Hioki 3662-20 User manual

Printed on recycled paper Printed in Japan
Edited and published by Hioki E.E. Corporation
Technical Support Section
• All reasonable care has been taken in the production of this manual,
but if you find any points which are unclear or in error, please contact
your supplier or the International Sales and Marketing Department at
Hioki headquarters.
• In the interests of product development, the contents of this manual are
subject to revision without prior notice.
• The content of this manual is protected by copyright. No reproduction,
duplication or modification of the content is permitted without the
authorization of Hioki E.E. Corporation.
HEAD OFFICE
81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] FAX [phone]
E-mail: [email protected] URL http://www.hioki.com/
(International Sales and Marketing Department)
HIOKI USA CORPORATION
6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] FAX [phone]
3663-20
LASER LIGHT SOURCE
3662-20
Instruction Manual
December 2009 Revised edition 5 3662A981-05 09-12H

i
Contents
Introduction ............................................................. 1
Inspection ............................................................... 1
Safety Notes ........................................................... 2
Usage Notes ........................................................... 4
Chapter 1 Overview 7
1.1 Product Overview ................................... 7
1.2 Features .................................................. 7
1.3 Parts Names and Functions ................... 8
Chapter 2 Measurement Procedures 11
2.1 Connecting Connectors ........................ 11
2.1.1 Connecting FC-Type Connector ....... 12
2.1.2 Connecting SC-Type Connector ......13
2.2 Turning ON/OFF Power ........................ 14
2.3 Output Modulation ................................15
Chapter 3 Specifications 17
3.1 Optical Output Specifications ................17
3.2 General Specifications ..........................18

ii
Chapter 4 Maintenace and Service 19
4.1 Battery Replacement .............................19
4.2 Attaching/Detaching Connector Adapter ..21
4.3 Attaching the Strap ................................23
4.4 Cleaning ................................................24
4.4.1 Cleaning the Product .........................24
4.4.2 Cleaning Optical Output Terminal .....24
4.4.3 Cleaning Cable Connector ................26
4.5 Service ..................................................27
Chapter 5 Appendix 29
5.1 Options ..................................................29

1
Thank you for purchasing the HIOKI “3662-20,
3663-20 LASER LIGHT SOURCE”. To obtain max-
imum performance from the product, please read
this manual first, and keep it handy for future refer-
ence.
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
Carrying case....................................................1
LR6 alkaline battery..........................................2
Strap .................................................................1
Instruction manual ............................................1
Before using the product
Before using the product the first time, verify that it
operates normally to ensure that the no damage
occurred during storage or shipping. If you find any
damage, contact your dealer or Hioki representa-
tive.
Introduction
Inspection

2
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.

3
Laser Safety Information
The following symbols in this manual indicate the
relative importance of cautions and warnings.
Other Symbols
The 3662-20 and 3663-20 LASER LIGHT
SOURCEs are both Class 1 laser products
conforming to IEC60825-1, EN60825-1.
CLASS 1 LASER PRODUCT
FDA (CDRH)
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 inserious 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

4
Follow these precautions to ensure safe operation
and to obtain the full benefits of the various func-
tions.
Usage Notes
A laser beam is output from the laser output
connector during operation. The laser beam
is invisible. To prevent eye damage, do not
look directly into the connector or look at it
through a magnifying glass while the power
is on.

5
• 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 laser output connec-
tor ferrule 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
optical output connector ferrule requires meticu-
lous care. If there is dust in the interface or a
scratch on the optical output connector ferrule,
the 3662-20/3663-20 may not satisfy perfor-
mance specifications.
Direct
sunlight
High temperature
High humidity
Dust
• After use, always turn OFF the power.
• Be sure to replace the cap to protect the device
from dust when the 3662-20/3663-20 is not in
use.
• The Battery replacement indicator appears when
battery voltage becomes low. Replace the batter-
ies 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.

6
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).

7
1.1 Product Overview
The 3662-20/3663-20 LASER LIGHT SOURCE is
a Class 1 laser source used to measure the optical
loss of optical fiber cables. The laser source is
designed to be used with an optical power meter.
The laser source is available in two output wave-
lengths: 1,550 nm (3662-20) and 1,310 nm (3663-
20).
Output Modulation (CHOP)
This function modulates a laser output (CHOP
mode, duty ratio of 50%). The modulation fre-
quency may be selected from among the following
options: continuous wave (CW), 270 Hz, 1 kHz,
and 2 kHz.
Overview Chapter 1
1.1 Product Overview
1.2 Features

1.3 Parts Names and Functions
8
1.3 Parts Names and Functions
Front
(The figure shows the 3662-20.)
Connector
adapter
Laseroutput
indicator
Battery re-
placement
indicator
Power Switch Output
Modula-
tion Switch
Cap
The names of the parts and the functions are the
same for the 3663-20.

9
1.3 Parts Names and Functions
Connector
adapter This is attached to the laser output connec- tor ferrule. Use the FC type or SC type
depending on the connector type of the
cable to be connected (optional).
Laser output
indicator When a laser beam is output, this indicator lights steadily when CW is selected with the
output modulation switch and blinks when a
modulated beam (270 Hz, 1 kHz, or 2 kHz)
is selected.
Battery
replacement
indicator
Blinks when the battery is low
Power Switch Turns power ON/OFF to the 3662-20/3663-
20
Output
Modulation Switch Selects CW, 270 Hz, 1 kHz, or 2 kHz
Cap Protects the laser output connector and the
connector adapter from dust and damage.
Be sure to replace when the 3662-20/3663-
20 is not in use.

1.3 Parts Names and Functions
10
Rear
Setscrew
Setscrew to fasten the
battery cover
Battery cover
Cover for the battery
4.1 "Battery Replacement"
(21 page)
Upper
Laser output connector ferrule
Connector ferrule for laser beam
output

11
2.1 Connecting Connectors
Measurement
Procedures Chapter 2
2.1 Connecting Connectors
• A laser beam is output from the laser output
connector ferrule during operation. The laser
beam is invisible. To prevent eye damage, do
not look directly into the connector or look at it
through a magnifying glass while the power is
on.
• Make sure that the mating portions are free of
dust or other foreign matter when connecting a
optical fiber cable to the 3662-20/3663-20. In
particular, the end face (ferrule) requires meticu-
lous care. If there is dust in the interface or a
scratch on the end face, the measurement may
not be accurate.
Always clean the optical connector end face
(ferrule) of the optical fiber cable before
connecting.

2.1 Connecting Connectors
12
2.1.1 Connecting FC-Type Connector
1. Insert the end face (ferrule) of the optical fiber
cable into the connector adapter on the 3662-
20/3663-20.
Make sure that the protrusion of the cable con-
nector fits into the hole of the connector adapter.
2. Rotate the knurled nut (connecting nut) to
tighten.
Optical fiber cable 3662-20（3663-20）
1
2

13
2.1 Connecting Connectors
2.1.2 Connecting SC-Type Connector
Insert the end face (ferrule) of the optical fiber
cable into the connector adapter on the 3662-20/
3663-20.
Make sure that the protrusion of the cable connec-
tor fits into the hole of the connector adapter.
9735/9736/9737 OPTICAL FIBER CABLE
Specifications
3662-20（3663-20）
Optical fiber cable
The 9735, 9736, and 9737 (optional) are optical
fiber cables with an ordinary optical connector.
(They are not equipped with a master connector.)
Cable 1.3 μm-band single-mode optical
fiber cable
Connection
loss 0.5 dB or less
Return loss 45.0 dB or more
Minimum
bending
radius
30 mm (Do not allow to remain
bent for a long time.)

2.2 Turning ON/OFF Power
14
Power ONTurn on the power switch.
The laser output indicator will light up or start blink-
ing and the laser output connector will output a
laser beam.
Power OFF
Turn off the power switch.
2.2 Turning ON/OFF Power
If the battery replacement indicator is blinking
when power is turned on, the battery is running
low. Replace with a new battery.
4.1 "Battery Replacement" (21 page)

15
2.3 Output Modulation
The laser output may be selected between a con-
tinuous wave (CW) and a 270 Hz, 1 kHz, or 2 kHz
modulated wave (CHOP). The laser output indica-
tor stays on when it is a continuous wave. The
indicator blinks when it is a modulated.
2.3 Output Modulation
Continuous
wave Continuous wave (CW) The laser output indicator stays on.
270Hz/
1kHz/2kHz Duty ratio of 50% Modulated beam (CHOP) at the
displayed frequency
The laser output indicator blinks.
(The figure shows the 3662-20.)
Laser output
indicator
Output
Modulation
Switch
The names of the parts and the functions are the
same for the 3663-20.

2.3 Output Modulation
16