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8 performing automated il/orl/length measurements – EXFO FOT-930 Multifunction Loss Tester User Manual

Page 55

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Multifunction Loss Tester

47

8

Performing Automated

IL/ORL/Length Measurements

(F

AS

T

ES

T)

F

AS

T

ES

T allows you to perform 2- or 3-wavelength bidirectional loss and

ORL tests for singlemode fibers, or 2-wavelength loss tests for multimode
fibers, in 10 seconds (including fiber length measurement).

F

AS

T

ES

T is useful in high-fiber-count installations. Activated at the touch of a

button, F

AS

T

ES

T cuts down on training time and provides error-free results.

To use F

AS

T

ES

T, you need a compatible unit (such as FTB-3930, FOT-930,

FOT-920 or FTB-3920, but not the FOT-910). The unit at the remote end is
only used to establish references. It then waits for commands from the unit
initiating F

AS

T

ES

T (master).

The F

AS

T

ES

T procedure is outlined below:

F

AS

T

ES

T singlemode (SM) and

multimode (MM) ports

Perform

F

AS

T

ES

T

Perform

reference

Save

results

Set ORL zero

(see page 42)

Null offsets

(see page 32)

Set up

F

AS

T

ES

T

Set up thresholds

(see page 26)