Komshine QX55 Series User manual

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Master OTDR
OTDR · OPM · SLS · VFL · FIP · RJ45
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QX55-S & QX55-P

Preorder
All trademarks and names mentioned in this document belong to Komshine Technologies
Limited(Komshine). The contents of this document are subject to change without notice.
Information from Komshine is supposed to be true and reliable. Komshine will not take
any responsibility for the errors contained in this document or the accidental or secondary
losses caused by the supply and use of this document or the practicality of the version of
the document.
Safety instructions
When using the product, you must pay attention to the following safety measures. Failure
to adopt these safe operation methods or follow the specific warnings described elsewhere
in this manual will violate the safety standards of product design, manufacture and use.
Our company will not take any responsibility for the consequences caused by customers'
violation of these requirements.
1. Working environment
The maximum relative humidity is 95% and the ambient temperature is -10~50℃.
Before turning on the power supply, make sure that the product is set to the matching
power supply voltage, that appropriate insurance is installed, and that all safety measures
are taken.
2. Do not operate in an explosive environment.
Do not use this product in the presence of flammable gas or smoke.
3. Do not remove the protective jacket of the instrument.
User must not remove the instrument cover or replace the internal components. If neces-
sary, please contact our maintenance personnel.
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Safety terms in this manual
Warning items
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A warning symbol indicates danger. It prompts the user to pay
attention to a certain process, an operation method or the like.
Failure to operate correctly or follow the rules may cause per-
sonal injury. Do not proceed to the next step until you fully
understand and meet the pointed warning conditions.
A caution symbol indicates danger. It draws the user's attention
to a certain process, this operation method or the like. If you
can't operate correctly or follow the rules, the instrument may
be partially or completely damaged or destroyed. Don't continue
to the next step until you understand and meet the pointed cau-
tion conditions safely.
The symbol gives information that is helpful for the use and
maintenance of the instrument.
Optical Time-Domain Reflectometer (OTDR) is a laser device, so users should
always avoid looking directly at the laser output port. Users can't observe the
output port of the light source with a microscope, magnifying glass and other
equipment. The energy of the laser beam gathers on the retina, which will
cause permanent damage to the eyes.
●When measuring optical fiber with OTDR, there must be no working light in
the measured optical fiber (except PON function). Otherwise, the measure-
ment results will be inaccurate.
●When measuring optical fiber with OTDR, the optical interface must ensure
good contact. Otherwise, the measurement results will be inaccurate.

Matters that need attention
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Battery:
The power supply battery of OTDR of Komshine is rechargeable li-polymer. If you
don't use the instrument for a long time, please charge the battery before using it. If
the instrument is idle for more than 2 months, you should charge it in time to keep the
battery power. Do not charge the battery for more than 8 hours; Do not remove the
battery without permission; Please keep the battery away from the fire source and
strong heat; Do not open or damage the battery; Do not touch the electrolyte of the
battery, so as not to hurt your eyes and corrode your skin and clothes.
External power supply:
OTDR supports external power supply, and the power supply requirement is
DC12V/2.5A
Attention to laser radiation:
During the measurement of the optical fiber system, attention should be paid to avoid
the eyes facing the open-circuit optical fiber, optical fiber interface, optical fiber con-
nection point and other light sources, or the eyes will contact the transmitting laser
and be hurt.
1. When the optical time domain reflectometer works, don't look directly at the laser
output port;
2. After using the optical time domain reflectometer, please cover the dust cap of the
optical port;
3. Do not look directly at the unconnected end of the optical fiber under test. If possi-
ble, point the unconnected end of the optical fiber to a non-reflective object.

Content
Preorder.....................................................................................................
Safety instruction..........................................................................................
Safety terms in this manual.............................................................................
Warning items...............................................................................................
Matters need attention....................................................................................
I. Overview.................................................................................................
1. Contents of this manual..............................................................................
2. Unpacking inspection of products ..............................................................
3. Product introduction..................................................................................
4. Principle introduction.................................................................................
5. Features of this product..............................................................................
II. the basic operation...............................................................................
1. Description of instrument function interface.................................................
2. Description of instrument keys...................................................................
3. Battery and charging.................................................................................
4. Operate VFL function ............................................................................
5. Operate OPM function...............................................................................
6. Operate SLS function................................................................................
7. Operate FIP function.................................................................................
8. Operate RJ45 functions.............................................................................
9. Document management.............................................................................
10. System settings........................................................................................
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7
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25
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III. Introduction of OTDR functions........................................................
1. Test information of curve interface............................................................
2. Link map page........................................................................................
3. Setup page.............................................................................................
4. Wavelength switching..............................................................................
5. PON function introduction.......................................................................
Enclosure..................................................................................................
A. Event type description ...........................................................................
B. Maintenance and calibration instructions...................................................
C. Warranty terms......................................................................................
D. Technical index information of OTDR......................................................
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I. Overview
enabling today,inspiring tomorrow
1. Contents of this manual
First of all, thank you for choosing our products. Please read this manual carefully before
using it, especially the warning and attention information, so as to avoid injury to your
body or instrument due to wrong operation.This manual mainly contains the common oper-
ation and maintenance information of the instrument, as well as troubleshooting guide and
various information about obtaining technology and service.All the instruments have gone
through strict inspection and quality control process before leaving the factory.
2. Unpacking inspection of products
This product is packed and consigned according to the standard assembly and shipping
procedures. When receiving the instrument, please check the product list according to the
packing list and check the appearance quality of the product, and find out the possible
physical damage of the product in the process of shipping.In case of packaging damage,
please keep the original packaging materials and immediately inform the freight company
and the supplier agent of the product to solve the problem properly.In the product packag-
ing, along with the instrument, there should also be some attached articles and related man-
uals. Please refer to the packing list for details. If you find that the materials in the box are
not complete, please contact the agent responsible for your supply to solve the problem. If
necessary, you can also contact us directly by email.
3. Product introduction
Our OTDR is a reliable instrument for measuring optical fiber characteristics.This series
of products are small, light and easy to operate. It adopts ergonomic shape design and
high-definition LCD screen, and has a data storage function. These data can be analyzed
by PC software, and the optical fiber transmission quality can be analyzed, and the
post-processing, archiving and printing of measurement results can be realized.In particu-
lar, you can see the characteristics of the optical fiber link and the distribution of the opti-
cal fiber through the measurement of the optical fiber link and the image characteris-
tics.You can use it to periodically check whether the link meets the specifications.In order

Pulse generator E/O
O/E
Enlarge
signal
processing
Master clock monitor
Optical directional
coupler
Connector Optical fiber
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to record the optical fiber transmission quality, it is necessary to measure the optical path,
total loss, loss of all joints and connectors.By looking at the "event points" in the optical
fiber, the installation and maintenance personnel point out these irregularities in the optical
fiber, locate their positions, and measure the attenuation between them, as well as the
resulting loss and attenuation uniformity.In a word, OTDR is a necessary tool for the pro-
duction, installation and maintenance of optical fiber and optical cable.
4. Principle introduction
OTDR uses its laser light source to send a beam of optical pulse to the measured optical
fiber. The optical signal reflected back to the OTDR will be reflected on the optical fiber
itself and each characteristic point. The reflected optical signal is coupled to the OTDR
receiver through directional coupling, and converted into an electrical signal here. Then,
through a series of signal processing means, the situation of the whole optical fiber link is
displayed.As shown in the figure below:

5. Features of the product:
1) Basic functions of OTDR:
a.Measure the length of optical cable and optical fiber;
b.Determine the location of optical cable and optical fiber fault point and breakpoint;
c.Describe the loss distribution curve of optical cable and optical fiber;
d.The attenuation coefficient of optical cable and optical fiber is measured;
e.Measure the loss between optical cable and optical fiber;
f.Measure the insertion loss of optical cable and optical fiber connector;
g.Measure the reflection intensity of optical fiber and optical fiber reflection events;
h.The link map shows the status of the fiber link.
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Trace Display Window_Menu List
open files
OTDR Settings
save files
Horizontal magnifying curve
Horizontal narrowing curve
Vertical magnification curve
Vertical narrowing curve
Curve 1:1
Choose the previous event
Choose the next incident
Battery level indicator
Select a function with up and down navigation keys,
press the [ENTER] key to enter the operating interface
Type Distance
(km) Loss (dB) Ref. (dB) Att. (dB/km)
S
1/5
2/5
0.00
2.58
5.01
0.073
3.104
-34.657
-31.349
0.311
0.317
0.303
12 3 54
A: 0km/0.0dB
B:17.5km/0.035
500ns 1550nm 15sAuto-mode
35.00km

b. SLS function: This function supports two kinds of light sources of 1310/1550nm
and multiple modulation modes.
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No looking at the port !
No looking at the port !
Hz
CW
1310nm
1000
2) Other incidental functions:
a. VFL function: 650 ± 20nm light source is used for this function, and visual light source is
provided for optical fiber fault location by means of visualization, the visible light source emits
red light visible to human eyes, which can be detected in the blind area of optical fiber test
direct fault (breakpoint) location, and can also be used for core comparison in multi-core opti-
cal cable. Support Two working modes: constant light and 2Hz flashing.