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Setting Attenuation Levels
User Reference
2 ---6
Step 2:
Use the two knobs to adjust the displayed wavelength value.
The
COARSE
knob changes the displayed value by 10 nm per click and
the
FINE
knob changes the displayed value by 1 nm per click. The
wavelength can be adjusted from 600 to 1700 nm.
Step 3:
When the desired wavelength is displayed, press
WAVE-
LENGTH
again to accept the new displayed value. The OA 5000 will
return to the previous attenuation display mode.
To set the attenuation level once you have set the wavelength:
Step 1:
Set the attenuation display mode by pressing the
MODE
but-
ton.
The attenuation display shows the current attenuation value in one of two
modes, absolute or relative to a reference value. Pressing the
MODE
button,
while it is illuminated, toggles between these modes.
When the
ATT
light is on and the
-- REF
light is off, the displayed attenuation
is in absolute mode. In this mode, the displayed attenuation is the value
relative to its absolute minimum setting. The minimum value in this mode is
always 0 dB.
When both the
ATT
and
-- REF
lights are on, the displayed attenuation value
is the absolute attenuation value minus the value of the reference (refer to
the section
Setting the Reference Value
to set the reference). The
COARSE
and
FINE
knobs still adjust the attenuation value as with absolute mode.
The only difference is the value displayed in the attenuation display.
Step 2:
Set the desired attenuation value by adjusting the
COARSE
and
FINE
knobs. The
COARSE
knob changes the attenuation by 1 dB
per click and the
FINE
knob changes the attenuation by 0.01 dB per
click.
NOTE
Switching between the absolute and relative display modes does
not change the actual attenuation value but only the value dis-
played.
Setting the
Attenuation Level
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Содержание OA 5000 Series
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Страница 92: ...Appendices Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
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