OPERATION/MAINTENANCE
Configuring an optical power meter using a manually calculated link budget requires a high level of understanding
of fiber optics, link budget calculation 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 a fixed link budget in ‘dB’.
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 a link budget.
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 link budget as shown at right. Do not use any mathematical operators, and up
to 2 decimal places may be used.
Once the link budget has been entered, press
to continue.
The Wavelength Reference screen will appear, showing the recently entered link budget.
Repeat
through
to set a link budget 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
F3
DONE
DONE
MENU
2
DEF
SET AN OPTICAL REFERENCE USING A MANUALLY ENTERED LINK BUDGET
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)
+00 00 +02 57
+00 00 -00 01
+00 00 -00 01
Enter Link Budget
Budget in dB for all
Link Budget links:
<---
SHIFT
--->
[2 57
]
Enter
850nm Link
_____________________
