DIGITAL FEATURES 1024 x 8-Bit Memory Vertical resolution of 1 in 256 {approximately 30 steps/div) and horizontal resolution of 1 in 1024 (100 samples/div). 2 Msample/sec Sampling Rate Allows capture of one time events with pulse widths of 5 ps or greater. Equivalent Time Sampling Allows repetitive waveforms of up to 20 MHz to be digitized and stored. Capture Pretrigger Information Allows selection of 0%, 25%, 75%, or 100% of the stored waveform to be pretrigger information. Armed Store Mode In the Armed/Store mode the oscilloscope begins storing information on trigger and continues through the entire sweep. Roll Mode In the Roll mode of operation, the trace moves across the display from right to left like a strip chart recorder. Ideal for capturing very slow events and pretrigger information. DUAL TRACE FEATURES Dual Trace Model 2520 has two vertical input channels for displaying two waveforms simultaneously. Selectable single trace (either CH 1 or CH 2) or dual trace for both analog and digital operating modes. Alternate or chop sweep automatically selected by TIME/DIV control. Sum and Difference Capability Permits algebraic addition or subtraction of channel 1 and channel 2 waveforms in the analog operating mode, displayed as a single trace. Useful for differential voltage and distortion measurements. CRT FEATURES Rectangular CRT Rectangular CRT with large 8 x 10 centimeter viewing area. Internal 8 x 10 division graticule eliminates parallax error. Convenience Trace rotation electrically adjustable from front panel. 10% and 90% markers for rise time measurements. VERTICAL FEATURES High Sensitivity 2 mV/div sensitivity for full bandwidth. Calibrated Voltage Measurements Accurate voltage measurements (±3%) on 12 calibrated ranges from 2 mV/div to 10 V/ div* Vertical gain fully adjustable between calibrated ranges. CWTT1?P A *t»TTD T?C DW JuiSrX^ 1! Hrill UIvJliu Calibrated Time Measurements Accurate (±3%) time measurements. In analog display mode, Model 2520 has 18 calibrated ranges from 0.2 s/div to 0.5 tfs/div. Sweep time is fully adjustable between calibrated ranges. In digital display mode, 26 calibrated ranges are available from 0.5 ps/div to 50 sec/div. X10 Sweep Magnification Allows closer examination of waveforms, increases maximum sweep rate to 50 ns/div. Allows digitized waveforms to be expanded even after they have been stored. TRIGGERING FEATURES Auto Sweep Selectable Auto sweep provides sweep without trigger input, automatically reverts to triggered sweep operation when adequate trigger is applied. Triggered Sweep (Normal Triggering) Sweep remains at rest unless adequate trig-* ger signal is applied. Fully adjustable trigger level and (+) or (-) slope. Three Trigger Sources Three trigger source selections, including CH 1, CH 2, and Ext Trig. Three Trigger Coupling Choices Selectable AC, DC, or TV trigger coupling. Video Sync Frame or Line triggering selectable for observing composite video waveforms. X-Y Operation Channel 1 can be applied as horizontal deflection (X-axis) while channel 2 provides vertical deflection (Y-axis). OTHER FEATURES Z MOD Input Intensity modulation capability permits time or frequency markers to be added. Trace decreases in intensity with positive signal, TTL compatible. Built-In Probe Adjust Square Wave A 1 V p~p, 1 kHz square wave generator permits probe compensation adjustment. Supplied With Probes Oscilloscope comes with two identical 10:1 probes (Model PR-47). Plotter Output Rear panel outputs allow a stored waveform to be fed to an analog plotter.