Analogue / Digital Storage Oscilloscope (MDS-620)




Specifications: • DSO o 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. o 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. o 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 o Vertical axis  Sensitivity: 5mV ~ 5V / DIV, 10 steps in 1-2-5 sequence.  Sensitivity accuracy: ≤ 3% (x5MAG: ≤5%).  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: ¡Ó0.5 DIV, 1mV ~ 2mV / DIV ¡Ó2.0 DIV.  Linearity: < ¡Ó0.1 DIV of amplitude change when waveform of 2 DIV at graticule center is moved vertically.  Simultaneously: ALT or CHOP selectable at any sweep rate; ADD: CH1 + CH2 algebraic addition.  Vertical modes: CH1 single channel; CH2 single channel; DUAL: CH1 and CH2 are displayed simultaneously.  Chopping repetition frequency: Approx. 250KHz.  Input coupling: AC, GND, DC.  Maximum input voltage: 300V peak (AC: frequency 1KHz or lower).  Common mode rejection ratio: 50:1 or better at 50KHz sinusoidal wave.  Isolation between channels (at 5mV / DIV range): > 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: ≤1 DIV (reference at center graticule). o 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. o Horizontal axis  Sweep time: 0.2uSec ~ 0.5Sec / DIV, 20 steps in 1-2-5 sequence.  Sweep time accuracy: ¡Ó3%.  Vernier sweep time control: ≤1/2.5 of panel - indicated value.  Sweep magnification: 10 times.  x10MAG sweep time accuracy: ¡Ó5% (20nsec ~ 50nsec are uncalibrated).  Linearity: ¡Ó5%, x10MAG: ¡Ó10% (0.2s ~ 1us).  Position shift caused by x10MAG: Within 2DIV. at CRT screen center. o X-Y mode:  Frequency bandwidth: DC to at least 500KHz.  X-Y phase difference: ≤ 3¢X at DC ~ 50KHz.  Sensitivity: Same as vertical axis. (X-axis: CH1 input signal: Y-axis: CH2 input signal). o 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 ≤ 1KHz). o Calibration signal  Waveform: Positive - going square wave.  Frequency: Approx. 1KHz.  Duty ratio: Within 48:52.  Output voltage: 2Vp-p ¡Ó2%.  Output impedance: Approx. 1k£[. o 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: o High luminance, internal graticule CRT. o Fmax = 20MS/s. o Store depth: 1K x CH2 + 1K x 2 (reference memories). o Preset triggering function, pre-trigger signal observation. o Two channel, two reference waveform display simultaneous 4 waveform information. o The minimum sweeping speed is 10s / DIV. The ration measures the ultra low frequency signals. o Measure and display single shot, non-period signals. o Built-in RS232 interface for communication with the computer. o Analog, ultra low speed and storage oscilloscope, three in one. o 20MHz dual channel. o High sensitivity 1mV / DIV. o Z axis input. o CH1 output. o 10 times sweep magnification. o TV synchronization, X-Y mode.