Instek GDS-830 Digitizing Oscilloscope   GDS-830 FEATURES： 100 MHz Bandwidth and 100MSa/s Sampling Rate (each channel) 125k words per channel long record length 14 Auto Measurement Functions to get quick and accurate results A Wide Range of Triggers, include TV Trigger, Event Delay Trigger and Time Delay Trigger...etc Auto-Setting for Quick Setup and Waveform Acquisition Time Base : 2nS / DIV ~ 5S / DIV ;     Vertical : 2mV / DIV ~ 5V / DIV Four Acquisition Mode : Sample, Peak Detect, Average, Accumulate Cursor and 14 Continuously Update, Automatic Measurement : Vhi, Vlo, Vmax, Vmin, Vpp,  Vaverage, Vrms, Rise Time, Fall Time, Duty Cycle, Frequency, Period, Positive Width, Negative Width 15 sets Memory for Front Panel Setting Save & Recall 2 sets Memory for Waveform Trace Save & Recall RS-232, Parallel Printer Port and VGA Output are included as standard GPIB Interface optional   Downloadable Data Sheet       SPECIFICATIONS       Display System CRT Type 7-inch diagonal, magnetic deflection; horizontal raster scan; green phosphor Video Display Resolution 480 (Vertical) x 640 (Horizontally) dots Waveform Display Graticule 8 x 10 divisions Intensity Levels Adjustable overall intensity and contrast       Vertical System CH1 and CH 2 2mV / DIV ~ 5V / DIV Accuracy +3% Bandwidth DC ~ 100MHz (-3dB) Rise Time 3.5nS approx. Input Coupling AC, DC, GND Input Impedance 1MΩ + 1%, ~ 22pF Maximum Input 300V CAT II (DC + AC peak) Polarity Normal & Invert Waveform Processing CH1-CH2, CH1+CH2, invert Offset Range 2mV/DIV ~ 50mV/DIV :  + 0.5V, 100mV/DIV ~ 500mV/DIV : + 5V, 1V/DIV ~ 5V/DIV : + 50V Bandwidth Limit 20MHz (-3dB)       Horizontal Range 2nS/DIV ~ 5S / DIV (1-2-5 increments) Modes MAIN, WINDOW, DELAY, ROLL, X-Y Accuracy +0.01% Delay Range Pre-trigger : 10 DIV, Post-trigger : 500 DIV       Signal Acquisition         System Sampling Rate 100MSa/s Vertical Resolution 8 bits Record Length / Channel 125k dots Single Shot Record Length 125k dots Single Bandwidth 10MHz Peak Detection 20nS (10µS / DIV ~ 5V / DIV) Average 2, 4, 8, 16, ..., 256       Trigger Source CH1, CH2, LINE, EXT Modes AUTO-LEVEL, AUTO, NORMAL, SINGLE, TV, TIME-DELAY, EVENT-DELAY Coupling AC, DC, LF rej, HF rej, Noise rej Sensitivity DC ~ 25MHz : approx. 0.35 DIV or 3.5mV ; 25MHz ~ 100MHz : approx. 1 DIV or 10mV TV TV trigger sensitivity : 0.5 division of sync signal       X-Y Mode X-Axis Input/Y-Axis Input Channel 1 (CH1) / Channel 2 (CH2) Bandwidth As vertical system Phase Shift +3° at 100kHz       Cursor & Measurement Automated Voltage Measurement Vhi, Vlo, Vmax, Vmin, Vpp, Vavg, Vrms Automated Time Measurement Rise Time, Fall Time, Duty Cycle, Frequency, Period, Positive Width, Negative Width Cursor Measurement Voltage difference between cursors (ΔV)/time difference between cursors (ΔT)       Control Panel Functions Autoset "Autoset" adjust vertical volt/DIV, horizontal sec/DIV, and trigger level automatically Save/Recall Up to 15 sets of measurement conditions can be saved and recalled Waveform Trace Save/Recall 2 sets of waveform can be saved and recalled       External Trigger Range ±12V Sensitivity DC ~ 50MHz : ~ 50mV, 50MHz ~ 100MHz : ~ 100mV Input Impedance 1MΩ ±1%, ~ 22pF Maximum Input 300V CAT II (DC + AC peak)       Miscellaneous Parallel port A 25-pin IBM PC type, parallel printer interface printer compatibility CANON, EPSON, DeskJet, LaserJet.  RS-232 Interface A 9-pin male DTE RS-232 interface that complies with EIA  / TIA 574-90 GPIB Interface Option; fully programmable with IEEE 488.2 compliance Video Signal Output DB-15 rear panel video connector, VGA compatible.       Power Source Line Voltage Range 100V ~ 240V AC, automatic selection Line Frequency 48Hz ~ 63Hz Power Consumption 85Watts, 95VA maximum, with fan       Accessories Power cord x 1 ; Instruction manual x 1 ; Probes(10:1/1:1) x 2       Dimensions & Weight 330(W) x 155(H) x 385(D) mm, Approx. 7 kg