This document provides installers and technicians

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Introduction
This document provides installers and technicians with industry accepted connector
cleaning guidelines, fiber optic connector end face inspection procedures, and fiber optic loss
measurement techniques. Adhering to the following procedures will ensure a reliable and
properly documented fiber optic installation.
All ODM measurement equipment conforms to NIST traceable standards. All connector
cleaning guidelines conform to IEC 61300-3-35 Ed.1.0.
This document is issued as a general reference guideline to support wireless contractors to
effectively test, inspect and document the dB loss of the Sprint – Ericsson sector jumper cable
and Ericsson sector jumper cable with Masterline Extreme hybrid tower cable as a system. This
document adheres to the test, inspection and installation procedures set forth in the Ericsson
Installation Guide document SNV RRU Fiber Cable Installation Guide Rev 4252012[1].
ODM PRC-0368, 10-22-12, Rev G
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Table of Contents
Page
Introduction
2
Section 1
Sprint-Ericsson installation site and components general overview
5
Section 1.1
Test Site overview
5
Section 1.2
Optical Interface Connectors
6
Section 1.3
General Handling of Optical Fiber
6
Section 1.4
Optical Cable Installation
7
Section 1.5
Tools & Test Equipment Required
8
Section 1.6
Training & Certification
8
Section 1.7
Inspection & Cleaning
8
Section 2 – Fiber Optic End Face Inspection and Cleaning Procedures
8
Section 2.1
Grading Template
9
Section 2.2
First Inspection
11
Section 2.3
End Face Acceptability
13
Section 2.4
First Dry Cleaning
13
Section 2.5
One Click Dry Cleaning
13
Section 2.6
Second Inspection
14
Section 2.7
End Face Acceptability
14
Section 2.8
Second Dry Cleaning
15
Section 2.12 Third Inspection
15
Section 2.14 First Wet/Dry Cleaning
15
Section 3 –
Required Test Equipment TTK 500 Sprint &
AC063 Ericsson kit Bill of Materials
18
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Section 4 -
Inspection & dB Loss Test Procedure for Ericsson OIL (Optical
Interface Link) cables and sector cable
21
Section 4.1
Pre Installation
21
Section 4.2
Post Installation
21
Section 4.3
Visual Inspection of end face connectors
21
Section 4.4
Sector Jumper Pretest
21
Section 4.5
System Test
26
Section 5 – Closeout Documentation
28
Section 6 – Technical Support and FAQ
31
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Section 1 Sprint-Ericsson installation site and components general
overview
1.1
Test site overview
Test site connection overview shown in figure 1.
ODC 2 to LC Optical Jumper
MLE Hybrid Tower Cable
Figure 1
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1.2
Optical Interface Connectors
The optical interface connectors used in the Sprint Ericsson installation are LC (Lucent
Connector), H&S ODC plug and H&S ODC socket connectors. These are shown from
left to right in Figure 2 (LC in duplex configuration, ODC Plug, ODC Socket).
Figure 2
1.3
General Handling of Optical Fiber
When handling optical cables, consider the following:
1. Optical cables are sensitive to mechanical stress, sharp bends, kinks, dust, and dirt.
They are not, however, sensitive to electrical interference
2. Make sure not to apply excessive force to the cable
3. Never over-bend the cable. (Refer to the SNV RRU Fiber Cable Installation Guide
Rev 4252012[1] for minimum bend radius for MLE Tower Cable and Ericsson RRU
jumper cable)
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1.4
Optical Cable Installation
Please refer to the SNV RRU Fiber Cable Installation Guide Rev 4252012[1] for
complete optical cable installation practices.
1.5
Tools & Test Equipment Required
The following items are required to properly test and inspect cables and connections
between the RRU and RBS MU.
 RP460 Optical Power Meter
 DLS355 Stabilized laser source
 Optical jumper cables for connection from light source or power meter to:
o ODC MLE
o ODC RRU
o LC Male MLE
 VIS300 (Video Inspection Scope) monitor and probe
 VIS300 probe adaptors:
o ODC socket adapter
o ODC plug adapter
o ODC plug alignment adapter
o 1.25mm universal for LC male
o LC bulkhead adapter
 Torque wrench for H&S ODC connector
 Optical endface cleaning products providing cleaning of 1.25mm, 2.5mm ferrules, H&S
ODC plug and H&S ODC socket connectors:
o 1.25 mm swabs
o One click dry cleaning stick
o SQR cleaning pad
o Approved cleaning solvent
Test Equipment Requirements and Documentation



RP460 Optical Power measurement accuracy +/- 0.25 dB
RP460 and DLS355 calibration certificate
Image manager software with Date & Time Stamped Test Results
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1.6
Training & Certification
Technicians tasked with installing, cleaning and inspecting fiber optic sites are required
to be certified by the inspection and test equipment manufacturer in the proper use of
the inspection and test equipment.
1.7
Inspection & Cleaning

It is imperative that all optical connectors including the connectors to be tested
and test equipment connectors be cleaned and inspected to the standards set
forth in this document. This provides reliable optical connections and prevents
damage or contamination of the connectors.

Technician inspection and cleaning certification shall be made available upon
request or provided with close out documentation.
Section 2 – Fiber Optic End Face Inspection and Cleaning Procedures
Introduction
The purpose of this section is to outline fiber optic connector inspection techniques and industry
standard cleaning procedures to ensure proper connector endface quality prior to testing
installed systems.
WARNING: When working with fiber optic cables always assume the fiber is live.
Invisible laser radiation can cause irreversible injury to the human eye. Never look into
the end of an exposed fiber optic cable, bulkhead, or optical light source. The use of nondirect viewing devices such as the VIS 300 Video Inspection Scope is highly
recommended.
As per document IEC - 61300-3-35 Ed 1.0 the following inspection and cleaning
procedure should be used before installing or testing any fiber optic jumper or trunk cable. Only
use approved test sets, inspection equipment, and cleaning supplies. Any moveable debris on a
fiber optic connector end face is not allowed. After 3 dry cleaning attempts to remove debris a
“wet/dry” cleaning process is suggested.
2.1
Use the following ODM grading overlay template (shown in Figure 4) in conjunction with
the Zone grading criteria table (shown in Figure 5) to determine acceptability of the fiber
end face.
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Figure 4
2um, 5um, and 10um diameter obstructions are provided in the outer most area of the zone
grading overlay. The circle defining the limit of the contact zone has a 3um line width. Zones
are accurately determined by placing the grading template on top of the VIS300 display and
aligning the cladding zone with the cladding on the display. If obstructions and/or scratches are
visible in the critical, cladding, adhesive, or contact zone you can place each sized reference
obstruction over the obstruction in question to determine acceptability according to the table
below. The 3um contact zone limit circle line width can be placed on top of any scratches to
determine scratch width acceptance according to the table below in figure 5.
Single-Mode Criteria Table
Zone Description
Diameter
Allowable Defects
(Diameter)
None visible at 200X
Allowable Scratches
(Width)
None visible at 200x
A
Critical Zone
25um
B
Cladding Zone
25 to 120um
Any less than 2um
5 from 2 - 5um
None > 10um
None greater than
3um
C
Adhesive Zone
120 to 130um
None > 10um
Any scratch OK
D
Contact Zone
130 to 250um
None > 10um
Any Scratch OK
Figure 5
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Figure 6 shows alignment of the Grading template to the cladding area to determine if
obstruction and/or scratches are present in the relevant zones.
Figure 6
Figure 7
Comparing 2um zone template obstruction with obstruction in cladding zone.
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Figure 8
Comparing 3um line width contact zone line width with scratch across contact and cladding zon
First Inspection
2.2
Inspect the fiber optic cable end face using the VIS300 with probe and LC adapter tip. In
Figure 9 an LC fiber optic end face is being inspected. Please note that the Sprint Ericsson design incorporates the use of a Hybrid Fiber/Power cable system. This trunk
and optical jumper cable system incorporates the use of the ODC 2 fiber optic connector
shown in Figure 10, 11 and 12. Figure 11 and 12 also show the VIS300 ODC adapters
and the VIS 300 inspection probe inserted into the ODC socket and plug assemblies.
Figure 9
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Figure 10 shows the ODC2 plug on left and ODC2 Socket on right.
Figure 10
Figure 11
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Figure 12
2.3
If the end face is clean of debris, scratches, and no defects are seen using 200x
magnification then the connector is considered acceptable for connection.
First Dry Cleaning
2.4
If the end face shows debris, scratches, or defects according to Section 2.1 perform the
first dry clean procedure. Use the ACO94 LC Connector Cleaner for cleaning LC
connectors shown in figure 13A. One push/click is generally acceptable.
Push LC Cleaner into LC connector
A
B
Figure 13
2.5
If cleaning an LC bulkhead adapter is required refer to Figure 13B with AC 094 LC
Connector Cleaner. Remove small clear plastic cap for bulkhead push and click
cleaning.
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Figure 14
Figure 14 shows ODC plug and socket one click cleaning.
Second Inspection
2.6
Perform second end face inspection with VIS300-USB Video Inspection Scope. Refer
to figure 9 and 12.
2.7
If the end face is clean of debris, scratches, and no defects are seen using 200x
magnification then the connector is considered acceptable for connection.
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Second Dry Cleaning or Grading the Fiber End Face
2.8
If the end face shows the debris has moved perform the second dry clean
method. Refer to figure 13.
2.9
If all debris was unchanged or unmoved the end face must be graded. Refer to
“Grading the Fiber End Face” in Section 2.1.
2.10
If grading determines the end face is acceptable then make your connection.
2.11
If grading determines the end face is unacceptable according to section 2.1,
perform second dry cleaning. Refer to figure 13.
Third Inspection
2.12
Perform third end face inspection with VIS300-USB Video Inspection Scope. Refer to
figure 9 and 12.
2.13
If the end face is clean of debris, scratches, and no defects are seen using 200x
magnification then the connector is considered acceptable for connection.
First Wet/Dry Cleaning of Endface Connectors
2.14
The SQR pad supplied is designed to be used in conjunction with the MX Fiber Wash
Pen.
2.15
Place the sheet protector with the arrows, under the first sheet of cleaning material.
Refer to Figure 15A
A
B
Figure 15
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2.16
Each sheet is designed for four connector cleanings. Do not clean over already used
sheets of cleaning material
2.17
Take the MX Electro-Wash Pen and apply a coin size spot of solvent by pressing the
pen tip to the exposed wipe near the top of the sheet separator. Be careful not to apply
too much solvent. Refer to Figure 15B.
2.18
Hold the end of the connector at a 90˚ angle and gently press the connector into the wet
spot on the wipe. Refer to Figure 16A. Gently drag the connector from the wet spot
across the remaining dry portion of the wipe ending at the bottom of the wipe shown in
Figure 16B.
A
B
Figure 16
Cleaning Bulkhead Connectors and Multi-pin Connectors Using 1.25mm and 2.5mm
Cleaning Swabs
2.19
Take the MX Electro-Wash Pen and apply a coin size spot of solvent by pressing the
pen tip to the exposed wipe near the top of the sheet separator. Be careful not to apply
too much solvent. Refer to Figure 15B.
2.20
Gently moisten the tip of the cleaning swab to the wet surface. Refer to Figure 17A.
2.21
Gently clean each of the connector end face of the ODC socket with the wet 2.5mm
cleaning swab. Refer to Figure 17B.
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A
B
Figure 17
Figure 18
2.22
Cleaning of the ODC plug end requires following section 2.19 using a 1.25mm cleaning
swab/stick. Refer to Figure 18.
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Section 3 - Required Test Equipment for Connector Inspection & dB
Loss Testing - TTK 500 Kit
The TTK 500 Bill Of Materials details the required equipment to perform the following
tasks of the Sprint – Ericsson, H&S installation.
 OIL cable and overall system dB loss test
 Portable video inspection of all connectors including the H&S ODC 2 Plug
and Socket connectors
 Connector cleaning kit for the complete endface cleaning of all connector
interfaces including the LC Duplex connector and ODC 2 connector.
 USB software for closeout documentation.
TTK 500
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TTK 500 – Bill of Material
MODEL
DLS 350M
DLS 355M
RP460-02
DESCRIPTION
Dual LED Source 850nm/1300nm with SC
Connector output
Dual Laser Source 1310nm/1550nm SC
Conn.
Power Meter w/ Zero dB/Set Ref, 1000 data
point store & USB download
AC 029
AC 300
Video Inspection Scope - Includes 3 1/2"
monitor w/USB and Image Manager Software,
Probe, Hard Carry Case, AC
Adapter/Charger, 2.5mm Universal Connector
Adapter, SC Bulkhead Adapter, LC bulkhead
adapter and 1.25 universal adapter
LC Adapter for RP460 Optical Power Meter
CR2 Battery Kit / 5 per pack
AC 500
LC-SC, SM, 9/125 Fiber, 1 Meter Cable
AC 502
LC-LC, SM, 9/125 Fiber, 2 Foot Cable
AC550
LC-SC, MM 50/125 fiber
AC552
LC-LC, MM 50/125 fiber
AC 600
SC-SC Adapter
AC 601
LC-LC Adapter
CK 125
Cleaning Kit - Includes fiber cleaning solution,
wipes, 1.25mm swabs, 2.5mm swabs good
for 300 connectors and adapters
AC 094
One Click Connector Cleaner
AC 012
ODM 17" Hard Carry Case
VIS 300USB
APPLICATION
QTY EA
Multimode fiber light source used w/RP 460 power
meter for dB loss test
Singlemode fiber light source used w/RP 460
power meter for dB loss test
Power meter used with light source for dB loss
measurement and storage, also offers USB
transfer to computer for closeout documentation
Portable connector inspection device to view
connector endface and ensure connectors meet
IEC 825 standard after proper cleaning
procedures.
Allows LC connection to optical power meter
Spare Battery Kit
Fiber patch cord to allow calibration of test
instruments for complete system dB loss test
Fiber patch cord to allow calibration of test
instruments for complete system dB loss test
Fiber patch cord to allow calibration of test
instruments for complete system dB loss test
Fiber patch cord to allow calibration of test
instruments for complete system dB loss test
SC adapter to allow legacy(Clearwire) DLS 355 to
test dB loss
LC adapter to allow access to LC duplex
connector on Optical Jumper Cable
Complete Wet/Dry cleaning system for all
connector endfaces including ODC 3 connectors
and System/RF modules (300+ cleanings)
Used for LC connector ends and bulkheads
adapter for quick “dry” clean only
Protective carry case for all instruments and
accessories except for
AC 060
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1
1
1
1
2
2
2
1
1
1
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AC063 – Bill of Materials
MODEL
DESCRIPTION
APPLICATION
AC014
AC 062
Soft padded pouch
Ruggedized test cables for EricssonODC2/LC SM hybrid and sector cables
Store Test Cables and equipment
ODC2 reference cables to allow testing of optical
ODC2 plug and ODC2 socket style cables..
AC100
AC101
AC105
AC200
ODC plug adapter for probe
ODC socket adapter for probe
ODC plug guide for probe plug adapter
ODC torque wrench for H & S cables
AC523
AC4500
LC-Clipped to LC & SC cable
Loopback 0dB, LC Duplex
Allows inspection of ODC plug optical endface
Allows inspection of ODC socket optical endface
Provides improved alignment when using AC0100
Provides proper torque of mating nut on H & S
ODC interconnections
Calibration and dB test cable
Calibration and db test module with lanyard
QTYEA
1
1
1
1
1
1
1
1
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Section 4
Inspection & dB Loss Test Procedure for Ericsson
MLE (Master Line Extreme) Main Hybrid cable and
Optical Interface Link (OIL) Cable




4.1
All cables to be tested using Loopback loss method.
Keep all calibration cables and adapters clean and contamination free.
Calibration cables and adapters should be replaced yearly
dB loss measurement limit for pre test and post test as follows:
Pre-Installation
Prior to installation the OIL sector cables must be inspected, cleaned endface
images saved using the Image Manager Software. The sector jumper cable must be
tested within 24 hours of delivery or receipt of the cable. The optical cable must be
installed within 24 hours of the pre-installation test. The pre-installation test procedure is:




4.2
Remove fiber optic cable connector end face dust cap.
Perform Inspection ,Cleaning and image saving procedures Section 4.3
Perform sector jumper Loopback Loss Test Section 4.4
Reinstall fiber connector end face dust cap.
Post-Installation
Once the cables have been installed they must be tested within 24 hours of the Pre
Test. Post-installation test procedure:
 Perform Loopback System Loss Test Section 4.4
 Mate optical connectors
Note: The close out documentation must be submitted within 24 hours of Post Test.
4.3
Visual inspection of end face connectors using the VIS 300 Video
Inspection Scope
4.3.1 Please refer to figure 19 for LC, figure 20 for ODC socket, and figure 21 for ODC
plug using plug centering adapter with ODC plug connector end face inspection
examples. Connector end face debris or contamination must pass the criteria as
set forth in IEC 61300-3-35 Ed 1.0. Please see Section 2 for grading and
PASS/FAIL criteria.
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Figure 19
Figure 20
Figure 21
SECTOR OIL CABLE OPTICAL PORTS MUST BE INSPECTED PRIOR TO TEST OR
INSTALLATION OF SYSTEM OPTICAL COMPONENTS.
4.3.2 In addition to all connector end face inspections, all OIL Cable LC Duplex and ODC
socket connector ends will be saved as .jpg images on the laptop computer and provided in
closeout documentation. Please see IMS User Guide Instructions for the VIS 300 – USB for
storage instructions. Please see Figure 22 for saved end face image examples
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Figure 22
Create new folders to properly organize Image and loss data prior to saving images and dB loss readings
as shown below:
Main folder labeled with the site Identification number will contain 3 subfolders.



4.4
FIBER_IMAGES will contain connector end face images
OIL_PRETEST will contain the OIL cable pretest db loss report
SYSTEM_TEST will contain the MLE/ main hybrid trunk and OIL cable
connected as a full system dB loss report
Optical Sector Jumper OIL Pretest
Introduction
This dB loss test will use the Loopback method test for all of the sector jumpers.
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NOTE: Color code or label each OIL cable according to the main hybrid cable color and
sector it will be connected to.
.
4.4.1 To calibrate for total system loss measurement, please refer to Figure 23.
4.4.2
Power on both the RP 460 optical power meter and the DLS 355 light source. Place
both instruments in the 1310nm position. Set the RP 460 in the dBm position. Attach
patch cords as shown in Figure 23. Note typical readings of -3.00 dBm to -4.00 dBm.
(The RP 460 memory should be cleared each day prior to measurements)
4.4.3
Press the dB/dBm button and hold for four seconds or until the second beep is heard.
The RP 460 will now display 0.00dB.
Figure 23
4.4.4
The RP 460 is now calibrated. Remove the loopback module and LC duplex connector
leaving both instruments powered and connected to the yellow patch cords.
4.4.5
Connect the LC duplex ends of the yellow jumper cables to the LC duplex ends of
the ODM ODC plug style reference cable using an LC duplex bulkhead adapter.
4.4.6
Connect the OIL cable to the ODM ODC plug cable and secure using the supplied
Torque wrench which is set to 1N/M.
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4.4.7
Connect the loopback module with LC duplex bulkhead adapter to the LC duplex end of
the OIL cable. Test setup shown in Figure 24
Figure 24
4.4.8
The RP460 is now displaying the loss of the OIL cable.
Sector cable loss measurements must be below 2.6 dB.
NOTE: Test OIL cables in the following order: BLACK, WHITE, YELLOW, BLUE, GREEN,
RED.
4.4.9
Press the SAVE button on the RP460 to save the measurement.
4.4.10 Repeat steps 4.4.6 through 4.4.9 until all OIL cable losses have been saved to the
RP460.
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4.5
Calibration & dB Loss Measurement of System
(OIL cable connected to MLE Main Hybrid Cable)
Introduction
This dB loss test will use the Loopback method test with the OIL cable and MLE Main
Hybrid connected as a system.
4.5.1
Power on both the RP 460 optical power meter and the DLS 355 light source. Place
both instruments in the 1310nm position. Set the RP 460 in the dBm position. Attach
patch cords as shown in Figure 23. Note typical readings of -3.00 dBm to -4.00 dBm.
Refer to figure 25 for calibration setup.
Figure 25
4.5.2
To calibrate the RP 460 press and hold the dB / dBm button for approximately four
seconds and after hearing the audible tone twice. The RP 460 will now read 0.00dB.
4.5.3
Remove the loopback module and LC duplex bulkhead adapter and send to the tower
top and connect to the appropriate OIL cable at the RRU LC duplex end of the OIL
cable.
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4.5.4
Connect the LC duplex end of the yellow calibration cables to the appropriate LC duplex
pair at the base end of the MLE Main Hybrid Cable. Figure 26 shows the RRU
connection on the top left and base MLE connection on right.
Figure 26
4.5.5
The RP460 is now displaying the loss of the system.
System loss measurements must be below 4 dB.
NOTE: Test System cables in the following order: BLACK, WHITE, YELLOW, BLUE,
GREEN, RED.
4.5.6
Press the SAVE button on the RP460 to save the measurement.
4.5.7
Repeat steps 4.5.3 through 4.5.6 until all system losses have been saved to the
RP460. See figure 27 for example of the Data Manager Software window.
Note: If all 6 pairs for each sector are to be tested the Sprint Ericsson Color code feature can be
selected through the setting tab at the top of the main DMS window. This feature will
automatically fill in the color codes in the report viewer. See figure 27 below.
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Figure 27
Section 5 Closeout Documentation
5.1
Fiber test and inspection closeout information for both pre and post test results must be
submitted within 24 hours of the post test and include the following;
1.
Connector images of the of OIL cables
2.
PreTest dB loss report of the OIL cables. Example report shown in figure 28
3.
System dB loss report OIL and MLE Main Hybrid cables connected as a system.
Example report shown in figure 29.
4.
Contractors are required to provide proof of inspection and testing certification of
the technician and certificate of calibration for the test equipment.
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Figure 28
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Figure 29
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Section 6 Technical Support and FAQ
6.1
For technical support on any of the procedures, guidelines contained within this guide or
if you have general questions regarding the fiber portion of this project please call 603524-8350. After normal business hours please email to support@odm-inc.com.
6.2
Frequently Asked Questions
 What is the difference between dBm and dB?
o dBm is an absolute optical power measurement referenced to one
milliwatt of optical energy. It is the starting measurement of the dB loss
measurements.

Why do I get a negative dB reading?
o This reading is often the result of the calibration cables not being as clean
and aligned as the cable under measurement. This “negative reading is
common while measuring very short distance cables (less than 100 feet).
Always keep reference patch cables clean and free from contamination.
Negative readings greater than -.5dB are indicative of other problems in
the measurement. In this case give our tech support group a call at 603524-8350

Will my reading be saved in the RP 460 memory while the battery is changed?
o Yes the RP 460 will retain measurements in a non-volatile memory

Why do I need to inspect all fiber connections
o Short distance fiber systems that fail are typically the result of dirty or
contaminated connector ends. Over 90 % of all failures are attributed to
endface debris. The use of a Video Inspection Scope ensures a quality
connected fiber system.
Optical Design Manufacturing Inc.- 143 Lake Street - Laconia, NH USA 03246
Phone - 603-524-8350 – Fax - 603-524-8332
Web: www.odm-inc.com
Email: support@odm-inc.com
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