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Published byElaine Watts Modified over 9 years ago
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Times Microwave Systems LMR ® Wireless Products Seminar
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Agenda Overview of Times Microwave Systems Wireless Markets & Applications Coaxial Cable ‘101’ LMR Cables - Design Features & Benefits Product Range Connectors Cable Assemblies Hardware Accessories CD Web Site
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Military/Commercial Aerospace & Shipboard MIL-C-17 Cables Hermetically sealed airborne EW Assemblies Commercial Avionics Lockheed-Martin Star Supplier Boeing Silver Supplier Northrop-Grumman certified supplier
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Wireless/Commercial LMR Cables –Broadly accepted over last 8 years Range of Products –DB –FR –Ultraflex –LLPL
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Wireless Markets 2-Way SMR, ESMR Wireless Internet Wireless LAN PCS, Cellular, Paging Broadband Wireless Wireless Data Wireless Local Loop Amateur/Ham
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LMR ® Wireless Applications Internal Equipment Wiring Inter/Intra Cabinet Jumpers BTS & Antenna Jumpers Mobile Antennas Tower Feeders In-Building Feeder Runs Rooftops
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Coaxial Cable - Basics Coaxial cable is used to move (transmit RF energy (power) from point “A” to point “B” with maximum efficiency (minimum loss) Minimum loss = maximum power to the antenna for optimum coverage (footprint) Tradeoffs are size, handling and cost versus minimum loss
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Coax Cable Design - Electrical Attenuation (Loss): –Measure of efficiency The larger the cable, the lower the loss The lower the loss, the higher the efficiency –Loss (dB) = 10 x log (Power In/Power Out) 0 dB (no loss) = 100% efficiency 3dB loss = 50% efficiency (P I /P O = 2/1)
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Coax Cable Design - Electrical VSWR (Return Loss): –Voltage Standing Wave Ratio –Measure of electrical uniformity (Z O ) versus frequency –The lower the VSWR, the better 1.10:1 up to 1.30:1 is typical for LMR - 98% to 99.8% efficient –Field measure of system “goodness”
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LMR Cable Design Features Center Conductor: –Solid Copper, Copper Covered Aluminum or Copper Tube Dielectric: – Closed Cell Foam Polyethylene Shielding: –Aluminum Tape Bonded to the Dielectric with Tinned Copper Braid (>90 dB Shielding Effectiveness) Jacket: –UV/Sunlight Resistant Black Polyethylene designed for 20 to 40 year service life
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LMR ® Cable Benefits Flexible Non-kinking No water accumulation (air-dielectric) Easy connector attachment Easy installation Loss comparable to corrugated copper cable and air-dielectric cables
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Added Protection with DB Cable Flooding compound seals braid from water ingress Passes industry standard water blocking tests No problems with connectors DB is standard on LMR-900 thru LMR-1700 10 year warranty
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LMR ® Ultraflex Cables Stranded center conductor for easier bending and flexibility Thermoplastic rubber outer jacket for enhanced flexibility Perfect for applications requiring installation in tight areas –NOTE: Cannot use EZ connectors; not for repeated bending & loss is 15% higher than standard LMR
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LMR ® - FR Cables For installation in vertical building risers, access and service shafts. Flame retardant low-smoke polyolefin jacket Meet NEC Code Requirements (UL/CSA CMR/MPR listed) Uses same connectors as standard LMR cables
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LMR ® LLPL Cables Perfect for In-Building Installations Meet NEC Code Requirements for Plenums and Air Handling Spaces and Air Returns (UL/CSA CMP/MPP listed) Non-Solder EZ Connectors and Solder-On Connectors Available
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LMR-400 (vs 9913 or 3/8” corrugated) Lower loss than 9913 Comparable loss to 3/8” corrugated Foam PE vs airspaced PE dielectric (9913) No water accumulation (9913) No impedance change at bends (9913/3/8” corr) Excellent selection of TMS connector types
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LMR-600 (vs ½” corrugated or ½” superflex) Much lower loss than superflex Comparable loss to ½” corrugated No impedance change at bends Excellent selection of TMS connector types
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Attenuation Comparison LMR-400 9913 3/8” corr 6.0 6.7 5.2 LMR-600 LDF4 superflex 3.9 3.5 5.4 Loss @ 2.0GHz (dB/100ft)
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LMR-900-DB (between ½” and 7/8”corrugated) Loss @ 2.0 GHz: 1/2” corr LMR-900-DB 7/8” corr 3.45 2.63 1.97 Cutoff Frequency: 6.9 GHz No impedance change at bends Excellent selection of TMS connector types
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Attenuation vs. Length @ Frequency Ft50100150200250 GHz LMR-400 2.43.3 6.6 9.913.216.5 5.85.410.816.221.627.1 LMR-600 2.42.14.3 6.5 8.610.8 5.83.67.210.914.518.1 LMR-900-DB 2.41.52.94.45.8 7.3 5.82.44.97.39.712.2
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LMR ® Connectors Interfaces - N, TNC, SMA, BNC Body Attachment - Crimp, Clamp –Crimp - quick install - crimp tool required –Clamp - field install - no special tools Pin Attachment - EZ nonsolder (spring finger) or solder Tools - strip, crimp, wrenches
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Why a connector selection? Conn PinAttach Tools? DOD* Cost EZ-600-NMH EZCrimp Yes 1 2 TC-600-NMHSdrCrimp Yes 2 1 EZ-600-NMCEZClamp No 3 4 TC-600-NMCSdrClamp No 4 3 For high volume:EZ-600-NMH For low volume:EZ-600-NMC (1=best) * Degree of difficulty
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Times Microwave Systems “EZ” Spring Finger Connector
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VSWR vs Frequency
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EZ field Connectorization Requires only a trim tool, crimp tool < 5 minutes to install 2 connectors Time & $$$ savings Reliable connection
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LMR ® EZ Connector Install Tips (LMR-400 & 600) Recommend using EZ Prep/Strip tools Debur the center conductor Make sure connector body is pushed all the way onto the cable – look for braid protruding Crimp directly behind the connector body Don’t double crimp Give it the “Pull test”
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LMR Factory Built Assemblies Fabricated from DB cable Sweep tested for Insertion Loss and VSWR Warranted for 10 Years
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LMR ® System - Installation & Hardware Accessories Wrenches/Strip Tools Ground kits Hanger blocks Hoisting grips Cold shrink Entry panels Snap-in hangers Midspan strip tool
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Times CD Catalogs (LMR, LLPL) Full Length Instructional Videos –EZ Connectors (400 – 1700) –Weatherproofing Kits Loss Calculator & VSWR/Return Loss Converter
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www.timesmicrowave.com
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Times Microwave Systems
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