SC- and FC-Type Singlemode and Multimode Simplex and Duplex Connector Kits Instruction Sheet 408-8674 29 OCT 08 Rev F Simplex Connector Kit Bend Limiting Boot Buffer Boot Heat Shrink Assembly Housing Protective Cover Connector Subassembly Housing Protective Boots Cover Crimp Eyelets Duplex Connector Kit Connector Subassemblies Housing Protective Cover Duplex Clip Figure 1 1. INTRODUCTION This instruction sheet covers the application of all SC- and FC-type Singlemode, Multimode, Simplex, and Duplex Connector Kits. See Figure 1. These connectors are used in telephone company central offices, CATV head-ends, inter-building backbones and customer premise applications. This instruction sheet covers the termination of the connector kits (shown in Figure 1) to fiber optic cable. These connector kits are available for termination to 250-mm coated and 900-mm buffered fiber, 1.6- to 2.4-mm and 3.0-mm jacketed cable. With the use of a field-installable clip, all simplex connectors can be joined into a duplex form. NOTE Throughout this instruction sheet, references Read these instructions thoroughly before starting assembly. NOTE Dimensions in this instruction sheet are in millimeters [with inches in brackets]. Figures are i not drawn to scale. 2. DESCRIPTION (Figure 1) Each SC-type connector kit consists of a housing, a protective cover, a connector subassembly, and either a crimp eyelet and boot or a buffer boot. Each FC-type connector kit consists of a housing, protective cover, a connector subassembly, and either a crimp eyelet and boot or a buffer boot. made to connectors will include both the SC- and i FC-type connectors, unless otherwise specified. E 2008 Tyco Electronics Corporation, Harrisburg, PA All International Rights Reserved Refer to Figure 1 for component descriptions and related connector kit information. TOOLING ASSISTANCE CENTER 1-800-722-1111 This controlled document is subject to change. PRODUCT INFORMATION 1-800-522-6752 For latest revision and Regional Customer Service, TE logo and Tyco Electronics are trademarks. *Trademark. Other products, logos, and company names used are the property of their respective owners. visit our website at www.tycoelectronics.com 1 of 12 LOC B 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits 3. ASSEMBLY PROCEDURE NOTE Refer to manufacturers Material Safety Data Sheet (MSDS) for characteristics, reactivity data, 3.1. Required Tools and Consumables i The following tools and consumables are required for assembling the connector kits (the 408 numbers in parentheses indicate the related instruction sheet). NOTE Kits are provided with a protective cover installed onto the connector subassembly. Keep the cover i in place until ready for installation. and handling of the epoxy. -- Epoxy Applicator Kit 501473-3 -- Alcohol pads or isopropyl alcohol and lint-free cloths -- 5-mm Polishing Film 228433-8 -- 1-mm Polishing Film 503887-1 -- 0.3-mm Polishing Film 228433-5 A. Tools -- Combination Strip Tool 1754708-1 or 1278947-1 (408-4577) 3.2. Fiber Preparation (Strip and Dip) -- Aramid Shears 1278637-1 -- Cable Preparation Template 1754636-1 DANGER -- SC Fiber Protector 502656-1 To avoid personal injury, ALWAYS wear eye protection when working with optical fibers. NEVER look into the end of terminated or -- FC Fiber Protector 502862-1 unterminated fibers. Laser radiation is invisible -- Fiber Optic Sapphire Scribe Tool 504064-1 (408-4293) but can damage eye tissue. Never eat, drink, or smoke when working with fibers. This could lead to ingestion of glass particles. -- LC/ SC/FC 1.6-2.4-mm Jacket Die Set 1588175-1 -- SC/FC 3.0-mm Long Eyelet Die Set 492025-1 DANGER BE VERY CAREFUL to dispose of fiber ends properly. The fibers create slivers that can easily puncture the skin and cause irritation. -- SC/FC 3.0-mm Short Eyelet Die Set 492131-1 -- PRO-CRIMPER* II Hand Tool Frame Assembly 58532-1 (408-4020) -- Heat Cure Oven 502134-1 (120V) or 502134-2 (240V) (408-9460) -- Oven Block Assembly 1457628-1 -- Epoxy Mixer 501202-1 -- Fiber Optic Inspection Microscope 1754767-1 (adapter included) -- SC Polishing Bushing 502631-1 mm Coated Fiber and 900-mm Buffered Fiber A. 250- 1. Slide the buffer boot (small diameter end first) onto the fiber buffer. See Figure 2, Detail A. 2. Using the combination strip tool, strip the coated or buffered fiber according to the dimensions shown in Figure 3. NOTE This operation will expose the glass cladding. -- FC Polishing Bushing 504862-1 i -- Polishing Plate 501197-1 -- Polishing Pad 501858-1 (Green Pad) B. Consumables t t -- Epoxy, EPO-TEK 353-ND 504035-1, or anaerobic adhesive and anaerobic primer (LOCTITE 648 Anaerobic Adhesive and LOCTITE Activator 7649 are recommended, respectively, replacing the manufacturer-obsoleted 3405 LOCTITE OPTILOC Anaerobic Adhesive Primer) EPO-TEK is a trademark of Epoxy Technology Inc. LOCTITE and OPTILOC are trademarks of Henkel Corporation 2 of 12 3. Clean the glass cladding using the alcohol pad or lint-free cloth dampened with alcohol to remove any coating residue. CAUTION NEVER clean buffer or fiber with a dry cloth. ! NOTE For best results, the primer must be applied properly and allowed to dry. i Tyco Electronics Corporation Rev F 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits B. 1.6- to 2.4-mm and 3.0-mm Jacketed Cable Detail A: Preparing Coated/Buffered Fiber 1. Slide the boot (small diameter end first) onto the cable. Then slide the heat shrink assembly (heat shrink end first) or crimp eyelet onto the cable. Buffer Boot Fiber Bend Limiting Boot S Refer to Figure 2, Detail B for heat-shrink installation. S Refer to Figure 2, Detail C for crimp eyelet installation NOTE If duplex cord is used, unzip the jacket into separate cords at least 230 mm [9.0 in.] from the Detail B: Preparing 1.6-mm to 2.4-mm Jacketed Cable i cable end. 2. Using the combination strip tool and Aramid shears, strip the cable according to the dimensions shown in Figure 4. Boot Heat Shrink Cable Detail C: Preparing 3.0-mm Jacketed Cable A Crimp Eyelet Cable Figure 2 4. If terminating with anaerobic adhesive, dip the fiber and buffer into the primer or apply to the buffer and fiber with a brush. Allow 30 seconds for the primer to dry. NOTE: Not to scale. Dimensions are in millimeters. Figure 4 NOTE This operation will expose the glass cladding. i A 3. Clean the glass cladding using the alcohol pad or lint-free cloth dampened with alcohol to remove any coating residue. CAUTION NEVER clean buffer or fiber with a dry cloth. ! NOTE: Not to scale. Dimensions are in millimeters. Figure 3 Rev F 4. If terminating with anaerobic adhesive, dip the fiber and buffer into the primer or apply with the brush, allowing 30 seconds for the primer to dry. Tyco Electronics Corporation 3 of 12 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits NOTE For best results, the primer must be applied properly and allowed to dry. i until the entrapped air escapes and a bead of epoxy appears at the tip. Remove the cap. 4. Clean the tip of the applicator needle using the alcohol pad or alcohol-dampened lint-free cloth. 3.3. Selection, Preparation, and Application of D. Application of Adhesive/Epoxy Adhesive/Epoxy NOTE A. Selection A 20 gage syringe is recommended for epoxy application. S The recommended anaerobic adhesive is easy to use and is packaged in two bottles -- adhesive and primer. It will cure at 22 C [71.6 F] in approximately three minutes. S The recommended epoxy is easy to work with and is packaged in pre-measured components. It will cure in approximately 30 minutes at 120 C [248 F]. B. Preparation of Anaerobic Adhesive 1. Install the needles on the two applicators, making sure they are secure. 2. Remove the plunger from one of the applicators and load adhesive into the back. 3. Replace the plunger. i 1. Remove the protective cover and attach the appropriate cure protector, as shown in Figure 5, for buffer or jumper connector subassemblies. Cure protectors are not required for use with anaerobic adhesive. 2. Hold the connector subassembly in an upright position. Insert the needle tip into the rear body and support tube until the needle tip touches the bottom of the ferrule. See Figure 6. 3. Keeping the base of the ferrule against the needle tip, slowly inject adhesive/epoxy into the connector subassembly until a small bead of adhesive/epoxy exits from the endface of the ferrule at the front of the connector. 4. Holding the applicator vertically (needle upward), allow the adhesive to drain away from the needle and slowly push the air out of the applicator until a bead of adhesive appears at the tip of the needle. 5. Using the second applicator for primer (with the plunger fully forward), draw a small amount (approximately three-to-five ml) of primer into the applicator. SC-Type Connector C. Preparation of Epoxy 1. Remove the separating clip from the epoxy bag and, using the epoxy mixer, mix the epoxy inside the bag thoroughly for two minutes. FC-Type Connector NOTE When mixed properly, the epoxy should have a uniform, translucent, amber color. i 4 2. Using the epoxy applicator kit, install the needle tip onto the epoxy applicator. Make sure that the tip is secure. Remove the plunger. Figure 5 3. Cut the epoxy bag diagonally at one corner. Squeeze the epoxy into the back of the applicator. Reassemble the plunger. Loosen, but do not remove, the cap. Hold the applicator vertically (needle tip upward), and slowly push the plunger 4. Retract the applicator slightly (approximately 1.0 mm [.04 in.]). Hold for one second, then withdraw the applicator needle quickly without injecting more adhesive/epoxy into the connector subassembly. of 12 Tyco Electronics Corporation Rev F 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits Endface of Ferrule B. 1.6- to 2.4-mm Jacketed Cable Applying Adhesive/Epoxy 1. While holding the connector between the thumb and forefinger (with the ferrule facing away), look into the back, where the fiber is to be placed. Front of Connector Ferrule Support Tube 2. Carefully insert the fiber into the rear body and support tube (which is recessed inside the connector subassembly) until the buffer bottoms on the base of the ferrule. With the buffer bottomed, the cable jacket should be just short of the rear body. The fiber should extend approximately 6.4 mm [.25 in.] from the ferrule endface. CAUTION DO NOT allow the cable strength members to enter the connector. ! Applicator Needle Rear Body of Connector 4. Slide the heat shrink assembly forward over the cable strength members until the crimp eyelet bottoms against the connector. See Figure 7, Detail B. Figure 6 CAUTION If too much epoxy is injected into the connector subassembly, the connector subassembly will not ! 3. Uniformly distribute the cable strength members around the rear body of the connector. See Figure 7, Detail A. function properly. 5. Place the crimp eyelet of the heat shrink assembly into the crimping chamber of the die assembly. Align the back of the connector with the edge of the die as shown in Figure 8. 6. Hold the connector subassembly in place and actuate the tool handle. This operation retains the strength members. 3.4. Termination of the Fiber A. 250-mm Coated Fiber and 900-mm Buffered Fiber 1. While holding the connector between the thumb and forefinger (with the ferrule facing away), look into the back, where the fiber is to be placed. 2. Carefully insert the fiber into the support tube (which is recessed inside the connector subassembly) and rear body until the buffer bottoms on the base of the ferrule. The fiber should extend approximately 6.4 mm [.25 in.] from the ferrule endface. 3. For parts terminated with anaerobic adhesive, dispense a drop of primer from the applicator onto the tip of the ferrule over the adhesive bead, and set the part aside to allow the adhesive to finish curing (approximately one to three minutes). Proceed to Paragraph 3.6. 7. Remove the assembly from the hand tool and inspect it for a straight and even crimp. Be sure the crimp is centered on the crimp eyelet. 8. For parts terminated with anaerobic adhesive, dispense a drop of primer from the applicator onto the tip of the ferrule over the adhesive bead and set the parts aside to allow the adhesive to finish curing (approximately one to three minutes) Heat the shrink tubing evenly and shrink it into place. CAUTION Overheating can cause fiber bending, breakage, and high insertion loss. ! NOTE For best results, the adhesive must be applied correctly and allowed to dry. NOTE For best results, the adhesive must be applied correctly and allowed to dry. i Rev F i 9. Proceed to Paragraph 3.6. Tyco Electronics Corporation 5 of 12 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits Detail A C. 3.0-mm Jacketed Cable 1. While holding the connector between the thumb and forefinger (with the ferrule facing away), look into the back, where the fiber is to be placed. Cable Strength Members Uniformly Distributed Detail B 2. Carefully insert the fiber into the rear body and support tube (which is recessed inside the connector subassembly) until the buffer bottoms on the base of the ferrule. With the buffer bottomed, the cable jacket should be just short of the rear body. The fiber should extend approximately 6.4 mm [.25 in.] from the ferrule endface. CAUTION Do NOT allow the strength members to enter the connector. ! Heat Shrink Assembly 3. Uniformly distribute the cable strength members around the rear body of the connector. See Figure 7, Detail A. Detail C 4. Slide the crimp eyelet forward over the cable strength members until it bottoms against the connector. See Figure 7, Detail C. NOTE Be SURE to use the proper crimp die-set with the appropriate eyelet. See Figure 9. i Crimp Eyelet 5. Place the crimp eyelet into the appropriate crimping chamber of the die assembly. Align the edge of the large diameter end of the crimp eyelet with the edge of the die, as shown in Figure 10. Figure 7 6. Hold the connector in place and actuate the tool handle. This operation retains the strength members. Crimping Heat Shrink Assembly Crimp Eyelet in Crimping Chamber Long Eyelet Short Eyelet Heat Shrink Assembly Back of Connector Aligned with Edge of Die Use Die-Set 492026-1 Use Die-Set 492131-1 Figure 9 Figure 8 6 of 12 7. For parts terminated with anaerobic adhesive, dispense a drop of primer from the applicator onto the tip of the ferrule over the adhesive bead. Tyco Electronics Corporation Rev F 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits Hand Tool Frame with Die Assembly Cable Holder NOTE: Simplex Jumper Connector Kit shown. Oven Block Assembly Large Diameter End of Crimp Eyelet Aligned with Edge of Die NOTE: SC-type connector shown. Crimp procedure is the same for FC-type connectors. Figure 10 Heat Cure Oven 8. Set the parts aside to allow the adhesive to finish curing (approximately one to three minutes). Proceed to Paragraph 3.6. NOTE Figure 11 For best results, the adhesive must be applied correctly and allowed to dry. i Pull After Cleave 3.5. Curing Epoxy Terminated Parts CAUTION BEFORE CURING, make sure all excess epoxy is removed from the connector subassembly; it ! Excess Fiber will be difficult to remove epoxy after curing. Epoxy/Adhesive Bead Tool Tip 1. Insert the connector subassembly (with attached cure protector) into the cure oven as shown in Figure 11. Heat cure the epoxy at 115_ to 120_C [239_ to 257_F] for a minimum of 15 minutes. For jumper connector kits, this operation will shrink the heat shrink assembly. CAUTION To avoid damage to the assembly, DO NOT Connector Tip Figure 12 3.6. Cleaving the Fiber DANGER ALWAYS wear safety glasses when cleaving optical fibers. CAREFULLY DISPOSE OF FIBER expose assembly to excessive temperatures. ENDS. The fibers create slivers that can easily ! puncture the skin and cause irritation. 2. After curing, use the cable to gently lift the assembly out of the oven. CAUTION Cleave Tool Upon removal from the cure oven, the assembly 1. If using a fiber protector, rotate it to remove it, then hold the connector subassembly firmly in one hand. will be HOT. Allow sufficient time for cooling. ! Rev F 2. Place the sapphire cutting tip just above the epoxy/adhesive, as shown in Figure 12. Tyco Electronics Corporation 7 of 12 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits CAUTION Do NOT allow the sapphire cutting tip to make 4. POLISHING PROCEDURES contact with the epoxy or adhesive, as they may ! damage, chip, or crack the sapphire cutting tip. 4.1. Hand Polishing NOTE For best results, the polishing films MUST be kept clean. 3. Gently score the fiber by drawing the beveled edge of the sapphire blade across the fiber. 4. After lightly scoring the fiber, pull the fiber straight away from the connector to finish the cleave process. The fiber should shear cleanly at the scribe point. 3.7. Assembly of the Connector 1. To level the fiber, lightly polish the end face with hand-held 5-mm polishing film (air polish). Use a small circular motion to remove the fiber stub down to the level of the epoxy/adhesive and until the fiber stops leaving a trace on the film. 2. Install the connector into polishing bushing. See Figure 15. 1. Slide the boot forward until it touches the rear of the connector body. CAUTION i 3. Place the polishing pad on the polishing plate. The remainder of the polishing procedure is performed on this pad and plate. Avoid twisting the boot while sliding it over the crimp eyelet. Permanent damage could result. ! Buffer Connector Kit (Simplex Shown) Buffer Boot Against Rear Body See Figure 13. (The FC type connector is complete. Proceed to Section 4, POLISHING PROCEDURES.) 2. For SC-type connectors, slide the connector housing over the connector assembly until it clips into place. The chamfer must be aligned as shown in Figure 14, Detail A. For duplex SC-type connectors, identify the channel "A" connector. 1.6- to 2.4-mm Jumper Connector Kit NOTE If the polarity is undetermined, light up one fiber (Simplex Shown) path. One of the two connectors should be i illuminated. Designate the lit channel as Bend-Limiting Boot Against Rear Body Channel A" and the other as Channel B." 3. Install the duplex housings accordingly. Be sure to orient the resilient beam and retention plate housings as shown in Figure 14, Detail B. NOTE Do NOT join the two halves together at this time. 3.0-mm Jumper Connector Kit i NOTE (Simplex Shown) For buffer fiber applications, the SC-type duplex insertion tool must be used to assemble the i connector housing and the connector Boot Against Rear Body subassembly. Figure 13 8 of 12 Tyco Electronics Corporation Rev F 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits Detail A Plug Body Connector Housing Chamfer Must be Aligned amount of exposed fiber will be worn away. This is indicated by a narrow white trace on the film. As the exposed fiber wears away, the trace will widen and darken, indicating that adhesive/epoxy is being removed. At this point, a slight downward force may be applied while polishing. Check the tip often and stop polishing on the 5-mm film when the adhesive/epoxy is medium red-pink and about one-third the ceramic ferrule diameter in size. CAUTION When polishing ceramic ferrule connectors, it is essential that not all of the adhesive/epoxy is m removed when using the 5- ! Connector Subassembly Detail B m film. 6. Clean the polishing bushing and connector assembly with an alcohol pad. Retention Plate Housing Figure-8 Pattern Chamfer Key Resilient Beam Housing Figure 14 Polishing Bushing Figure 16 7. Remove the 5-mm film from the polishing pad and replace it with the 1-mm film. 8. Holding the connector and polishing bushing, polish on the 1-mm film for about 20 seconds. 9. Clean the polishing bushing and connector assembly with an alcohol pad. Figure 15 4. Place the 5-mm polishing film on the polishing pad. CAUTION Always place the polishing bushing on a clean 10. Remove the 1-mm film from the polishing pad and replace it with the 0.3-mm film. 11. Hold the connector and polishing bushing. Using light force, polish on the 0.3-mm film until the adhesive/epoxy is gone. Do not overpolish. area of the polishing film. Never start polishing on ! 12. Clean the polishing bushing and connector assembly with an alcohol pad. or across a dirty section of the film. 5. Holding the polishing bushing and connector, start polishing very lightly. Polish in an elongated figure-8 pattern. See Figure 16. Initially, a small Rev F 4.2. Machine Polishing Refer to the polishing machine manufacturer for recommended polishing process. Tyco Electronics Corporation 9 of 12 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits 5. INSPECTING THE FIBER 6. DUPLEX CONNECTOR ASSEMBLY Using the microscope, inspect the fiber for the following criteria (refer to Figure 17): 6.1. Duplex Housings NOTE DANGER Disconnect cable from any power signal source before inspecting. The light used can cause injury Once joined, the resilient beam and retention plate housings are NOT separable. i to the eye. 1. The retention plate housing will retain the resilient beam housing when the two are joined. S Be sure all epoxy/adhesive is removed from the ferrule. Use a sharp blade to remove epoxy/adhesive from the chamfered edge of the ferrule. DO NOT touch the fiber. S Dirt may be mistaken for small pits. If dirt is evident, clean with an alcohol pad or alcohol-dampened lint-free cloth, and then dry. S Fine polishing lines are acceptable. S Small chips at the outer rim of the fiber are acceptable. Large chips in the center of the fiber render the polish unacceptable, and the fiber must be re-terminated. NOTE If not installing the connector immediately, place the protective cover over the ferrule. Figure 18 i CAUTION Damaged components must not be used. They must be replaced with new components. ! Join the two housings by holding the resilient beam housing and sliding the retention plate housing over the beams until they latch in place. See Figure 18. 2. Figure 19 shows a completely assembled multimode duplex connector. Acceptable Ferrule Endface Small Peripheral Chips Permissible Fiber Fine Polishing Lines Unacceptable Scratches Figure 19 6.2. Duplex Clip (For Use with Simplex Connector Housing Only) Large Pits Figure 17 10 of 12 1. Place the simplex connector housings in one half of the duplex clip. See Figure 20. 2. Place the other half of the duplex clip over the housings and snap the two clips together. See Figure 20. Tyco Electronics Corporation Rev F 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits NOTE If both connectors are not removed, blow compressed air into the open end of the i receptacle. 2. Re-mate the connector(s) to the receptacle following the procedures in Paragraph 7.1. NOTE Steps 7.1 and 7.2 may have to be repeated if the connector loss is still too high. i 8. RECOMMENDED TUNING PROCEDURES Figure 20 7. CLEANING PROCEDURES DANGER To avoid personal injury, compressed air used for cleaning must be reduced to less than 207 kPa [30 psi], and effective chip guarding and personal protective equipment (including eye protection) Tuning Tool 1693383-1 is used to rotate the ferrule into the position of lowest loss. The tool has numbered flats, spaced every 60 degrees that are used to identify the position of the ferrule. The end of the tool has a machined key that will engage into the ferrule in only one position. The corresponding number that matches up with the key on the connector identifies the the current tuning position. must be used. 8.1. Setup 7.1. Connector 1. Wipe completely around the ferrule with an alcohol pad or lint-free cloth dampened with isopropyl alcohol. 2. Wipe completely around the ferrule using a dry lint-free cloth. 3. Place the dry lint-free cloth on a smooth, flat surface. Holding the connector perpendicular, wipe the ferrule endface across the cloth. 4. Blow compressed air across the endface of the ferrule. Before testing a connector, insert the tuning tool into the front of the connector, to obtain the "initial tuning position." Note this position. Inspect the ferrule for dirt and debris. DANGER unterminated optical fibers. Laser radiation is invisible, but can damage the eye. CAUTION Damage will occur to the ferrule if the tool is rotated without the tool being bottomed all the ! 5. Examine the endface for debris, using the microscope. If debris is present, repeat Steps 1 through 4. CAUTION NEVER look into the end of terminated or way toward the connector. Damage may occur to the cable assembly if the ferrule is rotated more than 180 degrees (three tuning positions) in either the clockwise or the counterclockwise direction. This is the final step prior to connector insertion. DO NOT wipe the ferrule or allow it to touch ! anything before mating the connector. 8.2. Tuning Operation 1. Mate the offset end of the tuned launch lead to the connector to be tuned using a ceramic sleeve adapter. 6. Mate the connector to the receptacle. 7. If the attenuation is too high, unmate both connectors (if applicable), repeat Steps 1 through 5, and follow procedures in Paragraph 7.2, Receptacle. 7.2. Receptacle 1. Blow compressed air through the receptacle. Rev F 2. Record the power level of the detector. 3. Unmate the connector and insert the tuning tool to the previously noted (initial tuning) position. 4. Press the tuning tool axially toward the connector until it bottoms and rotate it clockwise one numerical position, or 60 degrees. Tyco Electronics Corporation 11 of 12 408-8674 SC- and FC-Type Singlemode and Multimode Connector Kits NOTE 5. Release the tool and remove it. 6. Repeat steps one through five, for a total of three tuning positions. Be sure not to exceed 180 degrees of rotation from the original position. i 7. After the third tuning measurement is taken, tune the connector counterclockwise five positions. 8. Repeat steps one through five for the other three tuning positions. 9. Tune the connector as described in steps two through five to the position of greatest power (lowest loss), going in the direction of least rotation. 12 of 12 9. REVISION SUMMARY Revisions to instruction sheet 408-8674 include: S Updated document to corporate requirements S New format Tyco Electronics Corporation Rev F