Amprobe TDR-400 Manual - Halaman 2
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Halaman Cetak
The TDR-400 is a handy, light impulse reflectometer, processor controlled, with LCD display
for check and locate faults in telecommunication and power cables.
Technical data
Display:
LCD display, 120 x 32 pixel, illuminated
Power supply:
NiMH accumulator 6 V/ 700 mAh (5 x R3),
Power consumption 80 mA
Dimensions:
157 x 84 x 30 mm
Operating:
with 3 keys
Weight:
300 g
Measuring ranges
Measuring range
Resolution
Accuracy
Propagation factor
Storage places
Dynamics
Impedance
Output
Output pulse
Operating
− Switch on:
push key 1, after that push key 3. (accumulator full app. 7 V, empty app. 5.5V)
− Switch off: push simultaneously key 2 and 3, after 4 min. inactivity automatically.
If the accumulator voltage drops to 5.9 V, a fade-in happens on the display.
At 5.5 V the IRM switches off itself.
- Change between length measurement and length range: push shortly key 3
- Cursor move or range change: with key 1 or 2
- Fast cursor moving: keep key 1 or 2 pushed
- Selection of resolution, output pulse width, storage place or propagation factor:
push long key 3 until the desired symbol appears inversely.
change of the selected value with the keys 1 and 2.
Permanent storage: push keys 1 and 3 simultaneously.
back: push short key 3 .
- moving of the zero line:
Impulse Reflectometer TDR-400
0 – 2000 m
0.25m, 0.5m, 1m, 4m
0.2 % of the measuring range
0.25 to 0.999
10 for propagation factor
44 dB
75 Ohm
F-socket
4 V / 5 ns or 100 ns
2