Need some thoughts on this unit please.

http://www.ebay.com/itm/141102674263?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT&rmvSB=trueDigital oscilloscope

* Channels: 2

* Impedance: 1MΩ 25pF

* Coupling: AC/DC

* Vertical resolution: 8Bit

* Gain range:

-16V ~ 16V (probe X1)

-160V ~ 160V (probe X10)

* Vertical accuracy: ±3%

* Time base range: 1ns-20s

* Input Protection: Diode，50Vpk

* Auto set: Yes(10Hz to 60MHz)

* 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: 512KB/CH

* Bandwidth: 60MHz

* Max sample: 200MS/s

* Vertical mode: CH1, CH2, ADD, SUB, MUL

* Display Mode: X, Y-T and X-Y

* Measurements: Yes

* Wave save: Osc(Private), Excel and Bmp

Spectrum analyzers

* Channels: 2

* Bandwidth: 60MHz

* 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(Only ISD220A):* 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: Maximum 4G, recording time associated with the sampling rate

System: WinXP(SP3), Win7(32/64)