Features: 4CH oscilloscope+EXT+DVM+auto range function. 250MHz bandwidth,minimum range 500μV /div,1GS/s sample rate. Over 32 types of auto measurement function. Advanced digital trigger system, high trigger sensitivity. Over 14 types of trigger function: edge, overtime, pulse, pattern, interval, etc. Function/arbitrary signal generator25MHz,12BitS resolution, 200MHz DDS, ARB/square wave/sine wave/triangular wave/trapezoidal wave/impulse wave/DC etc.,easy to simulate the sensor. Integrated USB Host/Device, convenient to communicate with PC. Support U-stick storage/system update. Support a variety of SCPI remote control command Support optional RS232 port, LAN port, HDMI port, touch screen, WIFI communication, SD card storage. Stable and reliable quality, sturdy and durable. Specifications: Size: as the picture Weight: 4060g Model DS04254C Bandwidth 250MHz Horizontal Sample Rate Range 1GS/S Waveform Interpolation (sin x)/x Record Length Maximum 64K samples per single-channel; Maximum 32K samples per dual-channel (4K, 32K optional) SEC/DIV Range 2ns/div~100s/div 1.2,5 sequence Sample Rate and ±50ppm Delay Time Accuracy Single-shot, Normal mode Delta Time ± (1 sample interval +100ppm x reading + 0.6ns) Measurement Accuracy >16 averages (Full Bandwidth) ± (1 sample interval +100ppm x reading + 0.4ns) Sample interval = s/div + 200 Vertical AD converter 8-bit resolution,each channel sampled simultaneously VOLTS/DIV Range 500pV/div to 10V/div at input BNC Position Range 500pV/div-20mV/div. ±400mV 50mV/dlv-200mV/div. ±2V 500mV/div-2V/div. ±40V 5V/dlv-10V/div. ±50V Selectable Analog Bandwidth Limit typical 20MHz Low Frequency Response (-3db) ≤ 10HZ at BNC Rise Time at BNC. typical