Instruction Sheet
MT-RJ Test Kits 408-4579
LOC B
1
of 5
E
2009 Tyco Electronics Corporation, Harrisburg, PA
All International Rights Reserved
TE logo and Tyco Electronics are trademarks.
*Trademark. Other products, logos, and company names used are the property of their respective owners.
TOOLING ASSISTANCE CENTER 1-800-722-1111
PRODUCT INFORMATION 1-800-522-6752 This controlled document is subject to change.
For latest revision and Regional Customer Service,
visit our website at
www.tycoelectronics.com
02 MAR 09 Rev E
1278861-[ ], 1278862-[ ], and 1278863-[ ]
1. INTRODUCTION
MT–RJ Test Kits (listed in Figure 1) contain the cable
assemblies and adapters needed to field test MT–RJ
optical fiber system attenuation and polarity using
optical power meters having either single or dual SC,
straight tip (ST) style, or MT–RJ connector interface.
Dimensions in this instruction sheet are in metric
units [with U.S. customary units in brackets].
Figures are not drawn to scale.
TEST KIT SYSTEM
FIBER
TEST
EQUIPMENT
CONNECTOR
INTERFACE
PARAGRAPH
(For Instruction
On Usage)
1278861-1 50/125-
m
mSC 2.1 or 2.2 NOTE
1278861-2 50/125-
m
mST Style 2.1 or 2.2 NOTE
1278861-3 50/125-
m
mMT-RJ 2.3
1278861-4 50/125-
m
m
G
SC 2.1 or 2.2 NOTE
1278861-5 50/125-
m
m
G
ST Style 2.1 or 2.2 NOTE
1278861-6 50/125-
m
m
G
MT-RJ 2.3
1278862-1 62.5/125-
m
mSC 2.1 or 2.2 NOTE
1278862-2 62.5/125-
m
mST Style 2.1 or 2.2 NOTE
1278862-3 62.5/125-
m
mMT-RJ 2.3
1278862-4 62.5/125-
m
m
G
SC 2.1 or 2.2 NOTE
1278862-5 62.5/125-
m
m
G
ST Style 2.1 or 2.2 NOTE
1278862-6 62.5/125-
m
m
G
MT-RJ 2.3
1278863-1 Singlemode SC 2.1 or 2.2 NOTE
1278863-2 Singlemode ST Style 2.1 or 2.2 NOTE
1278863-3 Singlemode MT-RJ 2.3
1278863-4 Singlemode
G
SC 2.1 or 2.2 NOTE
1278863-5 Singlemode
G
ST Style 2.1 or 2.2 NOTE
1278863-6 Singlemode
G
MT-RJ 2.3
Figure 1
G
MT-RJ SECURE*
products
NOTE 2.1 for Fixed Receiver Interface and
2.2 for Interchangeable Receiver Interface
Important:
The cable assemblies included with these
kits are manufactured under strict production control.
We DO NOT recommend constructing cable
assemblies for use with these kits.
Because of their ease of use, we recommend
using Noyes power meters with an MT-RJ
connector interface available from:
Noyes Fibre Systems, East Gate Park
P.O. Box 398, Laconia, NH 03247
For supporting data and explanations on testing
procedures, refer to White Paper:
MT–RJ Optical Fiber Systems Testing
available
at www.ampnetconnect.com under
Documents/Literature Center/White Papers.
Reasons for reissue of this document are provided in
Section 4, REVISION SUMMARY.
2. USING THE TEST KIT
Ensure that the test kit selected matches the fiber
type (core size) and the test equipment connector
interface.
2.1. Dual Fiber Test Meters with
SC or ST Style Fixed Receiver Interface
Important Before Continuing:
Verify that all cable assemblies are in good condition.
A. Setting the Reference Values
(Figure 2)
1. Connect the SC or ST style plugs of the pinless
MT–RJ jumper J1 to Test Device 1 so that the “A”
lead is connected to the receiver (Rx) and the “B”
lead is connected to the transmitter (Tx).
For multimode
testing, apply 5 non–overlapping
wraps around each supplied mandrel in the Tx
lead. Maintain the wraps during the reference
calibration and for all loss measurements.
2. Connect the SC or ST style plugs of the pinned
MT–RJ jumper J2 to Test Device 2 so that the “A”
lead is connected to the receiver (Rx) and the “B”
lead is connected to the transmitter (Tx).
NOTE
i
NOTE
i
CAUTION
!
408-4579
MT-RJ Test Kits 1278861-[ ], 1278862-[ ], and 1278863-[ ]
Rev
E2
of 5 Tyco Electronics Corporation
Figure 2
Rx1Tx2
Jumper J1 Jumper J2
Adapter
Test Device 1
Pinless
Plug Pinned
Plug
SC or ST Style
Connector Interface
Rx2Tx1
Test Device 2
BABA
Mandrel
Wrap
(Tx Lead
Only)
D
Mandrel Wrap
(Tx Lead Only)
D
D
For Multimode Testing Only
Do Not Use Mandrel Wrap for Singlemode Testing
Setting the Reference Values
3. Connect the MT–RJ jumpers to the adapter.
The fiber type determines the mandrel diameter.
Refer to Figure 3.
4. Depending on the test equipment being used,
record the two power values (in dBm), one in each
direction, or zero the meters. These values are the
reference values for subsequent testing.
Figure 3
50/125 IEC50/125 TIA/EIA 62.5/125
IEC and TIA/EIA
Mandrel Wrap Using Provided Mandrels
B. Testing the System
(Figure 4)
1. Disconnect the pinless MT–RJ plug of jumper J1
from the adapter, then connect the plug to the
MT–RJ jack at one end of the system under test.
2. Connect the standard MT–RJ jumper J3 (has
pinless MT–RJ plugs at each end) to the adapter
(which contains the pinned jumper J2) and to the
MT–RJ jack at the other end of the system under
test.
3. Run the system test, and record the power
values. Calculate the link loss by subtracting those
power values from the reference values previously
taken. The resulting system attenuation should be
less than or equal to the system losses allowed by
Telecommunications Industry Association/Elec–
tronic Industries Alliance (TIA/EIA)–568–B.1,
Commercial Building Telecommunications Cabling
Standards—Part 1
. Refer to Figure 5.
Figure 4
Rx1Tx2
Jumper J1 Jumper J2
Adapter
Test Device 1
Rx2Tx1
Test Device 2
System Under Test
BA BA
JackJack Jumper J3
Pinned
Plug
Pinless
Plug Pinless
Plug
Pinless
Plug
Mandrel Wrap
(Tx Lead Only)
D
Mandrel Wrap
(Tx Lead Only)
D
D
For Multimode Testing Only
Do Not Use Mandrel Wrap for Singlemode Testing
Testing the System
NOTE
i
408-4579
MT-RJ Test Kits 1278861-[ ], 1278862-[ ], and 1278863-[ ]
3
of 5Rev
E
Tyco Electronics Corporation
SYSTEM LENGTH
MAXIMUM ATTENUATION (dB)
CABLING SUBSYSTEM SYSTEM LENGTH
(meters [ft])
Multimode Singlemode
(meters [ft])
850 nm 1300 nm 1310 nm 1500 nm
Horizontal 90 [295] 2.0 2.0 2.0 2.0
Centralized (Splice) 300 [984] 2.9 2.3 2.1 2.1
Centralized (Interconnect) 300 [984] 3.3 2.7 2.6 2.6
Building Backbone 300 [984] 2.6 2.0 1.8 1.8
Campus Backbone 1700 [5577] 7.5 4.0 2.4 2.4
Campus Backbone 2000 [6562] 8.5 4.5 2.5 2.5
Figure 5
2.2. Dual Fiber Test Meters with
SC or ST Style Interchangeable Receiver Interface
Important Before Continuing:
Verify that all cable assemblies are in good condition.
A. Setting the Reference Values
(Figure 6)
1. Connect jumper J1 to Test Device 1 so that the
“B” lead is connected to the transmitter (Tx) and
the MT–RJ plug is placed in the receiver (Rx)
interface of Test Device 2.
For multimode
testing, apply 5 non–overlapping
wraps around each supplied mandrel in the Tx
lead. Maintain the wraps during the reference
calibration and for all loss measurements.
The fiber type determines the mandrel diameter.
Refer to Figure 3.
2. Connect jumper J2 to Test Device 2 so that the
“B” lead is connected to the transmitter (Tx) and
the MT–RJ plug is placed in the receiver (Rx) of
Test Device 1.
3. Depending on the test equipment being used,
record the two power values (in dBm), one in each
direction, or zero the meters. These values are the
reference values for subsequent testing.
B. Testing the System
(Figure 7)
1. Disconnect the MT–RJ plug of jumper J1 from
Test Device 2. Disconnect the MT–RJ plug of
jumper J2 from Test Device 1.
2. Replace the MT–RJ receiver (Rx) interface on
both test devices with an SC or ST style connector
receiver (Rx).
3. Connect the “A” leads (SC or ST style
connectors) of jumper J1 and J2 to their respective
receivers (Rx).
4. Connect the MT–RJ plugs of jumpers J1 and J2
to the MT–RJ jacks of the system under test.
Figure 6
Rx1Tx2
Jumper J1
Jumper J2
Test Device 1
Rx2Tx1
Test Device 2
B B
A A
MT-RJ Connector
Interface MT-RJ Connector
Interface
SC or ST Style
Connector Interface SC or ST Style
Connector Interface
Mandrel Wrap
(Tx Lead Only)
D
Mandrel Wrap
(Tx Lead Only)
D
D
For Multimode Testing Only
Do Not Use Mandrel Wrap for Singlemode Testing
Setting the Reference Values
NOTE
i
408-4579
MT-RJ Test Kits 1278861-[ ], 1278862-[ ], and 1278863-[ ]
Rev
E4
of 5 Tyco Electronics Corporation
JackJack PlugPlug
Figure 7
Rx1Tx2
Jumper J1 Jumper J2
Test Device 1
Rx2Tx1
Test Device 2
System Under Test
BA BA
Replaced with SC or
ST Style Connector
Interface
Replaced with SC or
ST Style Connector
Interface
Mandrel Wrap
(Tx Lead Only)
D
Mandrel Wrap
(Tx Lead Only)
D
D
For Multimode Testing Only
Do Not Use Mandrel Wrap for Singlemode Testing
Testing the System
5. Run the system test, and record the power
values. Calculate the link loss by subtracting those
power values from the reference values previously
taken. The resulting system attenuation should be
less than or equal to the system losses allowed
by TIA/EIA–568–B.1,
Commercial Building
Telecommunications Cabling Standards—Part 1
.
Refer to Figure 5.
2.3. Test Meters with
Dual Fiber MT-RJ Interface
Important Before Continuing:
Verify that all cable assemblies are in good condition.
A. Setting the Reference Values
(Figure 8)
1. Connect the pinless MT–RJ jumper J1 (between
the test devices) to each interface.
Follow the test equipment manufacturer’s
recommendation for launch mode filtering.
2. Depending on the test equipment being used,
record the two power values (in dBm), one in each
direction, or zero the meters. These values are the
reference values for subsequent testing.
B. Testing the System
(Figure 9)
1. Disconnect jumper J1 from one of the devices,
then connect it to the MT–RJ jack at one end of the
system under test.
MT-RJ SECURE cable assemblies must have
the standard ends connected to the test
equipment and the universal (amber) ends free to
connect to the system under test.
Figure 8
Rx Tx
Jumper J1
Test Device 1
MT-RJ Connector
Interface
Rx Tx
Test Device 2
MT-RJ Connector
Interface
Setting the Reference Values
Rx Tx
Test Device 1
Rx Tx
Test Device 2
Figure 9
Jumper J1 Jumper J2
JackJack
System Under Test
Testing the System
NOTE
i
408-4579
MT-RJ Test Kits 1278861-[ ], 1278862-[ ], and 1278863-[ ]
5
of 5Rev
E
Tyco Electronics Corporation
2. Connect jumper J2 to the other device and to
the MT–RJ jack at the other end of the system
under test.
3. Run the system test, and record the power
values. Calculate the link loss by subtracting those
power values from the reference values previously
taken. The resulting system attenuation should be
less than or equal to the system losses allowed
by TIA/EIA–568–B.1,
Commercial Building
Telecommunications Cabling Standards—Part 1
.
Refer to Figure 5.
DANGER: Never View Active Fiber Signals
3. REPLACEMENT AND REPAIR
Test kit components are not repairable. Remove and
replace damaged cable assemblies and adapters.
4. REVISION SUMMARY
Revisions to this instruction sheet include:
S
Updated document to corporate requirements
S
Added Stop! banner
S
Changed orange to amber in NOTE of
Paragraph 2.3, B
S
Added Cleaning Flow Matrix to page 5
