4-1
IM AQ1200-01EN
Measuring Optical Pulses
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Index
App
4.1 Performing Real-time Measurement
In real-time measurement, you can view waveform changes in real time. You can change the
conditions while measurement is being performed.
WARNING
During measurement, the AQ1200 optical pulse output port transmits light, so do not remove
the optical fiber that is connected to this port. Visual impairment may occur if the light enters
the eye.
Procedure
Starting and Stopping Measurements
1.
Using the
rotary knob
and
ENTER
, select
OTDR
.
2.
Press
REAL TIME
to start the measurement and display the measured waveform on the
screen. The soft key menu switches to the real-time menu.
A mark appears on the display to indicate that the laser light is on.
3.
During real-time measurement, press
REAL TIME
to stop the measurement. The soft key menu
switches to the OTDR menu.
The mark that indicates that the laser light is on disappears from the display.
Set the wavelength (1310nm, 1550nm).
You cannot set the wavelength on the
AQ1200B and AQ1200C.
Set the distance range (Auto, 500m,
1km, 2km, 5km, 10km, 20km, 50km,
100km, 200km).
Set the pulse width (Auto, 3ns, 10ns,
20ns, 50ns, 100ns, 200ns, 500ns, 1µs,
2µs, 5µs, 10µs).
Press to configure marker settings.
(See section 6.1.)
Waveform display screen
(See section 5.1.)
Set the attenuation (Auto, 0.00dB,
2.50dB, 5.00dB, 7.50dB, 10.00dB,
12.50dB, 15.00dB, 17.50dB, 20.00dB,
22.50dB, 25.00dB, 27.50dB, 30.00dB).
Setting the Work Completion Point
3.
Move the cursor to a position that is a little after the installation point.
4.
Press the
Completion Check
soft key. A message confirming whether you have moved the
cursor to the work completion point is displayed. (The message is displayed when Confirmation
is set to “Check only once” or “Check everytime.”)
5.
Press the
OK
soft key to start real-time measurement. If the fiber end moves the distance
indicated by the cursor position, the AQ1200 displays a message or sounds an alarm. Press
REAL TIME to clear the message or turn off the alarm.
Note
The Completion Check soft key is only displayed when work completion notification is turned on.
For the setup procedure, see section 3.8. Work completion confirmation is turned off automatically when
measurement is stopped.
Set the work completion confirmation (ON, OFF).
Chapter 4
Measuring Optical Pulses