1-4
IM AQ1200-01EN
Real-time Measurement
In real-time measurement, you can change measurement conditions such as the wavelength, distance
range, and pulse width while waveform changes are being measured in real time.
*
* The measurement conditions that you can change vary depending on the measurement mode. For details
about the measurement conditions, see the explanation of the measurement modes in chapter 3.
Averaged Measurement
When you want to detect reflections, splice loss, and other faint events that are generated from
connections or splice points but are buried in noise, use averaged measurement. The AQ1200 derives
the measured data by averaging the specified number of optical pulse measurements or by averaging
optical pulse measurements over the specified duration. During averaged measurement, you cannot
change the measurement conditions. You can stop the averaged measurement before it completes.
Fiber-in-Use
The AQ1200 uses the same wavelength that is used in real communication to make measurements.
If communication light is present in the optical fiber that you want to measure (the fiber is in use), the
communication will be affected. Take appropriate precautions to avoid communication interference. In
this situation, the AQ1200 will not be able to perform measurements correctly either. Check that there
is no communication light present in the optical fiber before you use the AQ1200. For details on the
fiber-in-use alarm, see section 3.5.
1.2 Optical Pulse Measurement
