Check the listing for details. ISDS205B Oscilloscope / Spectrum Analyzer / DDS / Sweep / Data Recorder. Condition: New. Listed at 65.79 USD. Features: ISDS205B dual-channel digital oscilloscope, with "low-cost, high-performance" as the design goals. well-designed bandwidth of 16M, 48M sampling rate, 2 channels, alternating support X, Y and XY alternating pattern of two-channel virtual oscilloscope, spectrum analyzer, data recorder. Meanwhile, it support DDS and Sweep function. DDS support 5 kinds of waveform output, Sine wave can output up to 20M. The device communicate with the PC via high speed USB2.0. Support Win XP,Win7(32)、Win7(64)、Win8(32)、Win8(64)、Win10(32)、Win10(64) and above. Digital oscilloscope Spectrum analyzers Data recorder DDS Sweep ISDS205B √ √ √ √ √ Digital oscilloscope Channels 2 Impedance 1MΩ 25pF Coupling AC/DC Vertical resolution 8Bit Gain range -6V ~ 6V（probe X1） -60V ~ 60V（probe X10） Vertical accuracy ±3% Timebase range 1ns-20s Input Protection Diode，50Vpk Autoset Yes(10Hz to 16MHz) Trigger Mode Auto、Normal and Signal Trigger Type No、Rising edge、Falling edge、 Rising edge or Falling edge Trigger level Yes Trigger Source CH1, CH2 Buffer Size 1MB/CH Bandwidth 16MHz Max sample 48MS/s Vertical mode CH1, CH2, ADD, SUB, MUL Display Mode X、Y-T和X-Y measurements Yes Wave save Osc(Private)、Excel and Bmp Spectrum analyzers Channels 2 Bandwidth 16MHz Algorithm FFT(18 windows)、correlation、power spectrum FFT points 8-1048576/CHN FFT measure Harmonic(1-7)、SNR、SINAD、ENOB、THD、SFDR Filter processing FIR filter supports arbitrary range of frequency sampling method , and Rectangle, bartlett, triangular, cosine, hanning, bartlett_hanning, hamming, blackman, blackman_Harris, tukey, Nuttall, FlatTop, Bohman, Parzen, Lanczos, kaiser, gaussand dolph_chebyshev, window method design. IIR filter support "Butterworth", "Chebyshev I", "Chebyshev II", "Elliptic" type of filter design Data recorder Channel 2 Impedance 1MΩ 25pF Coupling AC/DC Vertical resolution 8Bit Gain range -6V ~ 6V（probe X1） -60V ~ 60V（probe X10） Sample 1 channel : 1K~24M Hz 2 channel : 1K~16M Hz Save File The maximum 4G, recording time associated with the sampling rate DDS Wave Sine, Square(Duty circle variable),Triangle,Up Sawtooth,Down Sawtooth Amplitude ≥9Vp-p(no load) Impedance 200Ω±10% Offset ±2.5V Frequency range 1Hz ~ 16MHz(Sine), 1Hz ~ 2MHz(Others) Frequency resolution 1Hz Frequency steadiness ±1×10-3 Frequency precision ±5×10-3 Triangular wave linearity ≥98% (1Hz~10kHz) Sine wave distortion ≤0.8% (1kHz) Square wave rising/falling time ≤100ns Square wave duty circle 1%~99% SWEEP Sweep range Fs到 Fe Sweep time range 0.1 ~10 s Amplitude 0.5Vp-p ~ 10Vp-p Sweep Sweep Style Linear Sweep、Log Sweep Linear Sweep Range 1Hz-16MHz, Min 1Hz step Log Sweep Range 1Hz-10MHz, 1,10,100....Logarithmic step Note: DDS signal source, with increasing frequency, most significant output becomes smaller, tThe maximum amplitude of each frequency segment as shown below: Frequency/Vpp