FX80 / FX81 PON Optical Power Meters User Manual
Page
29
of
50
•
REF MEM
function
: the previously saved reference level is set as active.
•
REF OFF
function
: disables previously stored reference level. The measurement is shown
in
dBm
.
•
REF +/
-
function
: adjusts the reference level in small increments. Press the
|Up|
and
|Down|
buttons to change the reference level by 0.01. To set the adjusted level as reference, press
|Shift/Enter|
. To exit without setting, press
|F3|
(EXIT)
.
Broadband measurement taken against a reference level
6.4
Visual Fault Locator (VFL)
The FX80 can be equipped with a Visual Fault Locator (VFL).
To test continuity
:
1. Connect the fiber to the VFL port.
2. Press the
|MODE|
button until get the VFL mode appears (see the Figure below).
