FM 1318/FM1318C

Optical Power Meter

OPERATINGINSTRUCTIONS

Wilcom

FM 1318 / FM1318C Optical Power MeterOperating Instructions

813-267-002August 2006

Copyright (c) 2006 WilcomAll Rights reserved

Wilcom reserves the right to make changes to the material contained hereinwithout notice and shall not be responsible for any damages caused by relianceon the material presented.

This document may not be copied or duplicated in part or in whole for any purposewithout the express written permission of Wilcom.

ST is a trademark of AT&T.Decnet is a trademark of DEC.NEC D4 is a trademark of NEC.

PageGeneral ................................................................. 1Features ................................................................ 2Applications .......................................................... 3Safety .................................................................... 4 Precautions ........................................................ 4LCD Display ........................................................ 5Front Panel Operating Controls............................. 6Operating Controls ................................................ 7Operation ............................................................. 9 Optical Power Verification............................... 9 Optical Loss Measurement .............................. 11 Store Loss Measurement .................................. 11Maintenance ......................................................... 13 Battery Replacement ......................................... 13 Optional Battery Charger .................................. 13General Care ......................................................... 14Customer Service .................................................. 15 Service & Repair .............................................. 15 Ordering Information ......................................... 16Specifications ....................................................... 17Wilcom Fiber Optic Products................................ 18Warranty ............................................................... 19

Figures

1. FM1318 / FM1318C Front Panel...................... 62. Optical Power Verification ................................ 93. Optical Loss Measurement ................................ 12

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Contents

General

Model FM1318 / FM1318C

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General

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Thank you for purchasing a Wilcom FM1318 /FM1318C Optical Power Meter. The lightweight,hand held Optical Power Meter is a precision meterin a pocket size case.

Each Wilcom Optical Power Meter is calibrated at thewavelengths of 850, 1300, 1310, 1490, 1550, and1625nm. This unit is intended for field installation,testing and commissioning of all types of optical fibersystems including passive optical networks (PONs).

Model FM1318 can measure absolute power in dBm,and microwatts (µµµµµW) along with attenuation (relativepower) as dBr. The FM1318C provides the samefunctions, except it can measure absolute power inmilliwatts (mW) instead of microwatts. Both modelshave the ability to store (STORE REF) the currentlydisplayed dBm power level reading as a reference forsubsequent measurements.

The FM1318 / FM1318C Optical Power Meter iscontained in a rugged molded case with a bale, and hasan overall size of 6.3 x 3.3 x 1.3 inches.

• Calibrated at 850,1300,1310,1490,1550,1625nm(FM1318 / FM1318C)

• Multimode and Singlemode(FM1318 / FM1318C)

• +5 to -70 dB dynamic range(FM1318 - standard model)

• +26 to -45 dB dynamic range(FM1318C - high power model)

• 2 kHz Modulation detection(FM1318 / FM1318C)

• dB reference store(FM1318 / FM1318C)

• Auto Shut OFF & Auto OFF disable(FM1318 / FM1318C)

• Measurements in dBm, dBr, and microwatts(FM1318)

• Measurements in dBm, dBr, and milliwatts(FM1318C)

• > 100 hours of battery life(FM1318 / FM1318C)

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Features

Applications

• Cable and link loss measurement

• Network auditing and maintenance

• Troubleshooting and repair

• Connector and coupling losses

• Field test and repair

• Bare fiber loss measurement

• Transceiver Output Level

• Passive Optical Networks ( PONs)

• Fiber-to-the-Home

• Fiber-to-the-Premise

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SafetyNOTE: This equipment has been tested and found tocomply with the limits for a Class A digital device, pur-suant to Part 15 of the FCC Rules. These limits are de-signed to provide reasonable protection against harm-ful interference when equipment is operated in a com-mercial environment. This equipment generates, uses,and can radiate radio frequency energy, and if not in-stalled and used in accordance with the instructionmanual, may cause harmful interference to radio com-munications. Operation of this equipment in a residen-tial area is likely to cause harmful interference in whichcase the user will be required to correct the interferenceat his own expense.

PrecautionsUse care when working with any optical transmissionequipment. It is good practice to avoid looking directlyat any optical fibers or optical sources. Always refer toyour company's safety procedures when working withoptical systems.

It is important to keep all optical connections andsurfaces free from dirt, oils or other contamination toensure proper operation. This applies to all connectorsthat are connected to the optical port on the any one ofthe Optical Fiber Meters. Scratched or contaminatedconnectors can reduce system performance. Refer toyour company practices for cleaning optical connectors.Always replace the protective dust cap after use.

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When the Optical Power Meter is first turned on, allsegments of the LCD display are activated for approxi-mately 1 second. This is a self test of the on-boardmicrocontroller based measurement and display sys-tem. The self test is then followed by a 2 second displayof the software version code. After this start-up se-quence, the instrument is stabilized and ready to use.

The Optical Power Meter's LCD display has largecharacters to view measurements. Out-of-range inputsare shown via a "OVER RANGE" indicator.

The LCD display includes operating modes; dBm,dBr, µ µ µ µ µW, (mW FM1318C), and REF. LCD segmentswill illuminate for LOW BATT (low battery), OVERRANGE, wavelengths (850nm,1300nm,1310nm,1490nm,1550nm,1625nm), 2 kHz MODULATIONand a hourglass symbol (indicates auto power off isenabled).

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LCD Display

Figure 1: FM1318 / FM1318C Front PanelOperating Controls

Front Panel Operating Controls

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1

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3

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6

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NOTE: The FM1318 / FM1318C have the samefeatures and front panel controls. The unitsdiffer in dynamic range and adapter cap sizeonly.

Universal Adapter Mount - The threaded mountallows the connection of various adapter caps for theacceptance of the required fiber optic connectors. Adaptercaps, purchased separately , convert the threaded mountto the required connector style.

Liquid Crystal Display (LCD) - When thePower Meter is first powered ON, all segments of thedisplay are illuminated as a self test. Measurements aredisplayed in absolute power (dBm), loss (dBr), andmicrowatts (µµµµµW FM1318) , and milliwatts (mWFM1318C) with enunciators defining wavelength, LOWBATT (low battery), OVER RANGE (when > +5dBmis measured on the FM1318 or when > +26 dBm ismeasured on the FM1318C), and REF (indicates storedreference value).

For an optical power measurement less than -70 dBm(FM1318) or less than -45 dBm (FM1318C) the LCDdisplay will read LO. A LOW BATT warns theoperator the battery power is low.

If the hourglass symbol is ON, theAUTO OFF feature is enabled, and the unit will turn offafter 5 minutes. If the hourglass symbol is OFF, the unit

Operating Controls

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1

2

3

Operating Controls (cont.)

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will stay on until turned off by the user. The AUTO OFFstate can be toggled by holding the MODE key whileturning on the unit.

AC Charger Input - This optional feature isused when the power meter is ordered with NiCadrechargeable batteries.

Each press of the MODE key cycles opticalpower meter between dBm, dBr, microwatts (µ (µ (µ (µ (µWFM1318), milliwatts (mW FM1318C), and REF (storedrefernce value).

When depressing the I/O key once, the unitpowers on. During this power on cycle, the display doesa self-check of all its segments for approximateky 2secinds. Depressing the I/O again key will turn off theoptical power meter.

Depressing the REF STORE key will storethe current dBm displayed measurement value as astored reference value, and the unit will then automati-cally switch to the dBr mode.

The Greek letter lambda (λλλλλ) denotes wave-length. 850, 1300, 1310, 1490, 1550, and 1625nmwavelengths are available. Depressing this key willselect the desired wavelength on the power meter.

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Operation

Optical Power Verification

Verification that the Optical Power Meter is operatingproperly can be accomplished by following the proce-dure described below.

• Clean all optical ports and connectors according toyour company procedures.

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Wilcom

~ I/O

1310

1490

BAT

CW 2 Khz

1 Khz 270 Hz

λ

CHG

1550

FS1318Fiber O ptic S ource

dBm dBm

Wilcom

REFSTOREλMODE

1310

0.00

FM1318Fiber O ptic Meter

I/O

Figure 2 - Optical Power Verification Diagram

Operation (cont.)

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• Connect a patch cable to the FM1318 / FM1318CPower meter.

• Connect a patch cable to Laser Source such as theWilcom FS1318.

• Connect the ends of the patch cables together using acoupling device.

• Turn on the FS1318 Fiber Laser Source and set to1310nm. Allow 1-2 minutes for the unit to stabilize.

• Turn on the optical power meter and set the wave-length to 1310nm. Set the power meter to dBm using theMODE key.

• The launch output power of the FS1318 Laser Sourceis factory set to 0.00 dBm. Note: This reading can vary depending on the patch cable that isbeing used, the type of connector polish, and how well the connectorsare cleaned.

• Store the power meter reading by depressing the REFSTORE Key on the power meter while in the dBmmode, and the power measurement will store automati-cally. The FM1318 / FM1318C automatically changesto dBr mode and "zeros" out the meter. This measure-ment will be the stored reference value.

Operation (cont.)

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Note: An important consideration is the wavelength ofthe optical signal. Both the Fiber Laser Source and theoptical power meter must be set at the same wavelengthto ensure accurate measurements. The above exampledescribes 1310nm testing. To test 1490nm or 1550nm,simply set both the Wilcom Fiber Laser Source and thepower meter to either 1490nm or 1550nm.

Optical Loss Measurements

• Verify the launch power of the Laser Source using theprevious procedure, and store the reading by depressingthe REF STORE key on the power meter while in thedBm mode and the power measurement will be storedautomatically. The FM1318 / FM1318C automaticallychanges to the dBr mode and "zeros" out the meter.

• Disconnect the patch cables at the couplings. Be surenot to disturb the connection at the end of the WilcomFiber Laser Source or the power meter. This is toensure accurate measurements.

• Reconnect the patch cables to the fiber cable undertest. Refer to the example in Figure 3.0. The powerreading displayed on the power meter is the loss of thefiber cable under test.

Operation (cont.)

Figure 3 - Optical Loss Measurement Diagram

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Wilcom

~ I/O

1310

1490

BAT

CW 2 Khz

1 Khz 270 Hz

λ

CHG

1550

FS1318Fiber O ptic S ource

dBr dBr

Wilcom

REFSTOREλMODE

1310

-1.10

FM1318Fiber O ptic Meter

I/O

fiber cable under test

patch cable patch cable

Battery ReplacementThe Optical Power Meter requires no periodic mainte-nance other than replacing the batteries. Under normaluse the two AA alkaline batteries should provide greaterthan 100 hours of continuous use. To replace the batter-ies, place the unit with its back side facing up. Press atthe arrow and slide to release the battery cover. Installbattery and then secure cover by sliding it back in place.

Optional Battery Charger

When the Optical Power Meters are purchased with the optionalbattery charger, they are shipped with two AA NiCAD recharge-able batteries. The batteries have been kept in the unchargedstate for shipment. Therefore, be sure to fully charge it beforeuse.

To charge the batteries, simply plug the charger's transformerinto an AC outlet and the other end into the charger jack on theFiber Meter. Charge the unit overnight ( about 14 hours). Thebatteries may be charged with any battery charger with thefollowing specifications:

INPUT: AC 120V~, 60 Hz in the USA and CanadaAC 110-240 V~, 50/60 Hz in other countries

OUTPUT: 8.7-15 V AC or DC @>150mA,2.1 mm coax jack (Tip - Positive)

Important — When charging batteries in unit, pleasebe sure to use only NiCAD batteries. Charging anyother type of battery will cause damage to unit.

Maintenance

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General CareTo avoid damage to the Optical Power Meter, do not usecable connectors that are dirty or faulty. A dust cap isprovided for the optical output port, and should be inplace when the unit is not in use to prevent foreignmaterial from entering the port. It is best to clean theconnectors first, using cotton swabs and isopropyl alco-hol.

To clean the inside of the optical connector, use only asmall diameter cotton swab lightly moistened withisopropyl alcohol.

Clean the Optical Power Meter's body with a dampcloth. Do not use solvents or abrasives.

CalibrationThe recommended calibration interval on the WilcomFM1318 / FM1318C Optical Power Meter is every 2years. Wilcom's calibration service is N.I. S.T. traceableand properly equipped to calibrate these meters.

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Maintenance (cont)

Customer Service

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Service and Repair

For service or repair follow the procedure below:

1. Call Wilcom Customer Service. Support personnelwill determine if the equipment requires service, repairor calibration.

2. If the equipment must be returned to Wilcom forservice, Wilcom Customer Service will issue a ReturnMaterial Authorization (RMA) number and the follow-ing address for return:

Wilcom 73 Daniel Webster Highway Belmont, NH 03220 TEL (800) 222-1898 (USA only) or (603) 524-2622 FAX (603) 524-3735 www.wilcominc.com

IMPORTANTNever send any equipment back to Wilcomwithout a Return Material Authorization(RMA) number.

3. Pack the equipment in its original shipping material.Be sure to include a statement or report fully detailingthe defect and conditions under which it was observed.Also be sure to include a contact name and telephonenumber.

4. Return the equipment, prepaid, to the above address.Be sure to write the RMA on the shipping slip. Wilcomwill refuse and return any package that does not bear theRMA.

Ordering Information

Orders for Wilcom Models FS1318, and FM1318/FM1318C and any of its optional accessories should bedirected to the address shown above.

Customer Service (cont)

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Size 6.3"H x 3.3"W x 1.3"D (160 x 83 x 33mm)

Weight 0.49 lbs ( 220g )

Detector Type InGaAs Filtered InGaAs

Power Range +5dBm to -70 dBm +26 dBm to -45 dBm

Wavelength 850, 1300, 1310, 1490, 1550, & 1625nm

Accuracy +/- .25dB ( measured at 23°C, 1310nm @ -20dBm)

Resolution 0.01 dB

Display Indicators 4 digit LCD

Low Battery Indicator Visual indicator

Signal Overange Visual indicator

Modulation - 2kHz Visual indicator

Battery Life ( Alkaline) >100 hrs. continuous use

Adapter Caps ST, FC, SC, LC or Universal

Power Two AA-Size Alkaline or NiCad (opt.)

NiCAD Charger (opt.) 8.7-15 VAC/DC> 150mA - Tip-Positive

0 to +40 C-20 to +60 C

MODEL FM1318 FM1318C

Specifications (cont.)

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Operating Temp.Storage Temp.

Pending

Wilcom Fiber Optic Products

FM8510 30851001FM8515B 30851511FM8515C 30851514FM8520 30852001FM1317 30131705

ST 04419812-01-04SC 04419716-01-4FC 04419857-01-2Universal Adapter Cap 30031992LC 30032070-01-4

Stabilized Fiber Sources

Optical Power Meters

FS8513A (850/1310nm LED Source w/ST) 30851310FS8514A (850/1310nm Laser Source w/ST) 30851407FS1316 (1310/1550nm Laser Source w/ST) 30131602FS1317 (1550/1625nm Laser Source w/ST) 30131702FS1318 (1310,1490,1550nm Laser w/SC) 30131801

Optical Fiber IdentifierF6121A 30612130F6222 30622210F6222C 30622230Optional 2mm Head 04419965-01-RC-1Optional 1.6mm Head 04420715-01-RC-1

Visual Fault LocatorF6230A - 650nm Laser 306230852.5mm to 1.25mm adapter 30032232-01

Optical Power Meter Small Adapter CapsFM8510, FM8515B, FM8520, FM1317, FM1318

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Model Number Wilcom Part Number

Optical Power Meter Large Adapter CapsFM8515C, FM1318C

3079/ST 30030792-01-13175/SC 30031752-01-43019/FC 30030191-01-23011/D4 30030118-01-33013/Biconic 30030134-01-1LC 30032052-01-5

All products are warranted against defects in materials and workman-ship. This warranty applies for a period of two (2) years from date ofdelivery, except for Fiber Optic instrumentation and equipmentwhich have a one (1) year warranty on parts and two (2) years on labor.(The only exceptions in the digital testing equipment is the D550Shark, which has a warranty of one (1) year from date of delivery.)Wilcom's obligation under this warranty is limited to servicing oradjusting each instrument returned to its factory within the warrantyperiod, and to replace any components found to be defective. Thiswarranty does not apply to instruments that have been repaired oraltered by unauthorized person, or which have been subject to misuse,negligence or accident.

LIMITATION OF WARRANTYThe foregoing warranties are the exclusive warranties provided byWilcom. Wilcom will not be liable for any special, indirect, incidentalor consequential damages whatsoever resulting from loss of use, lossof data or loss of profits arising out of or in connection with the useor performance of the product, even if Wilcom has been informed ofthe possibility of such damages in advance. All implied warranties,including without limitation warranties of merchantability and fit-ness for a particular purpose, as well as warranties arising from acourse of dealing or usage of trade are expressly disclaimed.

PROPRIETARY INFORMATIONThe information contained in this manual is the proprietary materialof Wilcom, and may not be reproduced, used for manufacturingpurposes, or disclosed to others for any use without written permis-sion from Wilcom.

WARRANTY

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