Tektronix OA 5000 ユーザーズマニュアル
OA 5000 Series User Manual
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A Quick Tour
This section provides a brief overview of the OA 5000 Optical Attenuator. The
overview illustrates how easy it is to learn about and use the OA 5000.
overview illustrates how easy it is to learn about and use the OA 5000.
You can read this section or you can choose to investigate the OA 5000 on
your own. If you decide not to read the overview, refer to the User Reference
section to answer any questions you may have. User Reference also de-
scribes details and features not covered in this section.
your own. If you decide not to read the overview, refer to the User Reference
section to answer any questions you may have. User Reference also de-
scribes details and features not covered in this section.
In this section you will set up the OA 5000 and change various settings to
show get a feel for how the OA 5000 works. You will not be using any optical
signals.
show get a feel for how the OA 5000 works. You will not be using any optical
signals.
Figure 1-2, on page 1 --- 4, presents a front panel view of the OA 5000.
If you have not already done so, install the OA 5000 as described on
page 1 --- 1 and turn on the instrument.
page 1 --- 1 and turn on the instrument.
Step 1: Press MODE so that the ATT indicator is lit and -- REF is not lit.
This sets the OA 5000 to display attenuation in absolute units rather than
displaying attenuation relative to a reference value.
displaying attenuation relative to a reference value.
Step 2: Press WAVELENGTH. The word SET will appear in the attenua-
tion display.
Step 3: Using the COARSE and FINE knobs, set the WAVELENGTH to
1300 nm.
The actual attenuation of an optical input signal varies depending on the
wavelength of the signal. To ensure accurate attenuation readings, set
WAVELENGTH to the wavelength of the signal you are attenuating.
wavelength of the signal. To ensure accurate attenuation readings, set
WAVELENGTH to the wavelength of the signal you are attenuating.
Step 4: Press WAVELENGTH again to accept the new wavelength
value.
Step 5: Press DISABLE, so that it is not lit.
If the DISABLE button is lit, the shutter inside the OA 5000 blocks the
signal path, providing
signal path, providing
≥100 dB attenuation for the OA 5002, OA 5012,
and OA 5022, and
≥90 dB attenuation for the OA 5032. When the
DISABLE button is not lit, the shutter is withdrawn from the optical
signal path, enabling you to set the attenuation value from 0 to 60 dB in
0.01 dB increments.
signal path, enabling you to set the attenuation value from 0 to 60 dB in
0.01 dB increments.
Step 6: Press MIN ATT.
This sets the OA 5000 to 0 dB attenuation.
Preset the OA 5000