Tektronix OA 5000 Series, User Manual

Page: 34 / 136

OA 5000 Series User Manual
2 ---5
Setting Attenuation Levels
Because the OA 5000 automatically adjusts the attenuator to correct for
different wavelengths, it is important, for attenuator accuracy, to correctly
match the displayed wavelength with the wavelength of the signal going into
the unit.
Setting attenuation levels on the OA 5000 requires you to perform two
procedures in the following order:
1. Specify the wavelength of the signal to be attenuated.
2. Set the level of attenuation.
Refer to Figure 2-3.
DISABLE
MIN ATT
STORE 1 RECALL 1
STORE 2 RECALL 2
REMOTE MODE
SET REF
COARSE
FINE
WAVE-
LENGTH
ADDR
(SET)
This button sets
attenuation to the
minimum
value.
These knobs set the
attenuation level,
reference level,
wavelength and GPIB
address.
This button assigns the
ATTENUATION display to
either absolute units or
units relative to the
reference level.
Use this button to assign the
knobs to adjust the
wavelength.
Figure 2-3: Setting Attenuation Levels
To specify the wavelength to be attenuated:
Step 1: Press the WAVELENGTH button.
The word SEt will appear in the attenuation display and the WAVE-
LENGTH button will illuminate.
Specifying the
Wavelength
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