2-9
Making Measurements
Ambient Light Suppression
5Press REF LEVEL, and set the reference level to –10 dBm.
6Press Amptd, LOG dB/DIV, and enter 5 dB.
7Press MORE, CHOP On Off so that Off is underlined.
8Press BW,Swp, SWPTIME AutoMan, and set the sweep time to 10 seconds.
9Press 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.