3-10
IM AQ1200-01EN
Average Count and Average Duration
You can select the following values.
Duration: 5sec, 10sec, 20sec, 30sec, 1min, 3min, 5min, 10min, 20min, 30min
Sec is seconds, and min is minutes.
Times: 2^10 (1024 times), 2^11 (2048 times), 2^12 (4096 times), 2^13 (8192 times), 2^14 (16384
times), 2^15 (32768 times), 2^16 (65536 times), 2^17 (131072 times), 2^18 (262144
times), 2^19 (524288 times), 2^20 (1048576 times)
2^10 is 2 to the power of 10 (1024 times).
• The maximum average count is 2^20. If you specify a duration to average over that causes this
number of times to be exceeded, the measurement will finish before the duration to average over
elapses.
• Due to the influence of other measurement conditions, a measurement may take less time than the
duration you have specified or it may not complete when the specified duration elapses.
• If you specify a large value for the number of times or the duration, you can perform highly precise
measurements, but the measurement time becomes longer. Keep the Instrument’s dynamic range
and the loss of the optical fiber under measurement in mind when you specify these values.
• The display of the duration or the number of times is determined by the specified average unit.
• If Auto is selected, one of the options above is used.
Event Search
The event search is a feature that automatically searches for losses and reflections in the data that is
acquired during averaged measurements. On the waveform, detected losses or reflections 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.
Auto Save
You can configure the Instrument 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 18.2.
On: Measured data is saved automatically when averaged measurements complete.
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.
• 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 18.2.
3.5 Setting Measurement Conditions
