as they
cover a broad spectral range, are
quite sensitive, and competitively
priced. InGaAs photodiodes are
more expensive but offer superior
performance particularly at higher
wavelengths (41500 nm).
All photodiodes are wavelength
dependant so it is essential to verify
the meter is set to the correct system
wavelength according to factory
calibration. With an Acterna testsource, wavelength setting is simple.
The source sends out an identification
signal which is received by the meter
and processed to set the right
wavelength correction (Auto-Lambda
mode).
One frequently overlooked aspect
of optical power measurements is
the fact that the device under test
(DUT) may deviate from its nominal
wavelength. Consequently, measure-
ment errors are relevant not only
at the standard wavelengths, but
also within windows of+20 nm, for
example.
High power measurement on systems
with optical amplifiers (DWDM, CATV)
Power meters used for measurements
on these systems must be capable
of processing high input levels.Power meters for high levels must be
designed for reliable long term
operation. It is important to note that
+30 dBm represents a power of one
Watt which also creates a challenge
with respect to heat sinking. As a
result, over sensitive instruments can
be damaged beyond repair.
Launching without multiple
reflections
The test adapters of Acterna's optical
power meters are based on the
common fiber-air-sensor interface'
principle. A reflection trap in the
adapter of the power meter prevents
possible multiple reflections between
the reflective plug end surface and the
photodiode from falsifying measure-
ment results. Constant measurement
accuracy is thus guaranteed, regard-
less of the reflectivity of the plug end
surface (material, surface quality).
Figure 3a:
Launching without multiple reflections
Without a reflection trap,
reflected light components
are measured repeatedly
Figure 3b:
Launching with multiple reflections
If a reflection trap is used,
the diode measures the
exact light component
The test adapters of optical power meters
from Acterna are based on the common
fiber-air-sensor interface principle.
A reflection trap in the adapter of the Acterna
power meter prevents possible multiple
reflections between the reflective plug end
surface and the photodiode from
falsifying measurement results. Constant
measurement accuracy is thus guaranteed,
regardless of the reflectivity of the plug end
surface (material, surface quality).
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Optical light sources
Requirements for measurement applications
Light emitting diodes (LEDs) and laser
diodes (LDs) are used as optical
sources. Due to their different physical
parameters, they also have different
coupling methods and applications.
LED sources
The light of the LED, with its wide,
large-area radiation characteristic, is
adjusted to the fiber diameter and
aligned by means of a microlensbonded inside the casing. The coupling
to the measuring or system cable is
contactless via an air gap in the
connector. The main advantages of
LED sources, which are only used in
local area network (LAN) installations,
are their low production cost, easy
alignment to multi-mode fibers and
low sensitivity to temperature.
Laser sources
Compared with LED sources, laser
diodes (LDs) have a smaller, lobe-
shaped radiation profile and a higher
output power.They are, however, more
sensitive to temperature variations
and are particularly suited for single
mode fibers, which have a much
smaller core than multi-mode fibers.
The light is launched by fastening a
fiber section directly in front of thelaser chip.This process is complex,
but guarantees close tolerances. The
pigtailed LD-module is connected to
the output connector. Thus, easy
cleaning of the connector end sur-
faces is vital. Laser sources offer a
sufficiently high output level for the
dynamic ranges required in long-haul
networks.
Figure 4b: Direct coupling to the fiber
Direct coupling fiber to fiber, e.g. (OLS-6)
Usual with LDs
Coupling by physical contact
Extremely precise adapter required
(tolerance50.5 mm)
Light cone spills
over connected fiber
Air
FiberN.A.
Figure 4a: Indirect coupling to the fiber
Indirect coupling via a lens (OLS-5)
Usual with LEDs
Injected power dependent on
numerical aperture (N.A.) of fiber
LD
Figure 5: Power spectrum of LED and laser sources
S'
15 to 25 dBm
FWHM
100 nm
1300
LED
0 to 10 dBm
FWHM
3 nm
1300
FP Laser Diode
(MLM Laser)
+5 to 10 dBm
551 nm
l (nm)1300DFB Laser Diode
(SLM Laser)
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Stabilised output level
The stability of the source and the
deviation of its output level are more
important for precise loss tests than
the actual power. Since a certain timeelapses between the reference
measurement and the measurement
of the link, the source signal must
remain constant. The temperature
sensitivity of semiconductor light
sources influences both the output
power and the nominal wavelength.
Lasers are much more sensitive to
temperature than LEDs. LED sources
are able to manage with a fixed
compensation factor for the tempera-
ture characteristic, while lasers require
optical feedback. Optical sources
therefore need an optimized correction
principle that also eliminates these
influences and ensures a stabilized
light over a wide temperature range.
Reproducible fiber coupling
Measurement accuracy also depends
to a large extent on the reproducibility
of the fiber coupling at the source
output connector. A rugged mechanicaldesign and casing avoids the
possibility of attenuation damage.
Acterna's universal adapter system
allows the use of different connector
types and enables easy access to the
internal fiber end for easy cleaning.
Dual wavelength operation
All Acterna sources incorporate two
LED or laser sources, with either two
outputs (OLS-6), or one combined
output (OLS-5, OLS-15). The single
output instruments feature the
TWINtestfunction which allows
simultaneous measurements at
1310/1550 nm or 850/1300 nm
without having to disconnect and
reconnect.
TWINtest
TWINtest feature doubles measuring
speed for dual-wavelength tests by
synchronizing light source and power
meter.
Figure 6: Laser source with one optical port for dual-wavelength loss test with TWINtest
OLS OLP
OLP detects wavelength transmited from OLS by
detecting the modulation frequency which is related
to the wavelength used and switches measurement
range automatically. Modulation is also used for
fiber identification.
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Loss test Adapters and CablesActerna's universal interchangeable adapter system gives
the instruments access to all common fiber optic
connectors in the field. Various adapter cables help toconnect all the different devices under test.
2060 universal test adapters
2014 universal test adapters
2150 universal test adapters
Fixed Attenuators/Mating sleeves, Single Mode Fixed Attenuators,
K30XX, K31XX test and adapter cables
OLS OLP
Loss test according to IEC 874-1, method 7
Reference measurement (setting the absolute level to
0 dB) similar to method 6 but only one measurement
jumper cable used.
OLS OLP
Loss measurement of connectors:
Method 7 is used to measure patch cables from both ends
OLS OLP
Loss test according to IEC 874-1, method 6
Reference measurement:
This reference measurement need only be performed once
a day, as the long-term stability of the source and receiver
is excellent.
OLS OLP
Insertion loss measurement:
The additional losses can be read off on the power meter
when the device under test (optical fiber cable) is inserted.
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Acterna ACO FI-11 Optical Fiber I dentifierActerna OVF-1 Pen Sized Visual F ault Locator
Acterna
ACO FBP-S1
Video Inspection
Probe System
Acterna OFI-2000
Related products
Acterna ONT-30
Acterna MTS-8000
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Acterna handheld fiber optic test instrumentsPower meters Wavelengths Dynamic range Application
Pocket-sized
OLP-5 820, 850, 1300, 1550 nm -60 to +5 dB m datacom multi and single mode
OLP-6 780, 850, 1300, 1310, 1550 nm -65 to +10 dBm universal Telecom
OLP-8 980, 1310, 1480, 1550 nm -50 to +23 dBm multimedia/CATV and D WDM
High performance
OLP-15c 780, 850, 1300, 1310, 1550 -70 to +20 dBm universal Telecom
OLP-16c 850, 1300, 1310, 1480, 1510,
1550, 1625 nm
-80 to +15 dBm ultra sensitive power measurement
OLP-18c 850, 980, 1310, 1480, 1510,
1550, 1625 nm
-60 to +26 dBm multimedia/CATV and DWDM
OLP-30c 850, 980, 1310, 1480,
1510, 1550, 1625 nm
-55 to +30 dBm ultra high power measurement
in multimedia/CATV and DWDM
Light sources Wavelengths Output power Application
Pocket-sized
OLS-5 LED, 850, 1300 nm single port -17dBm (62.5/125) datacom mult-imode loss test
OLS-6 FP-LD, 1310, 1550 nm dual port -7 dBm (9/125) universal single mode loss test
OLS-6 FP-LD, 1550, 1625 nm dual port -7 dBm (9/125) 1625 nm loss test, DWDM C+LHigh performance
OLS-15 FP-LD, 1310, 1550 nm single port -7 dBm (9/125) universal single mode loss test
Attenuator Wavelength Range Application
High performance
OLA-15b 1310 and 1550 3 to 60 dB system test for dynamics and margin
Test kits Instruments Range for loss test Application
OMK-5 OLP-5, OLS-5 43 dB (62.5/125) Datacom multi-mode
OMK-6 OLP-6, OLS-6 58 dB (9/125) Telecom
OMK-7 OLP-8, OLS-6 43 dB (9/125) multimedia/CATV and DWDM
OMK-9 OLP-16c, OLS-6 (1310/1550 nm),
OLS-6 (1550/1625 nm)
73 dB (9/125) universal loss test
(three wavelengths)
OMK-14c OLP-15c, OLS-15 63 dB universal Telecom
OMK-15c OLP- 15c, OL S-15, OLA-15b 63 dB unive rsal Te leco m including s ystem
test
OMK-18c OLP-18c, OLS-15 53 dB multimedia/CATV and DWDM
OMK-19c OLP-30c, OLS-15, OLA-15b 48 dB multimedia/CATV and DWDM
including ultra high power
measurement and system test
OMK-30 OLC-65, OLS-15 53 dB universal Telecom including system
test
Acterna AdvantageSM adding value
with global services and solutions
From basic instrument support for
your field technicians to management
of complex, company-wide initiatives,
Acterna's service professionals are
committed to helping you maximizeyour return on investment. Whatever
your needs product support, system
management, education solutions,
tailored test & measurement solutions
or refurbished equipment we offer
programs that will give you the com-
petitive edge. To learn more about how
Acterna can help your business be
more successful, visit the services
section on your local web page at
www.acterna.com.
Acterna is the world's largest provider
of communications test solutions for
telecommunications and cable network
operators. A trusted communications
test partner for more than eight
decades, Acterna offers an unmatched
portfolio of awardwinning instruments,
systems, software and services that
help its customers reduce network
costs while improving performance
and reliability. Headquartered in
Germantown, Maryland, USA with
European and Asia-Pacific operations
based in Eningen, Germany and Hong
Kong Acterna serves nearly every
major communications service provider
and equipment manufacturer around
the world through a skilled sales and
support organization in 31 countries.
Worldwide
Headquarters
One Milestone Center Court
Germantown, Maryland20876-7100
USA
Acterna is present in more
than 80 countries. To find
your local sales office go to:
www.acterna.com
Regional Sales
Headquarters
North America
One Milestone Center CourtGermantown, Maryland
20876-7100
USA
Toll Free: 1 866 ACTERNA
Toll Free: 1 866 228 3762
Tel: +1 301 353 1560 x 2850
Fax: +1301 353 9216
Latin America
Acterna do Brasil Ltda.Av. Eng. Luis Carlos Berrini
936 9th Floor
04571-000 So Paulo
SP-Brazil
Tel: +55 11 5503 3800
Fax: +55 11 5505 1598
Asia Pacific
Acterna Hong Kong Ltd.
Room 4010, 40th Floor
China Resources Building
26 Harbour Road
Wanchai
Hong Kong
Tel: +852 2892 0990
Fax: +852 2892 0770
Western Europe
Acterna Germany GmbHMhleweg 5
72800 Eningen u. A.
Germany
Tel: +49 7121 86 2222
Fax: +49 7121 86 1222
Eastern Europe,
Middle East & Africa
Acterna Austria GmbH
Aredstrasse 16-18
A-2544 Leobersdorf
Tel: +43 2256 65610
Fax: +43 2256 65610-22
Acterna Moscow
Prospect Mira, 26,
stroenie 5
RF-129090 Moscow
Tel: +7 095 937 88 04
Copyright 2004
Acterna, LLC.All rights reserved.
Acterna, Communications
Test and Management
Solutions, and its logo are
trademarks of Acterna,
LLC. All other trademarks
and registered trademarks
are the property of their
respective owners. Major
Acterna operations sites
are IS0 9001 registered.
Note: Specifications,
terms and conditionsare subject to change
without notice.