Agilent Technologies 6002A Guia do Utilizador Página 232

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D Single-Mode/Multimode Module Performance Tests Te s t I I. E v e nt De a d z o ne
232 E6000C Mini-OTDR Users Guide, E0302
Or (Multimode module)
Set the pulsewidth to 5 ns.
[Settings]<PulseWidth><5 ns>
Attenuator settings 8 Set up the attenuator.
–Set
λ to the actual wavelength.
Set the attenuation to 38 dB (see Note on page 230).
Enable the attenuator output.
Start measurement 9 On the OTDR start the measurement.
Run/Stop
Position marker A 10 Wait until the backscatter noise is reduced (about 10 s),
then position marker A close to the beginning of the
first reflection after the front reflection. See Figure 79.
U
P (A/B) until only A is highlighted. Use LEFT/RIGHT
keys.
Figure 79 Event Deadzone Test: Position Marker A
Set start 11 Set the start position close to the position of marker A.
The start position should be just before the front edge
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