Broadband Applications & Construction Manual Trunk & Distribution Cable Products
Table of Contents Trunk & Distribution Cable Applications and Construction Manual Table of Contents Section 1.................Introduction 1.1 ACT® - Advanced Coring Technology 1.2 ACT® - Advanced Coring Technology 1.3 P3 Design Details and Advantages 1.4 QR Design Details and Advantages 1.5 MC2® Design Details and Advantages Section 2.................Handling and Testing 2.1 Inspection 2.2 Unloading 2.3 Storing and Stacking Reels 2.4 Storing and Stacking Reels 2.
0.1 Table of Contents Trunk & Distribution Cable Applications and Construction Manual Section 5.................Underground Installation 5.1 Overview 5.2 Pulling Tension 5.3 Bending Radii 5.4 Vibratory Plowing 5.5 Vibratory Plow Movement 5.6 Trenching 5.7 Boring and Ductwork 5.8 Conduit Section 9.................Connectorization 6.1 ACT® - Advanced Coring Technology 6.2 ACT® - Advanced Coring Technology 6.3 ACT® - Advanced Coring Technology 6.
Introduction ACT® - Advanced Coring Technology Advanced Coring Technology ® Another CommScope Innovation...Setting a New Standard in Cable Technology! • • • • • Enhanced Mechanical Performance Meets/Exceeds ANSI/SCTE, EN50117, IEC and Cenelec Fully Backward Compatible Identical in Electrical Performance Patent Pending Traditional coaxial trunk and distribution cables require considerable attention to the preparation of the cable end for proper connectorization.
1.2 Introduction P3 Design Details and Advantages Advanced Coring Technology ® P3® with ACT® and QR® with ACT®cables were developed to address a question that has been clearly stated and often repeated by the craftsmen, engineers, and technical operations managers of the broadband industry. Why must a hardline cable be so difficult and problematic to properly core and prep? Before the introduction of ACT cables, craftsmen struggled with the cleaning of the center conductor.
Introduction ACT® - Advanced Coring Technology P3® - Traditional Reliability P3 is the standard by which all coaxial cables are measured. The P3 center conductor is copper-clad aluminum for superior RF transmission. The P3 dielectric is a closed-cell polyethylene that is compressed during the swaging process. Compression provides superior bending. The closed-cell nature of the dielectric permits an impressively high velocity of propagation of 87%.
1.4 Introduction QR Design Details and Advantages QR® - Superior Design and Construction QR’s patented design combines several elements to achieve its unparalleled combination of superior performance in a smaller, less expensive cable. The QR center conductor is copper-clad aluminum for superior RF transmission and is generally larger than the conductors found in competitive cable of similar outer diameter. The QR dielectric is a closed-cell polyethylene that is compressed during the swaging process.
Introduction MC2 Design Details and Advantages MC2® - Supporting Legacy Plant MC2 is offered to sustain plants designed and built around this cable. The MC2 center conductor is copper clad aluminum The MC2 dielectric is an air disk structure, often referred to as bamboo cable, it provides for low attenuation values. The MC2 shield is a roll formed aluminum tape welded by RF induction.
2.1 Handling and Testing Inspection Inspecting and Unloading CommScope Cables Trouble-free unloading begins with letting your CommScope Customer Service Representative know of any special packaging or delivery requirements (no shipping dock available, call before delivery, etc.). CommScope will make every reasonable effort to comply with your shipping needs. When the shipment arrives, inspect every reel and pallet of material for damage as it is unloaded.
Handling and Testing Unloading Unloading CommScope Cable Unloading at a Dock Use a pallet jack or forklift to remove all cable on pallets. Remove any blocking materials for the individual rows of cable and roll the reels onto the dock. If the back of the trailer and dock are not at the same height, use an appropriate loading ramp to compensate for the difference.
2.3 Handling and Testing Storing and Stacking Reels Storage and Stacking CommScope Reels CommScope cable can be stored indoors or outdoors, and the cable may be stacked on flange or stored upright on the rolling edge. Use a forklift or some type of overhead hoist to stack cable. When cable is stored outside, the ground should be somewhat level and have good drainage to reduce the possibility of deterioration of the reel flanges. CommScope’s reel recycling program only accepts reels in good condition.
Handling and Testing Storing and Stacking Reels Testing CommScope Cables While testing reels of CommScope cables after delivery is not required, testing prior to, during and after construction will identify any degradation in the performance of the cable caused during installation.
2.5 Handling and Testing Impedance/TDR Testing Impedance/TDR (Time Domain Reflectometer) Testing Impedance testing using a TDR is a quick and straightforward method for finding the distance from the test point to any fault (shown as an impedance mismatch) in the cable. Impedance tests should be made from both ends of the cable to ensure finding the correct distance to fault.
Aerial Installation Overview Aerial Installation of CommScope Cable There are two cable types built specifically for aerial installation: QR/P3 JCA the standard construction, available in five sizes for trunk and feeder installation, to be lashed to a strand or support wire, and QR/P3 JCAM standard construction with a messenger extruded in place in a figure-8 design. The two preferred methods for installation are the back-pull/stationary reel method and the drive-off/moving reel method.
3.2 Aerial Installation Pulling Tension Pulling Tension Pulling tension for CommScope cables are shown in this chart. JCAM cables should be pulled by the messenger, where the maximum pulling tension is limited by its minimum breaking strength. Cables are available with a .109 in (3mm) messenger rated at 1800 lbs (818 kgf), .188 in (5 mm) messenger rated at 3900 lbs (1769 kgf) or .250 in (6 mm) messenger rated at 6650 lbs (3022 kgf). Cable Max. Pulling Tension lbs / kgf QR 320 120 (54.
Aerial Installation Bending Radii Bending Radii Cables are often routed around corners during cable placement and pulling tension must be increased to apply adequate force to the cable to bend the cable around the corner. Tension is directly related to the flexibility of cable - and flexibility is QR’s greatest strength. Cable Minimum Bending Radii in/cm QR 320 3 (7.6) QR 540 4 (10.2) QR 540 armored QR 715 QR 715 armored QR 860 6.5 (16.5) 5 (12.7) 7.5 (19.1) 7 (17.8) QR 860 armored 9.5 (24.
3.4 Aerial Installation Espansion Loops Expansion Loops As temperature rises and falls, coaxial cable will expand/contract at almost twice the rate of strand. Expansion loops allow the cable to move to allow for stress caused by thermal changes and strand creep. They are critical to cable life. A typical loop will use no more than an extra 2 - 3 inches (5 - 8 cm) of cable. Loops are formed using mechanical benders or bender boards.
Aerial Installation Forming Expansion Loops Expansion Loops - Forming Two different sizes of expansion loops are currently used. For sizes < 625, use a mechanical bender to form a 12-inch flat bottom loop. This bender produces a minimum 6” (15 cm) deep loop with a 12” (30 cm) flat bottom. 43 in (1.1 m) 11 in (28 cm) radii 6 in (15 cm) 12 in (30 cm) For sizes > 700, use a mechanical bender to form a 15-inch flat bottom loop.
3.6 Aerial Installation Styles of Expansion Loops Expansion Loops - Various Configurations These are several examples of common expansion loop configurations.
Aerial Installation Styles of Expansion Loops Expansion Loops - Various Configurations These are several examples of common expansion loop configurations. Double dead-end Line pole dead-end 3.
3.8 Aerial Installation Back-Pull/Stationary Reel Set-Up Installation - Back-Pull/Stationery Reel Set-Up Set-Up Chute Placement The set-up chute should be positioned on the first pole of the cable route or attached to the strand at the first pole. Placement of the set-up chute should keep the cable from rubbing on the reel or pole. Either a 45° or 90° corner block may be used as a set-up chute.
Aerial Installation Back-Pull/Stationary Reel Block Placement Back-Pull/Stationery Reel - Puller Set-Up and Block Placement Cable Puller Set-Up Place an appropriate cable grip on each cable. Secure the grip to the cable with tape to keep the cable from backing out of the grip should the pulling tension be relaxed. Place a breakaway swivel between the pulling grip and the cable puller. An in-line dynamometer may be placed there instead or along with the breakaway swivel.
3.10 Aerial Installation Back-Pull/Stationary Reel Passing the Pole Back-Pull/Stationery Reel - Passing the Pole and Winching Passing the Cable Puller at Poles Pull the cable puller to the pole and release the tension in the pulling line. Pass the cable across the pole face and the pole/line hardware, and attach the cable puller back to the strand. Place cable blocks on each side of the pole.
Aerial Installation Back-Pull/Stationary Reel Expansion Loops and Lashing Back-Pull/Stationery Reel - Making Expansion Loops and Lashing Make Your Expansion Loop Prior to Lashing If an expansion loop is called for (see Aerial Installation/3.4), attach the mechanical bender to the strand and form the loop per the manufacturer’s directions. Do not remove the bender until at least 50 ft (15 meters) of the cable has been lashed. Attach the Lashing Wire Clamp Place the lasher on the strand.
3.12 Aerial Installation Back-Pull/Stationary Reel Passing the Lasher Back-Pull/Stationery Reel - Passing the Lasher at the Pole Passing the Lasher at the Pole Pull the lasher toward the pole to be passed. Attach a lashing wire clamp to the strand. Remove the lasher from the strand and move it across the pole-face to the strand and cable on the opposite side of the pole. Put the cable into the lasher. Close the gates to prevent the lasher from being pulled backward along the strand.
Aerial Installation Drive-Off/Moving Reel Set-Up Drive-Off/Moving Reel Set-Up and Lashing Trailer Set-Up Pay the cable off the top of the reel rotating toward the rear of the cable trailer. Use minimal reel braking. Attaching the Lasher, Set-Up Chute and Cable Attach a lashing wire clamp to the strand (see Aerial Installation/3.11) far enough from the initial pole to accommodate a required expansion loop or equipment. Place the lasher on the strand and attach the lashing wire to the lashing wire clamp.
3.14 Aerial Installation Drive-Off/Moving Reel Expansion Loops Drive-Off/Moving Reel - Expansion Loops/Passing the Pole Form the Expansion Loops Stop the lasher about 6 feet/1.8 meters from the pole. If an expansion loop is required, attach the mechanical bender to the strand in the appropriate position (see Aerial Installation/3.4). If you are cutting the cable, make sure to leave enough cable tail to accommodate any splicing, equipment or expansion loops.
Aerial Installation Overlashing Installation - Overlashing Existing Cable Overlash Cable Placement Overlashing cables onto existing cable plant is similar to installing cable onto new strand. However, there are some unique aspects: A sag and tension analysis should be performed to see if the new cable load will overwhelm the strand. Use special overlash cable puller blocks and continuously maintain and monitor the pulling line tension.
4.1 Integrated Messenger Installation Overview Integrated Messenger Installation The most cost effective and reliable coaxial installation is possible today by using CommScope’s integrated messenger products. Both our flagship QR® and traditional P3® products are available in integrated messenger designs, built to increase your aerial plant reliability while greatly reducing your installed costs.
Integrated Messenger Installation Down Guys Down Guys All down guys must be placed prior to tensioning the self-supporting cable. Where grounding of down guys is required, it will be necessary to bond the down-guy to the strand. 4.
4.3 Integrated Messenger Installation Hardware and Block Placement Hardware and Block Placement Extension brackets, strand clamps and roller blocks should be in place prior to cable placement for each method described. The C strand suspension clamp (shown at right) is used on jacketed strand. It is a three-bolt clamp with serpentine grooves to prevent slippage of the jacketed strand through the clamp. The suspension clamp must be a type recommended for the size of strand used.
Integrated Messenger Installation Moving Reel Method Moving Reel Method The moving reel method of placing self-supporting cable is used where a cable reel can be moved along side the pole line and there are no obstructions to prevent the cable from being raised into position.
4.5 Integrated Messenger Installation Stationary Reel Method Stationary Reel Method When self-supporting cable will be placed from a stationary reel, all strand hardware, cable blocks, frames, and down-guys must be in place.
Integrated Messenger Installation 4.6 Stationary Reel Method Attach a swivel between the grip and pull line. Pull by the messenger only! Start each pull very slow to remove slack in the pull line and cable. Never start with a sudden jerk, as this will damage the cable at the blocks. While pulling, monitor the cable for binding in the blocks/rollers, and rubbing against the poles. Use cable reel brakes as necessary. During the placing Strand Diameter Weight Max.
4.7 Integrated Messenger Installation Stationary Reel Method Tensioning The length of self-supporting cable that can be tensioned at one time will depend on several factors such as corners, span length, changes in grade, and maximum pulling tension. However, lengths up to 1000 feet can generally be tensioned satisfactorily in straight sections of pole line. Use a chain hoist, strand puller, and sling to remove slack and tension the strand. The strand puller can be used over jacketed steel.
Integrated Messenger Installation Dead Ending Dead Ending Self-supporting cable is dead-ended at the first, last, and corner poles. For stranded steel attach with a Strand-Dead End (Preform), for solid steel messengers use a wire vise. Sufficient cable and strand separation will be required at dead-end poles to allow for splicing if necessary. Note: A corner pole is defined as having an angle of 30° or greater from the pole line.
4.9 Integrated Messenger Installation Cable and Strand Separation Cable and Strand Separation Note: At the time of tensioning the cable and strand must be separated before making permanent attachment. When a Strand Vise or Strand Grip is used on IM at dead-end locations, the cable, and strand must be separated in the web. The web should be slit to a point 6 inches beyond the far end of the vise or strand grip. Note: Do not use a utility knife for slitting the web on IM Cables.
Integrated Messenger Installation Pole Attachment Pole Attachment After the self-supporting cable has been placed and properly tensioned, it must be attached permanently. Any twist (360° rotation) in the IM cable should be removed at this time. The “C” Cable Clamp can be used for attaching the jacketed strand on QR. This is a 3-bolt clamp with serpentine grooves to prevent slippage of the jacketed strand. Install the clamp after the web has been slit. 4.
4.11 Integrated Messenger Installation Splicing Splicing Separating Cable and Strand Measure from the clamp center bolt out 24 inches plus the width of the device plus another 24 inches beyond the device. Mark the cable at these locations for separation. Consult your company methods and procedures for equipment placement prior to installation. Use the appropriate size web slitting tool to separate the steel and cable.
Integrated Messenger Installation Splicing A minimum of 24 inches separation is required at each pole passed. Measure from the clamp center bolt twelve inches from each side. Minimum Separation at Pole Passing Web Removal The web must be removed on QR products leaving a smooth round cable for splicing. Note: Do NOT use a knife. Prior to removing any cable, remove the web. The web on QR can be removed the length of the separation or 2 inches beyond the shrink tube length.
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Underground Installation Pulling Tension Pulling Tension Pulling tension for CommScope cable types are shown in this chart. Cable Max. Pulling Tension lbs / kgf QR 320 120 (54.5) QR 540 220 (100) QR 715 340 (154) QR 860 450 (204) P3 500 300 (136) P3 625 475 (216) P3 750 675 (306) P3 875 875 (397) MO500 270 (123) MO650 360 (164) MO750 500 (227) NEVER EXCEED THE MAXIMUM PULLING TENSION. Excessive forces applied to the cable will cause the cable to permanently elongate.
5.3 Underground Installation Bending Radii Bending Radii Cables are often routed around corners during cable placement and pulling tension must be increased to apply adequate force to the cable to bend the cable around the corner. Tension is directly related to the flexibility of cable - and flexibility is QR’s greatest strength. CommScope’s specified minimum bending radius is the static (unloaded) bending radius of the cable.
Underground Installation Vibratory Plowing Underground Installation - Vibratory Plowing Vibratory plowing offers substantial productivity gains over other direct burial methods. A tractor moves slowly forward as a vibrating blade splits the earth and places the cable at the required depth. Because terrain and soil types vary, contact your plow manufacturer for their equipment recommendation.
5.5 Underground Installation Vibratory Plow Movement Underground Installation - Vibratory Plow Movement Handling obstructions If obstructions (tree roots, large rocks, etc.) are encountered, disengage the transmission, turn the engine off and then disengage the clutch. NEVER BACK THE PLOW WITH CABLE IN THE FEED TUBE. This will damage the cable and pack dirt into the feed tube. Carefully dig a pit behind the blade. Remove the cable, then remove the obstruction.
Underground Installation Trenching Trenching Trenching is accomplished with specialized trenching tractors which cut the trench and remove the soil in a single action. A trench can be used to place multiple cables over long or short distances. Detailed equipment operation and excavation procedures are specified by the construction equipment manufacturer. All bores and crossings should be installed prior to the start of the trenching process. Excavate the trench to the desired depth.
5.7 Underground Installation Boring and Ductwork Boring and Conduit Installations Conventional Bores Mechanical boring machines may be utilized to push a drill stem to make an adequate cable passage. Pneumatically driven pistons may be used as well. Conduit should be placed to support the tunnel wall and allow cable placement. Directional Bores Directional boring is accomplished by using a steerable drill stem. The depth and direction of the boring can be controlled by the equipment operator.
Underground Installation Conduit Installing CommScope Cable into Conduit Cable can be pulled in new or existing conduit. New conduit should be installed in as straight a path as possible - undulations in the conduit system increase pulling tensions due to sidewall pressure. Existing conduit systems generally require some maintenance prior to placing cables into the conduit. Use a rodding machine to remove unwanted debris and water from the conduit.
6.1 Connectorization ACT® - Advanced Coring Technology Coaxial BondingOptimizing Preparation and Connectorization Hardline coaxial cables have been used in the broadband industry for decades. During these years many refinements were made to these cables to produce the optimal cable electrical and mechanical performance. Today, with a better knowledge of processes and recent advancements in material, cables are again being further optimized.
Connectorization ACT® - Advanced Coring Technology Industry Standards To assure a cable’s performance for the user, the industry has adopted standardized test methods and minimum specifications for defining the bond characteristics of coaxial cable. As a starting point, the SCTE in its “Specification for Trunk, Feeder and Distribution Coaxial Cable” [ANSI/SCTE 15 2001] specifies minimum bond strength between the dielectric and the center conductor defined as “Dielectric Shear Adhesion”.
6.3 Connectorization ACT® - Advanced Coring Technology There is an operating range, though, in between these two extremes of performance that facilitates a dielectric bond that will cleanly break away from the center conductor without sacrificing the mechanical aspects of the cable. CommScope has developed, ACT (Advanced Coring Technology), a patent-pending bonding technology that operates in this window between the extremes.
Connectorization ACT® - Advanced Coring Technology Cable Preparation with ACT® P3® with ACTTM and QR® with ACTTM cables were developed to address a question that has been clearly stated and often repeated by the craftsmen, engineers, and technical operations managers of the broadband industry.
6.5 Connectorization ACT® - Advanced Coring Technology What Makes ACT So Different? Typical bond strengths of today’s cables well exceed the minimum requirements, being as much as 100% above that specified by ANSI/SCTE. At the other end of the spectrum are poorly bonded cables that do not meet the specified ANSI/SCTE, EN50117, IEC and Celelec requirements.
Connectorization ACT® - Advanced Coring Technology Getting a Clean Core To take advantage of an ACT cable’s unique clean coring capabilities there are a couple of simple “Best Practice” procedures that the splicer must understand and put into practice.
6.7 Connectorization Overview of P3 Connectorization P3® Connectorization Use the right tools: a P3 coring tool, a P3 jacket stripper, a file, center conductor cleaning tool, wrenches sized for the connectors (adjustable wrenches are fine) and cable cutters. A hi-torque, low-speed drill or a ratchet are optional, but will speed the process. Wearing safety glasses and gloves are recommended. Prepare the cable by using the cable cutters to trim the cable to a smooth, round end.
Connectorization Overview ofo QR Connectorization QR Connectorization ® QR coring/stripping tools are designed for craft-friendliness and speed of operation. All QR connectors and tools are manufactured to meet CommScope specifications, therefore any QR tool can be used to prepare the proper-sized QR cable for any manufacturer’s connector. Use the right tools: a QR coring tool, a file, center conductor cleaning tool, wrenches sized for the connectors (adjustable wrenches are fine) and cable cutters.
6.9 Connectorization Overview of MC2 Connectorization MC2 Connectorization ® Use the right tools: a MC2 jacket stripper, a file, center conductor cleaning tool, wrenches sized for the connectors (adjustable wrenches are fine) and cable cutters. A hi-torque, low-speed drill or a ratchet are optional, but will speed the process. Wearing safety glasses and gloves are recommended. Prepare the cable by using the cable cutters to trim the cable to a smooth, round end.
Plant Maintenance Overview Plant Maintenance CommScope Cable actually requires very little maintenance once installed. However, periodic inspection may reveal small problems that can be corrected before they become large ones. Aerial Trunk and Distribution Cable and Connectors Worn or broken lashing wire can create serious performance problems, such as wind-caused deformation which can impact the characteristic impedance of the cable.
8.1 Appendix Introduction Construction Safety Issues Construction of a broadband cable system requires a substantial amount of manpower, tools and equipment. Underground and aerial construction will expose the manpower, tools and equipment to hazards, dependent on field conditions and circumstances. The Occupational Safety and Health Administration (OSHA) defines a qualified employee as “any worker who by reason of training and experience has demonstrated his ability to safely perform his duties.
Appendix OSHA and NEC Standards Occupational Safety and Health Administration (OSHA) Standards OSHA Standards were established in 1970 to help ensure workplace safety. The Standards are federal regulations that are intended to enable employers and employees to recognize, understand, and control hazards in the workplace. Standards have been established for general industry while some sections of the Standards are dedicated to specific industries such as telecommunications.
8.3 Appendix NEC and Other Ratings NEC Articles 820 NEC article 820 deals with broadband coaxial cable. Traditional coax networks carry a low-voltage radio frequency (RF) signal. The voltage is so low that it is not considered dangerous. NEC article 820 is written with fire safety, not voltage, in mind. Look for the cable rating on the jacket. The cable ratings are: Plenum-rated cables, designed for use in plenums, ducts and air handling spaces, carry the strictest NEC rating.
Appendix NESC Standards and Construction Grades National Electric Safety Code (NESC) Standards and Construction Grades The NESC defines grades of construction on the basis of strength requirements for reasons of safety. Section 24 of the NESC identifies construction grades B (the highest), C, D and N (the lowest). Grade D construction typically applies to broadband coaxial cable and fiber optic cable. Construction grades B or C may be applicable dependent on the situations that exist.
8.5 Appendix Wire Clearance NESC Table 232-1/Vertical Clearance of Wires This chart shows the clearances required for a coaxial cable, isolated communication conductors and cable, messengers and surge-protected wire meeting NESC Rule 230C1, depending on the type of surface it is above. For a complete listing, please contact the NESC at the address on previous page. Surface Minimum Distance feet (meters) Railroad tracks (except electrified railroads using overhead trolley conductors) 23.5 (7.
Appendix Pole Lease Agreements and Other Codes Pole Lease Agreements and Other Codes and Regulations Pole Lease Agreements Cable system operators often enter into contractual agreements with the owners of utility poles. The pole owners are municipalities, telephone companies, and power companies. There are often specific safety practices that are specified in the contract. These safety practices may be more restrictive than other codes and standards.
8.7 Appendix Equipment/Benders Equipment/Benders and Dynamometers Mechanical Bender Uses a mechanical wrenching action to bend expansion loops into QR cable prior to lashing or during splicing. Mechanical benders are preferred to bender boards due to the consistency of their bends. For cables .625 or smaller, expansion loops should be formed with a bender that makes a 12” flat bottom loop that is 6” deep. For cables larger than .
Appendix Equipment/Blocks Equipment/Blocks Multiple Cable Block Used to support multiple cables in independent rollers. Multiple cable blocks make a cable positioner unnecessary when lashing multiple cables. Pole Mount Cable Block Used to install self-support cable and is attached to the pole hardware to support the cable as it is pulled out. Single Roller Block Typically used to support a single cable prior to lashing and may be used when cables are lashed directly to strand or in overlash applications.
8.9 Appendix Equipment/Blocks, Chutes and Brackets Equipment/Blocks, Chutes and Brackets 90° Corner Block Used to route cables through inside or outside corners up to 90°. It minimizes drag on the cable in corners and ensures that the minimum bend radius of the cable is not exceeded. Requires specialized mounting hardware depending on the specific use of the equipment. 45° Corner Block Used to route cables through inside or outside corners up to 45°.
Appendix Equipment/Lashers, Pullers, Positioners and Guides Equipment/Lashers, Pullers, Positioners and Guides Cable Lasher Used to lash cable directly to installed strand or cable bundles. Lashers are somewhat specific to cable and strand size - improper lasher size or adjustment may damage cables. Multiple Cable Puller Allows multiple cables to be pulled into place when lashing cables directly to strand. It’s equipped with a strand brake to prevent sagging of cables as the pulling tension is released.
8.11 Appendix Equipment/Lifting Tools land Brakes Equipment/Lifting Tools and Brakes Lay-up Stick A fiberglass stick used to lift cable blocks and cables into place utilizing appropriate lay-up stick heads. Cable Lifter (or Lay-up Stick Head) Used in conjunction with a lay-up stick to lift cables into place. The lifter ensures that the cables being lifted are not damaged by exceeding minimum bend radii. Cable Block Lifter Used in conjunction with a lay-up stick to place assorted cable blocks mid-span.
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Disclaimer Legal Disclaimer THIS MANUAL IS PROVIDED FOR GUIDANCE PURPOSES ONLY AND SHOULD NOT BE USED OR IN ANY WAY RELIED UPON WITHOUT CONSULTATION WITH AND SUPERVISION OF EXPERIENCED CONSTRUCTION PERSONNEL, ENGINEERS OR NETWORK DESIGN SPECIALISTS. COMMSCOPE MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING ANY REPRESENTATION OR WARRANTY REGARDING THE QUALITY, CONTENT, COMPLETENESS, SUITABILITY, ADEQUACY OR ACCURACY OF THE DATA CONTAINED HEREIN.
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