Tektronix SD44 User Manual
Contents
1. 1310 nm and 1550 nm Be sure the optical power meter wave length setting and optical attenuator setting is at 1310 nm Enable the optical output 3 Adjust attenuator or the optical source so that the power meter reads 200 uW 4 Move the FC fiber end the one now adjusted to 200 uW average power from the optical power meter and connect it to the SD 44 input under test 5 Attach voltmeter with 50 Q termination to SD 44 output 6 Record the voltmeter reading The 1310 nm Conversion Gain in units of V mW is voltmeter reading 5 7 Record the 1310 nm conversion gain on the test record 8 Disconnect the 1310 nm laser from the optical attenuator and reconnect the 1550 nm laser source Set the optical attenuator to the correct wavelength NOTE Do not disturb the fiber connection between the optical attenuator output and the SD 44 input 9 Adjust the optical attenuator until the voltmeter reading is the same as in step 6 above 1 10 Without moving the optical attenuator from the position in the previous step disconnect the output fiber of the optical attenuator from the inline adapter with the SD 44 and insert the optical attenuator output into the optical power meter 14 SD 44 Instruction Manual Performance Verification 11 Adjust the optical power meter to the calibrated wavelength setting of 1550 nm Note the absolute power displayed The 1550 nm conversion gain in units of V mWopt is 200 uW m2. 90 10 single mode optical splitter with FC PC connectors m DIN to FC fibre optic hybrid connector m 10 dB in line single mode optical attenuator m Stand alone power supply For a list of part numbers see page 18 SD 44 Instruction Manual Getting Started Installation 11800 or CSA 803 Series SD 44 Instruction Manual Follow the instructions in this section to install the SD 44 O E converter into the Tektronix 11800 Series Digital Sampling Oscilloscope or CSA 803 Communica tions Signal Analyzer or to connect it to the optional power supply for stand alone operation On the Tektronix 11800 Series Digital Sampling Oscilloscope or the CSA 803 Communications Signal Analyzer the SD 44 O E converter installs into any of the front panel compartments NOTE For the best performance connect the SD 44 Optical to Electrical Converter to the input of the sampling head using the rigid connector provided The sampling head must be in the compartment immediately to the right of the O E converter See Figure 2 Choose one of the following Tektronix sampling heads to connect to the output of the O E converter m SD 22 recommended for lowest noise performance SD 24 SD 26 SD 30 SD 32 Use the following procedure to install the O E converter and sampling head modules CAUTION The output of the O E converter and the input of the sampling head are subject to damage from electrostatic discharge ESD To prevent da
3. OPT SINGLE MODE 2M L FC PC TO DIAMOND 2 5 CA ASSY FBR OPT SGL MODE 2M L FC PC DIAMOND3 5 CA ASSY FBR OPT SINGLE MODE 2M L FC PC ST CA ASSY FBR OPT SGL MODE 2M L FC PC FC PC CA ASSY FBR OPT SGL MODE 2M L FC PC BICONIC CABLE FIBER OPT UMPER 2 METER 62 5 MICRON FC PC TO FC PC CABLE FIBER OPTJUMPER 2 METER 62 5 MICRON FC PC TO BICONIC CABLE FIBER OPTJUMPER 2 METER 62 5 MICRON FC PC TO SMA 906 Mfr code 93907 80009 0GZV8 0 5 7 0 5 7 0 5 7 05 W7 060D9 80009 80009 0LK97 64537 64537 80009 0C5R7 80009 80009 80009 80009 80009 62712 62712 62712 Mfr part number ORDER BY DESCRIP 200 3658 00 645 50 0 1 092290 032980 002453 SGMGM AA0002 174 3828 00 071 0061 01 016 1609 00 FA100 35 10 HP D293S D241S 020 2209 00 3 0102 10 B UFC 0 1 UFC 01 174 1497 00 174 1385 00 174 1386 00 174 1387 00 174 1388 00 174 2322 00 174 2322 00 PC SK 20 002A SD 44 Instruction Manual Replaceable Parts Replaceable parts list cont Fig amp index number 9 1 Serial no effective Tektronix part number discont d 161 0066 09 161 0066 10 161 0066 11 161 0066 12 161 0154 00 Manufacturers cross index Mir code 05 W7 06009 0C5R7 0GZV8 OLK97 2W733 5F520 62712 64537 80009 80126 93907 3109 TK2541 Manufacturer PURDY ELECTRONICS CORP UNITREK CORPORATION ALCOA FUJIKURA LTD H
4. and adapters 5 pW Max power gt 1 mW cali HP 811532 head brated from 700 nm 1600 nm 1310 nm cal source output gt 200 uW1 Rifocs 665R PO stability gt 0 1 dB over 5 minutes modulated square wave 10 kHz with off modulation at zero light level 1550 nm cal source output gt 200 uW CW stability gt 0 1 dB over 5 minutes modulated square wave 10 kHz with off modulation at zero light level Rifocs 666R PO RF power meter noise lt 1 mV BW gt 4 GHz HP 436A with power sensor HP 8484A Clark MXR ErF picosecond 1550 laser 1300 or 1550 nm impulse pulse width lt 6 ps generator SD 44 Instruction Manual Performance Verification Output Zero DC Conversion Gain SD 44 Instruction Manual Table 2 Test equipment cont Description Example product Sampling oscilloscope with 11K 1180X CSA80xX with sampling head SD 32 sampling head PC with GPIB port and printer output of sampled wave printer forms Adjustable single mode 4 decades 9 um core fiber FC Tektronix 0A5002 optical attenuator style connectors Digital voltmeter 4 1 2 digit Keithley 2000 or Tektronix DMM916 50 Q termination 1 011 0049 01 BNC to banana adapter BNC female to dual banana 103 0090 00 Optical cable FC FC multimode 9 um 2 meters 174 1910 00 Inline optical adapter FC female to FC female 131 5039 00 1 CW and modulated mode available modulation with OFF level at or below 0 1 pW optical fallti
5. DUNCAN SC 29334 ESSEX J UNCTION VT 05452 3408 NEPEAN ONTARIO CA ONTARIO K2G 5W8 RICHMOND IN 47374 OSKALOOSA IA 52577 0115 TORRANCE CA 90505 WHIP PANY NJ 07981 BEAVERTON OR 97077 0001 GARDENA CA 90247 4203 ROCKFORD IL 611045181 SOMERSET 08873 ELK GROVE VILLAGE IL 60007 21 Replaceable Parts 22 SD 44 Instruction Manual
6. Instruction Manual Tektronix SD 44 Optical to Electrical Converter 071 0061 01 Copyright Tektronix Inc All rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in the U S A Tektronix Inc Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If a product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be r
7. Manual Getting Started SD 44 Instruction Manual NOTE On the 803 series the O E converter will work in any of the power only or sampling head compartments but the sampling head must be installed in one of the two sampling head compartments on the right See Figure 3 SD 44 or sampling head C2 O SD 44 only power only compartments Figure 3 Front panel compartments in a CSA 803 Communications Signal Analyzer Getting Started Optional Power Supply The optional power supply kit Figure 4 allows the user to power the SD 44 O E converter by itself This allows the O E converter to operate with other types of measurement instruments independent of a CSA or 11800 series mainframe The part number for the kit is on page 20 7 CR Figure 4 Installation with optional power supply kit 6 SD 44 Instruction Manual aa Operating Basics Handling To prolong the life of the SD 44 O E converter observe the following handling cleaning and operating instructions Handle the SD 44 O E converter carefully at all times CAUTION To avoid damaging the SD 44 O E converter take the following precautions Do not drop the O E converter since damage and misalignment of the photo diode optical assembly can result Store the O E converter in a secure location when not in use Replace the protective caps on the input and outpu
8. UBER amp SUHNER INC J DS FITEL INC BELDEN WIRE amp CABLE COMPANY PANEL COMPONENTS CORP SEIKO INSTRUMENTS USA INC KDI TRIANGLE ELECTRONICS INC TEKTRONIX INC PACIFIC ELECTRICORD CO CAMCAR DIV OF TEXTRON INC FELLER U S CORPORATION AMERICOR ELECTRONICS LTD SD 44 Instruction Manual Serial no Qty Name amp description Mfr code Mfr part number Optional Power Cords 1 CA ASSY PWR 3 0 75MM SQ 250V 10A 99 2W 733 ORDER BY INCH STR IEC320 RCPT EUROPEAN DESCRIPTION 1 CA ASSY PWR 3 1 0 MM SQ 250V 10A 2 5 TK2541 ORDER BY METER STR IEC320 RCPT X 13A FUSED UK DESCRIPTION PLUG 13A FUSE UNI 1 CA ASSY PWR 3 1 0MM SQ 250V 10A 2 5 80126 ORDER BY METER STR IEC320 RCPT AUSTRALIA SAFTEY DESCRIPTION CONTROLLED 1 CA ASSY PWR 3 18 AWG 250V 10A 98 53109 ORDER BY INCH STR IEC320 RCPT X NEMA 6 15P US SAFTEY DESCRIPTION CONTROLLED 1 ASSY PWR 3 1 0MM SQ 250V 10A 2 5 5F520 86515030 METER STR IEC320 RCPT SWISS SAFTEY CONTROLLED Address City state zip code INTEROPTIC DIVISION SUNNYVALE CA 94086 720 PALOMAR AVE 3000 COLUMBIA HOUSE BLVD SUITE 1 20 150 RIDGEVIEW CIRCLE 19 THOMPSON DRIVE 570 WEST HUNT CLUB RD 2200 US HWY 27 SOUTH PO BOX 1980 PO BOX 115 ELECTRONIC COMPONENTS DIV 2990 W LOMITA BLVD 60 S EFFERSON RD 14150 SW KARL BRAUN DR PO BOX 500 747 WEST REDONDO BEACH PO BOX 10 ATTN ALICIA SANFORD 516 18TH AVE 72 VERONICA AVE UNIT 4 UNIT H 2682 W COYLE AVE VANCOUVER WA 98661
9. ceable Parts o 9 a Figure 9 Optional power cords SD 44 Instruction Manual 19 Replaceable Parts Replaceable parts list Fig amp index Tektronix Serialno Serial no number part number effective discont d 6 1 211 0001 00 2 200 3658 00 3 015 1020 00 7 1 131 6252 00 2 131 6250 00 3 131 6251 00 4 174 1910 00 5 174 3828 00 071 0061 01 8 1 016 1609 00 2 119 5118 00 3 015 0565 00 015 1014 00 4 020 2209 00 5 174 3737 00 6 174 1497 00 174 1385 00 174 1386 00 174 1387 00 174 1388 00 174 2322 00 174 2323 00 174 2324 00 20 Qty Name amp description SCREW MACHINE 2 56 X 0 25 PNH STL CD PL POZ COVER CONNECTOR FC W CHAIN TERM COAXIAL SHORT CIRCUIT SMA Standard accessories CONN FC TO FC SQUARE MOUNT ADAPTER W ZIRCONIA CERAMIC SLEEVE CONN FC TO ST ADAPTER W ZIRCONIA CERAMIC SLEEVE CONN SC TO FC SQUARE FLANGE ADAPTER W ZIRCONIA CERAMIC SLEEVE ASSY FBR OPT SM 2ML FC PC TO FC PC ASSY RF COAXIAL RFS 50 OHM SMA X SMA MANUAL TECH INSTRUCTION SD44 DP Optional accessories POWER CORD KIT ADAPTER CABLE amp US POWER CORD ATTEN OPTICAL 30MM LIODBFOR 1310 1550NM FC CONN FA100 35 10 HP CTS710 POWER DIVIDER 50 OHM 3 SMA FEMALE CONN PWR DIVIDER RES 50 OHM SMA ACCESSORY KIT CONNECTOR OPTICAL DIN TO FC SQUARE MOUNT ADAPTER FIBER OPTIC COUPLER 1 X 2 SPLITTER WAVELENGTH INDEPENDENT 90 10 RATIO ATT 0 1 DB REFLE CA ASSY FBR
10. duct La A CAUTION CAUTION Static Sensitive Refer to Manual SD 44 Instruction Manual iii Contacting Tektronix Product Support Service Support For other information To write us For application oriented questions about a Tektronix measure ment product call toll free in North America 1 800 TEK WIDE 1 800 835 9433 ext 2400 6 00 a m 5 00 p m Pacific time Or contact us by e mail tm_app_supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Contact your local Tektronix distributor or sales office Or visit our web site for a listing of worldwide service locations http www tek com In North America 1 800 TEK WIDE 1 800 835 9433 An operator will direct your call Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 SD 44 Instruction Manual Getting Started SD 44 Instruction Manual The SD 44 is an optical to electrical O E converter that converts an optical input signal into an output voltage for display on either a high speed oscillo scope or spectrum analyzer The converter accepts optical signals from DC up to 15 GHz The SD 44 O E converter installs in any of the front panel compart ments of a Tektronix 11800 Series Digital Sampling Oscilloscope the SM 11 Multichannel Unit or the Tektronix CSA 803 Communications Signal Analyzer An optional stand alone power supply is also available for the SD 44 O E converter see
11. easured 1550 power x 1310 nm conversion gain 12 Record the 1550 nm conversion gain on the test record Noise Equivalent Power Power the SD 44 under test using an 11801 DSO 1 2 Zero the RF power meter Connect the SD 44 output channel to the RF power meter With the dust cover on the input to the SD 44 the power meter should read less than 15 pW V18 GHz measured conversion gain in V W 50 2 81 107 measured conversion gain in V W p Wetec NOTE V W V mWon X 1000 Record the measured and calculated results on the test record Bandwidth Frequency Response 1 SD 44 Instruction Manual Connect the output of the optical impulse generator to the SD 44 optical input through the optical attenuator Connect the trigger output of the optical impulse generator to the trigger input of the digital sampling oscilloscope with a 50 5X electrical attenuator in series with the trigger input Connect the SD 44 output to the scope input using a relatively short 50 Q cable i e lt 1 meter 15 Performance Verification 16 SN 11 Set the optical impulse generator to the 1 MHz rate and low energy mode Adjust the optical attenuator so that the height of the impulse is about 200 mV 5 Set the digital sampling oscilloscope to 10 mV div vertical scale 100 ps div horizontal scale 1024 point record length and insure the entire impulse waveform is wit
12. ecified Only qualified personnel should perform service procedures Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Do Not Operate Without Covers Do not operate this product with covers or panels removed Wear Eye Protection Wear eye protection if exposure to high intensity rays or laser radiation exists Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product SD 44 Instruction Manual General Safety Summary Symbols on the Product The following symbols appear on the pro
13. esponsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Service Assurance If you have not already purchased Service Assura
14. hin the display region Shift the horizontal record so that the start of the impulse is within the first two divisions of the horizontal scale on the display Average the waveform a minimum of 256 times Store the averaged waveform Recall the stored waveform Using a controller attached to the scope via GPIB i e a PC MAC workstation etc download the waveform Using the available controller software i e Labview etc perform an FFT Fast Fourier Transform on the waveform this transforms the time domain 1024 point impulse response to a scalar frequency response Check that the frequency response from DC to 15 GHz is greater than or equal to 6 dB where dB 20log Viog Vac or electrical power into 50 Q SD 44 Instruction Manual Performance Verification Test record Model S erial Number Temperature Date of Calibration Performance test Output zero DC conversion gain DC conversion gain Noise equivalent power Bandwidth DC to 15 GHz at 1310 nm 20 at 1550 nm 20 nm SD 44 Instruction Manual Certificate Number RH Technician 0 035 V mW 0 035 V mW attach plot Maximum 1 mV N A N A Welec calculated N A 17 a l Replaceable Parts For information about replaceable parts contact your Tektronix sales representa tive 9 T 9 Figure 6 50 44 replaceable parts 18 SD 44 Instruction Manual Repla
15. ing Tektronix iv Getting Started te ee te eater ss 1 Standard Accessories 2 OPHONS sur pe ah dy Pha tg i dt pi a e Be 2 Optional Accessories 2 Installation o Gita i ott Skee aR eet dater 2 3 Operating Basics se sie cece esc ees Obes ce oo ete see ee asa 7 Handling ea 7 Cleaning Optical Connectors 7 Connecting Optical Signals 8 Attenuating Optical Signals 9 Specifications aa act ee ale da ace acea 10 Performance Verification 12 Equipment Required 12 Outpui Zero zeita ean Dot tat ca DM 200000 85 2000230 ne 13 DG Conversion Gain BR nau a ae ER 13 Noise Equivalent Power 15 Bandwidth Frequency Response 15 Replaceable ee ce ion ae e aaa osent 18 SD 44 Instruction Manual i gt mi mm General Safety Summary To Avoid Fire or Personal Injury Symbols and Terms A A Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as sp
16. mage from ESD take the following precautions Always wear an anti static wrist strap when handling a static sensitive instrument Keep the short circuit termination in place when moving or storing the instrument Remove the termination only to connect a cable Discharge the inner conductor of a loose unterminated cable before connecting it to the instrument Getting Started 1 Switch off the measurement instrument 2 Place the module in a compartment and slowly push it in with firm pressure 3 Once the module is seated turn the screw shaft on the plug in to tighten the module in place 4 Switch on the measurement instrument and check that all modules have power 5 Remove the termination on the output of the O E converter and connect the output to the lower input of the sampling head as follows a Use the rigid connector if possible and install the shorter leg of the connector on the sampling head See Figure 2 b Align the SMA connectors carefully c Use light finger pressure to turn the nut Do not turn the cable d Tighten the nut lightly with a wrench For best repeatability and to prolong the life of SMA connectors use a torque wrench and tighten the connection to the range of 7 to 10 Ib in 79 to 112 N cm SA has o Sa lle Shorter leg lt Sampling head gt was OJE converter Figure 2 Using the rigid connector SD 44 Instruction
17. me lt 1 us The O E converter under test and the test equipment and should be warmed up for 20 minutes at an ambient temperature between 20 and 30 C 1 Attach the output of the SD 44 to the voltmeter inputs with a 50 Q termina tion and BNC to banana adapter 2 Install the optical dust cover on the input of the SD 44 3 Check that output voltage is lt 1 mV Record the result on the test record NOTE Make sure that the optical connector ends of both the fiber from the optical attenuator output and the SD 44 under test input fiber are well cleaned before performing this step See to the cleaning instructions on page 7 1 Connect the 1310 nm laser source to attenuator input 13 Performance Verification NOTE The longer wavelengths of 1310 nm and especially 1550 nm in single mode fiber are sensitive to loss in fiber due to bending of the fiber The fiber bend radius of the SD 44 fiber input should lay with gt 1 5 inch bend radius along the fiber s entire length Although this precaution must be maintained throughout the entire performance verification procedure it is especially important for this step in order to accurately adjust and measure the DC conversion gain of the SD 44 2 Connect the optical attenuator output to the optical power meter using single mode optical cable with FC connectors Use the appropriate optical power meter sensing head with calibrated measurement for a wavelength span including
18. nce for this product you may do so at any time during the product s warranty period Service Assurance provides Repair Protection and Calibration Services to meet your needs Repair Protection extends priority repair services beyond the product s warranty period you may purchase up to three years of Repair Protection Calibration Services provide annual calibration of your product standards compliance and required audit documentation recall assurance and reminder notification of scheduled calibration Coverage begins upon registration you may purchase up to five years of Calibration Services Service Assurance Advantages m Priced well below the cost of a single repair or calibration m Avoid delays for service by eliminating the need for separate purchase authorizations from your company m Eliminates unexpected service expenses For Information and Ordering For more information or to order Service Assurance contact your Tektronix representative and provide the information below Service Assurance may not be available in locations outside the United States of America Name VISA or Master Card number and expiration Company date or purchase order number Address Repair Protection 1 2 or 3 years City State Postal code Calibration Services 1 2 3 4 or 5 years Country Instrument model and serial number Phone Instrument purchase date Table of Contents General Safety Summary ii Contact
19. necting Optical Signals Attach the fiber optic cable with an FC PC connector to the FC PC input receptacle as follows 1 Carefully align the keyway on the receptacle with the key on the connector 2 Tighten the nut lightly with finger pressure only The input of the SD 44 O E converter can couple to optical fibers with a core diameter of up to 9 um Alternate types can be coupled by use of an FC FC jumper and the FC FC FC ST FC SC adapters Refer to Optional accessories on page 20 CAUTION To maintain the high performance low return loss of the optical interface connect an adapter and cable between the input of the O E converter and the device under test When you make connections to other devices leave the adapter and cable in place to protect the optical interface of the O E converter from wear SD 44 Instruction Manual Operating Basics If you connect fiber cores larger than 9 um the O E converter may still couple light but the mismatch in core diameter will cause lower conversion gain and higher insertion loss Attenuating Optical Signals To keep the optical input power to an appropriate level it may be necessary to attenuate the optical signal attenuate optical signals to less than 5 mW average power or 10 mW peak power CAUTION To avoid damaging the optical input of the SD 44 O E converter at the wavelength with highest relative responsivity For linearity and measurement accuracy attenua
20. page 20 Figure 1 shows the front panel of the SD 44 O E converter Ce Screw lock knob Green LED power gt O Electrical signal output connector SMA Optical signal input connector FC PC Figure 1 SD 44 front panel The SD 44 O E converter has an FC PC receptacle for optical signal input and a precision 3 5 mm connector for electrical signal output The following list highlights the key performance characteristics of the SD 44 O E converter 1000 to 1650 nm wavelength response m 15 GHz Minimum Transducer Bandwidth m 35 mV mW of DC conversion gain at 1310 and 1550 nm For a complete list of specifications see to page 10 Getting Started Standard Accessories Options Optional Accessories The following accessories are standard with every SD 44 O E converter m Hard case Instructions m FC PC to FC PC 9 um single mode fiber jumper m FC ST FC SC and FC FC hybrid connectors um Rigid cable SMA to SMA 50 Q m SMA terminator u Certificate of traceable calibration For a list of replaceable part numbers see page 18 The following options are available at the time of purchase m Opt 95 Calibration data m Opt C3 Three years calibration services m Opt R3 Three years extended warranty The following recommended accessories are available through Tektronix m Fiber optic cables and adapters with a variety of fiber types and connector styles m
21. t connectors when the O E converter is not in use Cleaning Optical Connectors A SD 44 Instruction Manual Small dust particles and oils can easily contaminate optical connectors and reduce or block the signal Take care to preserve the integrity your connectors by keeping them free of contamination CAUTION To prevent loss of optical power or damage to the optical connectors keep the connectors clean at all times When cleaning the connectors with a swab use gentle circular motions Use only high quality cleaning supplies that are non abrasive and leave no residue To reduce the need for cleaning immediately replace protective caps on the optical connectors when not in use Operating Basics Equipment Required Procedure Use the following items to clean the optical connectors u clean compressed air m fiber optic cleaning swabs isopropyl alcohol To clean the optical connectors follow these steps 1 Hold the can of compressed air upright and spray the can into the air to purge any propellant 2 Spray the clean compressed air on the connectors to remove any loose particles or moisture 3 Moisten a clean optical swab with isopropyl alcohol then lightly swab the surfaces of the connectors 4 Spray the clean compressed air on the connectors again to remove any loose particles or isopropyl alcohol NOTE Cleaning kits for optical connectors are available from a number of suppliers Con
22. te the peak to peak swing of signal to within the specified performance of 200 uW SD 44 Instruction Manual Specifications This section contains the specifications for the SD 44 Optical to Electrical Converter All specifications are guaranteed unless noted as typical Typical specifications are provided for your convenience but are not guaranteed Specifications marked with the symbol have corresponding checks in the Performance Verification section on page 12 Table 1 SD 44 Specifications Specification Description Effective wavelength range typical 1000 nm to 1650 nm DC conversion gain gt 35 mV mW at 1310 nm 20 nm and 1550 nm 20 nm Relative responsivity typical See Figure 5 Absolute maximum nondestructive optical input 5 mW average power 10 mW peak power at wavelength with highest relative responsivity Bandwidth DC to 15 GHz gt 6 dB electrical power into 50 Q for signals lt 2 mW Input fiber diameter Accepts 9 um singlemode diameter Numerical Aperture NA lt 0 20 Internal fiber diameter Fiber connector style Optical return loss p Noise equivalent power Impulse response width Aberrations 17 Output zero External termination impedance Temperature Humidity Altitude 10 core 9 um single mode fiber cladding 125 um female FC PC gt 30 dB typical gt 28 dB minimum when external mating fiber is also PC style lt 15 pW Hz electrical output noise
23. when terminated into 50 lt 30 ps FWHM Full Width Half Maximum lt 10 p p total lt 1 50Q 20 Operating 10 C to 405 C Non operating 55 to 75 75 non condensing Operating 4 572 m 15 000 ft Non operating 15 240 m 50 000 ft SD 44 Instruction Manual Specifications 1 10 1 00 0 90 0 80 0 70 0 60 Relative conversion gain 0 50 0 40 0 30 1000 1200 1400 1600 Wavelength nanometers Figure 5 SD 44 relative responsivity normalized to 1310 nm SD 44 Instruction Manual 11 Performance Verification Equipment Required 12 Use the following procedures to verify the warranted specifications of the SD 44 Optical to Electrical Converter Before beginning these procedures see page 17 and photocopy the test record and use it to record the performance test results The recommended certification interval is one year These procedures test the following specifications m Noise equivalent power m Output zero m DC conversion gain m Bandwidth Frequency Response Table 2 lists the equipment required to perform the performance verification procedure The types and quantities of connectors may vary depending on the specific equipment you use Table 2 Test equipment Description Minimum requirements Example product Optical power meter with Accuracy gt 2 5 resolution gt HP 8153A with head
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