Lodestar MDS-620 Analog Oscilloscope

Specifications: * DSO 1.Vertical system -Vertical resolution: 8 bits ( 28 point / DIV) . -Accuracy: + / -3% + / -0.4mm ( x5MAG: + / -5% + / -0.4mm) . -Equivalent bandwidth: DC ~ 8MHz, -3dB, sine interpolate. -Interpolation: Sine / line. 2.Horizontal system -Maximum sample rates: 20mS/ s. -Horizontal resolution: 10 bits ( 100 point / DIV) . -Time base: 0.2us / DIV ~ 10s / DIV ( x10MAG: 1s / DIV ~ 20ns / DIV) . -Sweep mode: Auto, norm, roll. -Saved waveform expand rate: Maximum 100. -Trigger preset: DIV 2, 5, 8. 3.Display -View time: 0.2s ~ 5s adjustable. -Display memory length: 1, 024 byte / CH. -Reference memory length: 1, 024 byte / CH. -RS232 interface transfer rate: 19200. * Analog 1.Vertical axis -Sensitivity: 5mV ~ 5V / DIV, 10 steps in 1-2-5 sequence. -Sensitivity accuracy: d 3% ( x5MAG: d5% ) . -Vernier vertical sensitivity: To 1/ 2.5 or less of panel - indicated value. -Frequency bandwidth: DC ~ 20MHz ( x5MAG: DC ~ 7MHz) . -AC coupling: Low limit frequency 10Hz. ( With reference to 100KHz, 8 DIV, frequency response with -3dB) . -Rise time: Approx. 17.5ns ( x5MAG: Approx. 50nS) . -Input impedance: Approx. 1M£ [ / Approx. 25pF. -DC balance shift: 5mV ~ 5V / DIV: ¡ Ó 0.5 DIV, 1mV ~ 2mV / DIV ¡ Ó 2.0 DIV. -Linearity: 1000: 1 at 50KHz; > 30: 1 at 20MHz. -CH1 signal output: At least 20mV / DIV into a 50£ [ termination. Bandwidth is 50Hz to at least 5MHz. -CH2 INV BAL: Balanced point variation: d1 DIV ( reference at center graticule) . 2.Triggering -Triggering source: CH1, CH2, LINE, EXT. -Coupling: AC: 20Hz to 20MHz. -Slope: + / -. -Sensitivity: 20Hz ~ 2MHz: 0.5DIV, TRIG-ALT: 2DIV, EXT: 200mV; 2 ~ 20MHz: 1.5DIV, TRIG-ALT: 3DIV, EXT: 800mV; TV: Sync pulse more than 1DIV ( EXT: 1V) . -Triggering modes: Auto; Norm; TV-V; TV-H; ( Both TV-V and TV-H synchronize only when the synchronizing signal is negative) . -EXT triggering signal input - input impedance: Approx. 1M£ [ / approx. 25pF. -Max. input voltage: 300V ( DC + AC peak) , AC: Frequency not higher than 1KHz. 3.Horizontal axis -Sweep time: 0.2uSec ~ 0.5Sec / DIV, 20 steps in 1-2-5 sequence. -Sweep time accuracy: ¡ Ó 3% . -Vernier sweep time control: d1/ 2.5 of panel - indicated value. -Sweep magnification: 10 times. -x10MAG sweep time accuracy: ¡ Ó 5% ( 20nsec ~ 50nsec are uncalibrated) . -Linearity: ¡ Ó 5% , x10MAG: ¡ Ó 10% ( 0.2s ~ 1us) . -Position shift caused by x10MAG: Within 2DIV. at CRT screen center. 4.X-Y mode: -Frequency bandwidth: DC to at least 500KHz. -X-Y phase difference: d 3¢ X at DC ~ 50KHz. -Sensitivity: Same as vertical axis. ( X-axis: CH1 input signal: Y-axis: CH2 input signal) . 5.Z axis -Sensitivity: 5Vp-p ( Positive-going signal: decreases intensity) . -Frequency bandwidth: DC ~ 2MHz. -Input Impedance: Approx. 47k£ [ . -Maximum input voltage: 30V ( DC + AC peak, AC frequency d 1KHz) . 6.Calibration signal -Waveform: Positive - going square wave. -Frequency: Approx. 1KHz. -Duty ratio: Within 48: 52. -Output voltage: 2Vp-p ¡ Ó 2% . -Output impedance: Approx. 1k£ [ . 7.CRT -Type: 6-inch rectangular type, internal graticule. -Phosphor: P31. -Acceleration voltage: Approx. 2KV. -Effective screen size: 8 x 10DIV [ 1DIV = 10mm ( 0.39in) ] . -Trace rotation: Provided. Features: -High luminance, internal graticule CRT. -Fmax = 20MS/ s. -Store depth: 1K x CH2 + 1K x 2 ( reference memories) . -Preset triggering function, pre-trigger signal observation. -Two channel, two reference waveform display simultaneous 4 waveform information. -The minimum sweeping speed is 10s / DIV. The ration measures the ultra low frequency signals. -Measure and display single shot, non-period signals. -Built-in RS232 interface for communication with the computer. -Analog, ultra low speed and storage oscilloscope, three in one. -20MHz dual channel. -High sensitivity 1mV / DIV. -Z axis input. -CH1 output. -10 times sweep magnification. -TV synchronization, X-Y mode.