Omega HOS-MS420, User Manual, Page: 68 / 110

67
V5.1 ‐ March 2010
z 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 ,
z 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
z 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:
z
If the display at the bottom left side of the screen is " -FFT dB level ", use
the red buttons VOLTS POSITION ▲ and ▼ to adjust the dB value
(the DIV selections include 1dB 2dB 5dB 10dB and 20dB).
z If the display at the bottom left side of the screen is " -CH1 voltage
level", use the red buttons VOLTS POSITION ▲ and ▼ to adjust the voltage