137800-1.book Page 1 Friday, March 20, 2009 11:37 AM
Optical Power Meter
User Guide - 137800
Testing the World’s Networks
TrendCommunications
137800-1.book Page i Friday, March 20, 2009 11:37 AM
Copyright Notice
No part of this document may be reproduced or
used except as authorised by contract or other
written permission from Trend Communications
Ltd. The copyright and all restrictions on
reproduction and use apply to all media in which
this information may be placed.
Trend Communications Ltd. pursues a policy of
continual product improvement and reserves the
right to alter without notice the specification,
design, price or conditions of supply of any product
or service.
The Trend name is a registered trademark of Trend
Communications Ltd.
© TrendCommunications Ltd. 2009
All rights reserved
Issue 1 - 03/09
i
English
The information contained in this document is the
property of Trend Communications Ltd. and is
supplied without liability for errors and omissions.
137800-1.book Page ii Friday, March 20, 2009 11:37 AM
Handheld Light Source
Publication ref: 137800
Issue 1 - 03/09
TrendCommunications Ltd.
Whitebrook Park,
Lower Cookham Road,
Maidenhead,
Berkshire,
SL6 8XY
United Kingdom
Tel: +44 (0) 1628 503500
Fax: + 44 (0) 1628 503599
Email: infoline@trendcomms.com
ii
137800
137800-1.book Page iii Friday, March 20, 2009 11:37 AM
Contents
Welcome to the Optical Power Meter............................... EN-1
Supplied with the Optical Power Meter............................ EN-1
Optional Accessories........................................................ EN-1
Safety Advice .................................................................... EN-1
Looking after your Optical Power Meter........................... EN-2
Looking after the Optical Connectors .............................. EN-2
Buttons.............................................................................. EN-4
Input Port (SC/FC/ST Connector) .................................... EN-4
Understanding the Display ............................................... EN-5
Backlight Auto On Indicator ............................................. EN-5
Disabling and Enabling Backlight Auto On ........... EN-5
Auto Power Off Indicator .................................................. EN-6
Disabling and Enabling Auto Power Off ................ EN-6
Battery Low Indicator........................................................ EN-6
Mode Indicator ....................................................... EN-6
Current Power Reading.......................................... EN-6
Performing a Measurement .............................................. EN-7
Absolute Power Measurement ......................................... EN-7
Optical Fibre Loss Measurement ..................................... EN-7
Fitting and Using Batteries ............................................... EN-9
Calibrating the Optical Power Meter .............................. EN-10
Changing into Calibration Mode .................................... EN-10
Changing and Storing the New Calibration Settings..... EN-10
Use of Optical Laser Source with LC cables.................. EN-11
Specifications.................................................................. EN-12
Issue 1 - 03/09
iii
English
A Look at the Optical Power Meter................................... EN-3
137800-1.book Page iv Friday, March 20, 2009 11:37 AM
Optical Power Meter
iv
137800
137800-1.book Page 1 Friday, March 20, 2009 11:37 AM
Welcome to the Optical Power Meter
Welcome to the Optical Power Meter, a handheld
instrument which enables you to measure the power output
over fibre optic cables in the field.
The Optical Power Meter is designed to be as a companion
to the Trend Optical Light Source or any suitable optical
light source.
Supplied with the Optical Power Meter
This User Guide
Protective Cover
3 x 1.5V batteries
Set of adaptors for SC/FC/ST connectors
Carrying case
English
•
•
•
•
•
Optional Accessories
An optional FC/LC adaptor is available from Trend
Communications. See Use of Optical Laser Source with LC
cables on page EN-11.
Safety Advice
Caution
When using the Optical Power Meter, always take basic
safety precautions to reduce the risk of fire, electric shock
and injury to persons. These include the following:
• Avoid using the tester during an electrical storm—there
is a remote risk of electric shock by lightning.
• Use only the batteries supplied with the tester. See
Fitting and Using Batteries on page EN-9.
• Do not dispose of batteries in a fire—they may
explode.
• Disconnect all interface cables before removing the
battery cover.
• Never remove the rubber cover of the case while the
Optical Power Meter is switched on or connected to
the network.
Issue 1 - 03/09
EN-1
137800-1.book Page 2 Friday, March 20, 2009 11:37 AM
Optical Power Meter
Looking after your Optical Power Meter
Although light and portable, the Optical Power Meter is
very robust and has been designed to operate in a typical
outdoors working environment.
To ensure reliable operation, avoid:
• very high or low temperatures—the Optical Power
Meter is designed to operate between -10°C and
+60°C. You can store the unit safely between -25°C
and +70°C. We recommend that you remove the
batteries if you are going to store the Optical Power
Meter for a period of time.
• very wet conditions—the Optical Power Meter is
weather-resistant but not waterproof. You can use it in
light rain when held vertically, but you should never
immerse the unit in water.
• Do not attempt to open the Optical Power Meter or
you will invalidate your warranty.
To avoid damage, we recommend that you keep the Optical
Power Meter in its carrying case when you are not using it.
Caution: Cleaning the Optical Power Meter
Do not use solvents, strong detergents or abrasive materials
to clean the Optical Power Meter. Use only cleaning agents
approved for use on ABS and polycarbonate plastics.
Looking after the Optical Connectors
•
•
EN-2
If the power reading decreases the connectors may need
cleaning with the cotton swabs supplied using alcohol.
If the problem persists contact your Trend
Representative.
When not in use make sure that you place the
protective caps over the connectors.
137800
137800-1.book Page 3 Friday, March 20, 2009 11:37 AM
Looking after your Optical Power Meter
A Look at the Optical Power Meter
The main features of the Optical Power Meter are identified
below.
Input port
(SC/FC/ST Connector)
English
Display
Backlight
Button
dB
Button
On/Off Button
Zero Button
Wavelength
Button
Protective
Cover
Issue 1 - 03/09
EN-3
137800-1.book Page 4 Friday, March 20, 2009 11:37 AM
Optical Power Meter
Buttons
The buttons are multifunctional. When used in combination
with other buttons they perform different actions.
On/Off Button
Press and release immediately to switch the Optical Power
Meter on.
Press and hold for 2 seconds to switch the Optical Power
Meter off. To disable or enable the Auto Power Off option
see Auto Power Off Indicator on page EN-6.
Zero Button
Press to store the calibration settings. See Changing and
Storing the New Calibration Settings on page EN-10.
Wavelength Button
Press to cycle through the wavelengths.
dB Button
Press to display the power received in either Absolute Mode
(dBm) or Relative Mode (dB).
Backlight Button
Press to switch the backlight on and off. See Backlight Auto
On Indicator on page EN-5 for more information.
Input Port (SC/FC/ST Connector)
The wavelength must be set to the same wavelength that is
being received.
The following wavelengths are available:
• 850nm
• 980nm
• 1300nm
• 1490nm
• 1550nm
EN-4
137800
137800-1.book Page 5 Friday, March 20, 2009 11:37 AM
Understanding the Display
Understanding the Display
Auto Power Off
Indicator
Selected
Wavelength
Battery Low
Indicator
Backlight
Auto On
Indicator
Mode
Indicator
English
Alternative
Power
Reading
Current
Power
Reading
Typical Screen
Backlight Auto On Indicator
This is displayed when you have selected for the backlight
to automatically switch on when you switch on the Optical
Power Meter.
This is not displayed to indicate that you have not selected
for the backlight to automatically switch on when you
switch on the Optical Power Meter.
Disabling and Enabling Backlight Auto On
-1- Switch the Optical Power Meter on.
-2-
Press and release
to disable or enable the
Backlight Auto On option.
The Backlight Auto On Indicator is displayed when
you have enabled Backlight Auto On.
Issue 1 - 03/09
EN-5
137800-1.book Page 6 Friday, March 20, 2009 11:37 AM
Optical Power Meter
Auto Power Off Indicator
When you switch the Optical Power Meter on Auto Power
Off is enabled. If you do not use any buttons for
approximately 5 minutes the Optical Power Meter will
switch off automatically.
Disabling and Enabling Auto Power Off
-1- Switch the Optical Power Meter on.
-2-
Press
and
simultaneously and then release
them simultaneously to disable or enable the Auto
Power Off option.
The Auto Power Off Indicator is displayed when you
have enabled Auto Power Off.
Battery Low Indicator
This is displayed when the batteries do not have enough
power to operate the Optical Power Meter.
Mode Indicator
This displays the current operating mode. See Calibrating
the Optical Power Meter on page EN-10.
Current Power Reading
When you first perform a power reading it is displayed in
dBm. To change the reading to display the relative power in
dB, press
. See also Optical Fibre Loss Measurement on
page EN-7. The Current Power Reading display is also used
when calibrating the Optical Power Meter. See Calibrating
the Optical Power Meter on page EN-10.
EN-6
137800
137800-1.book Page 7 Friday, March 20, 2009 11:37 AM
Understanding the Display
Performing a Measurement
The Optical Power Meter can perform two types of
measurement, Absolute Power and Relative power.
-1-2-
Switch the Optical Power Meter on.
Connect to a light source.
-3-4-
Press
to match the incoming wavelength.
The Absolute Power Reading is displayed in dBm and
mW.
Absolute
Power
Reading
Absolute Mode
Optical Fibre Loss Measurement
This is sometimes referred to as Relative Power
Measurement.
-1- Switch the Optical Power Meter on.
-2- Connect to a light source, using the patch cords that
you are going to use for the cable measurement.
-3-
Press
and select the wavelength to match the
wavelength of the source.
Issue 1 - 03/09
EN-7
English
Absolute Power Measurement
137800-1.book Page 8 Friday, March 20, 2009 11:37 AM
Optical Power Meter
-4-
The Absolute Power Reading is displayed dBm and
mW.
Current Absolute
Value
Optical Fibre Loss Example 1
-5-
Press
to save the current Absolute Power
Reading as a Reference value.
Reference
Value
Relative
Value
Optical Fibre Loss Example 2
EN-8
137800
137800-1.book Page 9 Friday, March 20, 2009 11:37 AM
Fitting and Using Batteries
-6-
-7-8-
The power relative to the Reference value is
displayed.
The Current Reading at the bottom now displays the
power Relative to the Reference Value.
Connect the Optical Power Meter and the light
source to opposite ends of the cable to be tested.
The cable loss is displayed in dB.
English
Cable Loss
Cable Loss
Fitting and Using Batteries
-1-2-3-
-4-
Press the clip fastener on the battery compartment
cover down.
Remove the battery compartment cover.
Remove all three batteries making a note of their
positive (+) and (-) negative connector orientation.
The (-) negative battery connector should be against
the spring.
Insert 3 new 1.5 V AA batteries.
Warning
Make sure that you insert the batteries with their positive
(+) and negative (-) connectors correctly aligned.
-5- Refit the battery compartment cover.
The clip fastener should click shut.
-6- Switch the Optical Power Meter on.
Issue 1 - 03/09
EN-9
137800-1.book Page 10 Friday, March 20, 2009 11:37 AM
Optical Power Meter
Calibrating the Optical Power Meter
The Input Port on the Optical Power Meter is factory
calibrated but you can change the calibration settings, if
required, for each wavelength.
Warning
If you change and store new calibration settings you
CANNOT return to the factory settings.
-1- Switch the Optical Power Meter on.
The Mode Indicator displays 0 to indicate that the
Optical Power Meter is in Testing Mode.
-2- Connect the Optical Power Meter to a calibrated
Light Source.
-3- Measure the input power.
If the reading is incorrect, adjust the calibration. See
Changing into Calibration Mode on page EN-10.
Changing into Calibration Mode
-1-
Press
and
simultaneously to change into
Calibration Mode.
The Mode Indicator displays 1 to indicate that the
Optical Power Meter is now in Calibration Mode.
-2-
Press
to select the wavelength you want to
calibrate.
Changing and Storing the New Calibration Settings
The following options can be repeated for each wavelength
as required.
-1- To increase or decrease the power reading in
0.05dBm increments:
- Press
to increase the power reading. Repeat as
necessary.
- Press
to decrease the power reading. Repeat as
necessary.
EN-10
137800
137800-1.book Page 11 Friday, March 20, 2009 11:37 AM
Calibrating the Optical Power Meter
-2-
When you have finished calibrating press
store the new settings.
to
OR
-3-4-
Press
and
to exit Calibration Mode.
The Mode Indicator displays 0 to indicate that the
Optical Power Meter is now in Testing Mode.
The Optical Power Meter is now ready for
performing measurements.
Use of Optical Laser Source with LC cables
FC Connector
Rx
You will need:
FC/LC Hybrid Adaptor (135051). You can slide the ferrule
of an LT connector into the adaptor.
Issue 1 - 03/09
EN-11
English
Press
and
simultaneously to return to the
factory calibration settings.
137800-1.book Page 12 Friday, March 20, 2009 11:37 AM
Optical Power Meter
Specifications
Dimensions:
Length: 175mm (including protective cover)
Width: 82mm (at widest point, including protective cover)
Depth: 33mm(including protective cover)
Weight: 325g approximately (including batteries)
Optical Connectors: SC/FC/ST Connectors
Wavelength: 800 to 1700nm
Power Supply: 3 x AA 1.5V Alkaline batteries. See Fitting
and Using Batteries on page EN-9.
Battery life: Up to 240 hours depending on usage.
EN-12
137800
137800-1.book Page 2 Friday, March 20, 2009 11:37 AM
Trend Communications Ltd.
Whitebrook Park
Lower Cookham Rd.
Maidenhead, Berkshire
SL6 8XY - UK
TrendCommunications
China: +86 10 8518 3141
+49 (0) 8932 3009-30
+34 93 300 3313
+33 01 69 35 54 70
+91 11 25554161
+44 (0) 1628 503500
Deutschland:
España:
France:
India:
UK:
web: www.trendcomms.com
mail: infoline@trendcomms.com
A subsidiary of IDEAL INDUSTRIES, INC.
Download PDF
Similar pages