JDS Uniphase cOPM-A1 User manual

cOPM-A1
Optical Power Meter
BN2297/98.12
2008.11
English
BN 2297/02Operating Manual

The description of additional features of the
device can be found at:
http://www.jdsu.com/test
Copyrights
This product or parts of this product are based on the Rec-
ommendations and/or Standards issued by the Standard-
ization Sector of the International Telecommunications
Union - ITU-T and/or the European Telecommunications
Standards Institute - ETSI. These Recommendations and
Standards are copyright to these organizations. ITU-T Rec-
ommendations or ETSI Standards may not be copied and/
or made available to third parties in whole or in part without
the written agreement of ITU-T and/or ETSI.
© Copyright 2008 JDSU Deutschland GmbH. All rights
reserverd.
JDSU and JDSU logo are trademarks of JDS Uniphase
Corporation.
Other trademarks are the property of their respective
holders.
JDSU Deutschland GmbH
Mühleweg 5, 72800 Eningen u. A.
Note: Changes may be made to specifications,
descriptions and delivery information.
Printed in Germany
Order no.: BN2297/98.12
Version: 2008.11
Previous version: -.-

CONTENT
JDSU cOPM-A1 i
CONTENT
1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . 1
cOPM-A1 Optical Power Meter . . . . . . . . . . . . . . . 1
Operating manual update . . . . . . . . . . . . . . . . . . . 2
Symbols used in this operating manual . . . . . . . . 3
2SAFETY INFORMATION. . . . . . . . . . . . . . . . . . 5
Warning symbols on the unit. . . . . . . . . . . . . . . . . 5
Proper usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Laser safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SNT-121A Adapter . . . . . . . . . . . . . . . . . . . . . . . . 7
3GETTING STARTED . . . . . . . . . . . . . . . . . . . . 8
Unpacking the device . . . . . . . . . . . . . . . . . . . . . . 8
Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4BASIC OPERATION . . . . . . . . . . . . . . . . . . . 15
Switching the device on/off . . . . . . . . . . . . . . . . . 15
Display elements. . . . . . . . . . . . . . . . . . . . . . . . . 15
Navigating in the menus . . . . . . . . . . . . . . . . . . . 16
Configuring the device . . . . . . . . . . . . . . . . . . . . 17
5OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 25
Selecting a wavelength . . . . . . . . . . . . . . . . . . . . 25
Displaying absolute power level . . . . . . . . . . . . . 26
Displaying relative power level . . . . . . . . . . . . . . 26
Displaying modulated signals . . . . . . . . . . . . . . . 27
6MEMORY MANAGEMENT . . . . . . . . . . . . . . . 28
General information. . . . . . . . . . . . . . . . . . . . . . . 28
Saving results successively. . . . . . . . . . . . . . . . . 29
Displaying stored results . . . . . . . . . . . . . . . . . . . 30
Selecting the store location . . . . . . . . . . . . . . . . . 32
Clearing the memory. . . . . . . . . . . . . . . . . . . . . . 33

CONTENT
JDSU cOPM-A1 ii
7MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . 35
Cleaning the test port . . . . . . . . . . . . . . . . . . . . . 35
Cleaning the instrument . . . . . . . . . . . . . . . . . . . 36
8REMOTE CONTROL . . . . . . . . . . . . . . . . . . . 37
Communication interface. . . . . . . . . . . . . . . . . . . 37
Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 47
General specifications . . . . . . . . . . . . . . . . . . . . . 47
Integrating sphere specifications. . . . . . . . . . . . . 49
SNT-121A Adapter . . . . . . . . . . . . . . . . . . . . . . . 49
10 ORDERING INFORMATION . . . . . . . . . . . . . . 50
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

JDSU cOPM-A1 1
1INTRODUCTION
cOPM-A1 Optical Power Meter
The Optical Power Meter (BN 2297/02) measures power
levels on fiber optic systems.
The cOPM-A1 Test set is specially designed for high
performance testing of all optical signals and systems,
i.e. broadband, PONs, and Gigabit Ethernet.
AC line operation via a separate AC adapter and the
USB interface for remote control ensure ease of use in
the laboratory. The Compact Photonic Tools are
stackable, so you can assemble individual test sets.
Common features
The cOPM-A1 offers a new portfolio of point solutions for
fiber optic test applications. The cOPM-A1 Optical Power
Meter is optimized for a number of applications ranging
from general lab use to test and process automation for
passive optical components.
It can be used with both single-mode and multimode
fiber and offers power levels from –80 to +15 dBm over a
wavelength range of 800 to 1650 nm.
The cOPM-A1 features high accuracy, high linearity, and
extremely low polarization-dependent sensitivity.

2 cOPM-A1JDSU
1 INTRODUCTION
Innovative features
Auto dark current
The cOPM-A1 removes the need for manual dark current
measurements through innovative analogue circuit
design. Typical power meters must be routinely and
manually terminated to measure residual current from
the photodiode. If this termination is not performed,or
performed poorly, significant errors can result for low
power measurements. The cOPM-A1 automatically
conducts these measurements in the background, which
results in zero downtime for a test station and simplifies
daily start-up procedures.
TWIN or TRIPLE Test
For Insertion Loss and Return Loss measurements,
TWIN or TRIPLE tests dramatically lower test durations
up to three times by allowing for the simultaneous
measurement of two or three wavelengths. To enable
TRIPLE Test, the cOPM-A1 is paired with either the
cFPL-A1 Fabry-Perot Light Source or the cORL-A1
Optical Return Loss Meter.
Operating manual update
Continuing enhancement and further development of the
Compact Photonic family may mean that this operating
manual does not cover all the latest functions of your
device.
If the operating instructions about features provided by
your device are missing, please visit the JDSU web site
to check if additional information is available.
To download the latest operating instructions:
1. Visit the JDSU web site at www.jdsu.com/test.
2. Select your model from the product line.
3. Open the download area and download the operating
instructions if available.

JDSU cOPM-A1 3
1 INTRODUCTION
Symbols used in this operating
manual
The following symbols, warnings and character formats
are used in this operating manual:
CAUTION
Follow the instructions carefully to
avoid damage to the device.
WARNING
Follow the instructions carefully to
avoid damage to the device or injury
to the person.
DANGER
Follow the instructions carefully to
avoid damage to the device or severe
injury to the person.
High Voltage
Follow the instructions carefully to
avoid damage to the device or severe
injury to the person.
This safety instruction is given if the
danger is due to high voltage.
Laser
Follow the instructions carefully to
avoid damage to the device or severe
injury to the person.
This safety instruction is given if the
danger is due to laser radiation.
Information specifying the laser class
is also given.
!Very important instruction
Follow this instruction carefully; e.g.
!Make sure you protect yourself and
others from exposure to laser light.

4 cOPM-A1JDSU
1 INTRODUCTION
✓Requirement
This requirement must be met first;
e.g.
✓The system is switched on
⇒
1.
2.
Instruction
Follow the instructions given (the
numbers indicate the order in which
the instructions should be followed);
e.g.
⇒Select mode.
Italics Result
Indicates the result of following an
instruction; e.g.
The page opens.
Bold type
face
Pages, controls, and display
elements
Screen pages, controls, and display
elements are indicated in bold type.
Tex t i n b l u e Cross references
Cross references are indicated in blue
type. When using the PDF version,
just click on the blue text to skip to the
cross reference.
[Store] Instrument keys
Instrument keys are indicated within
square brackets.

JDSU cOPM-A1 5
2SAFETY
INFORMATION
Warning symbols on the unit
Proper usage
This instrument is intended for measurements on optical
fiber devices and systems.
⇒Please make sure the device is not operated outside
the permitted ambient conditions.
⇒Observe the specified measurement range.
⇒Always make sure that the device is in proper working
order before switching it on.
Warning symbols indicating a
potential hazard
!In all cases where the unit is labeled with
a warning symbol, the operating manual
must be consulted to learn more about
the nature of the potential hazard and
any action that must be taken.

6 cOPM-A1JDSU
2 SAFETY INFORMATION
Laser safety
Ventilation
WARNING
Dangerous laser radiation
Laser radiation can cause irreparable
damage to the eye and skin.
The maximum permitted power for the cOPM-A1 means
that the optical input signals can reach Hazard Level 4,
depending on the device type.
Bear this in mind when using the cOPM-A1.
!Always be aware of the hazard level of the device to
be connected.
!Connect all optical fibers before switching on the
radiation source.
!Switch off the laser source before disconnecting the
optical fibers.
!Never look directly into the output of a laser source or
into an optical fiber connected to it.
!Always cover unused ports.
!Heed the normal precautions for working with laser
radiation and consider local regulations.
CAUTION
Insufficient ventilation
Insufficient ventilation can damage the
device or adversely affect its function
and safety.
!Ensure adequate ventilation when operating the
device.

JDSU cOPM-A1 7
2 SAFETY INFORMATION
SNT-121A Adapter
Safety class
The SNT-121A AC Adapter/Charger Unit is protectively
isolated to conform with IEC 60950.
Environmental conditions
CAUTION
Ambient temperature too high/low
Temperatures outside the operating
range of 0 to +40 °C can damage the
SNT-121A Adapter or adversely affect
its function and safety.
!Only operate the SNT-121A Adapter indoors.
! The SNT-121A Adapter must only be operated at
ambient temperatures between 0 and +40 °C.
CAUTION
Insufficient ventilation
Insufficient ventilation can damage the
SNT-121A Adapter or adversely affect
its function and safety.
!Ensure adequate ventilation when operating the
SNT-121A Adapter.
CAUTION
Condensation
Operation in the presence of
condensation can damage the
SNT-121A Adapter or adversely affect
its function and safety.
!Do not operate the SNT-121A Adapter if condensation
has formed.
!If condensation cannot be avoided, such as when the
SNT-121A Adapter is cold and is moved to a warm
room, wait until the SNT-121A Adapter Unit is dry
before plugging it into the AC power line.

8 cOPM-A1JDSU
3GETTING STARTED
Unpacking the device
Packing material
We suggest that you keep the original packing material.
It is designed for reuse (unless it is damaged during
shipping). Using the original packing material ensures
that the device is properly protected during shipping.
Checking the package contents
Your level meter is shipped with the following accessories:
• 1 adapter (BN 2297/00.xx)
• Operating manual
• AC-Adapter SNT-121A
Checking for shipping damage
After you unpack the device, check to see if it has been
damaged during shipping. This is particularly likely if the
packaging is visibly damaged. If there is damage, do not
attempt to operate the device. Doing so can cause
further damage. In case of damage, please contact your
local JDSU Sales Company. Addresses can be found at
www.jdsu.com.

JDSU cOPM-A1 9
3 GETTING STARTED
Recovery following storage/shipping
Condensation can occur if a device that is stored or
shipped at a low temperature is brought into a warm
room. To prevent damage, wait until no more
condensation is visible on the surface of the device
before powering it up. Do not operate the device until it
has reached its specified temperature range and wait
until it has cooled down if the device was stored at a high
temperature (see „Ambient temperature”, page 48).

10 cOPM-A1 JDSU
3 GETTING STARTED
Device overview
Fig. 1 Frontal view
1
2
5
4
4
3
6
6

JDSU cOPM-A1 11
3 GETTING STARTED
1Connector panel (see page 12 for details)
2Device label
3Display
4Stand
5Power supply connector, USB control interface,
reset button (on rear of the device)
6Keys
λPress to select a wavelength.
PREV Press to go back one menu level
(without making any changes).
MENU
ENTER
Press to:
• open menu and select menu item
• store settings
STORE Press to store displayed values.
dBm/W Press to toggle level display between
dBm and Watt.
dB
REF
Press to:
• select relative level power
measurement
• and hold to set the reference level
Press to switch the device on and off.
Press to:
• scroll up/down in the menus
• change values in the menus

12 cOPM-A1 JDSU
3 GETTING STARTED
Connector panel
Fig. 2 cOPM-A1 connector panel
Power supply
The following power sources can be used to operate the
cOPM-A1:
• the SNT-121A Adapter
• via the USB control interface
Operation from AC power
NOTICE: Only the SNT-121A Adapter must be used to
operate the cOPM-A1 from AC power.
To fit the AC line plug adapter:
1. Select the appropriate AC line plug adapter.
2. Slide the AC line plug adapter into the slot.
The SNT-121A Adapter is ready for use.
1Optical connector
1

JDSU cOPM-A1 13
3 GETTING STARTED
Fig. 3 SNT-121A Adapter.
To change the AC line plug adapter:
1. Place the SNT-121A against the edge of a table or
bench as shown (see Fig. 4).
2. Push the SNT-121A downwards.
3. Slide a different AC line plug adapter into the slot
(see Fig. 3).
Fig. 4 SNT-121A: Changing the AC line plug adapter.
To operate the cOPM-A1 from AC power:
1. Connect the SNT-121A DC power cord to the
cOPM-A1 DC power socket.
(The socket is located on the back panel.)
2. Plug the SNT-121A into the AC line socket.
The cOPM-A1 switches on automatically when
powered from the SNT-121A.

14 cOPM-A1 JDSU
3 GETTING STARTED
Operation from USB interface power
Although the USB interface is primarily intended for
remote control, it can also be used to power the
cOPM-A1.
To power the cOPM-A1 via the USB interface:
⇒Just connect a standard USB cable to any USB socket
of a PC or USB hub.
Notes:
• The device can be operated manually even if it is
powered via the USB interface.
• The device will be powered by the SNT-121A Adapter
if the SNT-121A Adapter and the USB interface are
both connected.

JDSU cOPM-A1 15
4BASIC OPERATION
Switching the device on/off
To switch the device on:
⇒Press [*]to switch on the device.
To switch the device off:
⇒Press and hold down [*]for more than 2 sec. to
switch off the device.
Display elements
Fig. 5 Measurement display
External power supply
The cOPM-A1 is powered by the
external AC adapter when this symbol
is shown.
USB Power supply via USB
The device is powered via the USB
interface for remote operation.

16 cOPM-A1 JDSU
4 BASIC OPERATION
Navigating in the menus
✓The measurement display is shown.
⇒Press [MENU ENTER] to open the MAIN menu.
The MAIN menu opens.
To select a menu item:
1. Press [▲▼]to highlight an item.
2. Press [MENU ENTER] to select the item.
To leave a menu without making any changes:
⇒Press [PREV].
1310nm Wavelength
Display of selected wavelength
(displayed wavelength depends on
settings and model).
CW
Auto-λ
Signal modulation
•CW: Continuous wave
•Auto-λ:Auto wavelength detection
•270 Hz, 1 kHz, 2 kHz: modulation
frequency
Center of
display
Shows the measurement results or
setup values.