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Spectral math magnitude controls
Vertical units can be either linear or log. You can select from the following choices by clicking the Math menu button. Then select
the Spectral Analysis Setup command.
Mag tab
Select the desired scale type, Linear, dB, or dBm:
■
Linear. When the spectrum is linear magnitude the vertical units are the same as the source waveform. Usually this is volts.
However, it may also be watts or amperes.
■
dB. This sets the vertical scale of the magnitude spectrum to dB. Use the Reference Level Offset to set which vertical
position in the magnitude spectrum will be zero dB. The following equation applies:
dB = 20 log (|X| - Ref)
Where X is a complex data point in the spectrum and Ref is the Reference Level Offset value.
■
dBm. This selects dB as described in the above equation, but also sets the Reference Level Offset to a value that is
equivalent to 1 mW of power into 50 ohms. Therefore, if the input units are volts, then the value is set to 223.6 mV. If the
input units are amperes, then the value is set to 40 mA. If the input units are watts, then the value is set to 1 mW.
Reference level
Reference level
This sets the vertical position of the displayed spectrum. Its
value is the magnitude at the top of the display screen. When
this control is adjusted, the spectral waveform along with its
zero reference marker move vertically on the screen as shown.
This control does not change the spectral data.
Oscilloscope reference
722
DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series
Содержание DPO2304SX
Страница 1: ...Tektronix Digital Phosphor Oscilloscopes Printable Help P077006219 077 0062 19...
Страница 2: ......
Страница 3: ...Tektronix Digital Phosphor Oscilloscopes Printable Help www tek com 077 0062 19...
Страница 32: ...Introduction xxviii DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 83: ...About Tektronix oscilloscopes DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series 51...
Страница 89: ...About Tektronix oscilloscopes DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series 57...
Страница 100: ...About Tektronix oscilloscopes 68 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 130: ...Cursor setups 98 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 198: ...MagniVu setup 166 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 212: ...Display setups 180 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 234: ...Horizontal and acquisition setups 202 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 276: ...Mask testing setups 244 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 300: ...Math setups 268 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 408: ...MyScope setups 376 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 510: ...Trigger setups 478 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 548: ...Vertical setups 516 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 558: ...Copying and printing 526 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 605: ...Utilities DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series 573...
Страница 606: ...Utilities 574 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 687: ...Figure A Figure B Oscilloscope reference DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series 655...
Страница 898: ...Oscilloscope reference 866 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...
Страница 920: ...Index 888 DPO70000SX MSO DPO70000DX MSO DPO70000C DPO7000C and MSO DPO5000B Series...