Kingfisher KI 7340 Series Operating manual

OPERATION & MAINTENANCE GUIDE
KI 7340 Series
Two Way Test Set + ORL
KI 7740 Series
Two Way Loss Test Set

DECLARATION OF CONFORMITY
IN ACCORDANCE WITH ISO/IEC 17050:2004
Manufacturer’s Name: Kingfisher International Pty. Ltd.
Manufacturer’s Address: 720 Springvale Road, Mulgrave, Victoria 3170, Australia
hereby declares, that the products listed below
Product Name: Optical Loss Test Set
Model Number: KI 7340/7740 Series
Product Options: This declaration covers all options of the above product(s)
comply with the essential requirements of the applicable European Directives:
•Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC, amended by 93/68/EEC, and carries the CE marking accordingly
•Directive 2002/95/EC on restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)
•Directive 2002/96/EC on waste electrical and electronic equipment (WEEE). The equipment can be disposed of at any local retail shop
with WEEE collection point.
and conform to the following standards and specifications:
MIL-PRF-28800F: 1996 Performance specification-Test equipment for use with electrical and electronic equipment, general specification
IEC 60529: 2001/ EN 60529:1993+A1:2003 Degrees of protection provided by enclosures
IEC 61315:2005 Calibration of fiber-optic power meters
EMC Limit
IEC 61326:2002 / EN 61326-1:1997+A1:1998+A2:2001+A3:2003
IEC CISPR 11: 2004/ EN 55011:1998+A1:1999 Limits applicable to Group 1 Class B equipment
IEC CISPR 16-1:1999 Limits applicable to Class B equipment
IEC CISPR 16-2:1999 Limits applicable to Class B equipment
IEC 61000-3-2: 2005/EN 61000-3-2:2006
IEN 61000-3-3:2002/EN 61000-3-3:1995
IEC 61000-4-2:2001 / EN 61000-4-2:1995+A1:1998+A2:2001 4kV CD, 8kV AD
IEC 61000-4-3:2002/ EN 61000-4-3:2002 3V/m, 80-1000MHz
IEC 61000-4-4:2004/EN 61000-4-4:2004 1kV signal lines, 2kV power lines
IEC 61000-4-5:2005/EN 61000-4-5:2006 1kV line-line, 2kV line-ground
IEC 61000-4-6:2004/EN 61000-4-6:1996+A1:2001 3V, 0.15-80 MHz
IEC 61000-4-11:2004/EN 61000-4-11:2004 0.5 cycle/100%/each polarity
ICES-001: 2006 (Canada)
CFR 47 FCC Part 15, Subpart B (Exempted devices) (USA)
Safety
IEC 60825-1:2011 Safety of laser products-Equipment classification, requirements and user’s guide
IEC 60825-2:2011 Safety of laser products-Safety of optical fiber communication systems (OFCS)
CFR 21 part 1040.10 (USA) Performance standards for light-emitting products- Laser products
Supplemental Information:
The product was tested in a typical configuration with Kingfisher International test systems.
26 May 2016
Date
Bruce Robertson
Name
Technical Director
Title
For further information, please contact your local Kingfisher International sales office, agent or distributor.
Revision: G Issue Date: 26 May 2016

KI 734x/774x UM-12
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OPERATION MANUAL
KI7340C Series ORL and Two Way Loss Test Set
KI7740C Series Two Way Loss Test Set
Congratulations on your purchase of this equipment, engineered to
provide excellent performance, convenience and reliability. To get the
best use from your instrument and to ensure its safe operation, please
spend a few minutes to read this manual.
Made in Australia. International Patents Granted
© Copyright Kingfisher International Pty Ltd
12th Edition Oct 2018.

KI 734x/774x UM-12
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CONTENTS
Service and Support 4
Introduction and Applications 5
General Safety Summary 7
Light Source Safety Summary 9
Battery and External Power Operation 10
Optical Connector 11
Getting Started and Turning On 13
Autotest Overview 15
Patch-lead Test Using Loss Test Meter 17
Remote and Local Reference Methods 18
Measuring Two Way Loss and ORL in Autotest 20
Measuring One Way Loss in Autotest 22
Power Meter Manual Operation 23
Light Source Manual Operation 24
Return Loss Meter Manual Operation 25
Recording, Storing, Recalling Readings and
Clearing Memory 26
PC Interface and External Software 28
Care of your Instrument 29
Accuracy Considerations 30
Definition of Terms 34
Specifications 35
Ordering Information 39
Calibration and Maintenance 41
Performance Verification Tests 45
Quick Reference Guide 62
Disclaimer and Warranty 65
User Notes 66
PLEASE REFER TO THE CONTROL PANEL PICTURE IN THE QUICK REFERENCE GUIDE SECTION OF THIS MANUAL

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KI7340C SERIES ORL AND TWO WAY LOSS TEST SET KI7740C SERIES TWO WAY LOSS TEST SET

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SERVICE AND SUPPORT
Applications Support
Please visit www.kingfisherfiber.com to see our comprehensive
Application Notes written to support instrument users.
Look at www.kingfisherfiber.com to find distributor details from the
Contact Us section.
Our local agents are able to offer excellent applications advice in your
language and time zone.
Please visit our website on www.kingfisherfiber.com for a current list
of regional service centres.
Otherwise if you are having difficulties, please feel free to contact
[email protected] for applications support.
Instrument Service
Qualified personnel must perform adjustment, maintenance or repair
of this product. To obtain service, please contact your local Kingfisher
International distributor or our office in Australia:
If returning equipment to us for service or calibration, please download
and complete the Return Material Authorization Form located on the
Support page on our web site.
To avoid delays and minimise disruption for our customers, we offer a
fixed price repair service.
For the staff at our fully equipped service and calibration centre, it is their
pleasure to keep your equipment performing at its very best.
Tel: [phone]
Fax: [phone]
Email: [e-mail]

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INTRODUCTION AND APPLICATIONS
These instruments incorporate traceable Power Meter, multi
wavelength Light Source and Optical Return Loss Meter (KI7340C
Series only) in one unit and are the industry fastest bi-directional loss
testers. In addition to the usual light source and power meter functions,
KI7340C/7740C Series provide optimum performance for testing of
installed cable systems and components by automatic bi-directional
multi wavelength attenuation measurement in Autotest.
Two Way Loss Test Sets can also be used as tone generator and
detector. Instruments feature very high productivity and accuracy,
large memory and instant pass/fail indication for bi-directional testing.
Compact, robust, reliable and simple to operate, this is the ideal
equipment for field or laboratory use by installers, technicians and
engineers.
Typical applications:
•Attenuation testing
•System power testing
•Continuity testing with the test tone features
•Quality assurance and acceptance testing
•Telecom construction and maintenance, CATV, LAN and R&D
applications
•Optical Return Loss (ORL) testing (KI7340C Series only)
Both series have options for high performance single mode/
multimode fiber testing and are compatible with all other instruments
with Autotest mode.
A convenient menu-driven interface guides the user through
operational sequences with hidden keypad access to advanced
functions.
In addition, the KI7340C Series test sets feature zero warm up light
sources, over 22 calibrated CWDM/DWDM wavelengths and an
integrated ORL testing function.
The interchangeable optical connectors are protected by a snap on
cover and are easily disassembled for cleaning. A wide variety of
connector styles are available as an option.
The design of the instrument includes shock absorbing corners for
drop protection and tough polycarbonate housing. The latest materials
and methods have been used to produce an elegant, yet rugged
instrument.
These instruments feature very long battery life of 360 hours for the
meter, and 190 hours for the source. Alternatively, instruments can be
used with optional external power supply OPT103B or powered via
USB cable.
Automated testing using external PC software
KITS™reporting software allows real-time instrument control and data
download, and is easily customised to suit most languages and
reporting requirements. Real time display, data logging and label
printing functions are included. KITS™ enables merging of test results
from multiple instruments and supports bi-directional testing for one
way equipment using successive measurements.

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INTRODUCTION AND APPLICATIONS
Two Way Loss + ORL testing features
Two Way + ORL loss at both ends can be tested at up to 4
wavelengths in one operation, providing major operational savings.
The ORL function includes user selectable offset and residual
compensation functions, which are typically used in component test
applications.
The real time display update in this mode is unique, and typically offers
genuine time saving for users.
Optical Power Meter:
Superior measurement confidence is achieved with a unique Total
Uncertainty Specification, which covers the full temperature,
measurement and connector range. A NATA/ILAC traceable
calibration certificate is supplied.
Warm up period, range-changing delays and user dark current zeroing
all eliminated.
The sensitive optical tone detector displays the actual measured tone
frequency in Hz. If a standard tone is detected, the buzzer sounds,
which is useful for fiber identification and continuity testing.
Power stability testing can be performed using the max/min recording
function. The display can show dBm, dB and linear units, and can be
put on hold for convenient data recording.
Standard power meters work with fiber core diameter up to 200
micron, with both PC and APC polish connectors.
Various detector options include Indium Gallium Arsenide (InGaAs),
Silicon (Si) and various attenuated versions.
The InGaAs detector is the most common detector for general use.
InGaAs detectors give much improved absolute accuracy compared
to Ge detectors, which are excessively sensitive to wavelength
uncertainty and temperature above 1580 nm. This affects DWDM and
CWDM applications.
Power meter calibration options are available from 600 nm to 1650
nm, which cover all popular application wavelengths, including CWDM
calibrations from 1270nm to 1610nm in 20 nm increments. Power
range is from +27dBm to -70 dBm.
Optical Light Source:
Multi- wavelength sources have switchable wavelengths through one
port, which makes operation faster.
Laser sources at 1310/1390/1490/1550/1610/1625 are used for
testing single mode fiber systems.
LED sources at 850 / 1300 nm are used for testing multimode fiber
systems.
The 1300 nm LED can also perform short distance single mode
testing. Light source features re-connection repeatability of 0.1dB.
Combined with their excellent stability, this provides more accurate
measurement results.

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GENERAL SAFETY SUMMARY
The following safety signs and symbols specify general safety
precautions which must be observed during all phases of operation,
service and repair of this instrument. Failure to comply with these
precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture and intended use of the
instrument. Kingfisher International assumes no liability for the
customer’s failure to comply with these requirements.
Before operation, review the instrument and user manual for safety
instructions. You must follow these to ensure safe operation and to
maintain the instrument in safe condition.
WARNING!
The WARNING! sign denotes a hazard. It calls attention to a
procedure, practice or the like, which, if not correctly performed or
adhered to, could result in injury. Do not proceed beyond a
WARNING! sign until the indicated safety conditions are fully
understood and met.
CAUTION!
The CAUTION! sign denotes a hazard. It calls attention to an
operating procedure, or the like, which, if not correctly performed or
adhered to, could result in damage to or destruction of part, or all, of
the product. Do not proceed beyond a CAUTION! sign until the
indicated conditions are fully understood and met.
The apparatus will be marked with this symbol when it is necessary for
the user to refer to the instruction manual in order to protect the
apparatus against damage.
Initial Inspection
Inspect the shipping container for damage. If there is damage to the
container or cushioning, keep them until you have checked the
contents of the shipment for completeness and verified the instrument
both mechanically and electrically. If the contents are incomplete,
mechanical damage or defect is apparent, or if an instrument does not
pass the operator’s checks, notify the nearest Sales/Service Office.
To check instrument performance, please refer to Performance
Verification Tests section of this manual.
WARNING! You must return malfunctioning instrument to an
authorised Service Centre for repair and calibration.
!

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GENERAL SAFETY SUMMARY
Operating Environment
The range of Kingfisher equipment covered by this manual can be
operated at temperatures between -15 °C and +55 °C and at relative
humidity of <95%.
Storage & Shipment
The range of Kingfisher equipment covered by this manual can be
stored or shipped at temperatures between -25 °C and +70 °C and at
relative humidity of less than 95%. Protect the units from temperature
extremes that may cause condensation within it.
Safety
When using this equipment, optical safety precautions should be
observed commensurate with the maximum available source power,
since most of this power can also be coupled out of the instrument.
WARNING! Observe optical safety when using high power.
Optical safety requirements at high power levels MUST be observed
or eye damage is likely. Organisations and users operating optical
equipment with these power levels MUST determine and observe
relevant safety precautions, which are beyond the scope of this
manual.
Line Power Requirements
This equipment operates at line power, when applied to the optional
external power supply OPT103B.

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LIGHT SOURCE SAFETY SUMMARY
Laser and LED Safety Information
Laser Fabry-Perot or DFB semiconductor laser
Wavelength 1310/1390/1490/1550/1625 nm
LED Surface emitting semiconductor LED
Wavelength Part number specific
Max CW output power¹ 0.2 mW
Beam waist diameter 9 µm
Numerical aperture 0.1
Laser Class according to
IEC 60825-2 (2011) –International Class 1
21 CFR 1040.10 (2014) Class 1
Maximum permissible CW output power² at 1310nm
IEC 60825-2 (2011) - International 25.8mW
Maximum permissible CW output power² at 1550nm
IEC 60825-1 (2011) - International 10.2 mW
Maximum permissible CW output power² at 1310nm
21 CFR 1040.10 (2014) –USA 2 mW
Maximum permissible CW output power² at 1550nm
21 CFR 1040.10 (12014) –USA 8.1 mW
Note 1: Maximum CW output power is defined as the highest possible optical power
that the source can produce at its output connector. Refer to specification sheet for
actual operating power
Note 2: Maximum permissible CW output power is the highest optical power that is
permitted within the appropriate laser class. Refer to specification sheet for actual
operating power
WARNING!
Optical power levels in fiber optic systems can cause permanent eye
injury and damage to eyesight.
Never look into the end of an optical cable or connector, which might
be attached to an active source.
Do not enable a laser when there is no fiber attached to the optical
output connector.
Optical magnifying instruments (eg microscope) increase eye hazard.
Disconnect the source before using an optical magnifier.
The laser module has a built-in safety circuitry which will disable the
optical output in the case of a fault condition, however, this can not be
guaranteed. An equipment assurance program is recommended to
check for safe laser operation.

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BATTERY AND EXTERNAL POWER
KI7340/7740C Series instruments are powered by two 1.5V alkaline
‘C’ size batteries.
About 30 % capacity is obtained when using two 1.5V alkaline ‘AA’
batteries and supplied ‘AA’ to ‘C’ size battery adaptors or 50 %
capacity when using two 1.2V rechargeable NiMH ‘C’ size batteries.
Function
‘C’size battery run time in hours:
Optical Power Meter only
360
Source / Two Way tester / ORL
190 ( in Autotest )
When the batteries are low, a low-battery indicator is shown on the
display. At this stage, there is approximately enough energy for
another 10 hours of use.
To save energy, the instrument automatically turns off after 10 minutes
without operation.
To change the batteries, open the cover of the battery compartment at
the base of the instrument, remove the batteries and insert new ones.
For operation of the instrument by external power, use AC adaptor
OPT103B or connect to computer via USB cable.
Suitable external power packs are easily available and must meet the
following requirements:
•Comply with safety regulations and rated for local mains
supply voltage
•Regulated or unregulated DC output 6-12V at 300mA max
•Connection polarity:+ ve pin
Use of the external power supply disconnects the batteries as a safety
precaution, since accidental charging of alkaline cells is hazardous.
Rechargeable batteries must be removed for charging by an external
charger.
CAUTION!
Do not use lithium batteries or other batteries with a nominal voltage
greater than 1.8 V. The instrument may be damaged.
Protect our environment! Some batteries contain toxic heavy metals,
so please dispose of them by returning to a re-cycling centre. Batteries
purchased from Kingfisher agents can be returned to them for
appropriate disposal.

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OPTICAL CONNECTOR
To access the optical connectors, grasp a top corner of the instrument,
and pull off the cover. Do this on both sides of the instrument.
Each optical port is mounted on a swivel, which allows the connector
to be angled outwards for accessibility, and then pushed back and
covered with the snap cover to provide dirt and drop protection.
Different styles of standard and optional connector adaptors can be
easily fitted by the user.
The supplied standard connector adaptors have ceramic sleeves to
avoid connector metal dust contamination.
CAUTION! Do not use damaged or incompatible connector adaptors.
When not in use, keep the test ports and connectors covered. To
minimize connectors wear, instrument can be stored without removing
the test leads. Never touch connector tips with your fingers, since body
oils and dirt can impair its performance.
WARNING! Remove batteries before using a microscope to inspect
instrument connectors.
Power Meter port:
This port can be used with both PC and APC connector styles.
Bare fiber adaptors must achieve fiber eccentricity of ± 100 microns,
and an end tolerance of ± 300 microns relative to the ferrule end.
Preferred bare fiber adaptors consist of a connector with fiber retention
device or other end stop.
For regular work with bare fibers, it is preferable to use an alternative
arrangement such as a multimode pigtail with a v-groove or
mechanical splice.
CAUTION! Do not scratch the detector lens with glass fiber end when
using bare fiber adaptors, or the instrument will be permanently
damaged.

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OPTICAL CONNECTOR
Light Source /Two Way/ ORL port:
A Light Source is either PC or APC connector-specific. This is
determined when ordering the instrument, and can only be changed at
the factory.
CAUTION! The use of bare fiber adaptors with the source is not
recommended as permanent instrument damage will occur, and very
unstable measurements are likely.
How to clean the optical connectors
Always clean the mating connector tip and ferrule before mating, using
approved materials.
CAUTION! Never use abrasive cleaners or permanent connectors
damage may occur.
Power Meter port:
The glass power meter interface does not make contact with the
inserted connector-there is a slight air gap. Therefore, it will not wear,
and only needs occasional cleaning.
First remove interchangeable connector adaptor, then use a soft
brush, alcohol, air can or ‘Blu Tac‘ to clean glass interface.
Light Source / Two Way / ORL port:
WARNING! Disable source when cleaning optical interfaces.
To clean the interface without removing the adaptor, use a “stick” style
connector cleaner. This cleans both the adaptor and end face in one
operation.
Alternatively, first remove the interchangeable adaptor to access the
glass interface. Then blow away any dust or dirt with compressed air.
If this is not sufficient, then clean the interface by rubbing a lint-free
lens cloth over the surface using small circular movements.
.

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GETTING STARTED AND TURNING ON
KI7340C/7740C Series instruments can be used in one of the following
modes:
•Autotest
•Power Meter
•Light Source
•ORL Meter (KI7340C Series only)
Operation mode is selected by pressing corresponding button at the
bottom of the LCD.
Pull off instrument connector covers. To install a connector adaptor,
align the locating slot on the side of the through adaptor with that on
the instrument connector, and press it on.
To remove an adaptor, press the release button on the back of the
instrument and then pull off the adaptor. It is easier to pull off the
adaptor with a test lead in place, since this gives better grip.
Install the batteries, or plug in external power into the socket at the top
of the instrument or connect instrument to the computer.
To switch on the instruments for permanent operation, press and hold
[POWER] for 3 seconds until ‘Perm’ is displayed. The display will
briefly show firmware version. To view all display segments during
instrument turn-on, hold down the first button on the left at the bottom
of the display. To turn the instrument off, press [POWER] again for 2
seconds. If the battery is low, this will be indicated with a battery
symbol on the display.
Should the instrument fail to turn on, the microprocessor may need re-
booting. To do this, remove the batteries and any other external power
for at least 40 seconds.
Note that hidden keypad is accessed by lifting up the hinged display
cover.
To backlight the display temporarily, press light button ☼(second on
the right, bottom row on the hidden keypad). To illuminate
continuously, press and hold down light button for 3 seconds.
To disable or enable the buzzer, press and hold down [ ] on hidden
keypad, for 3 seconds.
To add the carry strap, slip the end of the strap through the slit on the
curved section at the back of the instrument, and secure the buckle.
Power Meter port:
This port is on the right hand side of the instrument.
After turn-on, Power Meter will perform a self-calibration sequence,
and then display absolute power in dBm at the previously set
wavelength. If ‘HI’ or ‘LO’ are displayed, the input is out of range.
The Power Meter requires no warm up, and no user adjustment of dark
current to achieve its specified performance.
Light Source / Two Way / ORL port:
This port is on the left hand side of the instrument.

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GETTING STARTED AND TURNING ON
After instrument turn-on, press [Source] to enable Light Source or
[Return Loss] to enable Return Loss Meter (KI7340C Series only).
On the KI7740C Series instruments, the light source may require a
warm up period at the set wavelength for 15 min to achieve specified
stability. On the KI7340C Series instruments, the specified stability is
achieved with no warm up period.

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AUTOTEST OVERVIEW
Autotest mode is used to perform automated loss testing at all source
wavelengths:
•bi-directional loss testing with average loss displayed in real
time and pass/ fail test function, requires two matching
instruments.
•single direction loss testing, can be achieved with a single
instrument or two instruments as a combination of light source
and power meter. Alternatively, two loss test sets are typically
used for simultaneous measurements on two fibers.
Autotest remains synchronised for about 8 seconds after
disconnection, so the user can change optical connections without re-
starting Autotest each time thus achieving productivity gains. Autotest
reduces source warm up drift and battery consumption compared to
manual operation.
For the KI7340C Series instruments, ORL testing is tightly integrated;
ORL Zero Function and User Calibration Mode (UCAL) can be set in
Autotest mode.
To realise the full benefit of Autotest, please use the KITS™ software
to achieve real-time data acquisition to facilitate acceptance testing
and reporting in the field. Free KITS™software available on our
website includes a comprehensive on-line manual with full operating
sequences.
Instruments compatibility
Any Kingfisher equipment featuring Autotest is compatible, e.g. any
Autotest source / loss test set can be used with any Autotest meter for
one direction loss testing as long as both instruments have matching
wavelengths. A pair of identical Two Way Loss Test Sets will provide
the most benefit for the user, allowing to measure bi-directional
average loss at multiple wavelengths and ORL at each end (KI 7340
Series only).
Initiating Autotest operation:
Turn on the instrument, connect light source to the power meter with
test lead and press [AUTOTEST]. The meter automatically sets to the
correct wavelengths and displays the absolute power in dBm, with the
operating wavelengths shown at the top right.
In Autotest, the display rotates through all source wavelengths. To
lock a display, press –side on [-/+]. In this mode, “nm” will be
flashing to show that the selected wavelength is locked. The nominal
source power transmitted from the source is on the left hand side of
the display. Pressing [Abs/Rel] will make meter to display measured
optical power in dB R with the reference value shown on the left side.
To exit Autotest, press [MENU] or disconnect patch lead for more
than 8 seconds.

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AUTOTEST OVERVIEW
Wavelength selection mode
If the required regular testing uses fewer wavelengths than the
instrument has available, then it may be convenient to reduce the
number of active Autotest wavelengths. For example, instead of the
source rotating through 1310 / 1490 / 1550 / 1610 nm, it can be set to
test at 1310/1550 nm only.
To switch wavelengths on/off:
•press [SOURCE] and then [-/+] to select wavelength.
•to check whether selected wavelength is switched on/off,
press right hand button below the screen, its status will be
indicated as ‘IN’ or ‘OUT’.
•on hidden keypad, press [ ] till ‘Shift’ symbol comes on LCD,
then right hand button below the screen to change status of
selected wavelength.
Autotest operates only with wavelengths selected as ‘IN’.
Selected settings will be retained at the next turn on.
User to user communication
This is only applicable when a pair of Two Way Loss Test Sets are
used. Display update for both instruments can be started or stopped
from either instrument by pressing [HOLD] button, which also activates
the buzzer at each end. Once on, ‘HOLD’ symbol will flash on LCD. It
allows handy communication method between two users, so they can
synchronise while working through successive fibers, see related
event sequence, ➊~ ➍below,
@ “near-end”
of DUT
@ “far-end”of
DUT
Practical uses in the field
➊Press
[HOLD] button
on unit.
➋Unit beeps
twice, ‘HOLD’
symbol blinks.
After recording or saving test data
for existing fiber, “near-end” user
do this to signal “far-end” user to
move on to next fiber.
➍Unit beeps
once, ‘HOLD’
symbol stops
blinking.
➌Press
[HOLD] button
on unit.
After reconnecting meter with the
next fiber, “far-end”user do this to
signal “near-end”user to record or
save test data.
This communication function is also linked with KITS™software, so
that the far end user knows when a reading has been saved in KITS™,
and the near end user knows when the far end user has moved to the
next fiber, and so is ready for the next reading. Refer to KITSuser
manual for detailed operating instructions.
Note: all operation and data acquisition can be controlled from one
end only.

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Patch-lead Test Using Loss Test Meter
This section illustrates the instruction to use Loss Test Meter to
perform simple IL (Insertion Loss) measurement on a patch-lead.
1. Connect a reference patch-lead (test grade) between the light
source and power meter ports of Loss Test Meter as shown
below;
2. Switch on the Loss Test Meter and press [AUTOTEST].
3. Set measurement reference: press [Abs/Rel] to enter dB R,
then press and hold [Set Ref] for 3 seconds until beeps stop
4. Remove reference patch-lead connection at power meter port,
connect reference patch-lead to the patch-lead to be tested via
a thru-connector adapter, connect the free end of patch-lead
to be tested to power meter port
5. Read IL (in dB R mode) of the respective wavelengths
displayed on instrument.
Reference
patch-lead
Reference patch-lead
Thru-connector
adapter
Patch-lead to be tested

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REMOTE AND LOCAL REFERENCE METHODS
Instruments should be referenced prior to making loss measurements.
KI7340C/7740C Series support both local and remote reference
methods.
The remote reference method is useful for long distance testing.
Although this method has slightly lower accuracy compared to local
referencing, it is quite adequate for general link loss testing.
The local reference method provides high accuracy and is very
efficient for short distance loss testing, where both ends of the system
can be accessed readily by one meter, eg. patch leads testing.
Note: when setting the reference value, use test leads with a similar
fiber type to the system under test. This is particularly important for
multimode systems. Also, connector loss between the patch lead and
source port will be added to the final loss measurement, so care
should be taken to use test leads in good condition with clean
connectors.
Remote Reference method
For two or one direction testing involving two instruments, referencing
should be independently performed on both Loss Test Sets. The
following will set reference at all wavelengths:
•Connect the Light Source /Two Way /ORL port to the Power
Meter port of the same instrument.
•Select [POWER], [Autotest], [Abs/Rel] and then press [Set
Ref] for 3 seconds. Meters will display ‘BUSY’ and then 0.00
dB R.
Figure 1. Remote reference set up
Local Reference method
Referencing is performed on one of the instruments, which will set
reference at all wavelengths on both Loss Test Sets:
•Connect the Light Source /Two Way /ORL ports of the
instruments.
•Select [POWER], [Autotest], [Abs/Rel] and press [Set Ref]
for 3 seconds. Meters will display ‘BUSY’ and then 0.00 dB
R.