... Digital Oscilloscope *25MHz,2CH GWinstek GDS-1022 Digital Oscilloscope(25MHz,2CH)Features100/60/40/25 MHz ... Connection 6-Digit Real-Time Frequency Counter SD Card Supported GDS-1022GDS-1042GDS-1062GDS-1102VERTICALChannels2222BandwidthDC ~ 25MHz (-3dB)DC ~ 40MHz (-3dB)DC ... Card SlotImage (BMP), waveform data (CSV), and setup (SET) GWinstek GDS-1022 Digital Oscilloscope(25MHz,2CH)