Transcript AFL - Using an M200 OTDR

M200 OTDR Training
Using an M200 OTDR
For M200 Version 1.0.6 released November 2006
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M200 OTDR Training
Outline
• Features
• Test Modes
– Full Auto
– Live
– Expert
• Main Menu Set Up
–
–
–
–
Test Settings
File Settings
General Settings
Event Settings
• Testing
• File Management
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M200 OTDR Training
Features of the M200
• Single-mode, Multimode and ‘Quad’ models
• Short event / attenuation dead zones
– (1.5 / 9 m typical)
• Intermediate range (26 dB) good for access,
FTTH, and premises fiber networks
• Hand-held (1.9 lb)
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M200 OTDR Training
Features of the M200
• Li-ion battery:
– ~ 8 hour operating time
– Tool-free battery door
• New, graphical user interface with web-like
PREV / NEXT keys to view results
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M200 OTDR Training
Features of the M200
• Test, View, & Save As in trace pairs
850/1300nm or 1310/1550nm
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M200 OTDR Training
Features of the M200
• Tool-free, changeable test port adapters
– SC, FC, ST included (LC available-call factory)
• Trace600 software (free-ware)
• Internal & Compact Flash data storage
– Store 1000’s of traces
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M200 OTDR Training
Features (cont.)
• Transflective Color Display
– Crisp and bright indoor & in direct
sunlight
• Dedicated Test & Save Keys
• Integrated VFL (650 nm)
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M200 OTDR Training
Features (cont.)
• Quick disconnect integrated into
boot for wrist strap or other
hanging devices
• USB port to transfer data to PC
using ActiveSync
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M200 OTDR Training
Features (cont.)
• Rich file naming and folder setup
• Standard Bellcore.SOR trace file format
– (GR-196)
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M200 OTDR Training
Features (cont.)
• Touch-screen may be used for text entry
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M200 OTDR Training
M200
Set Up &
Home Page
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M200 OTDR Training
Home Page
•M200 start-up page
•If user hits Back/home key
successively, they will get to this screen
after exiting other screens
•Allows access to File Manager for
reviewing Traces on the M200 and
managing the files and folders
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M200 OTDR Training
Home Page Test Modes
•Full Auto, Live or Expert Test Mode is
selectable from the Home Page using
buttons
•Fiber Type (shown as Single-mode) is not
selectable from the home page
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M200 OTDR Training
Home Page Launch & Receive
1 Launch & 2 Receive
cables are specified
in the test set up
1
2
1
Launch cable only
specified in the test
set up
Fiber Ring
Launch/Receive
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M200 OTDR Training
Home Page Next Tests
•Name for next test:
SMITH HALL 001
•Fiber Number of the next test, can be
incremented from 001 to 999 using the
buttons
•File Storage: as shown next tests will be
stored to Compact Flash (CF) in the folder
named SPG
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M200 OTDR Training
Main Menu
TEST SETTINGS
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M200 OTDR Training
Test Settings: Main Menu -Test Tab
Access Main Menu by pressing
at the Home Page
Test is the first Tab in all test modes
Full Auto
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Live
Expert Auto
Expert Manual
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M200 OTDR Training
Test Settings: Sub Menus
Parameters followed by “…” indicate
there is a submenu.
To access, highlight the parameter and
press select the
button
Fiber Type:
Use default setting or refer to
manufacturers fiber
specifications for the fiber
under test
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M200 OTDR Training
Test Settings: Main Menu - File Tab
Use to create a New Folder or to Change the Folder
into which the Next Test Traces will be saved.
1. Highlight Folder…
2. Press the button to
open the File Manager
3. Use
and
buttons to
choose an existing file
4. Or Press Tools, use the
down arrow to select
New Folder to create a
new folder
Tools Pop up menu
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M200 OTDR Training
File Name Format
Name Format – user selectable
[Cable_Fiber] or [Far_Fiber]
SMITH HALL_001_S13.sor
Wavelength indicator- added by M200
Fiber number –user set, will auto increment
File name prefix – user defined
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M200 OTDR Training
Test Settings: Main Menu - General Tab
• Distance Units: select the units to be
used for distance measurements:
– Meters, Kft, Km, Miles, Feet
• Beeper: Audible tone On or Off
• Language: Select English or other
available language. OTDR must restart to
make current
• View Version: Important for calls to Tech
Support or for upgrading the M200
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M200 OTDR Training
Test Settings: Full Auto Mode
Select the Mode by using
Main Menu Test Tab
•Full Auto, Live, Expert
•Select the Test Port type by using
•Single-mode or Multimode
Specify if using Launch &/or Receive
cables, and their respective length
Full Auto tests will be performed at
two wavelengths per test:
•850/1300nm for Multimode
•1310/1550nm for Single-mode
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M200 OTDR Training
Test Settings: Live Mode
With the Mode line highlighted use the
buttons to select Live
• Specify a Range: 1.5 to 2 x
length of fiber under test
• Live tests will be performed at
ONLY one wavelength per test:
– 850 or 1300nm for Multimode
– 1310 or 1550nm for Single-mode
• Specify if using Launch &/or Receive
cables, and their respective length
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M200 OTDR Training
Test Settings: Expert Mode Auto
Highlight the Mode line and use the
buttons to select Expert
Expert Auto uses default settings to
perform a test but allows the user to
test at a single wavelength if desired
Expert Auto tests can be performed at
one or two wavelengths per test:
– 850 and/or 1300nm for Multimode
– 1310 and/or 1550nm for Single-mode
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M200 OTDR Training
Test Settings: Expert Mode-Manual
With the Mode line highlighted use the
buttons to select Expert
In Expert Manual the user must know
information about the fiber under test
and how to set up an OTDR
Expert Manual tests can be performed
at one or two wavelengths per test:
– 850 and/or 1300nm for Multimode
– 1310 and/or 1550nm for Single-mode
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M200 OTDR Training
Test Settings: Expert Mode - Manual
Use
buttons to specify the parameters for testing
•
Range: set to 1.5 to 2 x length of fiber under test including
launch/receive cables
•
Pulse: (see next slides)
– Narrow pulses are best for resolving close events but
are limited to short links.
– Wide pulses are good for measuring long links
•
Time (Averages): (see next slides)
–
–
–
•
Filter: selectable as On or Off,
–
–
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Traces are always averaged over hundreds or thousands of
pulses.
The trade-off is time vs. trace quality.
After about 3 min, you get very little additional improvement
Smoothes choppy traces.
As a rule of thumb use with PW 1us or greater
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M200 OTDR Training
Too short: less than
link length
Link
Can’t see entire link –
unpredictable results
Good: about 1.5x to
2x link length
Link
Good trace – can
see end of fiber
Too long: much larger
than link length
Link
Trace is “squashed”
into left side of display
Range
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M200 OTDR Training
Too narrow:
Link
About right:
Link
Too wide:
Link
Where is this
this event?
Trace “disappears”
into noise floor
Events can be seen
and trace is smooth
Can’t resolve events
Pulse Width
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M200 OTDR Training
Too few:
About right:
Link
Too many
Link
Trace is noisy – noise
floor is too high
Trace is smooth
Link
Trace is smooth but
waste of time
Averages (Time)
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M200 OTDR Training
Main Menu: Expert - Events Tab
• Events: set to Auto or Off
• Thresholds: set to Default or
User
• Auto Default will generate an
Event Table using the M200
settings
• Off will not automatically
generate an Event Table
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M200 OTDR Training
Main Menu: Expert - Events Tab
• Events: set to Auto
• Thresholds User
– Press Select
and adjust the
parameters using the
navigation buttons
• Auto User will generate an
Event Table using the users
threshold parameter settings
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M200 OTDR Training
Testing
• Clean all connectors to be
involved in testing
• Connect Launch Cable to the
appropriate Test Port and the
Fiber Under Test
• If using connect Receive
Cable to far end of Fiber
Under Test
• Set the OTDR up as
previously explained
• Press Test
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M200 OTDR Training
Trace View Tab
Displays the:
1. OTDR Trace graphically
1
2. Trace set-up parameters
Launch
Cable
3. A and B cursor locations
4. Distance from A to B cursors
in user selected distance units
2
3
4
5
5. Insertion Loss measured from
the A to B cursor
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M200 OTDR Training
Trace View Tab (cont.)
1. Single-mode
2. Dual Wavelength 1310/1550nm
4
5
2
3. 150m Launch Cable
4. Trace is not yet saved
5. As shown traces will be saved:
Launch
Cable
3
1
To the Compact Flash in the
SPG folder as file:
QA Box 001_S13.sor &
QA Box 001_S15.sor
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M200 OTDR Training
Zoom Adjust – Trace View
• From Trace View press the
Zoom Adjust soft key
• Zoom will occur around the
“active” (solid cursor)
– To change cursors press the
select button
• Use the Navigation buttons to
adjust the zoom level
• Press the soft key “OK” when
finished zooming
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M200 OTDR Training
Event Table Tab
• Displays a graph of the
OTDR trace plus test date
in the event table
–
–
–
–
Event Locations
Event Type
Event Reflectance (dB)
Event Insertion Loss
Generated for Full Auto & Expert Tests if Events is set to Auto
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M200 OTDR Training
Event Table Tab
• Event Icons Type
Start
End
Reflective Event
Non-Reflective Event
Gainer
Multiple Event
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M200 OTDR Training
Event Table Tab
• Touching the event in the
table or using the
navigation buttons will
highlight and put the cursor
on the event selected
• The
navigations buttons
will zoom/un-zoom around
the selected event cursor
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M200 OTDR Training
Re-Calculate an Event Table
• Press the soft key for
“Re-Calc” if you
desire to change a
test parameter
• This opens a window
of parameters some
which can be
changed, (black text)
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M200 OTDR Training
Calculate an Event Table
• An Event Table is generated
for Full Auto Tests & Expert
Tests if Events is set to Auto
• Press the soft key for “Calc”
if an Event Table was not
calculated
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M200 OTDR Training
Summary Table
Displays a graph of the trace
Displays a table with
– Link Length
– Optical Return Loss (dB)
– Insertion Loss (dB)
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M200 OTDR Training
Saving a File - File Info Tab
• Displays the fiber set up
parameters of the currently
displayed trace
• Allows you to change the
Name Format, Near, Far or
Cable names, Fiber
Number or Folder where
the test will be saved
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M200 OTDR Training
Saving a File
• Press the dedicated
Save key to save the
file
• You can save from the
Trace, Event Table,
Summary or the Save
Tabs
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M200 OTDR Training
File Management
Opening Traces for Review
Swapping from CF to Internal
Tools
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M200 OTDR Training
Opening a Saved Trace for Review
To review saved traces
Press the Files Soft Key
from the Home Page to
open the File Manager
Use Navigation keys to
select folders or files
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M200 OTDR Training
Opening a Saved Trace for Review
Use Navigation keys to select
folders or files
Use
to move up or down the list
of files/folders
Use
to move to the
Bottom of current list
Top or
Press the select button with the up
arrow
line selected to go up a
level
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M200 OTDR Training
Opening a Saved Trace for Review
Use Navigation
keys to select
folders or files
Use
to move up
or down the list of
files/folders, press
the select key to
highlight the file (file
pair) you would like
to review, press the
open soft key to
open the file
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M200 OTDR Training
Swapping CF to Internal*
• Use the
navigation keys
to select the drive you
desire (will have red lines
above and below it to show
it is selected) Press the
Select key to open that
folder
• If select was pressed in this
*Note: you must
example the CF folder
have a CF card
inserted in the M200
would be opened
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M200 OTDR Training
TOOLS
• In file manager the soft key
Tools opens a window to
allow you to manage files:
–
–
–
–
–
–
–
–
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Cut files/folders
Copy files/folders
Paste files/folders
Delete files/folders
Create New Folders
Rename files/folders
Select All
Select None
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M200 OTDR Training
TOOLS (cont.)
• If moving files it is
recommended to copy and
paste them not cut them
• Assure you have made a
successful copy before
cutting or deleting
files/folders
Example: 1310nm tests selected for copying
Up/down & select were used to select the tests
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M200 OTDR Training
Using an OTDR
• You must use a launch cable to measure the loss
of the near-end connection
• You must use a receive cable to measure the loss
of the far-end connection
• Both cables must use the same type fiber (50 m,
62.5 m, or single-mode) as the link under test
• For testing links under 2 km, the length of the
launch and receive cables should be about 100 m,
for long fibers under test, longer launch and receive
cables may be needed
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M200 OTDR Training
No launch or receive cable
Link
• Without launch and
receive cables the OTDR
cannot measure the IL of
the near-end or far-end
connections.
Fiber IL
1
Start event
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2
End event
• This is a problem in
premises links, which are
typically short, because
these connections
represent a large portion
of total link loss.
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M200 OTDR Training
Launch
Cable
Adding a
launch cable
Link
Fiber + Nearend IL
A
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B
• Adding the launch cable
enables the OTDR to
include the loss of the
near-end connection in
total link loss
calculations, and
measure its reflectance
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M200 OTDR Training
Launch
Cable
Link
Receive
Cable
Adding the
receive cable
Link IL
A
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B
• Adding a receive cable
enables the OTDR to
include the loss of the
far-end connection in
total link loss
calculations, and
measure its reflectance
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M200 OTDR Training
Launch
Cable
Link
Receive
Cable
End-to-end
link loss
• If launch and receive
cables are installed
Link IL
• To see total link loss,
view event table -cumulative loss at last
event will equal total or
“end-to-end” link loss
A
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B
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M200 OTDR Training
Horizontal
Segment
Backbone
Segment
B
A
B
A
B
A
Work Area
Outlet
Horizontal
Patch Panel &
Patch Cords
MM
Launch
Cable
(Fiber Ring)
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SM
OTDR
A
Splice
B
Main
Patch Panel
Receive
Cable
(Fiber Ring)
Using an OTDR
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M200 OTDR Training
Launch Horizontal
Cable
Segment
Backbone
Segment
Receive
Cable
Link
being
tested
OTDR
Patch
(1) Connection Cord
Splice
(Loss  0.4 dB)
A
0
B
-1
Relative
Power
(dB)
(2) Connections
(Loss  0.8 dB)
(1) Connection
(Loss  0.4 dB)
Link Loss
( 2.1 dB)
-2
Splice
(Loss  0.1 dB)
-3
Launch
Cable
Horiz.
Seg.
-4
Rcv.
Cable
Trace
Link Length
( 130 m)
0
50
Reading an OTDR Trace
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Backbone
Segment
OTDR
screen
100
150
200
250
Distance (m)
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M200 OTDR Training
Transferring Files to PC
• Files can be transferred to a PC from the
Compact Flash, using a Compact Flash
Reader
• Files can be transferred directly from the
M200 to a PC using a USB cable. You may
need to install new USB drivers included on
the CD-ROM that comes with the M200
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M200 OTDR Training
To contact Noyes Fiber Systems
Website:
www.afltelecommunications.com
or
www.AFLtele.com
Click on Products > Noyes Test & Inspection
Address:
16 Eastgate Park Road
Belmont NH 03220
Telephone:
800-321-5298 (USA)
603-528-7780
ask for Technical Support or Sales
Fax:
603-528-2025
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