Pro OCC-CWDM-301-18B User manual

OCC-CWDM-301-18
SERIES
Optical Channel Checker
Operation Guide

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OCC-CWDM-301-18
Notices
No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval
or translation into another language) without prior agreement and written consent of the Provider, as governed by
international copyright laws.
Warranty
The material contained in this document is subject to change without notice. The Provider makes no warranty of
any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and
fitness for a particular purpose. The Provider shall not be liable for errors contained herein or for incidental or
consequential damages in connection with furnishing, performance, or use of this material.
The battery is a consumable part and is not subject to the OTDR warranty.
ISO9001 Certification
Produced to ISO9001 International Quality System Standard as part of the Provider, objective of continually
increasing customer satisfaction through improved process control.
Safety Instructions
During each stage of operation of this instrument, please always observe the following safety instructions. Not
taking any safety precautions or following the instructions will violate the safety standards of design,
manufacturing and application of these instruments. In no case will the Provider bear the responsibilities for
consequences incurred by violation of the following instructions.
GENERAL
This product is a Safety Class 3 instrument. The protective features of this product may be impaired if it is used in
a manner not specified in the operation instrument.
Environmental conditions
It is designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to
the specifications tables.
Before applying power
Verify that the product is set to match the available line voltage, the correct fuse is installed, and all safety
precautions are taken. Note the instrument’s external markings described under Symbols.
Do not operate in an explosive atmosphere
Do not operate the instrument in the presence of flammable gases or fumes.
Do not remove the instrument cover
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must
be made only by qualified service personnel.
Instrument that appears damaged or defective should be made inoperative and secured against unintended
operation until they can be repaired by qualified service personnel.

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OCC-CWDM-301-18
Safety Terms Used in This Manual
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not
correctly performed or adhered to, could result in personnel injury. Do not proceed beyond a WARNING sign
until the indicated conditions are fully understood and met.
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not
correctly performed or adhered to, could result in damage to or destruction of part or the entire product. Do not
proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.
The NOTE sign information that may be beneficial during the use and maintenance of the instrument.
Warning
•OTDR is a laser instrument. Users should avoid looking directly into the optic output. And the use of
microscope or magnifier should also be avoided, for the use of such devices can focus a highly intense
beam onto the retina, which may result in permanent eye damage
•Make sure that the optical fiber or cable is not in use and there is no laser beam in the fiber before testing
via OTDR. Otherwise, it may result in imprecise test trace, even permanent damage for the OTDR
Caution
Battery: Battery for this instrument is rechargeable NiMH battery. If unused for a long time, battery should be
recharged before being used. If the instrument is left idle for more than two months, it should be recharged to
maintain adequate battery volume. Do not recharge batteries for more than 8 hours. Do not take batteries out
without technical staff’s help. Do not expose batteries to fire or intense heat. Do not open or mutilate batteries.
Avoid touching the electrolyte in the batteries, which is corrosive and may cause injuries to eyes, skin or damage
to clothes.
External Power: The OLT-CC-18-301 Series supports external power. Power requirements: DC 13.8V/1.2A..
Laser Radiation: To avoid serious eye injury, never look directly into the optical outputs of fiber optic network
equipment, test equipment, patch cords, or test jumpers.
•Always avoid looking directly into the optical output port, when the instrument is working
•Always replace protective dust cap on the detector port when the instrument is not being used
•Always avoid looking directly at unconnected end of optic fiber in testing and make the unconnected end
pointing at a non-reflective object, if possible

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OCC-CWDM-301-18
Table of Contents
1. General Information ............................................................................................................................................6
1.1 Scope of this Manual........................................................................................................................................6
1.2 Unpacking and Inspection................................................................................................................................6
1.3 Introduction......................................................................................................................................................6
2. Basic Operation ....................................................................................................................................................8
2.1 Foreword ..........................................................................................................................................................8
2.2 Instrument Interfaces Instructions....................................................................................................................8
2.3 Use of Batteries ................................................................................................................................................9
2.4 Keypad Functions...........................................................................................................................................10
3. Basic Information of OTDR..............................................................................................................................11
3.1 Principle of OTDR .........................................................................................................................................11
3.2 Basic Definition and Classification of Events................................................................................................11
3.2.1 Events......................................................................................................................................................11
3.3 Measurement Application of OTDR ..............................................................................................................13
3.3.1 Measurement Contents of OTDR............................................................................................................13
3.3.2 Trace Analysis of OTDR.........................................................................................................................13
3.4 Trace Display Screen of OTDR......................................................................................................................13
3.4.1 Trace Display of OTDR ..........................................................................................................................14
3.4.2 Information Window of OTDR...............................................................................................................14
3.4.3 Menu Bar and Window of OTDR...........................................................................................................17
3.5 Battery Recharge Status .................................................................................................................................32
4. Trace Measurement and Processing of Existing Traces.................................................................................33
4.1 Instructions on GUI........................................................................................................................................33
4.2 Trace Measurement of OTDR........................................................................................................................34
4.2.1 Trace Measurement- Connect Optical Fiber............................................................................................34
4.2.2 Trace Measurement - Parameter Configuration ......................................................................................34
4.2.3 Trace Measurement- Auto.......................................................................................................................35
4.2.4 Trace Measurement - Manual..................................................................................................................36
4.2.5 Trace Measurement -Reasons of Measurement Failures.........................................................................36
4.3 Information Window......................................................................................................................................37

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OCC-CWDM-301-18
4.3.1 Switch between Information Window Items...........................................................................................37
4.3.2 Review Event List ...................................................................................................................................37
4.3.3 Review Marker A/B Information ............................................................................................................37
4.4 Zoom in Trace Horizontally...........................................................................................................................37
4.5 Zoom out Trace Horizontally.........................................................................................................................38
4.6 Zoom in Trace Vertically ...............................................................................................................................38
4.7 Zoom out Trace Vertically .............................................................................................................................38
4.8 Re-analyze the trace .......................................................................................................................................38
4.9 Save Trace......................................................................................................................................................39
4.10 Browse Saved Traces ...................................................................................................................................40
4.11 Upload Saved Traces....................................................................................................................................40
4.12 Alter Measurement in Realtime Testing.......................................................................................................41
5. Maintenance and Calibration............................................................................................................................42
5.1 Maintenance and Replacing of Batteries........................................................................................................42
5.2 Cleaning of Interfaces.....................................................................................................................................42
5.3 Calibration Requirements...............................................................................................................................43
6. Warranty Information.......................................................................................................................................44

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OCC-CWDM-301-18
1. General Information
1.1 Scope of this Manual
Thank you for your purchase from Precision Rated Optics. Please read this manual carefully before use. Always
observe the warnings and cautions appearing throughout this manual.
This manual contains the information necessary for proper operation and maintenance of your equipment,
troubleshooting instructions as well as information regarding obtaining services.
This instrument is carefully assembled and undergo a rigorous mechanical, electrical, and optical inspection prior
to shipment. Beside the instrument, the package should also include a data transfer cable, a power adapter, a PC
Analysis software installation disk and this users’ manual etc. For detailed information, refer to the packing list
Upon receiving the instrument, please check for any obvious signs of physical damage that may have occurred
during shipment. Report any damage to the shipping agent or the representative of the Provider immediately.
Retain the original packing materials in case reshipment becomes necessary.
1.2 Unpacking and Inspection
This instrument has been carefully packed in accordance with standard shipping procedures. Examine the
instrument for damage that may have occurred during shipment. If you find any damage or the instrument is not
working, or if any of the following items are not included, please contact your representative of the Provider.
1.3 Introduction
The OCC-CWDM-301-18 Series Handheld CWDM Optical Channel Checker is specially designed for CWDM
installation, maintenance and troubleshooting, which is able to measure and monitor power values of up to 18
CWDM channels. The OCC-CWDM-301-18 Series can replace high-cost Spectrometers and conduct quick and
reliable measurements in all environments. Thanks for its light, compact and sturdy design, the OCC-CWDM-
301-18 Series is the ideal tool for CWDM installation and maintenance technicians.
Features:
Basic applications:
•Clear TFT LCD display (320×240)
•18-channel measurement: Model OCC-CWDM-301-18B, 1271-1611nm
•8-channel measurement: Model OCC-CWDM-301-18A, 1471-1611nm
•Result display in histogram and list
•Applicable to normal optical power measurement
•Internal clock & fiber S/N editable
•User definable threshold setting
•Data Transfer to PC via USB
•No warm-up, quick start

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OCC-CWDM-301-18
•Backlight
•10 hours continuous operation
•Pocketsize, lightweight and easy-to-use
•CE, FCC certificates
Result display in histogram and list
Straightforward result display for easy understanding.
Internal clock & fiber S/N editable
Internal clock enables OCC-50 to save test data with time and editable fiber SN information for convenient
archiving and editing.

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OCC-CWDM-301-18
2. Basic Operation
2.1 Foreword
This part introduces the basic operation on the OTDR. Specific operations of each type instrument are elaborated
in Chapter 3 of this manual. Please read this manual carefully for optimal operation. Should you encounter any
problems during operation, you are welcome to contact the technical staff of our company or representatives.
2.2 Instrument Interfaces Instructions
Figure 2-1. Coping of OTDR
AC Power Jack
Power adapter jack requirements: 13.8V [email protected].
Data Transfer Port
For all types, there are USB interface and RS232 interface. This interface is used to transfer saved traces in the
instrument to a PC for further analysis by associated trace manager.
Power/Charge Indicator
When measurement power on or charging, the relevant indicator will be lightened.
Caution
Invisible laser radiation
Please always avoid looking directly at the optical output or stare at laser beam.

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OCC-CWDM-301-18
2.3 Use of Batteries
Battery for OTDR is NiMH battery.
Cautions during Operation:
The following may bring auto power off of the instrument:
•The instrument will be auto power off when there is insufficient power during operation and low power
will be shown on the LCD.
•If unused for a long time and cause insufficient power, the instrument will be power off several seconds
after powering on so as to protect the batteries in case of excessive discharging. The inside batteries
should be recharged immediately through adapter.
•Please charge only when battery remaining capacity is low or adapter should be unplugged. Irregular
charging operation may seriously shorten battery life.
Cautions in Recharge:
•Quick charge is needed first and then switch to trickle charge after the voltage reaches a predefined
Figure. Quick charge temperature is +5~+45℃, and trickle charge temperature is 0~+55℃, suitable for
indoors. Battery will not be full or be damaged if the charging temperature is beyond the above range,
which may shorten batter life.
•3 hours for quick charge;
•Do not charge for over 8 hours

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OCC-CWDM-301-18
2.4 Keypad Functions
[On/Off] Power on or off
Under GUI, Press to start measurement. While testing, press this key to stop
measurement
Enter Under GUI, press this key to confirm the current operation
Together with [Shift/ ], can browse the event list downwards
▲ ▼
Move menu bar in menu operation
Highlight the icon to be operated
Adjust parameter in parameter configuration
Together with [Shift/ ], can zoom out or zoom in trace vertically
◄►
Select parameter to be adjusted in parameter configuration
Move marker leftwards or rightwards in Trace operation
Turn page while in Help sub-menu
Together with [Shift/ ], can zoom out or zoom in trace horizontally
Read help when power on
Cancel the current operation
Exit menu configuration
Switch between information Windows
Together with [Shift/ ], can review the event list upwards
[Shift/ ] This is the hot key to active the integration function by being pressed together with
other keys. Besides, by pressing this key singly under the GUI of displaying trace, the
trace can be resumed to the original size without any zoom