PROLITE-50/51/52
OPTICAL REFLECTOMETER (OTDR)
- 0 MI2119 -
SAFETY NOTES
Read the user’s manual before using the equipment, mainly SAFETY RULES
paragraph.
The symbol
on the equipment means SEE USER’S MANUAL. In this manual may
also appear as a Caution or Warning symbol.
WARNING AND CAUTION statements may appear in this manual to avoid injury
hazard or damage to this product or other property.
USER’S MANUAL VERSION
Version Date Software Version
1.1 July 2016 v6.08
SAFETY RULES
* The safety could not be assured if the instructions for use are not closely
followed.
* This is a class I equipment, for safety reasons plug it to a supply line with the
corresponding ground terminal.
* When using some of the following accessories use only the specified ones to
ensure safety.
Mains power supply AL-005.
Clock Battery.
* Observe all specified rating both of supply and measurement.
* Remember that voltages higher than 70 V DC or 33 V AC rms are dangerous.
* Use this instrument under the specified environmental conditions.
* The user is only authorised to carry out the following maintenance operations:
Any other change on the equipment should be carried out by qualified
personnel.
* Follow the cleaning instructions described in the Maintenance paragraph.
Specific precautions
CLASS 1
LASER PRODUCT
CAUTION
It is recommended do not watch directly the laser beam.
The use of devices that are not the specified ones in this
manual as well as internal manipulation of the equipment
can be cause of dangerous radiation.
CAUTION
The battery used can present danger of fire or chemical burn
if it is severely mistreat. Do not disassembly, cremate or heat
the battery above 100 °C under no circumstances.
* Symbols related with safety:
Descriptive Examples of Over-Voltage Categories
Cat I Low voltage installations isolated from the mains.
Cat II Portable domestic installations.
Cat III Fixed domestic installations.
Cat IV Industrial installations.
TABLE OF CONTENTS
1 GENERAL..................................................................................................1-1
1.1 Introduction .......................................................................................1-1
2 DESCRIPTION OF CONTROLS ELEMENTS.......................................................2-3
2.1 Patch panel........................................................................................2-3
2.2 Keypad Functions................................................................................2-4
3 BASIC INFORMATION OF PROLITE-50/51/52..................................................3-6
3.1 Principle of PROLITE-50/51/52..............................................................3-6
3.2 Basic definition and classification of events .............................................3-6
3.2.1 Events......................................................................................3-6
3.3 Measurement Application of PROLITE-50/51/52.......................................3-8
3.3.1 Measurement Contents of PROLITE-50/51/52.................................3-8
3.3.2 Trace Analysis of PROLITE-50/51/52.............................................3-8
3.4 Trace Display Screen of PROLITE-50/51/52.............................................3-9
3.4.1 Trace Display of PROLITE-50/51/52..............................................3-9
3.4.2 Information Window of PROLITE-50/51/52................................... 3-10
4 TRACE MEASUREMENT PROCESS................................................................ 4-13
4.1 Instructions on Graphic User Interface (GUI) ........................................4-13
4.1.1 Menu Bar of PROLITE-50/51/52 .................................................4-14
4.1.2 Battery Recharge Status ........................................................... 4-15
4.2 Trace Measurement........................................................................... 4-15
4.2.1 Parameter Configuration on PROLITE-50/51/52 on Menu Bar..........4-16
4.2.2 Trace Measurement - Auto ........................................................ 4-36
4.2.3 Trace Measurement - Manual..................................................... 4-37
4.2.4 Trace Measurement – Reasons of Measurment Failures.................. 4-38
4.3 Information Window.......................................................................... 4-38
4.3.1 Switch between Information Window Items .................................4-38
4.3.2 Review Event List.....................................................................4-38
4.3.3 Cursors...................................................................................4-39
4.4 Increasing and decreasing of the trace visualization ............................... 4-39
4.5 Save Trace.......................................................................................4-40
4.5.1 Browse Saved Traces................................................................ 4-41
4.5.2 Upload Saved Traces ................................................................ 4-42
5 SPECIFICATIONS .....................................................................................5-43
6 MAINTENANCE ...................................................................................6-45
6.1 Instructions for returning by mail ........................................................ 6-45
6.2 Maintenance of Batteries.................................................................... 6-45
6.3 Cleaning of Interfaces........................................................................6-46
6.4 Calibration Requeriments ................................................................... 6-48
6.5 Clearing Recommendations ................................................................ 6-48
1-1 July 2016
OPTICAL REFLECTOMETER (OTDR)
PROLITE-50/51/52
1 GENERAL
1.1 Introduction
PROLITE-50/51/52 are the preferred choice for the measurement of optical
fiber’s specifications. With PROLITE-50/51/52, you can make assessment of
one single optical fiber or a whole optical fibre chain. Especially, you can directly
observe loss and events distribution of optical fibre chain.
PROLITE-50/51/52 check the transmission quality of optic fibre through
measurement of backward scattered lights. Standard organizations like
International Telecom Union (ITU) define backward scattered lights as effect ive
analysis means of measurement of optical fibre lo ss. Backward scattering is also
the only effective way of connector inspection, which can be applied to measure
the length of optical fibre, too. Therefore, PROLITE-50/51/52 is a useful tool
for optical fibre manufacturing, installation and maintenance.
Therefore, the PROLITE-50/51/52 is a very useful tool for the optical fibre
manufacturing, installation and maintenance.
PROLITE-50/51/52 works through reviewing “events” in optical fibre (for
example, irregularities and connectors), which is quite helpfu l for quality control
for those who are in charge of optical fibre manufacturing, installation and
maintenance. PROLITE-50/51/52 can help identify the irregularities in optical
fibre, locate them, and measure their attenuation, relevant loss and their
homogeneity.
PROLITE-50/51/52 is more helpful for field operation. It can help to check the
qualification of optical fibre chain circuit on a regular basis. For the purpose of
future maintenance, transmission quality and condition of optical fibre need to
be recorded and stored, which includes measurement of optical path, total loss,
and loss of all tie-ins and connectors.
Besides, PROLITE-50/51/52 is easy to use, small and compact. According to
the ergonomics, they are designed to fully embody the user's convenience with
its large LCD display and graphical interface. They can save and transfer the
measurement curves data to a PC by the provided software for further analysing,
reporting and printing.
PROLITE-50/51/52 basic applications:
• Measure the length of optical fibre and cable.
• Measure the distance between two points on optical fibre and cable.
• Locate faults and ruptures of optical fibre and cable.
• Display distribution curve of optical fibre and cable loss.
• Measure attenuation coefficient of optical fibre and cable.
• Measure loss between two points on optical fibre and cable.
• Measure loss of tie-ins.
• Measure reflection of reflection events of optical fibre and cable.
For a specific event (transmission quality changed due to faults caused by
welding, connector, bending etc.), the following measurements can be carried
out with PROLITE-50/51/52:
• For each event: distance, loss and reflection;
• For each section of optical fibre: length and loss of dB or dB/Km;
• For the whole optical fibre chain: length and loss of dB;
PROLITE-50/51/52 features by:
• Large Colorful LCD display with auto or manual adjustment of
contrast.
• Backlight LCD display supports night operation.
• Easy operation with trace graphic display.
• Trace storage function.
• USB Data upload port.
• PC analysis software-Trace Manager for analysing and reporting
previously stored data.
• Auto off function conserving battery life.
• DC/AC power supply.
• Auto recharging, over 8 hours operation for one charge.
July 2016 1-2
2 DESCRIPTION OF CONTROLS ELEMENTS
2.1 Patch panel
Figure 1.- Patch panel.
Power on and charge indicators.
Connector for AC power supply adapter.
Interface of connexion: USB interface in order to connect the
equipment to a PC. It allows transferring the traces stored to the PC to be
analysed later.
Optical fibre connector:
Connector
SC/APC
and
VLS
(only
PROLITE-52
)
used as optical interface.
CAUTION
Invisible laser radiation
Please always avoid looking directly at the optical output or stare at
laser beam.
2-3 July 2016
2.2 Keypad Functions
Figure 2.- Operation Interface of PROLITE-50/51/52.
On / Off for system.
Main functions:
They allow moving within the different menus as well as to
increase/decrease the value of configuration parameters.
Pressing [
] previously in the visualisation display of trace, allows to
increase/decrease vertically the size of the trace.
Main functions:
They allow moving within the different menus as well as to move the
cursors horizontally throughout the plan.
Pressing [
] previously in the visualisation display of trace, allows to
increase/decrease horizontally the size of the trace.
July 2016 2-4
Pressing it previously allows executing the secondary functions. Also
it serves to cancel the zoom in / zoom out actions for trace visualisation,
which has been done.
Main functions:
This key allows going forward through pages from Help, cancelling the
selected operation, exiting from configuration menu and changing
between information windows from visualised trace.
Press [
] to review the previous trace events.
Key to start/stop the measurement process.
Press this key to confirm the operation selected.
Press [
] to review the later trace events.
2-5 July 2016
3 BASIC INFORMATION OF PROLITE-50/51/52
3.1 Principle of PROLITE-50/51/52
OTDR is a measurement instrument for identifying optic fiber transmission
features. The instrument is mainly used to measure attenuation of a whole optic
fiber chain and provide attenuation details relating to length, namely detect,
locate and measure any event in optic fiber chain (events re fer to faults caused
by welding, connectors, and bending whose transmission change can be
measured). Its non-destructive, one-end connection, and rapid measurement
has made the PROLITE-50/51/52 an indispensable tool for manufacture,
construction, and maintenance of optic fiber.
The faults and heterogeneity of optic fiber it self cause Rayleigh scattering of
light pulse transmitted in optic fiber. Part of light pulse is scattered in the
reverse direction, and this is called Rayleigh backward scattering, which actually
provides attenuation details relating to length.
Information relating to distance is obtained through time information (tha t’s the
reason why there is “time Domain” in the name of OTDR). Fresnel reflection
occurs at the boundary between two media of different IOR (for example,
connections of faults, connectors, or optic fiber end). This reflection is used to
locate the discontinuous points on optic fiber. The magnitude of reflection
depends on the difference between IOR and the smoothness of boundary.
PROLITE-50/51/52 sends out a light pulse into connected optic fiber, and
receive reflections of events and backward scattering power of pulse in time.
Locus will be displayed on LCD. The y-axis is dB value of backward scattering
power, and the x-axis is the distance.
3.2 Basic definition and classification of events
3.2.1
Events
Events refer to any abnormal points causing attenuation or sudden change of
scattering power besides the normal scattering of optic fiber, which include all
kinds of losses like bending, connections and ruptures. Events points displayed
on LCD are abnormal points that cause traces to deviate from straight line.
Events can be classified as reflection events and non-reflection events.
July 2016 3-6
Reflection Events
When some pulse energy is scattered, reflection events happen. When reflection
event occurs, peak shows on trace, as shown in figure 3.
Figure 3.- Reflection Event.
Non-reflection Events
Non-reflection events happen at certain points where there is some optic loss but
no light scattering. When non-reflection event occurs, a power decline shows on
trace, as shown in figure 4.
Figure 4.- Non-reflection Event.
3-7 July 2016
Inspection Event
PROLITE-50/51/52 sends off a light pulse into the optic fiber to be
inspected, and then receive returning light signals, and starts calculating the
“event” distance. The farther the distance is, the longer time need for scattered
light to be received by the instrument. Event distance can be calculated
according to the time of receiving events signals.
Through inspection of scattered signals, properties of optic fiber, connectors,
tie-ins can be identified.
3.3 Measurement Application of PROLITE-50/51/52
PROLITE-50/51/52 displays power relating to distance of returning signals.
This information can be used to identify the main properties of an optic fiber
chain.
3.3.1
Measurement Contents of PROLITE-50/51/52
• Event location (distance), end or rupture of optic fiber chain.
• Attenuation coefficient of fiber.
• Loss of a single event (for example, one optic tie-in), or total loss from upper
end to end.
• Range of a single event like reflection of connectors (or grade of reflection).
• Auto measurement of cumulative loss of a single event.
3.3.2
Trace Analysis of PROLITE-50/51/52
The trace analysis of PROLITE-50/51/52 is fully automatic. The trace locates:
• Reflection events of connections and mechanic tie-ins.
• Non-reflection events (usually at welding tie-ins).
• End of optic fiber (Through scanning the first loss event that is larger than
end threshold, end of optic fiber can be identified).
• Events list: event type, loss, reflection and distance.
July 2016 3-8
3.4 Trace Display Screen of PROLITE-50/51/52
Trace displays on PROLITE-50/51/52 screen, as shown in figure 5.
Figure 5.- Trace Display Screen
3.4.1
Trace Display of PROLITE-50/51/52
This window displays the trace after one measurement.
Definition of Trace: After one measurement, reflection power diagram will be
displayed as distance function. This diagram is referred to as trace.
Trace of PROLITE-50/51/52 displays measurement result in a graphic form.
The y-axis stands for power, and the x-axis stands for distance, as shown in
figure 6.
Figure 6.- Traces and Coordinates
3-9 July 2016
3.4.2
Information Window of PROLITE-50/51/52
Contents of this window: measurement parameters, events list, marker A/B and
analysis parameters.
Measurement Trace Parameters
Important measurement and analysis parameters always display in the
information window, as shown in figure 7 and 8:
Figure 7.- Measurement Trace Parameters
Figure 8.- Analysis Trace Parameters
For definitions and configurations of items in figure 7 (Avg. time, Range, IOR,
wave length and pulse width), refer to parameter configuration.
For definitions of items in figure 8 (date, reflection threshold, non-reflection
threshold, end threshold, scattering coefficient), please refer to parameter
configuration.
July 2016 3-10
Event List
To indicate the location of events inspected. Any defined post s will be displayed
in event list, for example, non-reflection event like welding points and reflection
event like connectors, as shown in figure 9.
Figure 9.- Events List
No: Event sequence No.
Four types
Fiber beginning; Reflection event Fiber end;
of events:
Attenuation event.
Loc.: Distance from beginning point to event.
Refl.: Magnitude of reflection.
Insl.: Loss of Inserted event.
Atn.: Attenuation characteristic from one event point to the current
event.
Cuml.: Cumulative loss, calculating from beginning point to the current
event.
3-11 July 2016
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