Hioki 3661-20 User manual

INSTRUCTION MANUAL
OPTICAL POWER METER
3661-20

i
Contents
Contents
Introduction ............................................................. 1
Inspection ............................................................... 2
Safety Notes ........................................................... 3
Usage Notes ........................................................... 6
Chapter 1 Overview 11
1.1 Product Overview ................................. 11
1.2 Features ................................................ 12
1.3 Parts Names and Functions ................. 13
Chapter 2 Measurement Preparations 17
2.1 Connecting Connectors ........................ 17
2.1.1 Connecting FC-Type Connector ..... 18
2.1.2 Connecting SC-Type Connector ..... 19
2.2 Turning ON/OFF Power ........................ 20
2.3 Measurement Wavelength Programming 21
Chapter 3 Measurement 23
3.1 Optical Power Measurement ................ 23
3.2 Optical Loss Measurement ................... 25
3.2.1 Saving Reference Value ................. 25
3.2.2 Optical Loss Measurement ............. 28
Chapter 4 Saving/Deleting Measurement
Data (Memory Function) 31
4.1 Storing Measurement Data ................... 31
4.2 Viewing Stored Measurement Data ...... 33
4.3 Deleting All Measurement Data ............ 34

Contents
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Chapter 5 Using the Supplied Software35
5.1 Installation .............................................35
5.1.1 Installing Driver ................................36
5.1.2 Installing Application Software .........46
5.2 Connecting the Meter to a PC ...............49
5.3 Transferring Measurement Data ...........52
5.4 Erasing Measurement Data ...................54
5.5 Programming Measurement Wavelengths . 55
Chapter 6 Specifications 59
6.1 Measurement Specifications .................59
6.2 General Specifications ..........................62
Chapter 7 Maintenance and Service 63
7.1 Battery Replacement .............................63
7.2 Attaching/Detaching Connector Adapter . 65
7.3 Attaching the Strap ................................66
7.4 Cleaning ................................................67
7.4.1 Cleaning the Product .......................67
7.4.2 Cleaning Detector Window ..............67
7.4.3 Cleaning Cable Connector ...............68
7.5 Error Indication ......................................70
7.6 System Reset ........................................71
7.7 Service ..................................................72
Chapter 8 Appendix 73
8.1 Explanations ..........................................73
8.2 Options ..................................................74

1
Thank you for purchasing the HIOKI “3661-20
OPTICAL POWER METER”. To obtain maximum
performance from the product, please read this
manual first, and keep it handy for future refer-
ence.
• Windows is a registered trademark of Microsoft
Corporation.
• Excel is a registered trademark of Microsoft Cor-
poration.
Introduction

2
When you receive the product, inspect it carefully
to ensure that no damage occurred during ship-
ping. In particular, check the accessories, panel
switches, and connectors. If damage is evident, or
if it fails to operate according to the specifications,
contact your dealer or Hioki representative.
Accessories
3853 CARRYING CASE .................................. 1
CD-R of application software ........................... 1
LR6 alkaline battery ......................................... 4
USB cable (1 m)............................................... 1
Strap ................................................................ 1
Instruction manual............................................ 1
Before using the product
• Before using the product, make sure that the
insulation on the cable is undamaged and that no
bare conductors are improperly exposed. Using
the product in such conditions could cause an
electric shock, so contact your dealer or Hioki
representative for repair.
• Before using the product the first time, verify that
it operates normally to ensure that the no dam-
age occurred during storage or shipping. If you
find any damage, contact your dealer or Hioki
representative.
Inspection

3
This manual contains information and warnings
essential for safe operation of the product and for
maintaining it in safe operating condition. Before
using the product, be sure to carefully read the fol-
lowing safety notes.
Safety Symbols
Safety Notes
This product is designed to conform to IEC
61010 Safety Standards, and has been thor-
oughly tested for safety prior to shipment.
However, mishandling during use could
result in injury or death, as well as damage to
the product. Be certain that you understand
the instructions and precautions in the man-
ual before use. We disclaim any responsibil-
ity for accidents or injuries not resulting
directly from product defects.
In the manual, the symbol indicates particu-
larly important information that the user should
read before using the product.
The symbol printed on the product indicates
that the user should refer to a corresponding topic
in the manual (marked with the symbol) before
using the relevant function.

4
The following symbols in this manual indicate the
relative importance of cautions and warnings.
Other Symbols
Indicates that incorrect operation presents an ex-
treme hazard that could result in serious injury or
death to the user.
Indicates that incorrect operation presents a sig-
nificant hazard that could result in serious injury or
death to the user.
Indicates that incorrect operation presents a pos-
sibility of injury to the user or damage to the prod-
uct.
Advisory items related to performance or correct
operation of the product.
Indicates the prohibited action
❖Indicates the reference

5
Measurement categories (Overvoltage catego-
ries)
To ensure safe operation of measurement instru-
ments, IEC 61010 establishes safety standards for
various electrical environments, categorized as
CAT I to CAT IV, and called measurement catego-
ries. These are defined as follows.
Higher-numbered categories correspond to electrical
environments with greater momentary energy. So a
measurement device designed for CAT III environ-
ments can endure greater momentary energy than a
device designed for CAT II.
Using a measurement instrument in an environment
designated with a higher-numbered category than
that for which the instrument is rated could result in a
severe accident, and must be carefully avoided.
Never use a CAT I measuring instrument in CAT II,
III, or IV environments.
CAT I Secondary electrical circuits connected to an
AC electrical outlet through a transformer or
similar device.
CAT II Primary electrical circuits in equipment con-
nected to an AC electrical outlet by a power cord
(portable tools, household appliances, etc.)
CAT III
Primary electrical circuits of heavy equipment
(fixed installations) connected directly to the
distribution panel, and feeders from the distribu-
tion panel to outlets.
CAT IV The circuit from the service drop to the service
entrance, and to the power meter and primary
overcurrent protection device (distribution panel).

6
The measurement categories comply with the Over-
voltage Categories of the IEC60664 Standards.

7
Follow these precautions to ensure safe operation
and to obtain the full benefits of the various func-
tions.
Usage Notes
• When cleaning the connector of a optical
fiber cable, never look directly into the end
of the optical fiber cable or observe it
through a magnifying glass if the cable is
connected to an operating optical output
device as this can lead to eye damage or
visual impediment.
• To avoid a shock hazard, disconnect the
USB cable before replacing the batteries.

8
• Do not store or use the product where it could
be exposed to direct sunlight, high temperature
or humidity, or condensation. Under such condi-
tions, the product may be damaged and insula-
tion may deteriorate so that it no longer meets
specifications.
• To avoid damage to the product, do not allow
the product to get wet, and do not use it when
your hands are wet.
• Do not use the product where it may be exposed
to corrosive or combustible gases. The product
may be damaged.
• To avoid damage to the product, protect it from
vibration or shock during transport and handling,
and be especially careful to avoid dropping.
• The mating portions of the detector and of the
connector adapter are high-precision machined
parts. Make sure that these portions are free of
dust or other foreign matter when connecting
them. In particular, the detector window requires
meticulous care. If there is dust in the interface
or a scratch on the detector window, the meter
may not satisfy performance specifications.
Direct
sunlight
High temperatur
e
High humidity
Dust
• After use, always turn OFF the power.
• Be sure to replace the cap to protect the device
from dust when the meter is not in use.
• The “ ” indicator appears when battery voltage
becomes low. Replace the batteries as soon as
possible.
• Use the specified battery (LR6 alkaline battery)
only. Other batteries (manganese batteries, for
example) run out more quickly than alkaline bat-
teries.

9
Handling Optical Fiber Cable
Follow the precautions below to prevent damage
to the optical fiber cables.
• Do not insert at an angle.
• Do not bend the cable at the neck of the con-
nector.
• Do not bend or twist.
• Do not pull forcefully.
• Do not allow cable to kink.
• Do not touch the end face (ferrule).

10
Care and handling of CD-R
• Always hold the disc by the edges, so as not to
make fingerprints on the label side or scratch
the printing.
• Never touch the recorded side of the disc. Do
not place the disc directly on anything hard.
• Do not wet the disc with volatile alcohol or water,
as there is a possibility of the label printing dis-
appearing.
• To write on the disc label surface, use a spirit-
based felt pen. Do not use a ball-point pen or
hard-tipped pen, because there is a danger of
scratching the surface and corrupting the data.
Do not use adhesive labels.
• Do not expose the disc directly to the sun's rays,
or keep it in conditions of high temperature or
humidity, as there is a danger of warping, with
consequent loss of data.
• To remove dirt, dust, or fingerprints from the
disc, wipe with a dry cloth, or use a CD cleaner.
Always wipe radially from the inside to the out-
side, and do no wipe with circular movements.
Never use abrasives or solvent cleaners.
• Hioki shall not be held liable for any problems
with a computer system that arises from the use
of this CD-R, or for any problem related to the
purchase of a Hioki product.

11
1.1 Product Overview
The 3661-20 OPTICAL POWER METER is an
optical power measuring instrument for optical
fiber cables. The meter has two measurement
modes: optical-power measurement mode and
optical-loss measurement mode. In optical-loss
measurement mode, the meter calculates optical
loss by using the measurement and the reference
value stored in the memory.
Memory functions and a USB interface are pro-
vided so that saved measurement values can be
transferred to a PC using the supplied software.
Overview Chapter 1
1.1 Product Overview

1.2 Features
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Two Measurement Modes
(Optical power measurement mode)
Measures the optical power of the cable con-
nected to the meter.
(Optical loss measurement mode)
Stores a reference measurement in advance, then
takes a measurement and calculates optical loss
from the measurement and the reference.
Measurement wavelengths are program-
mable in 5 nm steps
Using the supplied software, practically any wave-
length can be programmed for measurement in 5
nm steps. Up to eight programmed wavelengths
are stored in internal memory, and optical power
can be measured at each stored wavelength.
Supports Two Types of Optical Connectors
Supports both FC and SC type optical connectors;
use an appropriate connector adapter (a second
adapter is optional).
Memory Function
Saves measurements in the built-in memory; up to
1000 measurements per programmed measure-
ment wavelength can be stored.
Transferring Data to PC
The provided USB interface enables saved data to
be transferred to a PC using the supplied software.
Auto Power Save Function
If there is no key operation for more than approxi-
mately ten minutes, the power of the meter is auto-
matically turned off. This prevents the meter from
being left on unintentionally and minimizes battery
consumption.
1.2 Features

13
1.3 Parts Names and Functions
1.3 Parts Names and Functions
Front
Connector
adapter
Cap
Detector
Control keys
Connector
Adapter
Attach the connector adapter to the detector.
Choose the FC or SC type according to the
type of cable connector to be connected (a
second adapter is optional).
Detector Receives an optical signal.
Cap
Protects and dust-proofs the detector and
the connector adapter.
Be sure to replace the cap when the meter
is not in use.

1.3 Parts Names and Functions
14
PWR
(Power switch)
Turns the power of the meter on and off.
Power ON: Hold down the key for approxi-
mately two seconds to turn the power on. If it
is depressed for approximately five seconds,
the auto power save function is disabled.
Power OFF: Hold down the key for approxi-
mately one second to turn the power off.
λ
(Wavelength
select)
Selects the measurement wavelength.
The measurement wavelength setting changes
as shown below each time the key is pressed.
1310 nm→1550 nm→850 nm →1310 nm →..
DISPLAY
POWER/LOSS
Selects optical power measurement mode or
optical loss measurement mode.
DISPLAY
MEMORY/REF
• Optical power measurement mode
Allows the memory data to be displayed.
• Optical loss measurement mode
Allows either the memory data or reference
value to be displayed.
SET REF
Hold down the key for approximately three
seconds to store the optical power measure-
ment as a reference value.
ADDRESS Press this key while the memory data is dis-
played to change the memory address.
SAVE DATA
Press this key while the memory data is dis-
played to store the measurement. By holding
down this key while turning the power ON, all
data stored in memory are deleted.
Control Keys

15
1.3 Parts Names and Functions
Display (LCD)
Battery
Auto power save indicator
Optical power/loss
Measurement
Memory address
Reference
wavelength
indicator
Memory data
Optical Power/
Loss
Display the measurement mode.
POWER: Optical power measurement mode
LOSS : Optical loss measurement mode
Auto Power Save
Indicator
Lights when the auto power save function is
enabled.
If there is no key operation for more than
approximately ten minutes, the power of
the meter is automatically turned off. To
disable the function, hold down the power
switch key for approximately five seconds
when turning on the power.
Battery Indicator Lights when the charge level in the battery
is low.
Measurement
Wavelength Displays the measurement wavelength.
Reference
Displays the stored reference value.
Stores one reference value for every wave-
length.
Memory Data Displays the measurement stored in the
memory with the specified address.
Memory Address Displays the memory address.

1.3 Parts Names and Functions
16
Setscrew
Setscrew to fasten the
battery cover
Battery cover
Cover for the battery
7.1 "Battery Replacement"
(63 page)
Rear
Lower
Upper
USB connection terminal
Terminal to connect a USB
cable.