VeEX FX120 User manual

Table of Contents
1.0 General Information
2.0 Safety Information
3.0 Introduction to FX120
3.1 FX120 Overview
3.2 What is xPON
3.3 Key Features
3. xPON Specifications
4.0 Basic Operation
4.1 Connector Panels
5.0 Preparing for Operation
5.1 Equipment Check List
5.2 xPON Test Standards
5.2.1 1G PON Architecture Specifications
5.2.2 10G PON Architecture Specifications
6.0 Optical Power Meter (OPM) Test Mode
6.0.1 OLT and ONT/ONU Messages and Measurements
6.0.2 Signal and Synchronization Status
6.1 Optical Power Meter (OPM) Test Procedure
6.2 Histogram and OLT Loss History
7.0 Advanced Mode
7.1 Advanced Setup
7.2 Active ONU
7.3 PLOAM Decoder
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8.0 V-Test
9.0 Certifications and Declarations
10.0 About VeEX
APPENDIX A xPON DEFINITIONS
APPENDIX B xPON ABBREVIATIONS AND ACRONYMS
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1.0 General Information
This user manual is suitable for novice, intermediate, and experienced users and is intended to help use the features and
capabilities of VeEX products successfully. It is assumed that the user has basic computer experience and skills, and is familiar
with telecommunication and other concepts related to VeEX product usage, terminology, and safety.
Every effort was made to ensure that the information contained in this user manual is accurate. Information is subject to change
without notice and we accept no responsibility for any errors or omissions. In case of discrepancy, the web version takes
precedence over any printed literature. The content in this manual may vary from the software version installed in the unit. For
condition of use and permission to use these materials for publication in other than the English language, contact VeEX, Inc.
©2022 Copyright VeEX, Inc. All rights reserved. VeEX, Sunrise Telecom, Digital Lightwave, Air Expert, CaLan, FaultScout, Fiberizer,
MPA, MTT, RXT, VeGrade, VeriPHY, and VeSion, among others, are trademarks or registered trademarks of VeEX, Inc. and/or its
affiliates in the USA and other countries. All trademarks or registered trademarks are the property of their respective companies. No
part of this document may be reproduced or transmitted electronically or otherwise without written permission from VeEX, Inc.
This manual describes software and/or a device that uses software either developed by VeEX Inc. or licensed by VeEX, Inc. from
third parties. The software is confidential and proprietary of VeEX, Inc. The software is protected by copyright and contains trade
secrets of VeEX, Inc. or VeEX's licensors. The purchaser of this device and/or software, downloaded or embedded, agrees that it
has received a license solely to use the software as embedded in the device and/or provided by VeEX Inc., and to use it solely as
intended and described in this manual. The purchaser is prohibited from copying, reverse engineering, decompiling, or
disassembling the software.
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1.1 Customer Support
For more technical resources, visit www.veexinc.com.
For assistance or questions related to the use of this product, call or e-mail our customer care department for customer support.
Before contacting our customer care department, have the product model, serial number, and software version ready. Please locate
the serial number on the back of the chassis. Please provide this number when contacting VeEX, Inc. customer care.
Support hours may vary depending on the product.
Product Technical Support
Support is generally available 8:00 AM to 8:00 PM, Eastern Standard Time, Monday to Friday.
Phone: [phone]
E-mail: [email protected]
MPA Product Technical Support
Support is generally available 8:30 AM to 5:30 PM, Eastern Standard Time, Monday to Friday.
Phone: [phone]
International: [phone]
E-mail: [email protected]
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1.2 Warranty
For warranty information on VeEX products, go to https://www.veexinc.com/Support/Warranty.
To activate the warranty, please register your product at https://www.veexinc.com/Support/ProductRegistration.
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1.3 Patent Information
VeEX product hardware and software may be protected by one or more patents on file with the United States Patent Office.
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1.4 Documentation Conventions
Icons used in this manual:
Marks a helpful tip (action or method), which can save time and improve
usability of the product.
Provides important information needed to use this product and avoid
missteps.
Cautions against and action or inactivity, which can hinder productivity.
Strongly warns against a condition, an action, or inactivity which can lead
to a health hazard, injury, equipment damage, data loss, and/or financial
losses.
Stop and read before continuing.
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2.0 Safety Information
Safety precautions should be observed during all phases of operation of this instrument. The instrument has been designed to
ensure safe operation however please observe all safety markings and instructions. Do not operate the instrument in the presence
of flammable gases or fumes or any other combustible environment. VeEX Inc. assumes no liability for the customer's failure to
comply with safety precautions and requirements.
Optical Connectors
The test sets display a laser warning icon when the laser source is active to alert the user about a potentially dangerous situation. It
is recommended to:
1. Deactivate the laser before connecting or disconnecting optical cables or patchcords.
2. Never look directly into an optical patchcord or an optical connector interface (SFP+) while the laser is enabled. Even though
optical transceivers are typically fitted with Class 1 lasers, which are considered eye safe, optical radiation for an extended
period can cause irreparable damage to the eyes.
3. Never use a fiber microscope to check the optical connectors when the laser source is active.
Lithium-ion Battery Precautions
Lithium-ion (Li-ion) battery packs are compact and offer high capacity and autonomy, which make them ideal for demanding
applications, like providing long lasting power to portable test equipment. For safety reasons, due to their high energy concentration,
these batteries packs and products containing them must be used, charged, handled, and stored properly, according to the
manufacturer’s recommendations.
Li-ion battery packs contain individual Li-ion cells as well as battery monitoring and protection circuitry, sealed in its plastic container
that shall not be disassembled or serviced.
The test set unit's battery pack is also fitted with a safety connector to prevent accidental short circuits and reverse polarity.
Always charge the unit's battery pack inside the test platform battery bay using the AC/DC adapter supplied by VeEX.
Do not charge or use the battery pack if any mechanical damage is suspected (shock, impact, puncture, crack, etc).
Do not continue charging the battery if it does not recharge within the expected charging time
Storage: For long term storage, the battery pack should be stored at 20°C/68°F (room temperature), charged to about 30 to
50% of its capacity. Spare battery packs should be charged and used at least once a year to prevent over-discharge (rotate
them regularly).
It is recommended to charge and use battery packs at least every three months. Battery packs shall not go without recharging
(reconditioning) for more than six months.
After extended storage, battery packs may reach a deep discharge state or enter into sleep mode. For safety reasons, Li-ion
batteries in deep discharge state may limit the initial charging current (pre-recharge) before starting their regular fast charging
cycle. The pre-charging state may take several hours.
Air transportation of Li-ion batteries is regulated by United Nations' International Air Transportation Association (IATA)
Dangerous Goods Regulations and by country-specific regulations. Please check local regulations and with common carriers
before shipping Li-ion battery packs or products containing relatively large Li-ion battery packs.
Electrical Connectors
Telephone lines may carry dangerous voltages. Always connect the electrical test ports to known test interfaces which carry low
level signals.
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ESD: Electrostatic Discharge Sensitive Equipment
Test modules could be affected by electrostatic discharge. To minimize the risk of damage when
replacing or handling test modules, make sure to follow proper ESD procedures and dissipate any
electrostatic charge from your body and tools and the use proper grounding gear.
Perform all work at a workplace that is protected against electrostatic build-up and
discharging.
Never touch any exposed contacts, printed circuit boards or electronic components.
Always store test modules in ESD protected packaging.
Wear ESD protection and grounding gear when:
Inserting, extracting, or handling test modules.
Inserting or removing SFPs, XFPs, QSFPs, or CFPs from the platform.
Connecting or disconnecting cables from modules or platform.
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3.0 Introduction
3.1 FX120 Overview
The VeEX® FX120 XG(S)-PON Analyzer is designed to assist with PON ONT/ONU service activation and aid in troubleshooting.
When connected at the customer site between the splitter and Optical Network Unit/Optical Network Terminal (ONU/ONT), the unit
passively monitors downstream and upstream GPON and XGS-PON traffic, tests optical power levels for compliance to standards
and when available captures/decodes PLOAM messages exchanged from the OLT and ONT to provide PON-ID per ITU-T, OLT
Transmit power, PON type and Class, ONU ID, ONU Serial Number, and ONU Status.
The operator is assumed to have received basic training in fiber optics and related testing and measurement practices.
1G/10G PON Optical Power Meter with PON ID Analysis per ITU-T
1490/1577 PON ID decode and optical power measurement
1270/1310 ONU ID decode and optical power measurement
1550 RF video optical power measurement
Speed test up to 10G
3.2 What is xPON
The International Telecommunications Union standards (ITU-T G.984 and G.987) describes attributes of passive optical network
(xPON) systems. xPON utilizes optical wavelength division multiplexing (WDM) so a single fiber from a provider’s central office can
be split to serve multiple homes and businesses for both downstream and upstream data transmission.
The Optical Line Terminal (OLT) sends 1490nm signal downstream at a rate of 2.488 Gbits/s for GPON or sends 1577nm signal
downstream at a rate of 9.95328 Gbits/s for XGS-PON. Every Optical Network Unit/Optical Network Terminal (ONU/ONT) receives
the same data but is able to recognize data targeted to a specific ONU/ONT. Each ONU/ONT upstream 1310nm signal transmits at
a rate of 1.244 Gbits/s for GPON whilst a 1270nm signal transmits at a rate of 9.95328 Gbits/s for XGS-PON, using a time division
multiplex (TDM) format as each ONU/ONT is assigned a time slot in which it can transmit to the OLT. The total available bandwidth
is divided between all ONUs so each user only gets a fraction of available bandwidth, such as 100 Mbits/s, depending on how the
OLT allocates it. The upstream transmissions, called burst-mode operation, is allocated on an as need basis by the OLT for each
ONU/ONT that needs to send data. Because the TDM method involves multiple users on a single transmission, the upstream data
rate is always less than the maximum available bandwidth to support sharing of bandwidth.
The OLT determines the distance and time delay for each subscriber. The software provides a way to allot time slots to upstream
data for each ONU. The typical split of a single fiber is 1:32 or 1:64. That means each fiber can serve up to 32 or 64 subscribers.
However, split ratios up to 1:256 are possible on some systems.
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3.3 Key Features
Basic Mode
Dual port wavelength filtered, through-meter for simultaneous 1G and 10G ONT/ONU service verification for measuring
GPON ONT upstream and downstream level measurements for 1310 and 1490, for XGS-PON upstream and downstream
level measurement 1577 and 1270nm
Upstream/Downstream LED status indicators for signal and Frame
TC Sync per ITU-T
Automatic PON-ID detection* including OLT-ID, ODN class, Tx power, power level and ODN link pass/fail per ITU-T*
ONU/ONT ID and serial number; rogue and alien ONU detection
Low insertion loss: ≤1.5 dB typ
Advanced Mode
Track/manage active ONT IDs and serial numbers
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PLOAM Capture/Decode
PON Standard Compliance
G-PON (ITU-T G984.2)
XG(S)-PON (ITU-T G.9807.1)
RF video signals 1550 nm (ANSI/SCTE 174 2010)
Requires activation of PON-ID functionality in PON system per ITU-T G.984.3 Amd 3
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3.4 xPON Specifications
Optical – xPON (designed to meet levels as defined by ITU standard when testing at ONT site)
Optical Measurement
Downstream 1490 nm OLT Signal (power
measurement) -35 to +5 dBm
Downstream 1490 nm OLT Signal (data
recovery) -30 to +5 dBm
Spectral passband 1470 to 1510 nm
Downstream 1577 nm OLT Signal (power
measurement) -35 to +5 dBm
Downstream 1577 nm OLT Signal (data
recovery) -30 to +5 dBm
Spectral passband 1572 to 1582 nm
Upstream ONU/ONT 1310 nm Signal (power
measurement) -28 to +10 dBm
Spectral passband 1300 to 1320 nm
Upstream ONU/ONT 1270 nm Signal (power
measurement) -27 to +11 dBm
Spectral passband 1260 to 1280 nm
Fiber Inspection Optional Fiberscope via OTG cable
Optical – xPON (designed to meet levels as defined by ITU standard when testing at ONT site)
Data Analysis
ONT serial numbers identification Standard offering. Extracted from OLT transmission
In-service signal levels with Pass/Fail analysis Standard offering. User defined P/F thresholds
PON identification Standard offering. Extracted from OLT
transmission.
PLOAM Capture/Decode Standard offering.
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4.0 Basic Operation.
4.1 Connector Panels
The FX120 connector panel features an ONU port (To ONU) and an OLT port (To
OLT), and SFP+ port
FX120 connector panel with, ONU, OLT and SFP+ ports
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5.0 Preparing for Operation
5.1 Equipment Check List
The following tools are required to operate the FX120 unit for GPON testing:
SC/APC is the recommended connector.
Cleaning supplies to clean patch cord connectors and equipment optical connectors.
Fiberscope with Universal 2.5mm UPC and APC male tip, SC/APC bulkhead and SC/UPC bulkhead tips to inspect optical
connectors.
Patch cord – one to two patch cords depending on what is required to insert the FX120 between the splitter and ONT.
Mating blue (UPC) with green (APC) connectors will result in excessive insertion loss, reflectance,
and possible damage to the optical connector.
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5.2 xPON Test Standards
5.2.1 1G PON Architecture Specifications
VeEx is providing these architecture diagrams as an example. For the latest specifications, it is
recommended users should check ITU-T website for the latest revision.
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5.2.2 10G PON Architecture Specifications
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6.0 Optical Power Meter (OPM) Test Mode
GPON
XGS-PON
LED Indicators
On screen LEDs indicate the status of upstream (Up) and downstream (Dn) signal and alarm/error traffic detection. Refer to LED Status for more
information.
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GPON/XGS_PON Diagram
Network diagram of the GPON network. Connect the FX120 between the splitter and ONT/ONU.
Do NOT connect the FX120 between the OLT and splitter.
The FX120 should be connected between the splitter and ONT.
6.0.1 OLT and ONT/ONU Messages and Measurements
OLT Information Table
Below the OLT and splitter diagram block, a table displays the transmitting signal level (TX), PON ID, PON Type, and ODN class. This is decoded from
downstream PLOAM messages from the OLT. This information is only available when sent by the OLT and may need to be enabled.
ONU Information Table
ONU ID and ONU S/N information is decoded from downstream PLOAM messages from the OLT that was received from the ONT/ONU during the first
service activation. If the information is not displayed, it may have been missed. Power cycle the ONU to initiate the ranging process again.
ONU Status
GPON Signal Measurement Table
XGS-PON Signal Measurement Table
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At any customer location after the OLT and splitter, the FX120 will display 1490nm and 1310nm signal level values for GPON, 1577nm and 1270nm for
XGS-PON, and 1550nm for RF/CATV. ODN Loss is the difference between the transmitting signal from the OLT (TX) and the DS signal level measured at
the FX120 location.
If the OLT is not broadcasting its output power, the span loss value cannot be calculated.
Green, yellow, and red table colors indicate whether signal levels pass or fail against ITU-T G.984 standard threshold values configured in Setup. Refer to
Test and Profile Settings for information on test profile setup.
Green: The measured signal is above the critical threshold.
Yellow: The measured signal is below marginal and above critical.
Red: The measured signal level is below the critical threshold and does not meet the specification.
Upstream/Downstream/TC-Sync Signal Status
For more information, refer to Signal and Synchronization Status.
Test and Profile Settings
Setup: Setup Test profile
Advanced: Leads to the Advanced Setup, Results, PLOAM and OMCI Decoder, and Active ONU
list.
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6.0.2 Signal and Synchronization Status
The Status table displays detected 1490nm/1577nm downstream, 1310nm/1270nm upstream, and TC-Sync status.
GPON Signal and Synchronization Status Table
XGS-PON Signal and Synchronization Status Table
Status Table
1490nm/1310nm: If OK is displayed, light in the downstream 1490nm or upstream 1310nm direction is detected.
1577nm/1270nm: If OK is displayed, light in the downstream 1577nm or upstream 1270nm direction is detected.
Transmission Connectivity Sync (TC-Sync): OK UL/DL indicates that the FX120 is properly synchronized with the OLT and ONU/ONT traffic. No
UL/DL indicates the OLT and ONU/ONT are not synchronized properly. Consult VeEX technical support if unable to achieve TC-Sync.
OK indicates US or DS light is detected, but does not indicate whether ITU-T Threshold values are
met or if the OLT and ONU/ONT are properly synchronized.
LED Status
Upstream/Downstream LED Status
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On screen LED colors indicate the status of upstream (Up) and downstream (Dn) signals:
Green: Signal level detected. No errors or alarms are present. No further action required.
Red: An error or alarm condition is detected and is currently present. Flashing red indicates a history condition—an error or alarm was detected
during the measurement interval but it is no longer present or active. Tap Advanced to view PLOAM, and Active ONU.
The History button resets the LEDs of past statuses.
If any LED remains red, clean the patch cord connectors that will connect the FX120 to the
ONU/ONT, the FX120 test ports (To ONU, To OLT), and the ONU/ONT ports. Refer to Inspection
for information on inspecting and cleaning fiber connectors.
6.1 Optical Power Meter (OPM) Test Procedure
The FX120 is designed for use at the customer premises to aid with ONT/ONU activation and troubleshooting
The FX120 is connected at the customer premise
1. Power up the FX120 test set. Testing should start automatically. Starting/stopping/restarting measurements from the OPM menu (see OLT
Information Table) starts/stops/resets items in the OPM Summary screen - the power level graphs and the Active ONU list in Advanced Mode. To
clear the PLOAM list, go to the respective PLOAM menu and press the clear button.
2. Tap on Setup and configure the test profile settings according to the xPON class and ITU-T Test standards.
GPON OPM Setup menu
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XGS-PON OPM Setup menu
3. Inspect and clean the FX120 test ports. Inspect and clean the fiber patch cord from the OLT and insert it into the FX120 OLT test port.
Warning: Never look directly into the beam of an active optical source as this may result in harmful
eye damage from radiation exposure
4. If 1490/1577nm light is detected, the 1490/1577nm Status will display OK. Verify that the measured 1490/1577nm signal level is green (see Signal
and Synchronization Status). Confirm TC-Sync DS displays OK UL/DL. Consult VeEX technical support if you are not able to achieve TC-Sync.
5. All DS LEDs should turn from red to Green. If any LED remains red, clean and inspect the connectors again as specified in Step 4.
6. Inspect and clean the patch cord connectors that will connect FX120 to ONU/ONT and the ONU/ONT test port.
7. Connect the FX120 to the ONU/ONT test port. If 1310/1270nm light is detected, the Status will display OK. Verify that the measured 1310/1270nm
signal level is green (see Signal and Synchronization Status ).
8. Confirm TC-Sync DS displays OK UL/DL. Consult VeEX technical support if you are not able to achieve TC-Sync.
9. All US LEDs should turn from red to green. If any LED remains red, clean the ONU connections again as outlined in Step 6.
Thresholds Adhering to the Current GPON Standards
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Thresholds Adhering to the Current XGS-PON Standards
For latest revisions of GPON standards, please visit https://www.itu.int/rec/T-REC-G.984.2-201908-I
and for XGS-PON standards, please visit https://www.itu.int/rec/T-REC-G.9807.1/en
Synchronizing the FX120 with the ONU Activation Process
The FX120 will synchronize to the downstream frame (from the OLT) provided the OLT is operational and 1490/1577nm signal level is good. The
downstream frame synchronization indicator should occur almost immediately.
In order to synchronize with the ONU, the FX120 needs to see the ONU registration process. Therefore, only connect the ONU AFTER the FX120
application is already running. Otherwise, power cycle the ONU after the FX120 application is running if the ONU is already connected to the FX120.
If the OLT and an active ONU are connected to the FX120 before starting the test application, the
FX120 will not see the ONU activation and the above process will not be completed. In this instance,
LOF will be reported for the upstream side; no ONU ID or ONU S/N information on the OPM results
page will be displayed.
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6.2 Histogram and OLT Loss History
Tap on 1490/1577nm Histogram, 1310/1270nm Histogram, and ODN (Span Loss) Histogram tabs to Monitor Downstream and Upstream signals. Tap on t
he upper left and right arrows to scroll through the measurement period. The + and – keys zoom in/out of the time axis.
1310nm Histogram showing Downstream signals
1490nm Histogram showing Downstream signals
OLT Loss Histogram showing Downstream and Upstream signals
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7.0 Advanced Mode
Advanced Mode features advanced troubleshooting tests beyond basic signal level measurements. Further investigation may be
required when the OPM test mode indicates good signal level and TCSync is good but network is generating alarm or errors.
Advanced Results provides a summary screen of network status and reports system errors/alarms status.
PLOAM captures and decodes PLOAM messages exchanged between the Optical Line Terminal (OLT) and ONT.
Active ONU lists all active ONUs currently on the network as determined by the OLT.
Starting/stopping/restarting measurements from Advanced Results starts/stops/resets items in Advanced Mode, namely the power
level graphs. Start/stop from Advanced Setup relates to error/alarms on this page. If the ONU is restarted, the power measurement
will continue recording the signal levels. The decoded fields will be reset when the ONU is reconnected. Decoded messages
continue to persist until the new sync is achieved, when they get updated.
Pressing restart at any time clears the results, filling in the downstream decode after receiving the first
PON-ID downstream message. The upstream decode will be filled in when the ONU initializes.
Advanced home menu
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