Exfo FTB-3930 MultiTest Uživatelský manuál stáhnout pdf (Strana 85)

Troubleshooting

Multifunction Loss Tester 79

Solving Common Problems

Unable to send a text

message.

 Selected port differs

from actual port to

which fiber is

connected.

 Receiving unit’s port is

in use.

 Remote unit is not

compatible.

 On the sending unit, set

the correct port (SM or

MM) in Setup (F

ASTEST

tab).

 Wait until FASTEST

completes, turn source

and ORL meter off or exit

Probe mode (FOT-930).

 Make sure remote unit is

an FOT-930, FTB-3930,

FOT-920 or FTB-3920.

On Results tab, a box

indicates “Invld” instead of

a numerical value.

The application is unable to

calculate the F

ASTEST ORL

value (e.g., at 1310 nm for

short fibers).

Perform the measurements

again.

On Results tab, a box

indicates “- - - -” instead of

a numerical value.

The calculated value makes

no sense (e.g., negative

ORL value).

Perform the measurements

again. Note that the

calculated value is usually

shown on the printed report.

When printing a report,

rightmost columns are not

printed.

The Fiber ID column is too

wide. The width of this

column is determined with

the widest name.

Rename fiber IDs that have a

long name.

When saving data in text

formats, some ORL values

are higher than the

indicated sensitivity.

Saved text files containing

symbols such as “>” may

not open properly in some

applications.

The actual measured value is

used instead, even if it is not

accurate.

Problem Possible Cause Solution

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