Harris OTM-20 Installation And Operation Handbook

Brand: Harris

Model: OTM-20

Type: Installation And Operation Handbook

ONE-YEAR LIMITED WARRANTY

Videotek, Inc. warrants that this product is free from defects in materials and workmanship for a period of one year from the date

of purchase. During this warranty period, Videotek will, at its option, repair or replace defective products at no charge for the

parts or labor. Batteries are not covered in the warranty.

For warranty service or repair, this product must be returned to a service facility designated by Videotek in the original packing or

its equivalent. The purchaser shall insure the product and prepay shipping charges to Videotek, and Videotek shall insure the

product and pay shipping charges to return the product to the purchaser.

The foregoing warranty shall not apply to defects or damage resulting from improper or inadequate maintenance by the

purchaser, connecting the product to incompatible equipment, misuses, operation outside any environmental specification for the

product, improper site preparation or maintenance, or attempts by personnel other than authorized Videotek representatives to

repair or service the product.

No other warranty is expressed or implied. Videotek specifically disclaims the implied warranties of merchantability and fitness for

a particular purpose. The remedies provided by the foregoing warranty are the purchaser's sole and exclusive remedies.

Videotek shall not be liable for any direct, indirect, special, incidental or consequential damages, whether based on contract, tort,

or otherwise.

Printed February 2007

Item #261345 Rev. A

Contents of this publication may not be reproduced in any form without permission of Videotek, Inc.

This instrument, in whole or in part, may be protected by one or more US or foreign patents or patent applications.

Specifications subject to change without notice.

___________________________________________________________________________________________________________

Videotek and the Videotek logo are registered trademarks of Videotek, Inc.

OTM-20

Optical Test Meter

Installation and Operation Handbook

OTM-20 Installation and Operation Handbook

VIDEOTEK SOFTWARE LICENSE AND WARRANTY

The software which accompanies this license (the "Software") is the property of Videotek or its licensors and is

protected by copyright law. While Videotek continues to own the Software, you will have certain rights to use the

Software after your acceptance of this license. Except as may be modified by a license addendum which accompanies

this license, your rights and obligations with respect to the use of this Software are as follows:

• You may not:

i. Sublicense, rent, or lease any portion of the Software; or

ii. Reverse engineer, decompile, disassemble, modify, translate, make any attempt to discover the source code

of the Software, or create derivative works from the Software

• Limited Warranty:

Videotek warrants that the media on which the Software is distributed will be free from defects for a period of sixty (60)

days from the date of delivery of the Software to you. Your sole remedy in the event of a breach of this warranty will be

that Videotek will replace any defective media returned to Videotek within the warranty period. Videotek does not

warrant that the Software will meet your requirements or that operation of the Software will be uninterrupted or that the

Software will be error-free.

THE ABOVE WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER EXPRESS OR

IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

PURPOSE AND NONINFRINGEMENT. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. YOU MAY HAVE

OTHER RIGHTS, WHICH VARY FROM STATE TO STATE.

• Disclaimer of Damages:

REGARDLESS OF WHETHER ANY REMEDY SET FORTH HEREIN FAILS OF ITS ESSENTIAL PURPOSE, IN NO

EVENT WILL VIDEOTEK BE LIABLE TO YOU FOR ANY SPECIAL, CONSEQUENTIAL, INDIRECT OR SIMILAR

DAMAGES, INCLUDING ANY LOST PROFITS OR LOST DATA ARISING OUT OF THE USE OR INABILITY TO USE

THE SOFTWARE EVEN IF VIDEOTEK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

SOME STATES DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR

CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS OR EXCLUSION MAY NOT APPLY TO YOU.

IN NO CASE SHALL VIDEOTEK LIABILITY EXCEED THE PURCHASE PRICE FOR THE SOFTWARE. This

disclaimer and limitations set forth above will apply regardless of whether you accept the Software.

• U.S. Government Restricted Rights:

RESTRICTED RIGHTS LEGEND. Use, duplication, or disclosure by the Government is subject to restrictions as set

forth in subparagraph © (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 252 227-7013

or subparagraphs © (1) and (2) of the Commercial Computer Software-Restricted Rights clause at 48 CFR 52.227-19,

as applicable, Videotek, Inc., 243 Shoemaker Road, Pottstown, PA 19464.

• General:

This agreement will be governed by the laws of the Commonwealth of Pennsylvania. This Agreement may only be

modified by a license addendum which accompanies this license or by a written document which has been signed by

both you and Videotek. Should you have any questions concerning this Agreement, or if you desire to contact Videotek

for any reason, please write:

Videotek, Inc.

243 Shoemaker Road

Pottstown, PA 19464-6433

OTM-20 Installation and Operation Handbook

OPERATOR'S SAFETY SUMMARY

CAUTION — these instructions are for use by qualified personnel only. To reduce

the risk of electric shock, do not perform this installation or any servicing unless you

are qualified to do so. Refer all servicing to qualified service personnel.

To ensure safety:

• The unit should not be exposed to dripping or splashing, and no objects filled with liquids, such as

vases, shall be placed on the unit.

• When the unit is to be permanently cabled, connect the protective ground conductor before making

any other connections.

• Operate built-in units only when they are properly fitted into the system.

• For permanently cabled units without built-in fuses, automatic switches, or similar protective facilities,

the AC supply line must be fitted with fuses rated to the units.

• Before switching on the unit, ensure that the operating voltage set at the unit matches the line

voltage, if appropriate. If a different operating voltage is to be set, use a fuse with the appropriate

rating. Refer to the Installation Instructions.

• Units of Protection Class I with an AC supply cable and plug that can be disconnected must be

operated only from a power socket with protective ground contact:

− Do not use an extension cable—it can render the protective ground connection ineffective.

− Do not intentionally interrupt the protective ground conductor.

− Do not break the protective ground conductor inside or outside the unit or loosen the protective

ground connection; such actions can cause the unit to become electrically hazardous.

• Before opening the unit, isolate it from the AC supply. Then ensure that:

− Adjustments, part replacements, maintenance, and repairs are carried out by qualified personnel

only.

− Safety regulations and rules are observed to prevent accidents.

− Only original parts are used to replace parts relevant to safety (for example, the power on/off

switches, power transformers, and fuses).

• Replaceable fuses can be hazardous when live. Before replacing a fuse, disconnect the AC power

source.

• Use caution when cleaning the equipment; isopropyl alcohol or similar solvents can damage or

remove the labels.

• Observe any additional safety instructions specified in this manual.

These symbols may appear on Videotek equipment:

Explanation of Symbols

OTM-20 Installation and Operation Handbook

European Restriction on Hazardous Substance (RoHS), and Waste from

Electrical and Electronic Equipment (WEEE) Compliance

About This Document

This document provides information concerning Leitch Technology International, Inc. compliance with EU

Directive 2002/95/EC and EU Directive 2002/96/EC.

Restriction on Hazardous Substances (RoHS) Directive

Directive 2002/95/EC—commonly known as the European Union (EU) Restriction on Hazardous

Substances (RoHS)—sets limits on the use of certain substances found in electrical and electronic

equipment. The intent of this legislation is to reduce the amount of hazardous chemicals that may leach

out of landfill sites or otherwise contaminate the environment during end-of-life recycling. The Directive

takes effect on July 1, 2006, and it refers to the following hazardous substances:

• Lead (Pb)

• Mercury (Hg)

• Cadmium (Cd)

• Hexavalent Chromium (Cr-V1)

• Polybrominated Biphenyls (PBB)

• Polybrominated Diphenyl Ethers (PBDE)

In accordance with this EU Directive, all Leitch Technology products sold in the European Union will be

fully RoHS-compliant and “lead-free.” (See the Leitch Web site, www.leitch.com, for more information on

dates and deadlines for compliance.) Spare parts supplied for the repair and upgrade of equipment sold

before July 1, 2006 are exempt from the legislation. Leitch equipment that complies with the EU directive

will be marked with a RoHS-compliant symbol, as shown in Figure 1.

Figure 1. RoHS Compliance Symbol

WASTE FROM ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

DIRECTIVE

The European Union (EU) Directive 2002/96/EC on Waste from Electrical and Electronic Equipment

(WEEE) deals with the collection, treatment, recovery, and recycling of electrical and electronic waste

products. The objective of the WEEE Directive is to assign the responsibility for the disposal of associated

hazardous waste to either the producers or users of these products. Effective August 13, 2005, producers

or users will be required to recycle electrical and electronic equipment at end of its useful life, and must

not dispose of the equipment in landfills or by using other unapproved methods. (Some EU member

states may have different deadlines.)

In accordance with this EU Directive, Leitch Technology International, Inc. and other companies selling

electric or electronic devices in the EU will affix labels indicating that such products must be properly

recycled.

(See the Leitch Web site, www.leitch.com, for more information on dates and deadlines for compliance.)

Contact your local Leitch sales representative for information on returning these products for recycling.

Leitch equipment that complies with the EU directive will be marked with a WEEE-compliant symbol, as

shown in Figure 2.

OTM-20 Installation and Operation Handbook

Figure 2. WEEE Compliance Symbol

OTM-20 Installation and Operation Handbook

Blank Page

OTM-20 Installation and Operation Handbook

Contents

Section 1 ♦ Introduction

Safety Information ................................................................................................................. 1-2

Safety Terms....................................................................................................................1-2

Service and Support.............................................................................................................. 1-3

Section 2 ♦ Installation

Inspecting the Shipment ....................................................................................................... 2-1

Connecting ............................................................................................................................ 2-1

Maintenance of Batteries ...................................................................................................... 2-2

Section 3 ♦ Operation

Panel ..................................................................................................................................... 3-1

GUI................................................................................................................................... 3-2

LCD Contrast ............................................................................................................... 3-2

Power Meter and Laser Source Interface.................................................................... 3-2

GUI Display.................................................................................................................. 3-3

Wavelength.................................................................................................................. 3-4

Menu Configuration and Measurement Operation................................................................ 3-4

Power Meter.....................................................................................................................3-5

W/dBm ......................................................................................................................... 3-5

Reference .................................................................................................................... 3-6

Precision ...................................................................................................................... 3-7

Average ....................................................................................................................... 3-8

Buzzer..........................................................................................................................3-9

Auto Trace ................................................................................................................. 3-10

Zero ........................................................................................................................... 3-12

Scale.......................................................................................................................... 3-13

Laser Source.................................................................................................................. 3-13

Laser On/Off .............................................................................................................. 3-14

Auto Test........................................................................................................................ 3-15

Recall ............................................................................................................................. 3-17

Clear............................................................................................................................... 3-18

Auto Off .......................................................................................................................... 3-19

Language ....................................................................................................................... 3-19

Set Default .....................................................................................................................3-19

Section 4 ♦ Data Collection Software

Introduction ........................................................................................................................... 4-1

Contents

OTM-20 Installation and Operation Handbook

Software Installation.............................................................................................................. 4-1

Computer System Requirements..................................................................................... 4-1

Install the OTM-20 Upload Application Software............................................................. 4-1

Connecting ............................................................................................................................ 4-1

Software Operation ............................................................................................................... 4-1

GUI................................................................................................................................... 4-1

Menu and Tool Bar ...................................................................................................... 4-2

Upload Records ............................................................................................................... 4-3

Save Records .................................................................................................................. 4-4

Browse Stored Data......................................................................................................... 4-4

Printing Stored Data......................................................................................................... 4-5

Auto Trace Drawing ......................................................................................................... 4-6

Exit the Software.............................................................................................................. 4-7

Section 5 ♦ Troubleshooting

Maintenance and Replacing of Batteries .............................................................................. 5-1

Cleaning the Interfaces .........................................................................................................5-1

Calibration Requirements ..................................................................................................... 5-2

Appendix A ♦ Specifications

Power Meter Specifications ..................................................................................................A-1

Laser Source Module Specifications ....................................................................................A-1

Mechanical ............................................................................................................................A-2

Environmental .......................................................................................................................A-2

Index

Figures

Figure 1-1. The OTM-20........................................................................................................... 1-2

Figure 2-1. OTM-20 Series Panel............................................................................................. 2-1

Figure 3-1. The Front OTM-20 Panel ....................................................................................... 3-1

Figure 3-2. Boot-up GUI of Optical Test Meter......................................................................... 3-2

Figure 3-3. Power Meter Interface............................................................................................ 3-2

Figure 3-4. Laser Source Interface........................................................................................... 3-3

Figure 3-5. Main Menu ............................................................................................................. 3-4

Figure 3-6. Power Meter Configuration Menu .......................................................................... 3-5

Figure 3-7. Unit of Measure Configuration ............................................................................... 3-6

Figure 3-8. Reference Configuration ........................................................................................ 3-6

Figure 3-9. Relative Measurement Menu ................................................................................. 3-7

Figure 3-10. Precision Configuration Menu.............................................................................. 3-8

Figure 3-11. Average Configuration Menu ............................................................................... 3-8

Contents

OTM-20 Installation and Operation Handbook

iii

Figure 3-12. Buzzer Configuration............................................................................................ 3-9

Figure 3-13. Buzzer Max Configuration.................................................................................... 3-9

Figure 3-14. Auto Trace Configuration ................................................................................... 3-10

Figure 3-15. Auto Trace in Progress ...................................................................................... 3-10

Figure 3-16. Tracing Finished................................................................................................. 3-11

Figure 3-17. Auto Trace Curve ............................................................................................... 3-11

Figure 3-18. Zero Operation ................................................................................................... 3-12

Figure 3-19. Auto Zero Success............................................................................................. 3-12

Figure 3-20. Calibration Failure .............................................................................................. 3-13

Figure 3-21. Scale Configuration............................................................................................ 3-13

Figure 3-22. Laser Source Configuration ............................................................................... 3-14

Figure 3-23. Laser CW/MD Configuration .............................................................................. 3-14

Figure 3-24. Laser W/dBm...................................................................................................... 3-15

Figure 3-25. Auto Test Menu.................................................................................................. 3-15

Figure 3-26. Manual Configuration of Loss ............................................................................ 3-16

Figure 3-27. Auto Test in Process .......................................................................................... 3-16

Figure 3-28. Report of Auto Test Result................................................................................. 3-17

Figure 3-29. Recall Menu ....................................................................................................... 3-17

Figure 3-30. Recall Records................................................................................................... 3-18

Figure 3-31. Clear Menu.........................................................................................................3-18

Figure 3-32. Screen for Delete Record Confirmation ............................................................. 3-19

Figure 3-33. Set Default Confirmation GUI............................................................................. 3-20

Figure 4-1. OTM-20 Data Collection Software GUI.................................................................. 4-2

Figure 4-2. File Menu................................................................................................................ 4-2

Figure 4-3. Record Menu for Software ..................................................................................... 4-3

Figure 4-4. Draw Menu............................................................................................................. 4-3

Figure 4-5. Upload Records ..................................................................................................... 4-3

Figure 4-6. Sample Save Records GUI .................................................................................... 4-4

Figure 4-7. Open Saved File .................................................................................................... 4-5

Figure 4-8. Browse Saved Records.......................................................................................... 4-5

Figure 4-9. Printing Stored Data ............................................................................................... 4-6

Figure 4-10. Power Auto Trace Interface.................................................................................. 4-6

Tables

Table 3-1. Description of the Front OTM-20 Panel .................................................................. 3-1

Table 3-2. Description of the GUI ............................................................................................. 3-3

Contents

OTM-20 Installation and Operation Handbook

Blank Page

OTM-20 Installation and Operation Handbook

1-1

Section 1 ♦ Introduction

NOTE: Please read the manual carefully before using any of the Harris fiber-optic instruments. Always

observe the warnings and cautions appearing throughout this manual. Bodily injury or damage to the

instrument can be caused when not following directions.

The Harris

OTM-20 Optical Test Meter is a new generation optical inspection tool.

This hand-held, intelligent, easy-to-use instrument is designed for fiber network

installation, verification, and routine inspection and maintenance. The OTM-20 has a

large memory capacity, and can transfer the testing data to a PC by associated software

for analyzing, graphic drawing, reporting, and printing previously stored data. Its

microprocessor and linear magnifying technology provides long-term stability. The

OTM-20 combines the function of the Laser Source (& Visible Laser) and the Power

Meter. It is ideal for both single-mode and multi-mode fiber checkouts.

This manual contains the information necessary for the proper operation and

maintenance of the Harris

Optical Test Meters. It also provides troubleshooting and

service information.

The OTM-20 features are:

• Support quick test, intelligent operation

• Graphic interface on a large easy to read LCD display

• Bilingual operation (English and simplified Chinese)

• Multi-wavelength auto self-testing

• Relative/absolute power measurement

• Measures in dB, dBm, and mW

• Large memory capacity (4000 measurements)

• RS-232 data upload port, and PC software for previously stored data analyzing,

graphic drawing, and reporting

• Both continuous wave (CW) and modulated frequency modes

• Optical connector with dual-wavelength output

• Supports auto test of optic fiber loss

• Plotted power value graph

• Optical power alarm

• Automatically store data

• Damp, dust, and shock proof design

• Powered by a NiMH battery or Power adapter with auto recharging

• Interchangeable fiber-optic connectors (FC/PC, or optional SC, ST)

• Battery level indicator and auto recharging display

• Auto off function conserving battery life

Introduction

OTM-20 Installation and Operation Handbook

1-2

The OTM-20 is illustrated in Figure 1-1.

Figure 1-1. The OTM-20

Safety Information

Please observe the following general safety precautions at each stage when using these

instruments. Violation of the safety standards of the instruments will occur if such

safety precautions are not adopted or the user fails to obey the special warning in other

parts of this manual. Harris will not take any responsibility for the results caused by

not following these requirements.

Safety Terms

WARNING identifies any procedure or practice that if not followed could result in

serious injury.

CAUTION identifies any procedure or practice that if not followed could result in

damage to the instrument or serious injury.

NOTE identifies information that may be beneficial during the use and maintenance of

the instrument.

OTM-20 Installation and Operation Handbook

1-3

The Optical Test Meter is a laser instrument. Users should avoid looking directly into

the optical output. And the use of a microscope or magnifier should also be avoided,

for the use of such devices can focus a highly intense beam onto the retina that may

result in permanent eye damage.

Battery: The battery for this instrument is a rechargeable NiMH battery. If unused for

a long time, the 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 power

volume.

Battery Power: Do not recharge batteries for more than 8 hours. Do not take batteries

out without the assistance of authorized personnel help. Do not expose batteries to fire

or intense heat. Do not open or mutilate batteries. Avoid touching the electrolyte on the

batteries, which is corrosive and may cause injuries to eyes or skin, or damage to

clothes.

Fiber Optic Laser Source

Laser Radiation: To avoid serious eye injury, never look directly into the

optic outputs of the fiber optic network equipment, test equipment, patch cords, or test

jumpers.

• Always avoid looking directly into the optic output port. The emitted laser is a

non-visible laser.

• Always replace protective dust caps on the detector port when the instrument is not

being used.

Protective Sleeve: Keep the soft plastic sleeve on the OTM-20 to avoid possible

damage.

Service and Support

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 Videotek immediately. Retain the original packing materials if

reshipment becomes necessary.

For service and support, telephone the Customer Service Department at 610-327-2292.

If the problem cannot be resolved over the telephone and the instrument must be

shipped to Videotek for service or repair:

• Obtain a Return Authorization (RA) number from the Videotek Customer Service

Department.

• Attach a tag to the unit with:

− Your company name, address, and telephone number

− The name of the contact person at your company

− The RA number

Introduction

OTM-20 Installation and Operation Handbook

1-4

− The unit serial number

− An explanation of the problem

• To prevent shipping damage, pack the unit the same way Videotek had packed it.

If possible, use the original packing materials in the original shipping container.

• Ship the unit to:

Videotek, Inc.

243 Shoemaker Road

Pottstown, PA 19464-6433

Attn: Service Dept.

OTM-20 Installation and Operation Handbook

2-1

Section 2 ♦ Installation

This section provides information about inspecting and configuring the OTM-20.

Inspecting the Shipment

The OTM-20 is carefully assembled and undergoes a rigorous mechanical, electrical,

and optical inspection prior to shipment.

Inspect the box and the contents. Report any damage to the shipper and telephone the

Videotek Customer Service Department for service and support (see Section 1,

“Service and Support”).

NOTE: Refer to the enclosed packing sheet for the latest list of items that are supplied with the unit.

The box contains the following:

• One OTM-20 with protective sleeve

• One OTM-20 Installation and Operation Handbook

• AC adapter/charger

• Soft carrying case with belt strap

• RS232 cable/adapter

• Shoulder strap that attaches to the protective sleeve

• CD-Rom software

Save the box and packing material for any future shipping requirements.

Connecting

The panel connectors are illustrated in Figure 2-1.

Figure 2-1. OTM-20 Series Panel

Power Adapter Jack

Power adapter jack requirements: 13.8V DC @ 1.2A

Installation

OTM-20 Installation and Operation Handbook

2-2

Optical Power Test Input

The fiber optic power metering input used to receive optical signal. It is a Fiber Optic

FC/PC connector. Optional SC/ST connectors available.

RS-232 Data Port

This interface is used to upload stored measurement records to the PC data collection

software for further analysis, statistics, and reporting.

CAUTION: Avoid looking directly at the optic output. The laser is a non-visible laser.

Maintenance of Batteries

The battery used for the Harris OTM-20 is the NiMH battery.

Cautions during Operation:

Auto Power Off occurs under the following conditions:

• The instrument will be auto power off when there is insufficient power during

operation and low power will be shown on the LCD.

• The Auto Off function is active and shuts down the device after being idle for 5

minutes.

Cautions in Recharge:

• When the AC adapter is applied, the OTM first performs a quick charge. After the

Quick charge is performed, the OTM automatically switches to trickle charge after

the voltage reaches a predefined parameter. The battery can be damaged if the

operating temperature range is exceeded during charging.

• Do not charge for over eight hours.

OTM-20 Installation and Operation Handbook

3-1

Section 3 ♦ Operation

Panel

The OTM-20 Series is shown in Figure 3-1.

Figure 3-1. The Front OTM-20 Panel

Table 3-1. Description of the Front OTM-20 Panel

Name Description

On/Off

This button turns the instrument on and off. After the unit is powered on,

under the default state, the OTM-20 automatically shuts down when buttons

have not been pressed for five minutes and not performing Auto Trace.

Func

Press to toggle between the Laser Source interface and the Power Meter

interface.

Set

Press to enter the Main menu. The Main menu is used to configure system

parameters.

Store

Saves measurements and results from auto test.

Backlight

Turns the LCD backlight on. Press and the light will last for approximately ten

seconds.

Quit

Exit all auto tests and menus, and return to the Graphical User Interface

(GUI).

Enter

Selects the highlighted parameter.

[ ] and [ ]

This button has several functions: On the Startup screen, it is used to adjust

the LCD contrast. In the system menu it scrolls through the menu items and

menu values. Under the Laser Source and Power Meter mode, it is used to

switch the wavelength.

Operation

OTM-20 Installation and Operation Handbook

3-2

GUI

LCD Contrast

After powering on, the Graphical User Interface (GUI) will be displayed, as shown in

Figure 3-2.

Figure 3-2. Boot-up GUI of Optical Test Meter

The surrounding temperature will affect the LCD contrast. Contrast can be adjusted by

pressing the button through the following procedures.

• Power on the instrument, the GUI is displayed (as shown in Figure 3-2).

• Press the button and the contrast will be increased. Press button and the

contrast will be reduced.

Power Meter and Laser Source Interface

Press FUNC and the instrument will enter the Power Meter interface, as shown in

Figure 3-3.

Figure 3-3. Power Meter Interface

Press FUNC again to switch between the Power Meter interface and the Laser Source

interface. The Laser Source interface is shown in Figure 3-4.

Operation

OTM-20 Installation and Operation Handbook

3-3

Figure 3-4. Laser Source Interface

GUI Display

As shown in Figure 3-3 and Figure 3-4, the GUI Display contains the items described

in Table 3-2.

Table 3-2. Description of the GUI

Key

Name Description

Wavelength Wavelength of the selected function: Laser Souce or Power Meter.

Power Value

Display

In the Laser Source mode, “Laser Off” or the output power value will be

displayed. In the Power Meter mode, a series of “-“ or the measured

input power value will be displayed.

Modulation

Frequency

In the Laser Source mode, the modulation frequency (or CW) will be

displayed. In the Power Meter mode, the modulation frequency of 270,

1000, or 2000 Hz will be displayed (if the modulation is present).

Scale In the power meter mode, the bar is used to display the power level

above and below the reference value. “

” indicates the reference

value. The ± value indicates the selected scale, which is the maximum

and minimum indication above and below the reference value.

DC Batteries power the instrument. When the instrument is powered by the

rechargeable batteries, the charge volume of the batteries is shown on

the LCD:

(Table continues on next page)

Operation

OTM-20 Installation and Operation Handbook

3-4

Table 3-2. Description of the GUI (continued)

5 (cont)

AC (not shown) The instrument is powered through an AC/DC adapter. When the

instrument is powered on and powered through the AC/DC adapter, the

batteries are automatically recharged. The battery symbol on the LCD

indicates charge status:

Auto Off This is the Auto Off enable indication. After powering on, the Auto-Off

function default status is enabled. If no buttons have been pressed for 5

minutes, the instrument will automatically turn off for the benefit of

conserving battery life.

Wavelength

In the Power Meter or Laser Source modes, the wavelength can be changed by pressing

[ ] and [ ].

Menu Configuration and Measurement Operation

When in the GUI, press the SET button to enter the Main Menu, as shown in

Figure 3-5.

Figure 3-5. Main Menu

Press the

button to scroll through the currently activated menu bar, then press the

ENTER button to enter the activated sub menu. Press the QUIT button to return to a

higher-level menu.

The Main Menu includes the following menu selections:

Power Meter

Laser Source

Auto Test

Recall

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Harris OTM-20 Installation And Operation Handbook

Harris OTM-20 Installation And Operation Handbook

Harris OTM-20 Installation And Operation Handbook

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