Tektronix TDS2024 User Manual

Math FFT
120
TDS1000/2000-Series Digital Oscilloscope User Manual
Selecting an FFT Window
Windows reduce spectral leakage in the FFT spectrum. The FFT
assumes that the YT wave form re peats forever. Wi th an integral
number of cycles (1, 2, 3, ...), the YT waveform starts and ends at the
same amplitude and there are no discontinuities in the signal shape.
A non-integral number of cycles in the YT waveform causes the
signal start and end points to be at different amplitudes. The
transitions between the start and end points cause discontinuities in
the signal that introduce high-freque ncy transients.
Time-domain
(YT) waveform
Without windowing
FFT
Discontinuities
Center 2048
data points

Tektronix TDS2024 Specifications

General

Channels	4
Bandwidth	200 MHz
Sample Rate	2 GS/s
Record Length	2.5k points
Vertical Resolution	8 bits
Vertical Sensitivity	2 mV/div to 5 V/div
Timebase Range	5 ns/div to 50 s/div
Display Resolution	320 x 240 pixels
Math Functions	Add, Subtract, Multiply, Divide, FFT
Input Coupling	AC, DC, GND
Trigger Modes	Auto, Normal, Single
Trigger Types	Edge, Video, Pulse
Connectivity	USB
Input Impedance	1 MΩ
Maximum Input Voltage	300 V
Interface	USB
Power Supply	100 to 240 V
Dimensions	326 mm x 158 mm x 124 mm