OPERATION/MAINTENANCE
Configuring an optical power meter using manually set references requires a high level of understanding of fiber
optics and the difference between dBm and dB, and thus should only be performed by advanced fiber technicians
The following steps continue from the “SELECT A TEST METHOD” screen from page 50. This test method requires the user to
manually enter the absolute power level in ‘dBm’ that will determine whether a link will PASS or FAIL.
From the FIBER TYPES screen, press
to scroll through the list of fiber types, then press
to select.
From the Wavelength Reference screen, press
to highlight the wavelength.
Once the power meter and light source have been connected, press
to manually
enter the absolute power reference level.
Power on and connect a light source of the highlighted wavelength to the Fiber OWL 4
using the appropriate reference method setup (i.e. 1-jumper, 2-jumper, or 3-jumper reference
method).
Enter the absolute power reference level as shown at right. Up to 2 decimal places may
be used.
Once the reference level has been entered, press
to continue.
The Wavelength Reference screen will appear, showing the recently entered link budget.
Repeat
through
to set an absolute reference level for a second wavelength, if necessary. Only two wavelengths may be
configured at a time.
Press
to return to the FIBER LINK MENU.
To begin taking readings for this link, press
to return to the MAIN MENU, then press
to TAKE READINGS.
F1
F2
F1
F2
DONE
DONE
MENU
2
DEF
MANUALLY SET AN OPTICAL REFERENCE LEVEL
reference value(dBm):
<---
SHIFT
--->
[-23 07
]
Enter
850nm
_____________________
Enter Manual
Reference
Wavelength
Reference
Screen
980nm
1300nm
_____________________
Wave
LENGTH
WAVE
BUDGET
LINK
R(dBm)
MANUAL
REF
850nm
LB(dB)
+00 00 -00 01
+00 00 -00 01
+00 00 -00 01
Wavelength
Reference
Screen
980nm
1300nm
_____________________
Wave
LENGTH
WAVE
BUDGET
LINK
R(dBm)
MANUAL
REF
850nm
LB(dB)
-23 07 -00 01
+00 00 -00 01
+00 00 -00 01
