Time Domain Reflectometer _ TDR
20/20 TDR
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The 20/20 Step Time Domain Reflectometer (TDR) was designed to provide the clearest picture of coaxial or twisted pair cable lengths and to pin-point cable faults. Step TDR’s, unlike Pulse TDR’s, have no dead-zone on any range and they can provide an impedance (Z) reading the cable, both graphically and digitally.
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Additionally, the 20/20 Step TDR, like the Tektronix® 1502C, can be used on either coax or twisted pair cables and provide a clearer picture of cable faults or events including:
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- Shorts
- Opens
- Wet cable
- Bridged taps
- Load coils
- Split pairs
- Cable kinks
- Crushed cable
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- Cable faults
- Series resistive faults
- Shunt faults
- Splitters
- Poor connections
- Poor quality cable
- Lossy cable
- Other impedance deviations
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Frequency Domain Reflectometers (FDR) test cable at specific frequencies or frequency bands.
Time Domain Reflectometers (TDR) test a cable against the manufacturer’s Characteristic Impedance, which basically tests the cable any and all frequencies.
The 20/20 TDR has 16 different models depending on application.
They are used in broadcast, wireless, cellular, land mobile, telephone, Voice-Data-Video, RF, CATV, aerospace, military, or special applications such as Time-Based TDRs, or Project IceCube at the South Pole.
Any where there is a need to test cable high bandwidth applications our 20/20 TDR’s can accurately locate cable faults, save troubleshooting time, and reduce service call costs.
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Model
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Part Number
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Options
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Equipped & Accessories
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Rechargeable
Models
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6020-R50xx
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Adds 8 AA NiMH batteries (installed) & DC Vehicle Charger
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20/20N TDR
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6020-R5000
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Broadcast
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"N" Type Connector
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20/20T TDR
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6020-R5012
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Telco
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"RJ45" Type Connector & dual test leads with Telco alligator clips
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20/20B TDR
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6020-R5020
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Broadcast
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"BNC" Connector, includes: BNC-to-alligator clips test lead
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20/20F TDR
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6020-R5031
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CATV
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"F" Type Connector, includes: F-to-alligator clips test lead
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20/20F Network TDR
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6020-R5041
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CATV
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"F" & "RJ45 Connectors, includes: dual test leads with Telco alligator clips & F-to-alligator clips test leads
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20/20F Network TDR
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6020-R5042
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Telco
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"F" & "RJ45" Connectors, includes: dual test leads with Telco alligator clips & F-to-alligator clips test lead
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20/20F Network TDR
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6020-R5043
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VDV/RF
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"F" & "RJ45" Connectors, includes: dual test leads with Telco alligator clips & F-to-alligator clips test lead.
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20/20B Network TDR
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6020-R5053
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VDV/RF
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"BNC" & "RJ45" Connector, includes: dual test leads with Telco clips & BNC-to-alligator clips test lead
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Non-rechargeable
Models
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6020-50xx
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Operates on AC or 8 AA alkalines. Requires external changer NiMH or NiCd.
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20/20N TDR
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6020-5000
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Broadcast
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“N” Type Connector
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20/20T TDR
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6020-5012
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Telco
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"RJ45” Type Connector
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20/20B TDR
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6020-5020
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Broadcast
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“BNC” Connector, includes: BNC-to-Alligator clips test lead
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20/20F TDR
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6020-5031
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CATV
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"F” Style Connector, includes: F-to-Alligator clips test lead
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20/20F Network
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6020-5041
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CATV
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“RJ45” and “F” Connectors, includes: RJ45-to-Telco clips and F-to-Alligator clips test leads
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6020-5042
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Telco
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Same as P/N 6020-5041
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6020-5043
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VDV/RF
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Same as P/N 6020-5041
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20/20B Network
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6020-5053
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VDV/RF
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“RJ45” and “BNC” Connectors, includes: RJ45-to-Telco clips and BNC to Alligator
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All 20/20 TDR models include: AC-DC Wall power adapter, Padded Belt Case with strand hook and shoulder strap, PC serial cable, Operator Manual, Quick Start Guide, CD with TDR PC Vision Software and copies of documentation.
Optional Accessories include: Kit Soft Carrying Case, Hard Carrying Case.
Click on “ACCESSORIES” at the bottom of the page detailed description and part numbers.
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FEATURES
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SPECIFICATION
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- SWR & Return Amplitude - Selected Models
- Rechargeable models have AC wall and DC vehicle adapters
- Range from 0 to 10,000ft (3,300m) No Dead Zone- Any Range
- Operates on AC, NiMH or Alkaline AA cells
- Impedance (Z) - all models
- Graphical Plots
- Clear indications of opens, shorts, water, bridge taps, etc.
- Auto Fault Finder & Intermittent Locator functions
- Accuracy < 0.1% † 1 inch(2cm) and < 2% impedance
- Series resistive faults
- Shunt faults
- Splitters
- Poor connections
- Poor quality cable
- Lossy cable
- Other impedance deviations
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Range:
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0-6,600ft (2010m) @ VoP =.66c
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Display Resolutions:
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1 in (2.54cm) 0-5000 ft 5`4 inch (1.63m)5000-10000ft or 0.1% of span distance with Accuracy:<0.2% + 1 inch (2.54cm) + VoP uncertainty
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Measurement speed:
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1-2 updates/second depending on range
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Impedance Range:
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1-1K Ohms with Resolution: 0.1 Ohms and Accuracy: <2% @ 40< Z <120
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Impedance plotting scales:
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0-20, 50, 100, 200, 500 & 1000 Ohms
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Impedance mats:
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Ohms
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Output power:
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0.4 volts peak-to-peak
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Serial interface speeds:
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2 lb 1 oz (923grams) with softcase and batteries
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Power requirements:
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90-240VAC - 50-60Hz AC operation or battery charging
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Size:
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8.5” x 4.3” x 2.25” (216 x 109 x 57mm)
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Velocity of Propagation:
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0.20 - 0.99c with Resolution 0.003c
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Weight:
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2 lb 1 oz (923grams) with softcase and batteries
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Dead Zone:
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None on any range
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Cursors:
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Two with differential readings
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Memory:
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99 Screen Plots or 15 Detailed Plots or combinations
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Display:
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Qtr VGA Backlit LCD 279 x 156 pixels
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Communications:
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Serial Port 57,600 Baud
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Internal Power:
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8 AA Alkaline, NiMH or NiCd batteries
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External Power:
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15VDC @ 450mA
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Environmental:
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Splash and dust resistant
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Drop Resistance:
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MilStd 810F Transit Drop, 48 inches (122cm)
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INCLUDES
- Test Lead, F-to-alligator clips: 0070-1220
- Test Lead, BNC-to-alligator clips: 0070-1221
- TDR Quick Start Guide: 6020-301x
- TDR PC Vision software: 6020-1220
- TDR Operator Manual: 6020-3000
- Soft Belt Case: 5001-1002
- Serial Cable, DB9-to-audio jack, 25ft (7.6m) : 0070-1215
- DC Vehicle Adapter: 6025-0250
- AC adaptor, 90-240 VAC, 50-60Hz : 5001-0202
- Test Lead, Telco, RJ45-to-Telco alligator clips: 6020-0250
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Application
Cable Impedance Testing
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PRODUCT OPTIONS
- Test Lead, Coax 3.5GHz, 6 ft (2m) F conn: 0070-1230
- Soft Carrying Case: 6015-1002
- NiMH Batteries (8 AA) & Charger Kit: 0010-0020
- Hard Carrying Case: 6015-1003
- DC Extender Cable, 20 ft (6m): 0070-1200
- Certificate of Calibration: 6000-0402
- Adapters, N-to-SMA & Calibration Kit: 6025-0260
- Adapter, N-to-TNC: 0070-1134
- Adapter, N-to-SO-239: 0070-1195
- Adapter, N-to-BNC: 0070-1190
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