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20/20 TDR
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Time Domain Reflectometer _ TDR
20/20 TDR


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.


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:

  • Shorts
  • Opens
  • Wet cable
  • Bridged taps
  • Load coils
  • Split pairs
  • Cable kinks
  • Crushed cable
  • Cable faults
  • Series resistive faults
  • Shunt faults
  • Splitters
  • Poor connections
  • Poor quality cable
  • Lossy cable
  • Other impedance deviations

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.


Ordering Inmation

Model Part Number Options Equipped & Accessories
Rechargeable
Models
6020-R50xx   Adds 8 AA NiMH batteries (installed) & DC Vehicle Charger
20/20N TDR 6020-R5000 Broadcast "N" Type Connector
20/20T TDR 6020-R5012 Telco "RJ45" Type Connector & dual test leads with Telco alligator clips
20/20B TDR 6020-R5020 Broadcast "BNC" Connector, includes: BNC-to-alligator clips test lead
20/20F TDR 6020-R5031 CATV "F" Type Connector, includes: F-to-alligator clips test lead
20/20F Network TDR 6020-R5041 CATV "F" & "RJ45 Connectors, includes: dual test leads with Telco alligator clips & F-to-alligator clips test leads
20/20F Network TDR 6020-R5042 Telco "F" & "RJ45" Connectors, includes: dual test leads with Telco alligator clips & F-to-alligator clips test lead
20/20F Network TDR 6020-R5043 VDV/RF "F" & "RJ45" Connectors, includes: dual test leads with Telco alligator clips & F-to-alligator clips test lead.
20/20B Network TDR 6020-R5053 VDV/RF "BNC" & "RJ45" Connector, includes: dual test leads with Telco clips & BNC-to-alligator clips test lead
Non-rechargeable
Models
6020-50xx   Operates on AC or 8 AA alkalines. Requires external changer NiMH or NiCd.
20/20N TDR 6020-5000 Broadcast “N” Type Connector
20/20T TDR 6020-5012 Telco "RJ45” Type Connector
20/20B TDR 6020-5020 Broadcast “BNC” Connector, includes: BNC-to-Alligator clips test lead
20/20F TDR 6020-5031 CATV "F” Style Connector, includes: F-to-Alligator clips test lead
20/20F Network 6020-5041 CATV “RJ45” and “F” Connectors, includes: RJ45-to-Telco clips and F-to-Alligator clips test leads
  6020-5042 Telco Same as P/N 6020-5041
  6020-5043 VDV/RF Same as P/N 6020-5041
20/20B Network 6020-5053 VDV/RF “RJ45” and “BNC” Connectors, includes: RJ45-to-Telco clips and BNC to Alligator


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.


FEATURES SPECIFICATION
  • 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
Range: 0-6,600ft (2010m) @ VoP =.66c
Display Resolutions: 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
Measurement speed: 1-2 updates/second depending on range
Impedance Range: 1-1K Ohms with Resolution: 0.1 Ohms and Accuracy: <2% @ 40< Z <120
Impedance plotting scales: 0-20, 50, 100, 200, 500 & 1000 Ohms
Impedance mats: Ohms
Output power: 0.4 volts peak-to-peak
Serial interface speeds: 2 lb 1 oz (923grams) with softcase and batteries
Power requirements: 90-240VAC - 50-60Hz AC operation or battery charging
Size: 8.5” x 4.3” x 2.25” (216 x 109 x 57mm)
Velocity of Propagation: 0.20 - 0.99c with Resolution 0.003c
Weight: 2 lb 1 oz (923grams) with softcase and batteries
Dead Zone: None on any range
Cursors: Two with differential readings
Memory: 99 Screen Plots or 15 Detailed Plots or combinations
Display: Qtr VGA Backlit LCD 279 x 156 pixels
Communications: Serial Port 57,600 Baud
Internal Power: 8 AA Alkaline, NiMH or NiCd batteries
External Power: 15VDC @ 450mA
Environmental: Splash and dust resistant
Drop Resistance: MilStd 810F Transit Drop, 48 inches (122cm)
 
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
Application
Cable Impedance Testing
 

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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