Agilent-technologies 83438A Manual do Utilizador Página 29

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2-9
Making Measurements
Ambient Light Suppression
5
Press
REF LEVEL
, and set the reference level to 10 dBm.
6
Press
Amptd
,
LOG dB/DIV
, and enter 5 dB.
7
Press
MORE
,
CHOP On Off
so that Off is underlined.
8
Press
BW,Swp
,
SWPTIME AutoMan
, and set the sweep time to 10 seconds.
9
Press
MORE
,
MORE
,
adc trigger
, and then
ADCTRIG AC
.
10
Press
ADCTRIG DELAY
, and enter a value of 1 ms.
11
The display should now show the proper amplitude values with the effect of the
ambient light subtracted out.
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