AFL Noyes OFI User manual

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OFI Optical Fiber Identifier
User’s Guide
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OFI Optical Fiber Identifier
User’s Guide
© 2002-2008, AFL Telecommunications, all rights reserved. OFI1-11-1000 Revision A, 05.02.08
Specifications are subject to change without notice.
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Limited Warranty
One Year Limited Warranty
All Noyes products are warranted against
defective material and workmanship for a
period of one year from the date of shipment
to the original customer. Any product found to
be defective within the warranty period will be
repaired or replaced by Noyes. In no case will
Noyes liabilities exceed the original purchase
price of the product.
Exclusions
The warranty on your equipment shall not apply
to defects resulting from the following:
• Unauthorizedrepairormodication
• Misuse,negligence,oraccident
CE Information
These instruments have been
designed and tested to comply
with the relevant sections of
any applicable specifications including full
compliance with all essential requirements of
allapplicableEUDirectives.
Returning Equipment
To return equipment, please contact Noyes
to obtain additional information and a Service
Request (S.R.) number. To allow us to serve
you more efficiently, please include a brief
description specifying the reasons for the return
of the equipment.
AFL Telecommunications
Noyes
16 Eastgate Park Road
Belmont, NH 03220
Phone: [phone]
603-528-7780
Fax: [phone]
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i
Contents
Safety
Important Safety Information........................................... iv
Section 1: General Information
Introduction..................................................................... 1
Contacting Noyes Customer Service................................. 1
UnpackingandInspection................................................ 2
Feature Overview ............................................................ 2
Section 2: Functional Description
OFI200ModelFeatures.................................................. 4
Front Panel Indicators.................................................. 6
OFI400ModelFeatures.................................................. 8
Front Panel Features ................................................... 10
DisplayReadings......................................................... 12
Section 3: Operating Instructions
Precautions..................................................................... 14
Identifying Tone on Fibers................................................ 16
IdentifyingTonewithOFI400Model ............................ 16
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IdentifyingTonewithOFI200Model ............................ 18
Testing 250µm/900µm Coated Fibers with OFI 200 ......... 20
Testing 250µm/900µm Coated Fibers with OFI 400 ........ 22
Testing Ribbon Fibers (OFI 200/ OFI 400)........................ 23
Testing 2mm/3mm Jacketed Fibers with OFI 200............. 24
Testing 2mm/3mm Jacketed Fibers with OFI 400............. 26
MeasuringCorePowerwithOFI400Model...................... 28
MeasuringRelativePowerwithOFI400Model ................. 29
Section 4: Maintenance
Repair and Calibration ..................................................... 30
Verifying OFI Performance ............................................... 30
Cleaning Optical Assembly............................................... 31
OFI 200 Battery Replacement.......................................... 32
OFI 400 Battery Replacement.......................................... 33
Section 5: Specifications
OFI 200 Specifications .................................................... 34
Detectablesignalrange ............................................... 34
Optical Specifications .................................................. 35
General Specifications ................................................. 35
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iii
List of Figures
Figure 2-1: OFI 200 Assembly ..................................... 5
Figure 2-2: OFI 200 Front Panel Indicators ................... 7
Figure 2-3: OFI 400 Assembly..................................... 9
Figure 2-4: OFI 400 Keys and Indicators ...................... 11
Figure2-5:OFI400Display......................................... 13
Figure 3-1: Shielding the Optical Assembly Area ........... 15
Figure 4-1: Cleaning Optical Assembly ......................... 31
Figure 4-2: OFI 200 Battery Replacement .................... 32
Figure 4-3: OFI 400 Battery Replacement .................... 33
OFI 400 Specifications .................................................... 36
Detectablesignalrange ............................................... 36
Optical Specifications .................................................. 37
General Specifications ................................................. 38
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iv
Important Safety Information
CAUTION! To avoid serious eye injury, never look directly into the optical outputs of fiber
optic network equipment, test equipment, patch cords, or test jumpers. Always assume
that optical outputs are on.
NOTICE! Noyes Optical Fiber Identifiers contain no user serviceable parts. Except for
changingbatteries,theseunitsmustbereturnedtoNoyesorauthorizedagentsforrepair
and calibration.
Safety
!
!
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1
Section 1: General Information
Introduction
ThepurposeofthisUser’sGuideistoexplainhowtouseandmaintainNoyestestequipment.
Please check our web site at ww w. AFLtele.com ( click on Products > Noyes Test & Inspection)
for updates to this manual, software updates, and additional application information. If you have
any questions about your instruments and recommended accessories, or if you need technical or
sales support, please contact Noyes Customer Service.
Contacting Noyes Customer Service
YoumaycallNoyesCustomerServicebetween8a.m.and5p.m.,UnitedStatesEasternTime,
as follows:
Phone [phone] (North America)
603-528-7780
Fax [phone]
Web noyestechsupport@afltele.com
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Unpacking and Inspection
OFI Optical Fiber Identifier has been carefully packed in accordance with standard shipping
procedures. Examine your OFI for damage that may have occurred during shipment. If you find
any damage, please contact Noyes.
Feature Overview
Noyes Optical Fiber Identifiers are rugged, handheld, and easy-to-use fiber optic test instruments
for the installation and maintenance of fiber optic networks. The OFI models have been designed
to discriminate optical signals transmitted through a single-mode fiber when performing routing
and general installation, routine maintenance procedures, rerouting, or restoration.
Noyes Optical Fiber Identifiers can locate specific fibers from a bundle without disrupting normal
service within a Central Office (CO), at the splice point, or the Controlled Environmental Vault
(CEV).
The loss induced in the fiber during testing is limited, thus service is not interrupted. This method
iscommonlyreferredtoasLocalDetection(LD).ThetwomostwidelyusedLDtechniquesare
macro-bending and micro-bending of the fiber. The macro-bending technique, which offers several
advantages over micro-bending, is the technique used in the OFI 200 and OFI 400 design.
By simply clamping an Optical Fiber Identifier onto a gently banded fiber, the unit will indicate if
there is [NO SIGNAL], [TONE], or [TRAFFIC] and identify signal direction.
The OFI 200 model features [TRAFFIC] signal presence detection and [TRAFFIC] direction
for routing, and general installation and troubleshooting.
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identication,2kHz[TONE]signaldetection,audibleindicationwhenthe[TONE]signalisdetected,
and low battery indication.
The OFI 400 model is the next generation of Noyes Optical Fiber Identifiers. It has all the features
oftheOFI200modelplusaneasy-to-readLCDdisplaywithBacklight,multiple[TONE]signal
detection(270Hz,330Hz,1000Hz,or2000Hz),powersavingfeature,and[SetReference]
feature.TheOFI400alsomeasuresanddisplaysbercorepowerorrelativepoweronanLCD
display.
The OFI 200 and OFI 400 are designed specifically for single-mode fibers carrying 1310 and
1550 nm signals. All specifications indicate performance on a single-mode fiber.
Recommended Accessories
When using the OFI 200 or OFI 400 for fiber identification, a light source capable of generating
a modulated [TONE] signal is required. The procedure of using a light source in conjunction with
an optical fiber identifier for fiber identification is referred to as [toning out the fiber]. Noyes laser
sources, models OLS 2 and OLS 4, provide multiple Tone generation and may be used for [toning
out the fiber] procedure.
The OFI 200 and OFI 400 models are designed for single-mode fibers carrying 1310 and
1550 nm signals, but for better results the recommended wavelength for [TONE] identification
is 1550 nm.
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Section 2: Functional Description
OFI 200 Model Features
The OFI 200 is powered by a standard 9 volt alkaline battery that typically provides over 10,000
operations. Power is controlled by the clamping trigger located on backside of the instrument.
The OFI 200 operates only when the trigger is engaged. This ensures extended battery life and
minimizesambientlightinuence.
The fiber under test is placed in the fiber groove and depressed into the optical assembly by
gently pulling the clamping trigger. The OFI 200 will turn on when the plunger is closed and the
fiber is in the appropriate position.
Once the plunger is closed, the appropriate indicator [TRAFFIC], [TONE], or [NO SIGNAL] will
illuminate to indicate an optical signal detection. An audible tone generator will “beep” when the
unitisenergizedandwillproducecontinuoussoundwhena[TONE]signalisdetected.The[Low
Battery] indicator will illuminate when a standard 9V alkaline battery requires replacement.
Figure 2-1 illustrates the OFI 200 assembly parts listed below.
1 Plunger cover
2 Plunger
3 Optical assembly
4 Fiber groove
5 Battery plate
6 Retaining screw
7 9V alkaline battery
8 Clamping trigger
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Figure 2-1: OFI 200 Assembly
TRAFFIC
NO SIGNAL
TONE
LOW BATT
OFI 200
N O Y E S
AFL Telecommunications
OPTICAL FIBER IDENTIFIER
1
2
3
4
5
6
7
5
6
8
4
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Front Panel Indicators
Figure 2-2 illustrates the OFI 200 front panel indicators described below.
1 [DIRECTION OF TRAFFIC] indicators - [Left] and [Right] arrows identify the direction of the
detected [TRAFFIC] signal.
2 [TRAFFIC] indicator - Illuminates when a [TRAFFIC] signal is present regardless of the
transmission rate.
Note: [TRAFFIC] is a light signal modulated by a random data sequence.
3 [NO SIGNAL] indicator - Illuminates to indicate absence of an optical signal.
4 [TONE] indicator - Illuminateswhent heOF I20 0detectsthe2k Hz[ TO NE ]signal,anaudible
beeper is also activated.
Note: [TONE] is a light signal modulated into a nominal 50% duty cycle square wave.
5 [LOW BATT] indicator - The [Low Battery] indicator illuminates when a standard 9V alkaline
battery requires replacement.
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Figure 2-2: OFI 200 Front Panel Indicators
LOW BATT
TONE
NO SIGNAL
TRAFFIC
OFI-200
1 1
2
3
4
5
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OFI 400 Model Features
The OFI 400 model is powered by standard 2 x 1.5V alkaline batteries that typically provide over
10,000 operations. Power is controlled either by pressing the [Power] key located on the front
panel of the instrument or by pulling the trigger all the way down. To ensure extended battery life,
the OFI 400 will turn [Off] after 4 minutes of inactivity. To disable this [Auto Off] feature, press
andholdthe[Power]keyduringpowerupuntiltheletter[P]appearsonthedisplay.Unitwill
remain [On] until the [Power] key is pressed to turn it [Off].
The fiber under test is placed in the fiber groove and depressed into the optical assembly by gently
pulling the clamping trigger. The OFI 400 will start taking measurements when the plunger has
closed and the fiber is in the appropriate position.
Once the plunger is closed, the appropriate indicator [LEFT], [RIGHT], or [NO SIGNAL] will illuminate
toindicate[TRAFFIC]detection.Also,theLCDdisplaywillshowcorepowermeasurementsor
[TONE] signal frequencies (if present). An audible tone generator will “beep” when the unit is
energizedandwillproducecontinuoussoundwhena[TONE]signalisdetected.TheOFI400will
continue to take measurements as long as the plunger is closed.
Figure 2-3 illustrates the OFI 400 assembly parts listed below.
1 Plunger cover
2 Plunger
3 Optical assembly
4 Fiber groove
5 Battery plate
6 Retaining screw
7 2 x 1.5V alkaline batteries
8 Clamping trigger
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Figure 2-3: OFI 400 Assembly
NO
OFI 400
N O Y E S
AFL Telecommunications
-88.8
8888
dBm
Hz
SIGNAL
Set Ref
dB
dBm
1
2
3
4
5
6
7
5
6
8
4
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Front Panel Features
Figure 2-4 illustrates the OFI 400 front panel keys and indicators described below.
1 Display - Shows core power measurements (absolute - dBm or relative - dB), multiple test
tonefrequencies-Hz(ifpresent),andlowbatteriesstatus.
2 [Direction of Traffic] indicators - [Left] and [Right] arrows identify the direction of the
detected [TRAFFIC] signal. They will illuminate accordingly when a [TRAFFIC] signal is present
regardless of the transmission rate.
Note: [TRAFFIC] is a light signal modulated by a random data sequence.
3 [NO SIGNAL] indicator - Illuminates to indicate absence of an optical signal.
4 [ dB
dBm /Set Ref] key - provides two functions as follows:
• [PressandHold]thekeyuntiltheword[HELD]isdisplayedtostorethecurrentlymeasured
level as the new reference level. Once the new reference is set, the OFI 400 switches to
the relative power [dB] measurement mode.
• [PressandRelease]thekeytotogglethedisplayedcorepowermeasurementsbetween
[dBm] and [dB]
5 [Backlight] - When the OFI 400 is turned [On], press the key to toggle the Backlight feature
[On] or [Off].
6 [Power] key - provides two functions as follows:
• [Press and Release] the key to turn the OFI 400 [On] or [Off]. The unit will turn off
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Figure 2-4: OFI 400 Keys and Indicators
automatically after four (4) minutes of inactivity.
• [PressandHold]thekeyduringpowerupuntiltheletter[P]isdisplayedtodisablethe
[AutoOff]feature.Unitwillremain[On]untilthe[Power]keyispressedtoturnit[Off].
NO
AFL Telecommunications
SIGNAL
Set Ref
OFI 400
dB
dBm
1
4
5
3
6
22
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