AEA Technology 20TDR, Basic Manual

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E20/20 TDR and Avionics TDR Specifications
Characteristic AEA Technology E20/20 TDR and
Avionics TDR Specifications
Distance
Range 0-13,250ft (3,300m) @ VF =.660c
0-20,000ft (5,000m) @ VF =.999c
Resolution: TDR in feet =
ETDR PC Vision in feet =
TDR in meters =
ETDR PC Vision in meters = span/240 or 1/2 in @ 10ft span
span/1920 or 1/16 in @ 10ft span
span/250 or 8mm @ 2m span
Span/2000 or 1mm @ 2m span
Accuracy <0.2% + 1 inch (2.54cm) +
VF uncertainty
Impedance (Z)
Full Range 0 to 1K Ohms
Range Scales 20, 50, 100, 200, 500, and 1KOhms
Resolution 0.1 Ohms
Accuracy <3% of reading
may vary over longer lengths
Velocity Factor (VF)
Range 0.20 - 0.999c
Resolution 0.001c
Dead Zone None - Soft Z readings <2-4 ft (0.6
to1.2 m) cable impedance dependent
Output Impedance
95
Ω
All Connectors
Pulses
Amplitude
750mV +50mV (open circuit)
Width
11.5
µ
sec Nominal
Repetition Rate 23 µ sec Nominal (43KHz)
Pulse Rise Time <1 nsec
Display
Type Qtr VGA LCD, Backlit
Size 287 X 156 pixel, 2.8 X 1.45 inch (67
X 37.5mm)