MTP-200 Series User’s Manual
Shineway Technologies, Inc. - 21 -
5.2.2 Averaging Mode and Realtime Mode
Realtime Mode: OTDR will undertake realtime measurement for the connector of exterior
fiber and refurbish the measure trace. Under realtime mode, unless the user stops
measurement, it will measure all along.
Averaging Mode: Under Averaging mode, OTDR will average the data within the measure
time which is set by user while exceeding the set time; it will stop automatically and display
the result.
Generally, we suggest averaging mode.
5.2.3 In-service Mode and Normal Mode
In-service Mode: Measure live fiber, which use 1625nm to test. This mode doesn’t affect
the normal working wavelength in the fiber under test.
Normal Mode: Use other wavelength except 1625nm (such as 1310nm, 1490nm, 1550nm
and etc.) Make sure there is no laser transmitting in the fiber under test before testing.
When using the In-service mode, the fiber must be connected to the right port of 1625nm. If
it is connected to other port; it may result in imprecise test trace, even permanent damage for
the OTDR.
◆ Only OTDR has 1625nm wavelength, In-service mode is available.
◆ When OTDR is on In-service mode, other wavelength (such as 1310nm,
1490nm,1550nm etc.) is not available.
◆ Above modes can be used with combination, but some mode is not available in
certain conditions.
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