4-1
IM AQ1200-01EN
Measuring Optical Pulses
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App
Index
20
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, do not remove the optical fiber cable, because light is emitted from
the light source port. Visual impairment may occur if the light enters the eye.
• Close the covers of any light source ports that do not have optical fiber cables connected
to them. On models with two or more light source ports, visual impairment may occur if light
that is mistakenly emitted from the wrong port enters the eye.
French
AVERTISSEMENT
• Lorsque l’AQ1200x/AQ1205x génère de la lumière, la lumière est émise à travers les
ports de source lumineuse. Ne pas débrancher les câbles de fibre optique connectés. Des
lésions oculaires peuvent être causées si le faisceau lumineux pénètre l’œil.
• Masquer les orifices de source lumineuse sur lesquels aucun câble à fibres optiques n'est
branché. Sur les modèles d'au moins deux orifices de source lumineuse, une déficience
visuelle peut se produire si la lumière
émise par erreur du mauvais orifice pénètre dans l'œil.
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, 300km, 400km, 512km).
Set the pulse width (Auto, 3ns, 10ns,
20ns, 50ns, 100ns, 200ns, 500ns, 1µs,
2µs, 5µs, 10µs, 20µs).
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).
Laser on indication
Switches to the menu that is used to
operate markers and scale.
See section 5.2 or 6.1 in the user’s manual.
Chapter 4
Measuring Optical Pulses