Noyes OFL 100 Mini-OTDR, Руководство по эксплуатации

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FIB[ ] BATT [ ]
SETUP #[
XX] LOCATE
FIB[<50m] BATT [ ]
SETUP #[ XX] LOCATE
3.3.2 DM and DS Models
The number of blocks displayed in the main menu, as shown
below, indicates the quality of the launch condition, or
connection to the system. For the greatest range, the display
bar graph should show four blocks next to FIB. Each block
represents approximately 2 dB of operating range.
Should the display show less than 2 blocks, then the front panel
connection may be contaminated and should be checked. If
after cleaning, there are still less than 2 blocks showing, an
event of excessive loss may be near the launch such as break
in the fiber or a poor splice.
The OFL 100 will still measure fiber when there are fewer blocks,
but its range will be significantly shortened.
If the display indicates <50 m, the unit is not seeing any fiber
beyond 50 meters. This could indicate a poor launch condition
or fiber break within 50 meters of the unit.
The unit will still measure the fiber end on lengths less than 50
meters, but will not give an indication of front end connection
quality.
The OFL 100DM models will measure distances as short as
10 meters (reflective). The OFL 100DS models will measure
distances as short as 25 meters (reflective).