Transcript OFL280 Introduction to Operation

OFL280 FlexTester
Introduction to Operation
Jan-2014
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Presentation Outline
● OFL280 Overview
● Optical Test Capabilities & Interfaces
● Front Panel Controls
● OTDR Operation
 OTDR Modes and Settings
 OTDR Trace and Event Results
 Saving, Recalling and Uploading Files
● Light Source & Power Meter Operation
 Setting a Reference
 Measuring Loss using Wave ID
 Tone Generation & Detection
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AFL COMPANY CONFIDENTIAL
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OFL280 FlexTester Product Overview
● Handheld, all-in-one OTDR, OPM, OLS, VFL
 Point-to-point and PON-optimized models
● Test PONs end-to-end (ONT to OLT)
 Test through PON / FTTx splitter (up to 1x32)
– 34/32/32/30dB range at 1310/1490/1550/1625nm
– Fast recovery after high splitter loss
● Fault-locate in-service FTTx fibers from ONT
 Automatic Service-Safe™ live fiber detect
– Detects and prevents testing at in-service l
VFL:
All models
OPM:
All models
Service-Safe™
Live Fiber model;
Test PON without
service disruption
Rugged,
Lightweight,
Handheld
– 1625nm OTDR test without disrupting service
– Single connection for live fiber Test & Trace
 1490/1550nm PON power meter
● Highest resolution in class
 0.8 m event and 3.5 m attenuation deadzone
Low glare,
High-contrast,
Sunlight-readable
display
● Easy to use, fast, repeatable settings
 Supports both novice and power users
● Designed for OSP environment
 Best-in-class battery life: >10 hours continuous
 Superior display for outdoor & indoor use
Battery life
> 12 hours
continuous use
– High contrast, low glare, wide viewing angle
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MAN-WAN OTDR Selection
● What Networks are to be tested?..................Core, Metro, Access? Point-to-point or PON?
● What Applications are to be addressed?........Installation Test? Activation? Maintenance?
● What OTDR Performance is required?............... Wavelengths, Dynamic Range, Deadzone
● Are Other Optical Test capabilities required?.......................... PON OPM, OLS, OPM, VFL
● Additional Considerations:…………….Designed for OSP? Report generation capability?
Model
FLX380-304
FLX380-303
FLX380-302
FLX380-300
OFL280-103
OFL280-102
OFL280-101
OFL280-100
M700-21
M700-20
M310-20
M210-20
CS260-10
CS260-20
OFL250-100
OFL250-50
Network
Application
Point-to-Point SMF FTTx PON
Core Metro Access Dark Live Install Maint.
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AFL COMPANY CONFIDENTIAL
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OTDR Performance
Integrated Peripherals Report
Gen
Wavelengths Dyn Range Deadzone PON
Insp.
OLS OPM VFL TRM2.0
(nm)
(dB)
EDZ/ADZ (m) OPM
Probe
1310/1550/1650 41/41/38
0.8 / 2.5
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 FOCIS
1310/1550/1625 41/41/38
0.8 / 2.5
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 FOCIS
1310/1490/1550 41/38/41
0.8 / 2.5
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 FOCIS
1310/1550
42/42
0.8 / 2.5
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 FOCIS
1310/1550/1625
1310/1490/1550
1310/1550/1625
1310/1550
34/32/30
34/32/32
34/32/30
34/32
0.8 / 3.5
0.8 / 3.5
0.8 / 3.5
0.8 / 3.5
1310/1550/1625
1310/1550
40/38/38
40/38
0.8 / 4.5
0.8 / 4.5
1310/1550
1310/1550
38/37
30/30
0.8 / 3.5
1.5 / 9
1625 filtered
1310/1550
35
30/30
0.8 / 3.5
0.8 / 3.5
1310/1550
1550
26/26
26
1.5 / 6.5
1.5 / 7
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FOCIS
FOCIS
FOCIS
FOCIS
DFS1
DFS1
DFS1
DFS1
FOCIS
FOCIS
FOCIS
FOCIS
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OFL280 Top Panel
OPM Input port
VFL port
Class 2 laser output
WARNING!
• Never stare at any laser output
• Always follow your company’s
laser safety rules.
AFL COMPANY CONFIDENTIAL
OTDR / OLS port
Class 1 laser output
• Dust caps included standard
• Port adapters easily changed by user
• VFL and OPM ports equipped with 2.5 mm
‘universal’ adapters
• OTDR/OLS port equipped with SC adapter
• Other adapters are available
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OFL280 FlexTester Family Models
Patented
Single Port
ServiceSafe
Testing
FTTx Service-Safe
Live Fiber OTDR (1625 nm)
PON-optimized
OFL280-103
FTTx PON Power Meter
(1490/1550 nm)
Optical Light Source (OLS)
Dark Fiber OTDR
(Standard & FTTx / PON modes)
All OFL280-10x
Optical Power Meter (OPM)
Visual Fault Locator (VFL)
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Model
Description
OFL280-100
OFL280-101
OFL280-102
OFL280-103
1310/1550 nm OTDR
1310/1550/1625 nm OTDR
1310/1490/1550 nm OTDR
1310/1550/1625 nm OTDR / Live PON OTDR
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OFL280 Left Side Panel Interfaces
Front
15 V
External power
(15 VDC)
External power LED
Red = battery is charging
Green = battery is fully charged
USB function port
(mini-style connector)
connect to PC with
supplied USB cable
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OFL280 Right Side Panel
Front
Battery Compartment door
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Push this
direction to
open
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OFL280 FlexTester
Front Panel Controls & Display
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Back

Menu
Test





Start or Stop
tests
Save

VFL

AFL COMPANY CONFIDENTIAL
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Back

Menu
Test





Save

VFL

AFL COMPANY CONFIDENTIAL
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Save results
Set current Folder
Set current Filename
Review results
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Back

Menu
Test





Save

VFL

AFL COMPANY CONFIDENTIAL
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Hold to turn VFL
ON or OFF
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Back

Menu
Move to previous
or next ‘tab’
AFL COMPANY CONFIDENTIAL
Test





Save

VFL


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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Back

Menu
Hold to turn
power ON or OFF
AFL COMPANY CONFIDENTIAL
Test





Save

VFL


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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Back

Return to main
(top) menu
Menu
Test





Save

VFL

AFL COMPANY CONFIDENTIAL
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Navigate menus ()
Change setting ()
Select item ()
Back

Menu
Test





Save

VFL

AFL COMPANY CONFIDENTIAL
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
In ‘Trace’ View,
select () key also
toggles the active
cursor between A & B
Back

Menu




Save

VFL

AFL COMPANY CONFIDENTIAL
Test

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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Go back (up)
one menu level
Back

Menu
Test
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

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
Save

VFL

AFL COMPANY CONFIDENTIAL
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OFL280 Front Panel Controls
OFL280 FlexTester
Display
Function keys
(F1, F2, F3)
Back
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Menu
Test
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Save

VFL

AFL COMPANY CONFIDENTIAL
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OFL280 Display Organization
Common Features
Battery
status
Page name
Wavelengths
(results pages)
Tabs
Test results
or menus
Function
key labels
F1
F2
F3
Function keys (below the display)
AFL COMPANY CONFIDENTIAL
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Main Menu
Menu (key)
Modes:
● Full Auto OTDR – Easiest way to complete OTDR test on point-to-point fibers
● FTTx PON OTDR – In- or Out-of-Service PON OTDR with PON Power Meter
● FTTx PON Power Meter – In-service PON Power Meter
● Real Time OTDR – Useful for troubleshooting
● Expert OTDR – Expert user control of all point-to-point or PON OTDR test settings
● Light Source & Power Meter – Insertion Loss and Power Measurements
AFL COMPANY CONFIDENTIAL
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Main Menu – ‘Settings’ & ‘About’ Tabs
● ‘Settings’ Tab:
 Language
 Date & time
 Distance units (m, km, ft, kft, mi)
 Launch Quality Check (enabled / disabled)
 Bluetooth – Pair devices, send, receive
● ‘About’ Tab:
 OFL280 Model
 Device & Optic Version
– User Interface & Optics firmware versions
– Can be updated in the field
 Serial Number – Factory set
 Calibration Date – Factory set
– Updated during factory calibration
AFL COMPANY CONFIDENTIAL
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Main Menu – Function Keys
● Files (F1) – Open saved files
● USB (F2) – Connect OFL280 to a USB port on your PC, then press
this key to enable USB communications for:
 Test results upload
 Firmware update download
 Upload / download managed from PC
 OFL280 appears as a USB mass storage device (drive) to a PC
● Trace (F3) – View the results of the last OTDR test or the last OTDR
file opened
F1
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F2
F3
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OFL280 OTDR Operation
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To perform an OTDR Test
1. Display the Main Menu
2. Press  to highlight the desired OTDR mode
3. Press  to review/edit settings
4. Press  to start a new test.
AFL COMPANY CONFIDENTIAL
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Review ‘Test’ (settings) tab
• To view different tab: 
• To select different setup parameter: 
• To change highlighted setting:  
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 Review ‘Event’ (settings) tab
● Set Events Detection to Auto or Off:
 Enable / disable Automatic event detection
● Select Event Thresholds group:
 PON Default – Default settings for FTTx PONs
 PON User – User settings for FTTx PONs
 Default – Default settings for pt-to-pt networks
 User – User settings for pt-to-pt networks
● Set End Loss threshold for pt-to-pt networks
 Event with Loss > End Loss (dB) threshold
is declared end of fiber
● Set Event Loss & Reflectance thresholds
 Events with Loss > Event Loss (dB) threshold
are reported in Event Table
 Events with Reflectance > Event Reflectance (dB)
threshold are reported in Event Table
● Select thresholds using 
● Edit thresholds using 
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 Review ‘Fiber’ (settings) tab
● Fiber Type generally left at SMF-28e
● Typically use default values for Index of Refraction and Backscatter
Coefficient (BC)
● OTDR measures time-of-flight (for optical backscatter and reflections)
● OTDR uses Index of Refraction to convert time-of-flight to distance
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 Review ‘Cables’ (setting) tab
● Include a Launch Cable if you wish to measure quality of first
connector of fiber-under-test
 Example: Change Launch Cable to “Default 1” with length of 150 m
 Custom length may be set by selecting and editing Launch Length
● Include a Receive Cable if you wish to measure quality of the last
connector of fiber-under-test
 Select ‘Launch Cable’
 Press  or  until the
desired setting appears.
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Press  to start a test …
● Press  to start a test…
● …From OTDR Test settings after
selecting desired OTDR test mode
● …Or from Event, Fiber or Cable
Settings Tab
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OTDR Checks Launch Quality…
● At start of OTDR test, OFL280 checks connection to fiber-under-test
(if Launch Quality Check enabled)
● Alerts user when poor launch condition exists at OTDR connector
 Usually due to dirty, damaged, or mismatched (UPC  APC) connectors
 Check and clean connection before continuing OTDR test
 Launch quality checked after live fiber check (to prevent service disruption)
● Good launch condition eliminates follow-up visit to obtain useful results
 Provides user opportunity to clean and recheck, or continue test anyway
 Launch quality check enabled/disabled in Main Menu Settings tab
Alert displayed
when poor
launch quality
is detected.
Enable/Disable
Launch Quality
Check
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Clean connector,
then re-test.
Continue without
cleaning connector.
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… now testing at 1310 nm …
OFL280 begins test at selected wavelength…
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… now testing at 1550 nm …
If more than one wavelength selected, OFL280 continues testing at
second wavelength
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…Test is done!
Results from both wavelengths available when test completes
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What’s Unique when Testing a Live PON?
● One subscriber may lose service while others remain in-service
 Network continues to transmit 1310, 1490, and possibly 1550 nm signals
● Check downstream PON power levels at out-of-service ONT:
 OK: Power at 1490 & 1550 nm wavelengths within expected levels
 Dim or Dark: Little or no 1490 and/or 1550 nm power due to upstream fault
● Cannot test a live PON using a standard OTDR!
 OTDR test at 1310, 1490, or 1550 nm will disrupt service to other customers!
 Downstream 1490 or 1550 nm signals interfere with normal OTDR’s receiver
● Test in-service PON using a Live PON OTDR which includes:
 An OTDR laser at an out-of-band wavelength (e.g. 1625 nm)
 A filtered detector to reject in-service wavelengths (e.g. 1490, 1550)
1290
1330
Up
1480 1500
GPON Wavelengths Down
O - Band
1260
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E - Band
1360
1550 1560
Video
S - Band
1460
1625 1650
Test
C-Band L - Band U - Band
1530
1565
1625
1675 nm
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Live Fiber OTDR mode in OFL280
● All OFL280 models detect live traffic and prevent OTDR
testing at 1310 and 1550 nm when live traffic is present
 If live traffic not detected, testing proceeds as previously shown
 If live traffic is detected, OTDR testing @ 1310/1550 is not allowed
● The OFL280-103 supports testing of Live FTTx PONs
 Includes ServiceSafe™ live fiber detection
 Includes integrated PON Power Meter to detect and measure
downstream power levels at 1490 and 1550 nm
 ServiceSafe™ prevents OTDR testing at 1310 or 1550 on live fiber
– Ensures service is not disrupted on live FTTx PONs
 Allows out-of-band OTDR test using 1625 nm laser on live fiber
 Same form factor and User Interface as OFL250, other OFL280s, and
FLX380s
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OFL280-100 ServiceSafe™ Live Fiber Process
OFL280-100 Live Fiber Detection
Press Test:
Live or
‘dim’ fiber
Service-Safe™ live fiber testing:
 OFL280-100 detects live fiber and
prevents initiating 1310 or 1550 nm
OTDR test
 OFL280-100 allows 1310/1550 nm
OTDR test on dark fiber
 OFL280-100 does not include 1625 nm
Live PON OTDR
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FTTx – ServiceSafe™ Live Fiber OTDR
OFL280-103 Live Fiber Detection
Live or
‘dim’ fiber
● Service-Safe™ live fiber testing:
 Always auto-detects and measures
incoming 1490 and 1550 nm signals
 Allows 1310 & 1550 OTDR testing only
if no incoming traffic detected
 Allows 1625nm upstream testing on inservice or dark fibers
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Viewing OTDR Results
● There are four tabs or ‘views’:
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
Trace
Event Table
End-to-End Summary
File Information
● Select which tab to view
using the   keys.
● Yellow highlight indicates
launch cable present
● Green highlight indicates
receive cable present

AFL COMPANY CONFIDENTIAL
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Trace View … (left tab)
● Press   to move the active cursor
● Press  (select) to toggle the active
cursor between A & B
● Cursor locations and 2-point
measurements (loss & reflectance)
are shown below the trace
● Press F1 (Wave) to select which
wavelength trace to display
● Press F2 (‘Zoom’) to enable / disable
zooming about active cursor location
 Press   to zoom in/out horizontally
 Press  to zoom in/out vertically
● Press F3 to Unzoom or Rezoom
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F1
F2
F3
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Analyzing an OTDR Trace
● Backscatter portions of an OTDR trace show relative
power (in the fiber) vs. distance
Power
(dB)
Backscatter
Distance
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Measuring Connector Insertion Loss
● Measuring connector Insertion Loss using 2-point method
 Loss measured as difference between backscatter at A & B cursors
Power
(dB)
A
B
Insertion loss
Distance
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Measuring Fiber Section Insertion Loss
● Measuring fiber section Insertion Loss using 2-point method
 Loss measured as difference between backscatter at A & B cursors
Power
(dB)
A
B
Insertion loss
Distance
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Measuring Link Insertion Loss
● Measuring Link Insertion Loss using 2-point method
 Loss measured as difference between backscatter at A & B cursors
Power
(dB)
A
B
Insertion loss
Distance
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Using OTDR without Launch Cables
● OTDR trace with no launch or receive cable
 Unable to measure loss of first & last connectors
Link
Fiber loss
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2
Fiber start
event
Fiber end
event
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Using OTDR with Launch Cable Added
● OTDR trace with a launch cable added
 Allows measurement of first connector loss & reflectance
Launch
Cable
Link
Fiber + Nearend loss
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2
Fiber start
event
Fiber end
event
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Adding Receive Cable
● OTDR trace with launch and receive cables added
 Allows measurement of first and last connector loss & reflectance
Launch
Cable
Receive
Cable
Link
Link loss
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2
Link start event
Link end event
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… Event (Table) View … (middle tab)
● Event Table is a list of
automatically detected events
● Press  to jump to next /
previous event
● Previous / next event highlighted
● Cursor moves to location of
highlighted event
● Press ‘Wave’ (F1) to view
Event Table for other tested wavelengths
● Press ‘Zoom’ (F2) to enable / disable zooming about the
active cursor location
● Checked Zoom box () indicates zooming enabled
● Press  or  to zoom in/out horizontally
● Press  or  to zoom in/out vertically
AFL COMPANY CONFIDENTIAL
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Interpreting OTDR Event Table
Each event in the table provides the following info:
● No: Event Number
● Location: Distance to event from start of fiber-under-test
● Type: Icon indicating:
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
Start of fiber ( )
Non-reflective event ( )
Reflective event ( )
PON splitter event ( )
Group start, middle, end (
End of fiber ( )
)
● Refl: Reflectance of event in dB
 More negative reflectance is better
 Better reflectance: smaller trace spike
● Loss: Loss of event in dB
● Fiber dB/km: Loss per distance of fiber preceding event
 Typically ~0.35 dB/km for 1310; ~0.2 dB/km for 1550.
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Understanding Events
● Non-reflective events may be any of the following:
 Fusion splices:
– Typically < 0.2 dB; Many too good to even be seen; Similar values at all ls
 Macro-bends:
– Typically in splice closures & access cabinets, often at connector & splice locations
– Indicated by higher loss at longer l (1550, 1625 nm) vs. shorter l (1310, 1490 nm)
 Non-reflective breaks
 Clean angle-polished connectors (APC)
 PON Splitters:
– High loss events (> 3 dB) in PONs only
– Loss depends on split ratio
● Reflective events may be any of the following:
PON Splitter Loss
Split Ratio Loss (dB)
1x8
9.5 – 10
1x16
12.5 – 13.5
1x32
15.5 – 16.5
1x64
19 – 20
 Connectors:
– Reflectance > -40 dB indicates need for inspection and cleaning
– Reflectance > -20 dB indicates glass/air interface due to: open connection (end),
dirty/damaged connector, connector not fully seated, or UPC-to-APC connection
 Mechanical connector
 Poor splice with air bubble
 Reflective break
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… End-to-End Summary View (middle tab)
● Use   keys to select End-to-End Summary View
● Reports Length from Start to End
 Length adjusts for launch and receive
cables, if present
● Reports end-to-end Link Loss
 Includes loss of first connection
if launch cable present
 Includes loss of last connection
if receive cable present
● Reports overall Optical Return Loss (ORL)
 Excludes ORL due to launch and receive cables, if present
 Includes reflectance of start connection to fiber-under-test
 Includes reflectance of end connector of fiber-under-test
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…File Information View (right tab)
 View / change* Cable settings
 View / change* Fiber settings
 View / change* Event Thresholds
 View OTDR Test settings
 Press ‘Recalc Events’ (F2) to
re-calculate the event table,
applying any changes made to
Cable, Fiber or Event settings
F1
F2
F3
* NOTE:
Changes made here apply only to the
current results. They will not impact
other saved files or the next test.
AFL COMPANY CONFIDENTIAL
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OFL280 Operation:
Saving, Recalling and Uploading
OTDR Traces
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New or Saved Trace?
● ‘New Trace’ indicates that
the displayed OTDR trace
has not been saved
AFL COMPANY CONFIDENTIAL
● A filename indicates this
trace has been saved as
an .SOR file
54
To save new traces
 Press the Save key

‘Save As’ page will appear
 Edit Job, End1, End2, Cable ID,
and Fiber number, as needed
   moves the cursor
  changes highlighted character
  selects the next field
 Press Save (F3)
 Folder and File naming:
 Job defines the Job folder
F1
F2
F3
 End1-End2-Cable defines the Cable folder within the Job folder
 End1-End2-Fiber#-Wavelength.SOR defines the filename
 OTDR Results are saved in Telcordia SR-4731 .SOR file format and may
be viewed and analyzed using AFL’s TRM® 2.0 Test Results Manager
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55
To review saved traces
 Press the Files (F1) key on the
Save As page (or Main Menu.)
 File Manager will be displayed
 Highlight a fiber name
 Press Open (F3) or the 
(select) key
 Note the name of the current
Job and Cable are shown
below the fiber list.
AFL COMPANY CONFIDENTIAL
F1
F2
F3
56
To open a different folder…
●




Select the …(up one level) icon
A list of the Cables stored in current Job folder is shown
To select a different Job folder, select …(up one level) icon again
A list of current Job folders is shown
Use ▲▼ to select different Job, Cable,
or Folder, then press  to select.
TIP: Press and hold Delete (F2) to
delete the highlighted folder and
trace files in it.
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57
Saving Traces (Summary)
File Manager
Save As
Save
F1
(Files)
Edit folder and
filename
when saving
results
List of files
in the
current folder
…

List of
Cable folders
F1
(Save As)
F3
(Save)
ACTION:
Results are saved
in current folder
AFL COMPANY CONFIDENTIAL
…

List of
Job folders
58
Reviewing Traces (Summary)
File Manager
Save As
Save
Edit folder and
filename
when saving
results
F1
(Files)
List of files
in the
current folder
…
F1
(Save As)
Menu
List of
Cable folders
…
F1


List of
Job folders
(Files)
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59
To Copy / Move Traces to a PC…
● Connect OFL280 to PC using
the supplied USB cable
OFL280 FlexTester
● From the OFL280 Main Menu
press USB (F2)
Display
Back

Menu
Test





Save

VFL

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
60
From PC Desktop:
● Open ‘My Computer’
● Open ‘OFL (E:)’ (this is your OFL280)
 (Drive letter may be different on your PC)
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61
Copy ‘Results’ folder to your PC
● Drag RESULTS folder to desktop to copy results to your PC
 You can also open the RESULTS folder and drag selected files to
your PC
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62
The Importance of Backup
● Here is one way to ensure you always have a
backup copy of your OFL280 test results:
 Copy (do not Move) the Results folder to your PC
 Verify the Results folder was transferred successfully
 Put a copy of the Results folder on a backup drive
(e.g. a USB memory stick)
 At this point you can delete the Results folder from the
OFL folder in My Computer. This will erase the Results
folder on your OFL280.
 The OFL280 will regenerate a new, empty Results
folder the next time you save results.
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63
Bluetooth File Transfers
● OFL280 includes Bluetooth Interface
 Pair to another Bluetooth device
 Send (upload) files to paired Bluetooth device
 Receive (download) files from paired Bluetooth device
● Upload OTDR, OPM results to phone, tablet without USB connection
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64
Pair OFL280 to Another Bluetooth Device
● From Main Menu Settings tab, select Bluetooth…
● From Bluetooth Setup tab, set Bluetooth = On
● Set Visibility = Shown to All
● On other device, find Bluetooth settings and select option to add a new
Bluetooth device
 A list of available devices should be displayed including the OFL280
 Select the OFL280 device and enter a pairing code of “0000”
● On the OFL280 Bluetooth screen, select the Paired Devices tab and
verify the MAC address of the newly paired device is displayed
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65
Send OFL280 Files to Paired Device
● Enable file reception on the paired receiving device
● In the OFL280 Bluetooth Paired Devices tab, select the MAC address of
the paired receiving device
● Press “Send” softkey on the OFL280
● File Manager is displayed on the OFL280
● To send a single file, select the file to be sent and press “Send” softkey
● To send multiple files, select each file to be sent and press “Select”
● When all desired files have been selected, press “Send” softkey
 Note: OFL280 does not currently allow a folder to be selected and sent
Press
“Send”
AFL COMPANY CONFIDENTIAL
Select file
and press
“Send”
“Select”
checkmarks
files to be
sent.
“Send” transmits
all checked files.
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OFL280 Operation:
Light Source & Power Meter
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Main Menu – ‘Mode’ Tab (cont.)
● Light Source & Power Meter
 Standard Optical Power Meter (middle port)
– Detect and report Tone or Wave ID
– Measure power and loss
 Standard Optical Light Source (right port)
– Send CW, Noyes Wave ID, or Tone
 Select “Light Source & Power Meter” from Main Menu OPM
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OLS
68
Light Source & (Optical) Power Meter
Use
 & 
to change
Optical Laser
Source (OLS)
Optical Power
Meter (OPM)
F1
F2
F3
Change units:
dB = loss
dBm, W = power
AFL COMPANY CONFIDENTIAL
Hold to set power
meter reference
Change power
meter wavelength
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Setting Reference Values
Setting Reference using ‘one jumper’ method
● Connect Source of each OFL280 to Power Meter of other OFL280
Light Source
& Power Meter
Light Source
& Power Meter
OFL280
OFL280
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70
Setting Reference Values (cont.)
● References can be set for
wavelengths individually, or…
● For faster testing, set references for
multiple wavelengths simultaneously
using Wave ID mode
● Press and hold Ref/Set (F2) to set
new reference values
● Immediately after setting new
references, but before moving test
jumpers, you will see 0 dB (or near 0
dB) loss values.
AFL COMPANY CONFIDENTIAL
F1
F2
F3
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Measuring fiber loss
DO NOT disconnect the source
jumpers after referencing.
Fiber (links) being tested
Light Source
& Power Meter
OFL280
AFL COMPANY CONFIDENTIAL
You will need to add a
receive jumper to the
OPM port of each unit.
Light Source
& Power Meter
OFL280
72
Reduce Test Time with Wave ID
● Wave ID reduces test time up to 80% and eliminates setup errors
 Simultaneously measures loss at multiple wavelengths
 OPM synchronizes to wavelength sent by OLS, eliminating user setup errors
 With OFL280, measure loss on two fibers at once!
Example: Loss Test at 1310 & 1550 nm
Test Steps Without Wave ID
Bring OLS and OPM together to store
references:
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
Bring OLS and OPM to opposite ends
of network under test & measure loss.
1.
2.
3.
4.
5.
6.
7.
8.
1. Connect OLS and OPM to network.
2. Set OLS to Wave ID, 1310 / 1550 nm.
3. OPM detects Wave ID, simultaneously
measures loss at both 1310 & 1550 nm.
AFL COMPANY CONFIDENTIAL
OLS
OPM
OLS
Connect OLS to OPM
Set OLS to Wave ID, 1310 / 1550 nm.
OPM detects Wave ID (< 2 secs)
Store reference (stores refs at both l).
Bring OLS and OPM to opposite ends
of network under test & measure loss.
Connect OLS and OPM to network.
Set OLS to 1310 nm.
Tell OPM user to set OPM to 1310.
Wait for OPM user to meas loss @ 1310.
OPM user sets OPM to 1550 nm.
Tell OLS user to set OLS to 1550 nm.
Wait for OLS user to switch to 1550 nm.
Measure loss @ 1550 nm.
OPM
Test Steps With Wave ID
Bring OLS and OPM together to store
references:
Connect OLS to OPM.
Set OLS to 1310 nm.
Set OPM to 1310 nm.
Store reference.
Set OLS to 1550 nm.
Set OPM to 1550 nm.
Store reference.
Network
Under
Test
73
Loss results with likely macrobend
Greater loss at longer
wavelength (1550 or 1625)
indicates a macro-bend.
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74
The OFL280 OLS & OPM can also …
● Send fiber-identifying tones (270, 330, 1k, 2k Hz)
● Detect fiber-identifying tones (270, 330, 1k, 2k Hz)
● Send CW (continuous wave)
 CW is useful when working with power meters from other vendors.
● Wave ID is recommended when using a Noyes power
meter (or another OFL280) to measure loss
 Wave ID cuts loss test time in half when testing 1310 & 1550,
since it tests both wavelengths simultaneously
 Wave ID eliminates setup errors, since there’s no need to
coordinate wavelength settings in Source and Power Meter located
at opposite ends of the fiber-under-test
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75
To Save OPM Results
 Press the Save key

‘Save As’ page will appear
 Edit Job, End1, End2, Cable ID,
and Fiber number, as needed
  moves the cursor
  changes highlighted character
  selects the next field
 Press Save (F3)
 Folder and File naming:
 Job defines the Job folder
F1
F2
F3
 End1-End2-Cable defines the Cable folder within the Job folder
 End1-End2.ATD defines the filename
 Results for all fibers, wavelengths, and directions are stored in one .ATD file
 OPM Results are saved in AFL’s .ATD file format and may be merged
with OTDR results using AFL’s TRM® 2.0 Test Results Manager
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76
To Recall and View Saved OPM Results
● From Main Menu, press Files (F1)
● Navigate to select OPM Results folder
 OPM Results are labeled with “OPM” icon
 OTDR Results are labeled with “OTDR” icon
 Navigation is same as for OTDR files
● Select Open (F3) to open selected
OPM Results folder
● OPM Results are displayed
F1
F2
F3
 Press dB/dBM (F1) to toggle between display of Power or Loss
 Use  keys to select a result or scroll results up/down
 Press Delete (F2) to delete selected result
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77
To Upload OPM Results to PC
● Upload OPM Results to PC using the same procedure to upload
OTDR Results:
 Connect OFL280 to PC using the supplied USB cable
 From the OFL280 Main Menu press USB (F2)
 From your PC:
– Open ‘My Computer’
– Open ‘OFL (E:)’ (this is your OFL280)
• (Drive letter may be different on your PC)
– Drag RESULTS folder to desktop to copy results to your PC
• You can also open the RESULTS folder to drag selected folders or files to your PC
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78
Thank You!
For more information about AFL/Noyes
test, inspection, and cleaning products,
please visit us on the web at:
www.aflglobal.com
Or, call Sales or Technical Support at:
1 (603) 528-7780
1 (800) 321-5298 (USA)
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