Fluke DTX-1800, Technical Reference Handbook

Page: 235 / 398

Certifying Fiber Optic Cabling
Autotest in Smart Remote Mode
8-27
8
Note
The results described here are for an unsaved test.
Unsaved tests for Smart Remote mode show results
for both fibers. Saved tests are saved in two records.
Each saved record shows results for one fiber.
A
The overall result for the test.
B
Overall results for the two fibers (
E
is PASS,
F
is FAIL):
•
Input Fiber/Output Fiber: The fiber connected to the
tester’s input and output ports, respectively.
•
Loss (Remote -> Main) : Loss on the fiber connected
between the remote’s output and the main tester’s
input.
•
Loss (Main -> Remote): Loss on the fiber connected
between the main tester’s output and the remote’s
input.
•
Length: Half of the length from the main tester to the
remote and back again. This equals the length of one
fiber if the two fibers are equal length.
To see the propagation delay, select the length result.
Propagation delay is half the time taken for a signal to
travel from the main tester to the remote and back again.
Propagation delay is measured in nanoseconds (ns).
C
The overall result for the loss measurement.
D
The measured loss for the fiber.
Note
If loss is negative, set the reference again and retest
the cabling. See page 10-3 for more information on
negative loss.
E
The maximum loss allowed by the selected test limit.
F
The difference between the limit and the measured loss.
Margin is negative if the loss exceeded the limit.
G
Loss meters for the two wavelengths. Values in the red
zone exceed the selected test limit.
H
Press
L
View Ref. to view the reference information.