20 Acterna OLS-55/-56
4 OPERATION
Wavelength and modulation
Depending on your OLS version up to three wavelengths
can be selected separately or together.
Selecting a wavelength
⇒ Press to skip through available wavelengths:
λ1 -> λ2 -> λ1 + λ2 -> λ1...
(BN 2279/02, 2279/22:
λ1 -> λ2 -> λ3 -> λ1 + λ2 + λ3 -> λ1...)
Modulation
The OLS-55/-56 provides several modes for modulate
the optical signal:
• CW: continuous wave
• 270 Hz modulation
• 1 kHz modulation
• 2 kHz modulation
Changing modulation
✓ Modulation can not be changed manually when
AUTO λ is activated. You first have to disable AUTO λ
(see page 21).
⇒ Press CW/FMOD key to skip through available
modulation modes:
CW -> 270kHz -> 1kHz -> 2kHz -> CW...
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