YOKOGAWA AQ2160-01 User manual

User’s
Manual
IM SU1004A-01E
3rd Edition
Model SU1004A
AQ2160-01
Optical Powermeter

Contents
1. Introduction ････････････････････ 1
2. Features of the Instrument ････････････････････ 1
3. Warranty ････････････････････ 1
4. Checking the Contents of the Package ････････････････････ 1
5. Safety Symbols ････････････････････ 2
6. Specifications ････････････････････ 7
7. Periodic Calibration ････････････････････ 8
8. Names and Functions of Parts ････････････････････ 9
9. Attaching the Neck Strap ････････････････････ 11
10. Operating Procedure ････････････････････ 11
11. Handling Precautions ････････････････････ 15
12. If You Suspect a Malfunction ････････････････････ 17
Drawing
• Outline drawing of the AQ2160-01 Optical Powermeter ･･････ 18

1
1. Foreword
Thank you for purchasing the AQ2160-01 Optical Powermeter. This user’s
manual contains useful information about the instrument’s functions and
operating procedures and lists important handling precautions. To ensure
proper use of the instrument, please read this manual thoroughly before
beginning operation. After reading this manual, keep it in a convenient
location for quick reference in the event a question arises during operation.
2. Features of the Instrument
The AQ2160-01 is an optical powermeter for measuring optical signal power,
and is ideal for performing checks on newly installed optical fibers1. The
instrument supports wavelengths of 850 nm, 1310 nm, and 1550 nm, and
features a backlight, power saving function, and battery charge indicator.
Compact, lightweight, and battery-driven, the unit is a powerful tool in the
field.
1. Supports single mode: (9/125 µm) and multimode: GI (50/125 µm), GI
(62.5/125 µm). Supports SC or FC optical connectors (please specify a
connector type when ordering).
3. Warranty
Prior to shipment, all Yokogawa products must pass strict testing based on
the Yokogawa Quality Assurance System. However, should any damage
occur during manufacturing or shipping that becomes evident during normal
use, please contact the sales office at our headquarters or your nearest
Yokogawa representative. Should this product experience any malfunction
during the warranty period (within one year from the day of delivery)
Yokogawa shall replace the product free of charge. However, this warranty
is invalid for malfunction or damage resulting from user error, rework or
modifications performed by the user, or natural disasters, even during the
warranty period.
4. Checking the Contents of the Package
Please check the items listed below before using the instrument.
If some items are missing or otherwise inconsistent with the contents
description, please contact your dealer or nearest Yokogawa representative.
The package includes the AQ2160-01 Optical Powermeter plus the standard
accessories listed in the table below (we recommend that you save the
packaging box for future transport of the instrument).

2
●List of Standard Accessories
No. Product Name Qty.
1 User's manual 1
2 AA dry cells (alkaline) 2
3 Neck strap 1
4 Carrying pouch 1
The following options are available for purchase separately. For inquiries
and ordering, please contact the dealer from which you purchased the
instrument.
●Options (Sold Separately)
No. Name Model Specifications
1 Protector SU2002A (for the AQ2160)
2 AC adapter SU2007A-M
-C
-F
-G
-J
PSE conforming type
(2-pin)
UL/CSA standard type
(UL2P)
VDE standard type
(CEE-C2)
AS standard type (AS2P)
BS standard type (BS2P)
angle
3 Soft carrying case SU2006A
5. Safety Symbols
This section describes various symbols that appear in the manual and on the
instrument. These symbols convey information necessary for correct
operation of the instrument, and for preventing injury to the user and other
personnel, and accidents involving, or damage to equipment. Always heed
the information provided by these symbols when operating the instrument.
If this instrument is used in a manner not specified in this manual, the
protective features provided by the instrument may be impaired.
Also, Yokogawa assumes no liability for the customer's failure to comply with
these requirements.
●The following describes levels of damage that can occur as a result of
incorrect operation.
Indicates actions or situations that are likely to result
in imminent death or serious injury.
Indicates actions or situations that can lead to death
or serious injury.
Indicates actions or situations that can lead to loss of
data, or physical damage to instruments.
DANGER
WARNING
CAUTION

3
●The following explains warning symbols that must be adhered to.
Prohibited (indicates prohibition of a particular action).
Indicates that
disassembly is prohibited.
Indicates that use near
water, or contact with liquids
(spills, etc.) is prohibited.
Indicates that handling with wet hands is prohibited.
Required (indicates
something that must be
done).
Indicates that the power
plug must be removed from
the outlet.
Read the manual thoroughly, and follow the instructions given.
If “Caution,” “Warning,” or “Danger” is indicated in the user’s manual,
follow the corresponding instructions.
When using an AC power supply for this instrument, always use
the AC adapter that came with the instrument. Never use the AC
adapter with any other instrument. Doing so could result in
damage or injury.
=> Fire, electric shock, or malfunction can result.
Do not use a power supply other than the one specified. Also, do
not use with power supply voltages other than those indicated by
this manual.
=> Fire, electric shock, or malfunction can result.
When connecting the instrument to commercial power, connect
directly to a dedicated power outlet. Do not use extension cords
as they can overheat and cause fire.
Do not bring the power cord near any hot objects.
=> The coating on the cord can deteriorate, causing fire or electric
shock.
DANGER

4
Do not impair, damage, or attempt to modify the power cord.
=> Fire or electric shock can result.
Never place spent batteries in fire.
=> Explosion, fire, or burns can result.
Do not insert or drop any metal objects into any openings on the
instrument, or inside the instrument.
=> Fire, electric shock, or malfunction can result.
The sensor element of this instrument contains indium gallium
arsenide (InGaAs). InGaAs powder and vapor is hazardous.
Therefore, never incinerate, destroy, break, grind, or apply
chemicals to the instrument. Keep separate from general industrial
or household waste, and dispose of the instrument according to
relevant local laws.
Do not plug too many cords into a single power supply outlet.
=> Heating of the cables or fire can result.
Never bend, twist, or pull cables forcefully.
=> Fire or electric shock can result.
If the power cord becomes damaged, have it replaced immediately
by the dealer from which you purchased the instrument.
=> Otherwise fire or electric shock can result.
Never plug in or unplug the power cord with wet hands.
=> Electric shock can result.
Insert the power plug securely into the power outlet.
=> If metal or other objects are allowed to contact the plug, fire or
electric shock can result.
When unplugging the power cord always pull by the plug, never pull
by the cord itself.
=> Pulling the power cord can cause damage leading to fire or
electric shock.
Always unplug the power cord from the outlet, and check that all
externally connected wires and cables are removed before moving
the instrument.
=> Otherwise, the cords can become damaged, causing fire or
electric shock.
WARNING

5
For safety, always unplug the power cord from the outlet during
periods of extended non-use. Also, be sure to unplug the power
cord from the outlet during lightning storms.
=> Fire, electric shock, or malfunction can result.
Do not use batteries that are not specified for this instrument.
Also, do not use old and new batteries at the same time.
=> Explosion or leakage of the batteries can result, causing fire,
injury, or contamination of the surrounding area.
Check the polarity of the batteries (plus/minus orientation) before
installing them.
=> Incorrect orientation can result in explosion or leakage of the
batteries, causing fire, injury, or contamination of the surrounding
area.
Do not bring the instrument into areas with high humidity or large
amounts of dust.
=> Electric shock or malfunction can result.
Do not place the instrument on unstable or inclined surfaces.
=> Physical damage can result if the instrument tips over or falls to
the ground.
Do not place the instrument in areas with frequent vibration or
physical shock.
=> Physical damage can result if the instrument tips over or falls to
the ground.
Never place containers holding liquids or metallic objects on top of
the instrument.
=> If water or metal objects spill onto or enter the instrument, fire,
electric shock, or malfunction can result.
Do not allow water or condensation to contact the instrument.
=> Fire, electric shock, or malfunction can result.
If you detect any abnormal conditions such as smoke or unusual
odors or failure of the screen to display, this may indicate the
possibility of fire, electric shock, or malfunction. Immediately turn
OFF the power switch and remove the power plug from the outlet,
confirm that the abnormality ceases, and contact the dealer from
which you purchased the instrument. Do not attempt to repair the
instrument yourself, as doing so can be very dangerous.

6
If you accidentally drop or damage the instrument, turn OFF the
power switch, remove the power plug from the outlet, and contact
the dealer from which you purchased the instrument.
If the instrument experiences an abnormality, do not attempt to
repair the instrument yourself.
=> Electric shock or damage can result. Also, any repairs conducted
without authorized consent will not be covered by the product
warranty.
Never disassemble or rework the instrument.
=> Fire, electric shock, or malfunction can result.
The light buffer, optical connector, and other items that connect to
the light source can emit dangerous lasers. Take care not to injure
your eyes.
Do not place the instrument in direct sunlight or areas of high
temperatures.
=> The internal temperature of the instrument can rise, causing
malfunction.
Do not swing the instrument by its strap.
=> Damage or injury can result.
When placing the strap around your neck, take care not to choke or
strangle yourself.
When handling parts that open and close, such as when changing
the battery, take care not to pinch or injure your fingers.
CAUTION

7
6. Specifications
* AQ2160-01 Optical Powermeter Specifications
Wavelengths 850 nm, 1310 nm, 1550 nm
Ref. wavelength 1310 nm
Sensor element InGaAs (φ1 mm)
Compatible fibers SM (9/125 μm), GI (50/125 μm), GI (62.5/125 μm)
fiber
Input type SC or FC connector (specify when ordering)
Power range -70 dBm–+5 dBm
Noise level -60 dBm
Accuracy1±5%
Meas. value display 7-segment, 4-digit display with backlight
Displayed units dBm (absolute value)
Range Automatic
Meas. mode CW light
Meas. interval Approximately 330 ms
Resolution 0.01 (>-60 dBm), 0.1 (≤-60 dBm)
Backlight While Backlight key is depressed, and approx. five
seconds after it has been released.
Power save Power save function turns the power off automatically
if no key is pressed for ten minutes (function can be
turned OFF).
Battery check Low battery indicator
Resume function2Restores the settings active when the power was last
turned OFF.
Power supply Two AA batteries (alkaline dry cells or nickel
metal-hydride rechargeable batteries). AC adapter
(AC 100–240 V, 50/60 Hz, optional)3
Operating
environment
Operating temperature: 0–+50°C
Storage temperature: -25–+70°C
Relative humidity: 85% or less (no condensation)
Weatherproofing Conforms to JIS C 0920 (drip-proof) TYPE I and IEC
60529 Ipx1 (the drip test, when the optical and DC
connector caps are attached)
Dimensions and
weight
Approximately 152 (H) x 70 (W) x 32 (D) mm and
approximately. 270 g (incld. batteries)
Safety, EMC Safety: EN61010-1
(Out of conformance since December 1, 2010.)
EMC: EN61326-1 ClassB, Table2 (for use in
industrial locations)

8
1. Ta = 23 ± 5°C, at reference conditions (@ 1310 nm, -20 dBm).
2. Do not remove the batteries or unplug theAC adapter during operation.
Also, the Resume function is not guaranteed to work when the low battery
indicator is displayed.
3. When connecting to theAQ2160-01, use a temperature range of 0–+50 °C.
However, the safety standard for the AC adapter specifies an operational
temperature of 0–40°C. )
7. Periodic Calibration
Periodic calibration is an effective way to maintain the normal
functionality of the instrument over long periods of time, and to enable
quick identification of any problems. It is recommended to perform
calibration of the instrument once per year.

9
8. Names and Functions of Parts
■Power Key
●Turning the Power ON
When running on battery
power, press the key to
start up with the Power
save function enabled.
Hold the key down until the
Power save indicator goes
out to disable the function.
When powered by the AC
adapter, the instrument
starts up with Power save
disabled.
●Turning the Power OFF
Hold down the power key
until the display goes out.
■Backlight Key
●Turning ON
When OFF, press the key to turn it
ON for approximately five seconds.
Hold the key down to keep the light
ON indefinitely.
●Turning OFF
When the backlight is lit under battery
power, the light goes out
approximately five seconds after
releasing the key. When powered
by AC adapter, it stays ON until you
press the key again.
■Strap Attachment Hole
For attaching the neck
strap and connector cap
lead (one hole on each
side of the unit)
■Display
Displays measured
data and various
other items. (see
page 10)
■Optical Input Connector
For inputting optical power. Remove the
connector cap before making connections.
Supports both SC and FC optical connectors.
■AC Adapter Terminal
Open the cap to connect
the AC adapter （optional）
■ Wavelength Switching Key
Switches the measurement
wavelength.
Press repeatedly to scroll
through the following options:
850 nm→1310 nm→1550
nm→850 nm

10
nm
dBm
B
PWR SAVE
nm
nm
dBmdBm
BB
■Display Examples
●Measured Value Display
In the 1550 nm wavelength range,
displays -19.36 dBm.
●Overrange Error
If the optical power level being measured
exceeds the measurable range, the plus
sign value blinks indicating an overrange.
●Underrange Error
If the optical power level being measured
falls below the measurable range, the
minus sign value blinks indicating an
underrange.
nm
dBm
dBm
nm
■Power Save Setting
Displayed when the Power
save function is enabled
（see “Power key,” page 9）
Relatedkey: Power
■Wavelength Setting
Displays the set wavelength
(in nm). Related key:
wavelength switching
■Low Battery Indicator
Blinks when the remaining battery
charge is too low to provide sufficient
power for operation. If the low
battery indicator blinks, change the
batteries immediately.
■Measured Value/Error Display
Displays measured values and
over/underrange errors (see
Examples).
■Units
Displays the units of
the measured values
(dB)m
dBm
nm

11
9. Attaching the Neck Strap
■Attaching the Neck Strap
Attach the neck strap by
feeding it through the strap
attachment holes as shown
in the figure.
Do not swing the instrument by its strap. Damage or injury can result.
Also, when placing the strap around your neck, take care not to choke
or strangle yourself.
10. Operating Procedure
■Installing the Batteries
Turn the screw on the rear panel
with a coin or other flat object to
remove the cover, then install the
batteries.
Turning the screw locks/unlocks
the cover as shown in the figure.
Insert two AA batteries into the
holder following the polarity
markings. Always close the cover
after installing batteries.
If the low battery indicator blinks, you must change the batteries
immediately. The instrument runs for approximately forty hours
when using alkaline AA batteries (depending on operating
conditions).
＋
＋
－
－
Lock Unlock

12
■Turning ON the Power
●Starting Up in Power Save Mode
Press the key to start the
instrument with the power
save function ON.
●Starting Up without Power Save Mode
If you hold down the key until
the power save indicator
(PWR SAVE) disappears, the
instrument starts with the
power save function
disabled.
In Power save mode, the power turns OFF if no key is pressed for ten
minutes. However, Power save mode is disabled when using the AC
adapter.
●This instrument performs a zero adjustment when the power is
turned ON.
For low level measurement (-50 dBm or less), in order to cancel out
temperature changes and other effects, it is recommended to power
cycle the instrument before measurement to perform the zero
adjustment. The zero adjustment need not be performed while
shielded from light.
■Wavelength Setting
Set the wavelength of the light to
be measured. Press the
wavelength switching key
repeatedly to scroll through the
options as follows: 850 nm ->
1310 nm -> 1550 nm -> 850 nm.
The previous wavelength setting
is stored even when the power is
turned OFF (Resume function).
Power key
Wavelength

13
■Connecting the Optical Connector
Remove the optical connector cap and insert the connector firmly and
completely into the connector adapter. If the connection is not sound,
measurements will be inaccurate.
●Optical Connector
An SC connector and FC connector are available.
The desired connector is specified when ordering,
and cannot be changed.
Always use an optical connector that matches the
instrument. Also, clean the ends before making
connections.
●Optical Fiber
The following optical fibers are supported.
Single mode: SM (9/125 µm)
Multimode: GI (50/125 µm), GI (62.5/125 µm)
●Ferrule
Supports PC and FLAT polish.
Performance is not guaranteed with angled PC.
* Regarding support for APC (angled PC) fiber
There are many kinds of angled PC connector polishes.
Performance is not guaranteed with angled PC connectors because
the measured value depends on the shape of the tip. However, it
should be noted that with single mode fiber, measured values using an
eight-degree APC connector are nearly identical to those when using
a PC connector.
When using a bare fiber adapter, make sure that it does not protrude
beyond the ferrule end. Protruding fibers can damage the optical
input section resulting in incorrect measurements.
Incidence of excessive light outside of the optical power measuring
range can damage the sensor element.
When not using the instrument, attach the optical input connector cap
to protect the connector from dirt, grime, and other foreign particles.
Looking at the optical fiber, end of the optical connector, or other
items that connect to the light source can result in damage to the
eyes from lasers. Never peer into these sections.

14
■Reading the Measured Value
The figure on the right shows the
instrument started up in Power save
mode with the wavelength setting
set to 1310 nm. The measured
value displayed is -14.37 dBm.
■Using the Backlight Function
●Turning the Backlight ON
Press the key to turn ON the
backlight for five seconds. Or,
continue to hold down the key to
keep the backlight illuminated
indefinitely.
●Turning the Backlight OFF
When the backlight is lit under
battery power, the light goes out
approximately five seconds after
releasing the key. When power
by AC adapter, it stays ON until
you press the key again.
■Turning the Power OFF
Remove the optical connector and
attach the optical connector cap.
To turn the instrument OFF, hold
down the key until the LCD display
goes out.
Power key
nm
dBm
PWR SAVE
nm
dBm
PWR SAVE
Backlight Key

15
11. Handling Precautions
The following describes precautions that must be taken during use of the
instrument. This instrument utilizes ultra-precision optical components. In
order for performance to be guaranteed, please take note of the following.
■Precautions When Using the Instrument
1) Do not drop or expose the instrument to excessive physical shock.
The instrument is protected with plastic casing, but contains fragile
optical components.
2) Do not place the instrument in direct sunlight, or in high-temperature
or highly humid locations such as inside of a car for long periods of
time.
3) Do not bring the instrument close to strong electromagnetic waves.
Doing so can lead to malfunction.
4) Do not use the instrument and mobile phones simultaneously in the
same vicinity.
5) The instrument is portable and can be used outdoors under battery
power, but is not waterproof. Never operate the instrument in the
rain.
6) Never disassemble the instrument.
7) An SC connector and FC connector are available for the instrument.
Always use an optical connector that matches the instrument.
Forcibly attaching a connector can damage the optical input section.
8) Looking at the optical fiber, end of the optical connector, or other
items that connect to the light source can result in damage to the eyes
from lasers.
9) Do not use an optical connector with an angled ferrule. Doing so can
damage the optical input section.
10) Incidence of excessive light outside of the optical power measuring
range can damage the sensor element. Be aware that especially
with low duty, high-peak pulses, when the optical power is expressed
as an average the value appears low, but the instantaneous power
can be quite high.
11) If the optical connector attached to the optical input connector is
damaged, dirty, or otherwise compromised, the instrument will be
unable to perform as expected. At worst, this may cause damage to
the instrument’s optical connector.
12) When attaching the optical connector, take care not to damage the
optical input end.
13) When not using the instrument, attach the optical input connector cap
to protect the connector from dirt, grime, and other foreign particles.
14) If the optical input end or connector is soiled with dirt or grime, clean
the end with commercially available optical connector cleaner.

16
■Precautions When Using the Batteries
1) If the plus or minus terminal of the battery holder is dirty, contact with
the battery will be weakened, possibly causing the power to cut out. If
dirty, wipe the plus and minus terminals clean with a dry cloth.
2) Do not allow the batteries to come into contact with water (including
rain water and sea water). Also, do not apply strong physical shocks.
3) Shorting the plus and minus terminals of the batteries with metal or
other conductive objects causes a large current to flow that can
damage the batteries and emit heat. Take care not to short the
terminals when handling the batteries.
4) Disassembling the batteries or placing them in fire is extremely
dangerous and must never be attempted.
5) Do not discard spent batteries together with general household waste.
(unless your local laws permit doing so).
6) Check the polarity/orientation of the batteries carefully before inserting
them into the battery holder. Incorrectly oriented batteries can result in
damage to the instrument.
7) Remove the batteries during periods of extended non-use. Leakage
from batteries can occur, resulting in damage to the instrument.
8) The instrument does not perform battery recharging. Please use a
separate, dedicated charger for nickel metal-hydride rechargeable
batteries.
9) Always operate the instrument in a way that is appropriate for the type
of batteries you are using.
■Cautions When Using the AC Adapter
1) Use the AC adapter that came with the instrument, and the
country-specific power cable that was packaged together with the AC
adapter.
2) Insert the power cable firmly into the inlet on the AC adapter, and
connect a DC5V output cable firmly to the AC adapter terminal on the
instrument.
3) Never use an AC adapter or power cable other than the dedicated ones
available for use with this instrument, as damage can result.
4) Only use these items indoors. When connecting to the AQ2160-01,
use a temperature range of 0–+50 °C (however, the safety standard for
the AC adapter specifies an operational temperature of 0–40°C).

17
12. If You Suspect a Malfunction
The following should be checked if the instrument is not functioning as
expected.
■ The instrument doesn’t work even though the power is ON.
1) Are the correct batteries installed?
-> Use only AA alkaline dry or nickel metal-hydride rechargeable
batteries.
-> Check the polarity/orientation of the batteries.
2) Is one or both of the batteries spent?
-> Replace both batteries (at the same time).
Leakage can occur when using an old and new battery together, and
can result in damage to the instrument.)
3) Is the power cord for the AC adapter (optional) connected correctly?
4) Are you using the dedicated AC adapter that came with the instrument?
-> Never use an AC adapter or power cable other than the dedicated
one available for use with this instrument, as damage can result.
■Normal measured values are not displayed.
1) Does the instrument’s wavelength setting match the wavelength being
measured?
-> Edit the wavelength setting using the wavelength switching key.
2) Is the optical connector (optical fiber) attached correctly?
-> Check the connections. Insert the SC connector until it locks. For
FC connectors, fasten the attachment ring all the way.
If the connection is not sound, measurements will be inaccurate.
3) Are the ends of the optical connector fibers damaged or dirty?
-> Clean them with a dedicated optical connector cleaner. Using
fibers with damaged ends can result in erroneous measurement.
■When the instrument starts up, the backlight automatically blinks and
does not stop.
The instrument’s self-diagnostic function has detected an error.
-> Contact the dealer from which you purchased the instrument for
repairs.
Do not attempt to repair the instrument yourself, as doing so can be
very dangerous.

18
Outline drawing of the AQ2160-01 Optical Powermeter