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TDR 20/20B

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AEA TDR instrument 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 for 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.





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 Formats:


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 for AC operation or battery charging


8.5” x 4.3” x 2.25” (216 x 109 x 57mm)

Velocity of Propagation:

0.20 - 0.99c with Resolution 0.003c


2 lb 1 oz (923grams) with softcase and batteries

Dead Zone:

None on any range


Two with differential readings


99 Screen Plots or 15 Detailed Plots or combinations


Qtr VGA Backlit LCD 279 x 156 pixels


Serial Port 57,600 Baud

Internal Power:

8 AA Alkaline, NiMH or NiCd batteries

External Power:

15VDC @ 450mA


Splash and dust resistant

Drop Resistance:

MilStd 810F Transit Drop, 48 inches (122cm)

TDR 20/20B

attachment Product Data (Eng,)
Tuottaja: Wikinggruppen

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