18
Expert Mode Settings: Setup - Manual (continued)
Real-Time Mode Settings
Note: The Range, Pulse Width, and Averaging Time parameters are user-selectable if the Setup
parameter is set to Manual.
Parameter Description
Range The Range parameter determines the distance range of the full (unzoomed)
trace. It also determines Resolution - the distance between data points in the
trace: the longer the range, the wider the data point spacing. We recommend
selecting the shortest distance range that is longer than the ber under test. For
example, to test a ber that is 1.5 km long (including launch and receive cables),
select the 2 km range. Available Range:
Wavelength (nm) Range Settings
MM 850, MM 1300 250 m to 30 km
SM 1310, SM 1550, 250 m to 240 km
Pulse
Width
The M-series OTDR can operate using different pulse widths. Short pulse widths
provide the shortest event and attenuation dead zones. Long pulse widths
provide the best event detection on long bers.
Averaging
Time
The Time parameter determines the duration of a timed test. Available time
settings: 5 • 10 • 30 • 60 • 90 • 180 sec.
Resolution The Resolution parameter may be set to “Normal” or “High”
“Normal” resolution averages a higher number of acquired trace data samples
than “High” resolution does in a given time frame by using a more coarse data-
spacing, providing increased dynamic range.
“High” resolution has closer data point spacing which may reduce the dynamic
range while improving dead zones.
In addition to Core Settings, the Real Time mode allows you to set the Wavelength, Range, Pulse
Width, and Resolution parameters.
OTDR Test Settings
See section titled “Setup: Full Auto mode
Set tings”.
Use arrows to display the desired value
or option.
Use arrows to select a wavelength.
To Next Page
Loading...
Need help?
General
