Agilent Technologies 6002A Betriebsanweisung PDF herunterladen (Seite 236)

D Single-Mode/Multimode Module Performance Tests Test III. Attenuation Deadzone

236 E6000C Mini-OTDR User’s Guide, E0302

♦ Or (Multimode module)

Set the pulsewidth to 10 ns.

ETTINGS]<PULSEWIDTH><10 NS>. Close by OK.

Attenuator settings 8 Set up the attenuator.

–Set

λ to the actual wavelength.

– Set the attenuation to 38 dB (see Note on page 235).

– 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.

P (A/B) until only A is highlighted. Use LEFT/RIGHT

keys

Stop measurement 11 Stop the measurement.

Run/Stop

Set start 12 Set the start position close to the position of marker A

and the measurement span to 2 km.

ETTINGS]<RANGE><RANGE INPUT...>. Use Cursor keys to

specify Start and Span. Confirm with OK.

NOTE The start position should be a little before the front edge

of the reflection. For example, if the reflection is at 2.2

km, use a start position of 2 km.

Restart measurement 13 Start the measurement.

Run/Stop

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Agilent Technologies 6002A Betriebsanweisung Seite 236