Fluke Dtx-clt User Manual
DTX-CLT CertiFiber
January 2010, Rev. 1 5/10
©2010 Fluke Corporation. All rights reserved.
All product names are trademarks of their respective companies.
®
Optical Loss Test Set
Users Manual
LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke Networks product is warranted to be free from defects in material and workmanship under normal use and service. The
warranty period for the mainframe is one year and begins on the date of purchase. Parts, accessories, product repairs and services are
warranted for 90 days, unless otherwise stated. Ni-Cad, Ni-MH and Li-Ion batteries, cables or other peripherals are all considered parts
or accessories. The warranty extends only to the original buyer or end user customer of a Fluke Networks authorized reseller, and does
not apply to any product which, in Fluke Networks’ opinion, has been misused, abused, altered, neglected, contaminated, or damaged
by accident or abnormal conditions of operation or handling. Fluke Networks warrants that software will operate substantially in
accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke Networks
does not warrant that software will be error free or operate without interruption.
Fluke Networks authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no
authority to extend a greater or different warranty on behalf of Fluke Networks. Warranty support is available only if product is
purchased through a Fluke Networks authorized sales outlet or Buyer has paid the applicable international price. Fluke Networks
reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is
submitted for repair in another country.
Fluke Networks warranty obligation is limited, at Fluke Networks option, to refund of the purchase price, free of charge repair, or
replacement of a defective product which is returned to a Fluke Networks authorized service center within the warranty period.
To obtain warranty service, contact your nearest Fluke Networks authorized service center to obtain return authorization information,
then send the product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB destination). Fluke
Networks assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation
prepaid (FOB destination). If Fluke Networks determines that failure was caused by neglect, misuse, contamination, alteration, accident
or abnormal condition of operation or handling, or normal wear and tear of mechanical components, Fluke Networks will provide an
estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the
Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping point).
THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE
NETWORKS SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING
LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty
is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or
enforceability of any other provision.
4/04
Fluke Networks
PO Box 777
Everett, WA 98206-0777
USA
Contents
Title Page
Overview of Features ................................................................................................... 1
Registration .................................................................................................................. 1
Contacting Fluke Networks ......................................................................................... 2
Accessing the Technical Reference Handbook ........................................................... 2
Additional Resources for Cable Testing Information ................................................. 2
Unpacking ..................................................................................................................... 3
DTX-CertiFiber-M Multimode Kit ........................................................................... 3
DTX-CertiFiber-S Singlemode Kit ........................................................................... 3
DTX-CertiFiber-MS Multimode/Singlemode Kit .................................................... 3
Safety Information ....................................................................................................... 4
Physical Features .......................................................................................................... 7
Installing the Connector Adapter .......................................................................... 11
Installing and Removing Fiber Modules ................................................................ 13
Powering the Tester ..................................................................................................... 14
Localizing the Tester .................................................................................................... 14
Essentials for Reliable Fiber Test Results ..................................................................... 16
Cleaning Connectors and Adapters ....................................................................... 16
i
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
About Setting the Reference .................................................................................. 17
Selecting Test Reference Cords ............................................................................... 18
Testing Your Test Reference Cords ........................................................................ 18
Using Mandrels for Testing Multimode Fiber ........................................................ 18
Fiber Test Settings ........................................................................................................ 21
About 1 Jumper Connections ...................................................................................... 26
Preparing to Save Tests ................................................................................................ 27
Certifying Fiber Cabling ............................................................................................... 28
Autotest in Smart Remote Mode ........................................................................... 28
Autotest in Loopback Mode ................................................................................... 36
Autotest in Far End Source Mode .......................................................................... 44
Using the Visual Fault Locator ..................................................................................... 52
Monitoring Optical Power ........................................................................................... 55
Cable ID Options .......................................................................................................... 58
Memory Functions ........................................................................................................ 59
Viewing Results ....................................................................................................... 59
Deleting Results ....................................................................................................... 59
Uploading Results to a PC ....................................................................................... 59
Options and Accessories .............................................................................................. 60
About LinkWare and LinkWare Stats Software .......................................................... 60
Maintenance ................................................................................................................. 61
Cleaning ................................................................................................................... 61
Replacing Fiber Test Reference Cords .................................................................... 61
Factory Calibration .................................................................................................. 62
Updating the Tester’s Software .............................................................................. 62
Retraining the Battery Gauge ................................................................................ 64
Using the Smart Remote with an OptiFiber™ Certifying OTDR ................................. 65
Certification, Compliance, and Regulatory Information ........................................... 65
ii
CSA Standards ......................................................................................................... 65
Safety ....................................................................................................................... 66
Regulatory Information .......................................................................................... 66
Appendix A: How to Test Your Test Reference Cords ............................................... 67
Appendix B: Test Method Reference Table ................................................................ 75
Appendix C: Modified 1 Jumper Method ................................................................... 77
Index
Contents
iii
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
iv
List of Figures
Figure Title Page
1. Tester Front Panel Features ................................................................................................. 7
2. Tester Side and Top Panel Features .................................................................................... 8
3. Smart Remote Features........................................................................................................ 9
4. Fiber Module Features .........................................................................................................10
5. SC, ST, LC, and FC Connector Adapters............................................................................... 11
6. Installing the Connector Adapter........................................................................................ 12
7. Installing and Removing Fiber Modules ............................................................................. 13
8. Removing the Battery Pack.................................................................................................. 15
9. Smart Remote Battery Status Shown After Power-Up....................................................... 15
10. Wrapping a Test Reference Cord Around a Mandrel ........................................................ 20
11. Example of How to Determine the Number of Adapters Setting..................................... 23
12. Equipment for Testing in Smart Remote Mode (1 Jumper Method) ................................ 29
13. Setting the Reference in Smart Remote Mode (1 Jumper Method) ................................. 31
14. Testing the Test Reference Cords in Smart Remote Mode ................................................ 33
15. Testing a Fiber Link in Smart Remote Mode (1 Jumper Method) ..................................... 35
16. Equipment for Testing in Loopback Mode (1 Jumper Method)........................................ 37
17. Setting the Reference in Loopback Mode (1 Jumper Method)......................................... 39
v
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
18. Testing the Test Reference Cords in Loopback Mode........................................................ 41
19. Testing a Fiber in Loopback Mode (1 Jumper Method)..................................................... 43
20. Equipment for Testing in Far End Source Mode (1 Jumper Method) .............................. 44
21. Far End Source Mode Reference Connections (1 Jumper Method)................................... 47
22. Testing the Test Reference Cords in Far End Source Mode ............................................... 49
23. Testing a Link in Far End Source Mode (1 Jumper Method).............................................. 51
24. Equipment for Using the Visual Fault Locator.................................................................... 52
25. Using the Visual Fault Locator............................................................................................. 54
26. Equipment for Monitoring Optical Power.......................................................................... 55
27. Connections for Monitoring Optical Power........................................................................ 57
28. Updating the Software with a PC ....................................................................................... 63
29. Updating the Software with an Updated Tester................................................................ 64
A-1. Equipment for Testing Test Reference Cords ..................................................................... 68
A-2. Examples of Fiber Endfaces ................................................................................................. 70
A-3. Reference Connections ........................................................................................................ 71
A-4. Connections for Testing a Test Reference Cord.................................................................. 73
C-1. Modified 1 Jumper Method: Smart Remote Mode Reference Connections..................... 78
C-2. Modified 1 Jumper Method: Smart Remote Mode Test Connections............................... 79
vi
DTX-CLT CertiFiber® Optical Loss Test Set
Overview of Features
The DTX-CLT CertiFiber Optical Loss Test Set (OLTS) is a
rugged, hand-held instrument used to test and certify
fiber optic cabling installations. The tester offers the
following functions and features:
•
Measures optical power loss and length on dual-fiber
cabling. The DTX-MFM2 module tests multimode
cabling at 850 nm and 1300 nm. The DTX-SFM2
module tests singlemode cabling at 1310 nm and
1550 nm. The DTX-GFM2 module features a VCSEL for
testing multimode cabling at 850 nm and 1310 nm
when a VCSEL source is required.
•
Each module transmits both wavelengths (850 nm and
1300 nm, 850 nm and 1310 nm, or 1310 nm and
1550 nm).
•
Interchangeable connector adapters allow reference
and test connections that meet ISO standards for most
SFF (small form factor) fiber connectors.
•
Provides pass/fail results based on industry-standard
limits.
•
Visual fault locator helps you locate breaks, bad
splices, bends, and check fiber continuity and polarity.
•
FindFiber™ function helps you identify and verify fiber
connections.
Registration
Registering your product with Fluke Networks gives you
access to valuable information on product updates,
troubleshooting tips, and other support services. To
register, fill out the online registration form on the Fluke
Networks website at www.flukenetworks.com/registration.
1
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
Contacting Fluke Networks
Note
If you contact Fluke Networks about your tester,
have the tester's software and hardware version
numbers available if possible.
www.flukenetworks.com
support@flukenetworks.com
+1-425-446-4519
•
Australia: 61 (2) 8850-3333 or 61 (3) 9329 0244
•
Beijing: 86 (10) 6512-3435
•
Brazil: 11 3759 7600
•
Canada: 1-800-363-5853
•
Europe: +31-(0) 40 2675 600
•
Hong Kong: 852 2721-3228
•
Japan: 03-6714-3117
•
Korea: 82 2 539-6311
•
Singapore: 65-6799-5566
•
Taiwan: (886) 2-227-83199
•
USA: 1-800-283-5853
Visit our website for a complete list of phone numbers.
Accessing the Technical Reference Handbook
The DTX Series CableAnalyzer Technical Reference
Handbook provides additional information on the tester
and the fiber modules. The handbook is available on the
CD included with your DTX-CLT CertiFiber and on the DTX
CableAnalyzer product page on the Fluke Networks
website.
Additional Resources for Cable Testing Information
The Fluke Networks Knowledge Base provides answers to
common questions about Fluke Networks products, along
with articles on cable testing techniques and technology.
To access the Knowledge Base, log on to
www.flukenetworks.com, then click Support >
Knowledge Base at the top of the page.
2
Unpacking
Unpacking
The DTX-CLT CertiFiber tester comes with the accessories
listed below. If something is damaged or missing, contact
the place of purchase immediately.
DTX-CertiFiber-M Multimode Kit
•
DTX-CLT CertiFiber with lithium-ion battery pack
•
DTX-CLT CertiFiber SmartRemote with lithium-ion
battery pack
•
Two DTX-MFM2 Fiber Modules for testing at 850 nm
and 1300 nm
•
Two 50/125 µm multimode test reference cords,
2 m, SC/SC
•
Two red mandrels for 50 /125 µm fiber with 3 mm
jackets
•
DTX-CLT CertiFiber Getting Started Guide
•
DTX-CLT CertiFiber Product Manuals CD
•
LinkWare Software CD
DTX-CertiFiber-S Singlemode Kit
•
DTX-CLT CertiFiber with lithium-ion battery pack
•
DTX-CLT CertiFiber SmartRemote with lithium-ion
battery pack
•
Two DTX-SFM2 Fiber Modules for testing at
1310 nm and 1550 nm.
•
Two 9/125 µm singlemode test reference cords, 2 m,
SC/SC
•
DTX-CLT CertiFiber Getting Started Guide
•
DTX-CLT CertiFiber Product Manuals CD
•
LinkWare Software CD
DTX-CertiFiber-MS Multimode/Singlemode Kit
•
DTX-CLT CertiFiber with lithium-ion battery pack
•
DTX-CLT CertiFiber SmartRemote with lithium-ion
battery pack
•
Two DTX-MFM2 Fiber Modules for testing at 850 nm
and 1300 nm
•
Two 50/125 µm multimode test reference cords,
2 m, SC/SC
•
Two red mandrels for 50 /125 µm fiber with 3 mm
jackets
-continued-
3
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
•
Two DTX-SFM2 Fiber Modules for testing at
1310 nm and 1550 nm.
•
Two 9/125 µm singlemode test reference cords, 2 m,
SC/SC
•
DTX-CLT CertiFiber Getting Started Guide
•
DTX-CLT CertiFiber Product Manuals CD
•
LinkWare Software CD
Safety Information
Table 1 shows the international electrical symbols used on
the tester or in this manual.
Table 1. International Electrical Symbols
X
Warning: Risk of fire, electric shock, or
personal injury.
Note
The test reference cords and connector adapter
types provided are suitable for testing SCterminated links. Other test reference cords and
adapter types are required for other connector
types or 62.5 /125 µm fiber. Many are available as
accessories from Fluke Networks.
4
W
j
*
~
Warning or Caution: Risk of damage or
destruction to equipment or software. See
explanations in the manuals.
Do not connect this equipment to public
communications networks, such as telephone
systems.
Warning: Class 1 laser (OUTPUT port). Risk of
eye damage from hazardous radiation.
Class 2 laser (VFL port). Do not stare into
beam.
Do not put products containing circuit boards
into the garbage. Dispose of circuit boards in
accordance with local regulations.
Safety Information
WWarningX
To avoid possible fire, electric shock, or personal
injury:
•
Do not open the case; no user-serviceable parts
are inside.
•
Do not modify the tester.
•
Use only ac adapters approved by Fluke Networks
for use with the DTX tester to charge the battery
or power the tester.
•
When servicing the tester, use only specified
replacement parts.
•
Do not use the tester if it is damaged. Inspect the
tester before use.
•
If this equipment is used in a manner not specified
by the manufacturer, the protection provided by
the equipment may be impaired.
•
Do not use the tester if it operates abnormally.
Protection may be impaired.
WWarning: Class 1 and Class 2
Laser Products
To avoid possible eye damage caused by
hazardous radiation:
•
Never look directly into optical connectors. Some
sources produce invisible radiation that can
permanently damage your eyes.
•
Keep the fiber module’s OUTPUT port covered
with a dust cap or keep a test reference cord
attached. The OUTPUT port may be active even
when a test is not in progress. Covering the port
reduces the risk of accidental exposure to
hazardous radiation.
•
Never start a test or activate the OUTPUT port or
VFL port without first connecting a fiber to the
port you will use.
*
5
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
•
Never look directly into the visual fault locator
output. Momentary exposure to the locator’s
output will not damage your eyes; however,
direct, long-term exposure is potentially
hazardous.
•
Do not use magnification to view the optical
outputs without proper filtering.
•
Use of controls, adjustments, or procedures not
stated herein might result in hazardous radiation
exposure.
WCaution
To avoid disrupting network operation, to
avoid damaging the tester or cables under test,
to avoid data loss, and to ensure maximum
accuracy of test results:
•
Never connect the tester to an active network.
Doing so may disrupt network operation.
•
Always keep fiber modules installed in the
testers.
•
Turn off the tester before attaching or removing
modules.
•
When using the fiber modules, use proper
cleaning procedures to clean all fiber connectors
before every use. Neglecting this step or using
improper procedures can cause unreliable test
results and may permanently damage the
connectors. See page 16.
•
Use only high-quality test reference cords that
comply with ISO/IEC 14763-3. Test the cords at
regular intervals. See Appendix A.
•
Cover all connectors with dust caps when not in
use.
•
Store the connector adapters for the fiber module
in the canisters provided.
•
Do not touch the photodiode lens (see Figure 6).
•
Do not overtighten the adapter or use tools to
tighten the adapter.
•
Use a Fluke Networks FiberInspector Video
Microscope to periodically inspect the fiber
module’s OUTPUT connector for scratches and
other damage.
6
Physical Features
11
10
9
8
7
6
Figure 1. Tester Front Panel Features
F1 F2 F3
EXIT
MONITOR
TALK
Physical Features
A
LCD display with backlight and adjustable brightness.
B
P: Starts the currently selected test.
C
N: Saves Autotest results in memory.
D
Rotary switch selects the tester’s modes.
E
M: On/off key.
F
O: Press to use the headset to talk to the person at
the other end of the link.
G
1
G: Press to switch the backlight between bright and
dim settings. Hold for 1 second to adjust the display
contrast.
H
BCAD: Arrow keys for navigating
ENTER
SINGLE
TEST
TEST
SAVE
AUTO
TEST
SETUP
SPECIAL
FUNCTIONS
2
3
4
5
gfd03f.eps
through screens and incrementing or decrementing
alphanumeric values.
I
H: Enter key selects the highlighted item from a
menu.
J
I: Exits the current screen without saving changes.
K
J K L: The softkeys provide functions
related to the current screen. The functions are shown
on the screen above the keys.
7
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
C
D
E
Figure 2. Tester Side and Top Panel Features
B
A
gfd04f.eps
A
Fiber module. See Figure 4.
B
Bail.
C
USB port for uploading test reports to a PC and for
updating the tester’s software.
D
Headset jack for talk mode.
E
Connector for the ac adapter. The LED turns on when
the tester is connected to ac power.
•
Red: Battery is charging.
•
Green: Battery is charged.
•
Flashing red: Charge timeout. The battery failed to
reach full charge within 6 hours. See “Powering the
Tester” on page 14.
8
A
B
C
D
E
F
Figure 3. Smart Remote Features
Note
The LEDs also act as a battery gauge. See Figure
9 on page 15.
gfd05f.eps
Physical Features
A
Pass LED lights when a test passes.
B
Test LED lights during cable tests.
C
Fail LED lights when a test fails.
D
Talk LED lights when the smart remote is in talk mode.
Press Oto adjust the volume.
E
The TONE LED is not used for tests on fiber cabling.
F
Low battery LED lights when the battery is low.
G
P: Starts the test currently selected on the main unit.
H
O: Press to use the headset to talk to the person at
the other end of the link. Press again to adjust the
volume. Press and hold to exit talk mode.
I
M: On/off key.
J
USB port for updating the tester’s software with a PC.
K
Headset jack for talk mode.
L
Connector for the ac adapter, as described in Figure 2.
M
Fiber module. See Figure 4.
9
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
Warning
W
Never look directly into
optical output connectors (B
and D). Some sources produce
invisible radiation that can
permanently damage your
eyes.
*
gfd06f.eps
A
Button for activating the visual fault locator (B) and output port (D). See
“Using the Visual Fault Locator” on page 52 and “Autotest in Far End
Source Mode” on page 44.
B
Universal fiber connector (with dust cap) for the visual fault locator output.
The connector accepts 2.5 mm ferrules. The LED below the connector
indicates the locator’s mode (continuous or blinking).
C
Input connector with dust cap. Receives optical signals for loss, length, and
power measurements. You can change the connector adapter to match the
connectors on the fiber under test. See Figure 6.
D
SC output connector with dust cap. Transmits optical signals for loss and
length measurements.
E
The LED below the connector is red when the output is transmitting the
module’s shorter wavelength, and green for the longer wavelength.
F
Laser safety label (shown at right).
CAUTION
Figure 4. Fiber Module Features
amd128i.eps
10
Physical Features
Installing the Connector Adapter
You can change the fiber module's input connector
adapter to connect to SC, ST, LC, and FC fiber connectors
(Figure 5). Additional adapter styles may be available.
Check the Fluke Networks web site for updates.
amd37f.eps
Figure 5. SC, ST, LC, and FC Connector Adapters
WCaution
•
Cover all connectors with dust caps when not in
use.
•
Store the connector adapters for the fiber module
in the canisters provided.
•
Do not touch the photodiode lens (see Figure 6).
•
Do not overtighten the adapter or use tools to
tighten the adapter.
To install a connector adapter, refer to Figure 6 and do the
following:
1
Locate the slot in the fiber module connector and the
key on the adapter ring.
2
Holding the adapter so it does not turn in the nut,
align the adapter's key with the module connector's
slot and slide the adapter onto the connector.
3
Screw the nut onto the module connector.
11
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
12
amd99f.eps
Figure 6. Installing the Connector Adapter
Installing and Removing Fiber Modules
Figure 7 shows how to install and remove the fiber
modules.
WCaution
To prevent damage to the module connectors,
always keep fiber modules installed in the
testers.
Physical Features
gfd34f.eps
Figure 7. Installing and Removing Fiber Modules
13
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
Powering the Tester
•
You may charge the battery when it is attached or
detached from the tester. Figure 8 shows how to
remove the battery.
•
The battery charges fully in about 4 hours with the
tester off. A fully-charged battery lasts for at least 12
hours of typical use.
Note
The battery will not charge at temperatures outside
of 0 °C to 45 °C (32 °F to 113 °F). The battery
charges at a reduced rate between 40 °C and 45 °C
(104 °F and 113 °F).
•
The battery status icon ( ) near the upper-right
corner of main screens shows the battery’s charge
level. The smart remote’s LEDs show the smart
remote’s battery status at the end of the power-up
cycle, as shown in Figure 9.
•
For additional battery information, connect the main
tester and smart remote through link adapters, turn
the rotary switch to SPECIAL FUNCTIONS; then select
Battery Status. See page 64 for information on
retraining the battery gauge.
•
If the battery does not reach full charge within 6 hours,
the battery LED flashes red. Verify that the battery was
within the temperature range given above during
charging and that the correct ac adapter was used.
Disconnect then reconnect ac power and try charging
the battery again. If the battery does not charge the
second time, retrain the battery gauge. See page 64.
Localizing the Tester
Local settings include Language, Date, Time, Numeric
Format, Length Units, and Power Line Frequency.
1
Turn the rotary switch to SETUP.
2
Use D to highlight Instrument Settings at the
bottom of the list; then press H.
3
Use Cand D to find and highlight Language on
the bottom of tab 2; then press
4
Use D to highlight the desired language; then
press H.
5
Use the arrow keys and H to find and change other
local settings on tabs 2, 3, and 4 under Instrument
Settings.
H.
14
84 % - 100 %
67 % - 83 %
51 % - 66 %
Localizing the Tester
PASS
TEST
FAIL
PASS
TEST
FAIL
TALK
TONE
LOW BATTERY
Figure 8. Removing the Battery Pack
gfd07f.eps
34 % - 50 %
18 % - 33 %
0 % - 17 %
TALK
TONE
LOW BA
TEST
TALK
Figure 9. Smart Remote Battery Status
Shown After Power-Up
gfd08f.eps
15
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
Essentials for Reliable Fiber Test Results
To get reliable fiber test results, you must follow proper
cleaning and referencing procedures and, in some cases,
use mandrels during testing.
Cleaning Connectors and Adapters
Always clean and inspect fiber connectors before making
connections. Use fiber optic solvent and optical-grade
wipes or swabs to clean connectors as follows:
Bulkhead Connectors and the Fiber Module's Output Connector
Note
Use a 2.5 mm foam swab for cleaning the fiber
module's output connector.
1
Touch the tip of a fiber optic solvent pen or swab
soaked in solvent to a lint-free dry wipe or fiber
cleaning card.
2
Touch a new, dry swab to the solvent spot on the wipe
or card.
3
Push the swab into the connector; twist it around 3 to
5 times against the endface, then remove and dispose
of the swab.
4
Dry the connector with a dry swab by twisting it
around in the connector 3 to 5 times.
5
Inspect connectors with a fiber microscope, such as the
Fluke Networks FiberInspector Video Microscope
before making connections.
Fiber Module's Input Connector
1
Remove the connector adapter to expose the
photodiode lens (see Figure 6).
2
Use the method described in steps 1 and 2 above to
dampen a swab with solvent.
3
Twist the damp swab around against the lens 3 to 5
times; then twist a dry swab around against the lens 3
to 5 times.
Connector Adapters and Fiber Adapters
Periodically clean connector adapters and fiber adapters
with a swab and fiber optic solvent. Dry with a dry swab
before use.
16
Essentials for Reliable Fiber Test Results
Connector Ends
1
Touch the tip of a fiber optic solvent pen or swab
soaked in solvent to a lint-free dry wipe or fiber
cleaning card.
2
Wipe the connector end-face across the solvent spot,
then back and forth once across the dry area of the
wipe or card.
Note
Some connector styles, such as VF-45, may require
a different cleaning method.
3
Inspect connectors with a fiber microscope, such as the
Fluke Networks FiberInspector Video Microscope
before making connections.
Always cover unused connectors with protective caps. Clean
caps periodically with a swab or wipe and fiber optic
solvent.
About Setting the Reference
The reference serves as the baseline power level for loss
measurements. Regular referencing helps account for
minor variations in source power and connection integrity.
Also, since the reference is the baseline for measurements,
the losses of the test reference cords and adapters used
during referencing are excluded from test results.
Note
Turn on the tester and smart remote and let them
sit for 5 minutes before setting the reference.
Allow additional time if the modules have been
stored above or below ambient temperature.
You should set the reference at these times:
•
At the beginning of each day using the remote end
setup (Figures 13 through 23) you will use that day.
•
Anytime you reconnect a test reference cord to the
module’s output or other source.
•
Anytime the tester warns you that the reference is out
of date.
•
Anytime you see a negative loss measurement. (See
the Technical Reference Handbook for more
information.)
You must set the reference at these times:
•
Anytime you change the fiber module in the tester or
smart remote.
•
Anytime you start using a different smart remote.
•
Anytime you change the Tes t Me tho d in Setup.
•
Twenty-four hours after the reference was previously
set.
17
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
WCaution
Do not disconnect the test reference cords from
the testers' output ports after setting the
reference. Doing so may alter the amount of
optical power launched into the fiber and
invalidate the reference.
Reference values should not change by more than a few
tenths of a dB from day to day. Larger changes may
indicate a problem with the test reference cords or
connections.
See the sections on Smart Remote, Loopback, and Far End
Source modes for details on setting the reference for each
mode.
Selecting Test Reference Cords
The DTX Fiber Modules come with high-quality test
reference cords.
To ensure that your measurements are accurate and
repeatable, use test reference cords provided by Fluke
Networks or cords of the same quality. See "Replacing
Fiber Test Reference Cords" on page 61.
Testing Your Test Reference Cords
You must test your test reference cords at regular intervals.
Use the procedure given in Appendix A to test the cords
initially. After that, use the procedure given with the
procedures for certifying cabling to monitor the condition
of the cords.
Using Mandrels for Testing Multimode Fiber
You should use mandrels when testing multimode fiber
with the DTX-MFM2 fiber modules. Mandrels can improve
measurement repeatability and consistency. They also
allow the use of LED light sources to certify 50 µm and
62.5 µm fiber links for current and planned high bit-rate
applications, such as Gigabit Ethernet and 10 Gigabit
Ethernet.
WCaution
Do not use mandrels when testing with the
DTX-GFM2 fiber modules.
18
Essentials for Reliable Fiber Test Results
The red mandrels included with the DTX-MFM2 are
compliant with ANSI/TIA-568-C for 50 µm fiber with a
3 mm jacket. Mandrels for 62.5 µm fiber are available from
Fluke Networks. Refer to the appropriate standard for
mandrel requirements if you follow other standards. Table
2 shows a partial list of mandrel requirements for TIA
standards.
Table 2. ANSI/TIA-568-C Mandrel Requirements
Fiber
core size Standard
50 µm ANSI/TIA-568-C.0 6.4.2.1 5 25 mm (1.0 in) 22 mm (0.9 in)
62.5 µm ANSI/TIA-568-C.0 6.4.2.1 5 20 mm (0.8 in) 17 mm (0.7 in)
Wraps Around
Mandrel
Figure 10 shows how to wrap the fiber around a mandrel.
Place mandrels on the tester’s output fibers, as shown in
Figures 13 through 23.
In the reference and test connection diagrams shown on
the tester, mandrels are indicated by a loop in the fiber.
Mandrel Diameter for
250 µm Buffered Fiber
Mandrel Diameter for 3 mm
(0.12 in) Jacketed Cable
19
DTX-CLT CertiFiber Optical Loss Test Set
Users Manual
Place top wrap
in groove under
retainer
Wrap 5 times
in grooves
Figure 10. Wrapping a Test Reference Cord Around a Mandrel
Right:
no bends
at retainer
Wrong:
bends at
retainer
amd67f.eps
20
Loading...