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.