LTS-1500 Fiber Optic Test Set Operating Instructions
Contents
1. Continued Store Loss This control saves the current measurement value s to non volatile memory for later downloading This may be a dBm measurement or a three wavelength dB loss measurement When the button is activated the memory location is flashed on temporarily The memory loca tions will begin at address 000 and auto increment as each new value is stored Locations may be skipped if so desired by invoking the Recall mode and advancing the memory pointer The next storage location will be incremented from this point Upon filling memory location 1999 no more data may be stored and the screen will indicate FULL even though some locations may have been skipped The memory must then be cleared before new data can be stored Be sure to down load any desired data before clearing the memory Clearing memory is accomplished by holding down the Sto Loss and Rcl Loss buttons simultaneously for four seconds The display will indicate while the memory is being erased The memory address display will indicate progress of the operation Page 6 Model LTS 1500 Optical Fiber Tester Ems SZ H asm Source nm Modulation KG 1000 Hz Auto Shutdown gt 270 Hz 2000 Hz Store dB D v rod ee Mod Clear All erahertz Tra Fig 1 Instrument Operation Continued Source Selector This control selects the laser wavelength to be used2. annunciator will flash on briefly and indicate the memory location to which it is being saved Refer to Fig 2 To make a relative power measurement you must first save the reference power level by pressing the Store Ref button Then press the dB dBm button The units of the display will now change to dB Subsequent readings will now be displayed in terms of dB relative to the stored reference value A reference memory location is provided for each calibrated wavelength These stored reference values will be lost once the unit is turned off Stored power level measurements may be recalled and displayed by pressing Rcl Loss Page 9 Operating Considerations Optical Power Measurements continued The memory location will be displayed following the Mem annunciator Use the 7 arrows Source Mod respectively to access any desired memory location Holding these buttons down will cause the memory location to advance automatically When the limits are reached 0 and 1999 the memory location will roll over from 1999 to 0 and from 0 to 1999 An Auto Test loss measurement will be displayed as follows The Auto Test annunciator will be displayed without the Up Down arrows The stored loss values and the wavelength at which they were measured will be displayed sequentially for a period of 5 seconds each so that they may be copied down if so desired If simple power levels were stored they are displayed along with the wavelength at which the
3. Lo Bat Auto Off Storage Locations 2000 Battery Supplied Rechargeable Li Polymer Operating Time Approximately fifteen hours following a full charge Power Supply Charger Provided Wall Mount Universal US UK Continental Europe and Australian Plugs Included Power Requirements 95 260 50 60 Hz 3 VA Max Operating Temperature Range 10 to 45 C Dimensions mm 150 Lx 100 W x 35H with rubber boot Weight 0 52 Kg Accessories Provided FC ST SC adaptors for both source and power meter rubber boot Battery Power supply charger manual USB Cable PC application software Standard Warranty Two years Components and Workmanship 30 Day Satisfaction Guarantee Page 3 Unpacking and Inspection Prior to shipment this instrument was inspected and found to be free of mechanical and electrical defects Upon acceptance by the carrier he assumes responsibility for its safe arrival After unpacking examine the unit for any evidence of shipping damage Should you receive this instrument in a damaged condition apparent or concealed it must be noted on the freight bill or express receipt and signed by the carrier s agent Failure to do so could result in the carrier refusing to honor the claim Upon filing a claim TTI should be notified Power Considerations The LTS 1500 is equippped with a 9 V lithium polymer rechargeable battery It will power the unit for approxi
4. TO THE FIRST PURCHASER FOR A PERIOD OF TWO YEARS FROM THE DATE OF RECEIPT THAT THIS PRODUCT THE PRODUCT WILL BE FREE FROM DEFECTS IN MATERIALS AND MANUFACTURING THE FOREGOING WARRANTY IS THE ONLY WARRANTY EXPRESS OR IMPLIED GIVEN BY TTI LE THERE IS NO WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE TTI HEREB Y DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OTHER THAN THE WARRANTY IN THE FIRST SENTENCE TO THE FULLEST EXTENT PERMITTED BY LAW THE SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY IS REPAIR OR REPLACEMENT AT TTI S OPTION OF ANY PRODUCT THAT PROVES TO BE DEFECTIVE IN MATERIALS OR MANUFACTURING WITHIN TWO YEARS OF RECEIPT OF THE PRODUCT NOTE THIS WARRANTY DOES NOT APPLY TO ANY PRODUCT WHICH HAS BEEN SUBJECT TO MISHANDLING MISUSE OR SERVICE BY UNAUTHORIZED PERSONNEL OR TO ANY PRODUCT WHICH HAS BEEN DAMAGED MODIFIED ALTERED OR TAMPERED WITH TO THE FULLEST EXTENT OF THE LAW TTI DISCLAIMS ALL LIABILITY FOR ANY OTHER DIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES ALLEGED TO BE CAUSED BY A DEFECTIVE PRODUCT I E TTI WILL NOT BE RESPONSIBLE FOR ANY PERSONAL INJURY PROPERTY DAMAGE OTHER THAN THE COST OF REPLACING THE PRODUCT OR ANY OTHER MONETARY DAMAGE SUCH AS LOST WAGES OR PROFITS CAUSED BY ANY USE ATTEMPTED USE OR INABILITY TO USE THE PRODUCT NOTE BY USING THE PRODUCT YOU AGREE THAT REPAIR OR REPLACEMENT AT TTT S OPTION WILL FULLY SATISFY TTI S WARRANTY OBLIGATION TO YOU WHETHER IN CONTRACT TORT NEGLIGENCE STRICT LIABILITY OR
5. measurements may be stored for later download to a host computer via a USB port Application software is also provided for Windows based computers A rugged hard plastic storage carrying case and a protective rubber boot make this instrument an excellent choice for outside plant use Page 1 Specifications Power Meter Detector Type Indium Gallium Arsenide Calibrated Wavelengths 850 1300 1310 1490 1550 1625 nm Units of Measurement dBm dB 0 01 db resolution Display Update Rate Six times per second Power Input Range 5 dBm to 77 dBm Power Measurement Uncertainty 0 18 dB under reference conditions 0 25 dB from to 65 dBm 0 35 dB from O to 5 dBm and from 65 to 77 dBm Laser Output Power O dBm 1 mw Output Stability 05 dB 24 hrs constant temp O2 dB C temperature coefficient Laser Wavelengths Provided 1310 nm 20 nm 1490 20 1550 20 nm Modulation Modes Provided CW 270 Hz 1000 Hz 2000 Hz Autotest Measurement Rate Four seconds per wavelength Laser Safety Classification Class safety per FDA CDRH and IEC 825 1 regulations Autotest Hange to 36 dB Display LCD power reading 0 4 high digits DI dB resolution Power meter laser wavelength display 0 16 high digits Page 2 Specifications Continued Annunciators Fiber ID 3 modulation mode 4 Autotest 2
6. LTS 1500 Fiber Optic Test Set Operating Instructions Terahertz Technologies Inc 169 Clear Road Oriskany NY 13424 TEL 315 736 3642 FAX 315 736 4078 E mail sales terahertztechnologies com Contents ea 1 iere M C 2 Unpacking and SIGS CT OW AAA 4 Power alea ai zare 4 Instrument OCP AION aa 5 Operating Considerations nun 8 Sorvico Warranty IntofWTiallOUk uie suec ee 18 Introduction The LTS 1500 Fiber Test Set is a convenient hand held instrument that incorporates a sensitive optical power meter containing an InGaAs detector for maximum sensitivity and stabilty three stabilized laser light sources and the means to make automatic loss measurements at all three wavelengths over a pair of singlemode fibers simultaneously The unit also functions as a fiber identifier that permits modulation and detection of the laser sources at three frequencies 270 Hz 1000 Hz 2000 Hz Each instrument is equipped with adaptors to acommodate FC ST or SC connectors for both the laser ouput and the power meter input The LTS 1500 is powered by a high capacity lithium polymer rechargeable battery and or a universal wall mount supply that operates from 95 260 VAC 50 60 Hz It is equipped with mains plugs for North America continental Europe Great Britain and Australia Battery life exceeds 15 hours at full charge Up to 2000 triple wavelength loss
7. OTHER APPLICABLE LAW Page 14
8. The lasers are initially turned off when the instrument powers up Pressing the Source button activates the laser and changes wavelength in the following sequence 1310 nm gt 1490 nm gt 1550 nm gt Auto Test in which the lasers are activated in a sequence of 5 seconds each gt OFF When transmitting in Auto Test the Annunciator will appear at the top of the display with an up pointing arrow The source wavelength display will automatically change in accordance with the laser in use Modulation Selector This control selects the modulation of the laser source This feature permits using the instruments to identify a particular fiber in a cable The sequence is as follows Continuous Wave CW gt 270 Hz gt 1000 Hz gt 2000 Hz gt CW The modulation is a 50 96 duty cycle square wave An arrow points to the modulation mode selected When the power meter detects light modulated at one of these frequencies the associated annunciator will flash Page 7 Indicates the battery is low Unit will shut down momentarily When Source is displayed the fol lowing numbers indicate the wave length of the source that is currently in use The exact measured wave length is always displayed Wavelengths will change every few seconds during Auto Test When is displayed the follow ing numbers indicate the memory location that has been Fig 2 Operating Considerations AutoTe
9. age 6 Model LTS 1500 Optical Fiber Tester Gr GE HH asm Mem Source Modulation b 1000 Hz Auto Shutdown gt 270 Hz 2000 Hz Store Ref dBm A v Sto Rel Loss Loss Source Clear All erahertz T echnologies 4 Fig 1 Instrument Operation Continued Recall Loss When pressed the unit enters Recall Mode which displays a memory location and the value s stored in it If the memory location is empty four horizontal lines will appear in the main display as well as the power meter wavelength display In this mode the user may access any memory location by using the up and down controls Source and Mod Holding one of these but tons down will cause it to accelerate through the memory locations so that all 2000 locations can be accessed quickly When a location contains an AutoTest measurement all three loss measure ments will be shown in a repeating sequence An Auto Test measurement will be indicated by the presence of the Auto Test annunciator on the display without the up or down arrows To exit the Recall mode simply press Rcl Loss again Page 6 Model LTS 1500 Optical Fiber Tester IBBH v cam Source nm Modulation gt 1000 Hz Auto Shutdown gt 270 Hz 2000 Hz Store dB A v EO dda Source Mod Clear All erahertz T echnologies nc N Fig 1 Instrument Operation
10. length is displayed in the upper right hand corner of the display Clear All erahertz T echnologies I r Fig 1 Page 5 Page 5 Instrument Operation Continued Model LTS 1500 Optical Fiber Tester Store Reference Level This control saves the currently measured power level for the wave Power Meter Autotest length in use When in the dB mode all subsequent readings will be made relative to this power 2044 Hmm level A storage location is maintained for each of the six calibrated wavelengths E BE E a Mem Source 1 nm Modulation 1000 Hz Auto Shutdown gt 270 Hz 2000 Hz dBm dB mode Selector This control alternately switches between comparing the currently measured power to 1 00 milliwatts dBm mode or to the stored reference power level dB mode When changing to the dB mode if no reference level has been previously stored an error tone will sound and the message reF will be displayed for a few seconds The reference values are volatile that is they are not saved when the unit is powered down Clear All If you are in dB mode and attempt to select a wavelength that has no stored reference the error Ge message will appear and the wavelength change will not be accepted until a reference level has I been stored for the new wavelength Return to the dBm mode and store a reference level for the A sd new wavelength Fig 1 P
11. mately 15 hours following a full charge For bench top operation a wall mount power supply charger is provided This supply may be operated from 95 260 VAC 50 60 Hz Four interchangeable mains plugs are supplied North America continental Europe and Australia If the supplied battery is discharged in the field and no mains power is available a 9 V alkaline or other primary battery may be used temporarily NEVER attempt to use the charger with any battery other than the one supplied with the unit or severe damage to the instrument may result Page 4 Instrument Operation Model LTS 1500 The LTS 1500 consists of an optical power meter and three stabilized En ese light sources Refer to Fig 1 for location and appearance of the IBHB controls and annunciators to be described nm H H H Bas Power ON OFF This control alternately energizes and de energizes the unit Holding the key soe 1H AA m down for at least four seconds at turn on will invoke the Auto Shutdown mode which turns the unit Auto Shutdown gt 270 Hz 2000 Hz off following fifteen minutes without a key press This mode conserves the battery if the user should forget to turn the unit off Power Meter Wavelength Selector This control selects the calibration factor for the wave length being measured by the power meter The progression is as follows 850 nm gt 1300 nm gt 1310 nm 221490 nm gt 1550 nm gt 1625 nm gt 850 nm etc The wave
12. st Annunciator Up arrow indicates the unit is transmitting auto test signals down arrow indicates unit is receiving auto test signals Power Meter Calibration Wavelength setting Will change automatically when receiving Auto Test signals Power Meter Autotest Ay in nm I Units of Measurement dB or dBm Arrow indicates how the laser source Mem j 1 1 1 Source 19 5 Modulation 0 j i annunciator iS PCW ange flashing it is receiving modulation of Auto Shutdown 270 Hz gt 2000 Hz that specific frequency Not active during Auto Test When this annunciator is on the unit will automatically shut down following 15 minutes without a key press Page 8 Operating Considerations Optical Power Measurements Connect the fiber carrying the optical power to be measured to the LTS 1500 detector utilizing the adaptor that mates with the fiber connector style in use Energize the unit Select the wavelength calibration factor that matches the wavelength of the light being measured by pressing the A key repeatedly until the desired wavelength setting appears on the display Refer to Fig 2 The power reading will now indicate the optical power in units of dBm If the power level is greater than 5 or less 77 dBm the display will indicate out of range condition a series of dashes across the main isplay To save the power measurement press Sto Loss The Mem
13. ulation mode in use Note that when measuring average power of the lasers the output will drop by exactly 3 01 dB as the source is off precisely half of the time This is also true of the laser output when in the Auto Test mode however the unit receiving this signal automatically compensates for the loss in average power and this is transparent to the user The modulation function is useful for fiber identification and for general purpose optical component testing The unit that receives one of the modulated frequencies will flash the appropriate frequency annunciator that is 270 Hz 1000 Hz or 2000 Hz Page 12 Warranty and Repair Information REPAIR INFORMATION Products manufactured by Terahertz Technologies Inc TTI are designed and fabricated to provide reliable performance However in the event that service is required both telephone technical assistance and factory repair services are available Call 315 736 3642 for information For IN WARRANTY REPAIRS call us to obtain a Returned Material Authorization number RMA Number All products are to be returned to TTI with freight charges pre paid Those products sent under warranty will be returned to our customers pre paid We cannot be responsible for returned products that do not reference the TTIRMA number For OUT OF WARRANTY repairs services are billable for both time and materials Page 13 LIMITED WARRANTY TERAHERTZ TECHNOLOGIES INC WARRANTS THAT
14. y were measured To exit the Mem mode simply press the Rcl Loss button again The unit will now revert back to the active measurement mode Page 10 Operating Considerations Using the Laser Source The laser source is equipped with interchangeable adaptors that accommodate connection to FC ST and SC style fiber optic connectors It is located at the top left of the unit when facing the display To change adaptors remove the two Philips head screws that retain the adaptor remove the old adaptor and replace it with the desired adaptor and replace the two screws The lasers are initially in the off state when the unit is powered up Pressing the Source button ac tivates the laser and changes wavelength in the following sequence 1310 nm gt 1490 nm gt 1550 nm 2 Auto Test in which the lasers are activated in a sequence of 5 seconds each 2 OFF When transmitting in Auto Test the Annunciator will appear at the top of the display with an up point ing arrow The source wavelength display will automatically change in accordance with the laser in use The laser wavelength display shows the actual measured wavelength of the laser in use In the non auto test mode the lasers may by used in the CW continuous mode or they may be Page 11 Operating Considerations Using the Laser Source continued modulated by a square wave of 270 Hz 1000 Hz or 2000 Hz An arrow next to these values on the screen indicate the mod
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