3-9
IM AQ1200-01EN
Optical Pulse Measurement and
Analysis Conditions
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Index
App
Event Search
The event search is a feature that automatically searches for events in the data that is acquired after
averaged measurements complete.
On the waveform, detected points where loss or reflection occurs are known as events. For details on
analyzing detected events, see chapter 7.
Automatic: After averaged measurements complete, events are automatically searched for and
listed, and the event analysis menu is displayed.
Manual: After averaged measurements complete, the waveform is displayed, but events are
not searched for.
Note
If auto save is turned on, measured data is automatically saved after averaged measurements complete, so
be sure to specify the folder where measured data will be saved to before you start measuring.
Auto Save
You can configure the AQ1200 to automatically save the measured data that it has acquired to the
specified folder after averaged measurements complete.
Off: Measured data is not saved when averaged measurements complete. For details on saving
data manually, see section 16.2.
On: Measured data is saved automatically when averaged measurements complete.
Note
• If you want to change the selected drive, first set Auto Save to On.
You cannot change the selected drive while Auto Save is set to Off.
• For the file name format settings, see section 16.4.
Fiber-in-Use Alarm
The optical pulse wavelength that the AQ1200 uses is the same as that used for optical
communication. If communication light is present in the optical fiber, the communication itself will be
affected. When this communication light is present, we say that the fiber is in use. The fiber-in-use
alarm is a feature that checks if communication light is being transmitted along the optical fiber that you
are trying to measure. If the fiber is in use, an alert message is displayed that suggests you stop the
measurement. If the input level of the communication light is –20 dBm to 0 dBm, to prevent damage to
the AQ1200, the alert message is displayed repeatedly. If this occurs, stop measuring. For details on
starting and stopping measurements, see chapter 4. For details about the message, see section 18.2.
On the AQ1200B and AQ1200C, because the light received at the wavelength for optical
communication is blocked (not detected), fiber-in-use alarms do not occur.
Plug Check
The plug check is a feature that checks the state of the connection between the AQ1200 and an
optical fiber. When you turn this feature on, you can prevent light from being transmitted from the
AQ1200 optical pulse output port if an optical fiber is not connected to the AQ1200 or if the fiber is not
connected correctly.
Off: Plugs are not checked.
On: Plugs are checked.
PON (Passive optical network)
If the optical fiber that you are trying to measure is connected to a PON system, because an
optical splitter for splitting the optical fiber is installed in the system, you will not be able to measure
optical pulses that are reflected from a position further away than the optical splitter using normal
measurement. This feature enables you to correctly measure optical pulses that are reflected from
positions such as this.
This feature is available on AQ1200A models with the /PN option.
Off: Optical pulses excluding those from PON systems can be measured.
On: PON system optical pulses can be measured.
3.5 Setting Measurement Conditions
