Omega HOS-MS420 User Manual page 68

20mhz oscilloscope
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One of the following two prompts will display at the bottom-left of the screen
when the Format is set to Vrms.
— CH1 voltage level
— FFT vertical position
Press the blue button VOLTS POSITION; the following will appear:
— CH2 OFF
9.
If the FFT source is CH2, press the blue button VOLTS POSITION ,
One of the following three prompts will display at the bottom-left of the screen
when the Format is set to dB.
— FFT dB level
— CH2 voltage level
— FFT vertical position
One of the following two prompts will display at the bottom-left of the
screen when the Format is set to Vrms.
Press the red button VOLTS POSITION; the following screen will appear:
—CH1 OFF
10. When the FFT source is CH1:
If the display at the bottom left side of the screen is "
the red buttons VOLTS POSITION▲ and ▼ to adjust the dB value
(the DIV selections include 1dB 2dB 5dB 10dB and 20dB).
If the display at the bottom left side of the screen is "
level", use the red buttons VOLTS POSITION▲ and ▼ to adjust the voltage
 
67 
-FFT dB level ", use
-CH1 voltage
V5.1 ‐ March 2010 

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