distance to faults cable propagation velocity loss and load mismatch quantification of damage from opens, shorts, frays, crimps and water faulty taps and unterminated lines in lan and catvenvironments stripline and cable impedance characterizing lan installations options: 03-internal battery 04-yt-1 chart recorder 05-metric version 06-ethernet testing (1503 only) 08-token ring adapter09-usoc adapter (1503 only) 10-token ring interface
tdr characteristics
1502c 1503c
test signal step rise 1/2 sine
amplitude 300 mv nominal into 50 w load 2.5 v terminated5.0 v unterminated
system risetime 10%-90% 200 ps (1.15 in./2.92 cm)
pulsewidths 2 nsec, 10 nsec, 100 nsec, 1000 nsec
output impedance 50ω 50ω, 75ω, 93ω, 125ω
electrostatic discharge protection 1 kv/500 pf capacitor/1 k resistor
input protection ± 1 amp (dc) ± 400 v (dc + peak ac) to a maximum of 440 hz
maximum range 2,000 ft/625 meters 50,000 feet/15,000 meters
distance readout resolution 0.05 inch/0.12 cm 0.04 ft/0.01 m
noise filtering 1 to 128 averages 1 to 128 averages
vertical scale 0.5 mr/div to 500 mr/div 0 db to 63.75 db gain
vertical accuracy ± 3% of full scale ± 3% of full scale
dist/div 0.1 to 200 ft/div; 0.025 to 50 m/div 1 to 5000 ft/div; .25 to 1000 m/div
horizontal accuracy 1.6 inches (.041 m) or ± 1% of measured distance, whichever is greater at vp = 0.66 2% ± 0.02 feet of measured distance plus uncertainty in vp
common characteristics: 1502c and 1503c
environmental characteristics meets capabilities of a type iii, class 3, style c instrument (except emi where it meets fcc: part 15, 3, a, and vde: 0871, class b) as prescribed by mil-t-28800c
power requirements
ac power line voltage: 115 v ac (90 to 132 v ac) and 230 v ac (180 to 250 v ac)line frequency: 45 to 440 hz
dc power battery operation (option 03): at least 8 hours (15 to 25c charge and discharge temperature), including 30 chart recordings
full charge time 20 hours maximum
physical characteristics
width 315 mm (12.4 in)
height 127 mm (5.0 in)
depth 475 mm (18.7 in)
net weight, without front cover or accessories 7.3 kg (15 lb)

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薛忠泽
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