Viavi T-BERD MTS-580 Parts list manual

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T-BERD®/MTS-5800 Modular Test Set
Measuring Optical Power Levels with a 4100-series OTDR Module
This procedure describes how to use an E4100-series OTDR module as an Optical Power Meter (OPM).
If optioned, the OTDR module can operate as an OPM or Optical Light Source, but not at the same
time. Light Source is a standard feature on most new OTDR modules, while Power Meter is an option.
Equipment Requirements:
•T-BERD/MTS-5800 equipped with the
following:
oFiber Optics Software Release V21.0
or greater
oE4100 Series OTDR Module
oE41OTDRPM Power Meter option
•Fiber optic cleaning and inspection tools
•Reference Cable (patch cord) with
connectors matching the OTDR port and
Fiber Under Test
•Optical Coupler to connect Reference
Cable to Fiber Under Test
Figure 1: Equipment Requirements
The following information is required to complete the test:
•Type of Fiber (Multimode or Single Mode)
•Type of Connectors (SC UPC, SC APC, LC UPC, etc.)
•Wavelength(s) to be tested (850nm, 1300nm, 1310nm, 1550nm, etc.)
Fiber Inspection Guidelines:
•Use the VIAVI P5000i or FiberChek Probe
microscope to inspect both sides of
every connection being used (OTDR Port,
Reference Cable, bulkhead connectors,
patch cords, etc.)
•Focus the fiber on the screen. If dirty,
clean the end-face.
•If it appears clean, run inspection test.
•If it fails, clean the fiber and re-run
inspection test. Repeat until it passes.
Figure 2: Inspect Before You Connect (IBYC)

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Connect Reference Cable to OTDR port:
1. Inspect the OTDR port on top of the test
set.
2. Inspect the fiber end face of Reference
Cable.
3. Connect Reference Cable to the OTDR
port.
Figure 3: OTDR Port Inspection
Connect to Fiber Under Test (FUT):
The Reference Cable may be connected to the
FUT via an optical patch panel (OPP) or an
optical coupler:
1. If the interface to the FUT is a patch
cord, connect the patch cord to an
optical coupler with the same connector
type.
2. Inspect the FUT connected to the
coupler or OPP.
3. Inspect the other fiber end face of the
Reference Cable.
4. Connect the Reference Cable to the
coupler or OPP.
Figure 4: Connecting Reference Cable to OPP
Figure 5: Connecting Reference Cable to FUT with a
coupler
Launch the Power Meter:
1. Press the Power button to turn on
the T-BERD/MTS-5800.
2. Tap the Fiber Optics icon
in the Status Bar at the
top of the T-BERD/MTS-5800.
3. Tap the purple >on the left screen side
to display the Fiber Optics Home
screen.
4. Tap the POWERMETER icon until it is
yellow and highlighted:
•for Single Mode fiber
•for Multimode fiber
Figure 6: Fiber Optics Screen
Figure 7: Fiber Optics Home screen

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Product specifications and descriptions in this
document are subject to change without notice.
Measure Optical Power:
Note: The same user interface is used to
operate the OTDR module as an Optical
Light Source or a Power Meter. The top
part of the display is used to control the
light source, while the bottom portion is
for the Power Meter option.
1. Tap the Wavelength drop down in the
Powermeter on Module section and
select the wavelength you wish to
measure.
2. Tap the Unit drop down and select
dBm.
3. View the power level in the
Powermeter on Module section.
Figure 8: Source and Powermeter Screen