Fluke DTX-CLT CertiFiber User manual

PN 3565770 January 2010, Rev. 1 5/10
©2010 Fluke Corporation. All rights reserved. Printed in USA.
All product names are trademarks of their respective companies.
DTX-CLT CertiFiber®
Optical Loss Test Set
Getting Started Guide
The DTX-CLT CertiFiber Optical Loss Test Set is a rugged, hand-held
instrument used to certify, troubleshoot, and document fiber
cabling installations.
Accessing the Product Manuals
This guide provides basic information to help you get started using
the tester. For more detailed information, see the latest versions of
the DTX-CLT CertiFiber Users Manual and the DTX Series Technical
Reference Handbook provided on the DTX-CLT CertiFiber Product
Manuals CD and on the Fluke Networks website.
WWarningX
To avoid possible fire, electric shock, personal injury,
damage to equipment, or inaccurate test results, read the
safety information in the DTX-CLT CertiFiber Users
Manual before using the tester.
A Power the Tester
• You may power the tester with the ac adapter included or with
the removable lithium ion battery pack.
• You may charge the battery when it is attached or detached
from the tester (Figure 1).
• 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.

gfa01.eps
Figure 1. Charging the Battery (left) and
Removing the Battery (right)
B Prepare to Save Tests
• Check the memory space available:
Turn the rotary switch to SPECIAL FUNCTIONS; then select
Memory Status.
• Select a cable ID source:
You can select IDs from a pre-generated list or create an ID after
each test. Turn the rotary switch to SETUP, select Instrument
Settings, select Cable ID Source; then select a source.
• Set up a job folder:
On the Instrument Settings menu select Current Folder. Select
an existing folder or press JCreate Folder to create a new
folder.
• Enter job information:
On the Instrument Settings menu press Cto show the tab with
the Operator, Site, and Company names. To enter a new name,
select a setting, press JCreate; then use the softkeys, BC
AD, and Hfor editing. Press Nwhen you are
finished.
C Clean and Inspect All Connectors
WCaution
When using the fiber modules, use proper procedures to
clean and inspect 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 the Users Manual for instructions.

D Set the Reference
The reference serves as the baseline power level for loss
measurements.
Set the reference at these times:
• At the beginning of each day using the remote end setup 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.)
• Anytime the tester tells you to set the reference.
To set the reference
1 Turn on the tester and smart remote and let them sit for 5
minutes. Allow additional time if the modules have been
stored above or below ambient temperature.
2 Turn the rotary switch to SETUP, then select Fiber Loss. Set the
following on the Fiber Loss tabs (press Cto see other tabs):
• Test Limit: Select the test limit required for the job. Press
JMore to see other lists of limits.
• Fiber Type: Select the fiber type to be tested.
• Remote End Setup: Set to Smart Remote.
• Bi-directional: Enable this if you are required to test the
fiber in both directions.
• Number of Adapters and Number of Splices: Enter the
number of adapters and splices that will be added to each
direction of the fiber path after the reference is set.
• Connector Type: Select the connector type used in the
cabling to be tested. Select General if the exact type is not
listed.
• Test Method: Select 1 Jumper if you use the reference and
test connection shown in this manual.
3 Turn the rotary switch to SPECIAL FUNCTIONS, then select Set
Reference.
4 The Set Reference screen shows reference connections for the
test method you selected. Figure 2 shows Smart Remote mode.
Clean and inspect the connectors on the testers and test
reference cords, connect the tester and smart remote; then
press P.

gfa02.eps
Figure 2. Setting the Reference in Smart Remote Mode
(1 Jumper Method)
E Make Sure Your Test Reference Cords are
Good
1 Disconnect the test reference cords from the INPUT ports on the
tester and smart remote.
2 Make the connections shown in Figure 3.
3 Turn the rotary switch to AUTOTEST, then press P.
4 Press Hto see the test results. The results for each fiber
(Input Fiber and Output Fiber) must be no more than these
limits:
WCaution
An overall result of PASS does not show that the test
reference cords are good. You must compare the loss to
the limits given here to make sure the cords are good.
Multimode test reference cord:
850 nm: 0.11 dB or less
1300 nm: 0.10 dB or less
(The limits are different because fiber has more loss at 850 nm
than at 1300 nm.)

Singlemode test reference cord:
0.20 dB or less for 1310 nm and 1550 nm
5 If a result is more than the limit shown above, use the procedure
given in the Users Manual to test the cords in the path that
failed (Input Fiber or Output Fiber). When you have good test
reference cords, set the reference and do these steps again
before you test a fiber link.
6 Save the test results to show that you used good test reference
cords to test the link.
Note
Fluke Networks recommends that you use this procedure
to make sure your test reference cords are good before
you test each fiber link.
gfa03.eps
Figure 3. Testing the Test Reference Cords in
Smart Remote Mode