Analogue Oscilloscope (MOS-620B (20MHz), MOS-640B (40MHz), MOS-650B (50MHz))




Specifications: • Horizontal system o Sweep time: 0.2usec ~ 0.5sec / DIV, 20 steps in 1-2-5 sequence. o Sweep time accuracy: ±3%. o Vernier sweep time control: ≤1/2.5 of panel - indicated value. o Sweep magnification: 10 times. o x10MAG sweep time accuracy: ±5% (20nsec ~ 50nsec are uncalibrated). o Linearity: ±5%, x10MAG: ±10% (0.2s ~ 1us). o Position shift caused by x10MAG: Within 2DIV. at CRT screen center. • X-Y mode: o Frequency bandwidth: DC to at least 500KHz. o X-Y phase difference: ≤ 3° at DC ~ 50KHz. o Sensitivity: Same as vertical axis. (X-axis: CH1 input signal: Y-axis: CH2 input signal). • Z axis o Sensitivity: 5Vp-p (Positive-going signal: decreases intensity). o Frequency bandwidth: DC ~ 2MHz. o Input Impedance: Approx. 47kΩ. o Maximum input voltage: 30V (DC + AC peak, AC frequency ≤ 1KHz). • Calibration signal o Waveform: Positive - going square wave. o Frequency: Approx. 1KHz. o Duty ratio: Within 48:52. o Output voltage: 2Vp-p ±2%. o Output impedance: Approx. 1kΩ. • CRT o Type: 6-inch rectangular type, internal graticule. o Phosphor: P31. o Acceleration voltage: Approx. 2KV (20MHz) / Approx. 12KV (40MHz). o Effective screen size: 8 x 10DIV [1DIV = 10mm (0.39in)]. o Graticule: Internal. o Trace rotation: Provided. • Vertical axis o Sensitivity: 5mV ~ 20V / DIV, 12 steps in 1-2-5 sequence. o Sensitivity accuracy: ≤ 3% (x5MAG ≤ 5%). o Vernier vertical sensitivity: Continuously variable to 1 / 2.5 or less of panel - indicated value. o Frequency bandwidth:  DC ~ 20MHZ (x5 MAG: DC ~ 7MHz).  DC ~ 40MHz (x5 MAG: DC ~ 15MHz).  DC ~ 50MHz (x5 MAG: DC ~ 15MHz). o AC coupling: Low limit frequency 10Hz. (With reference to 100KHz, 8DIV, frequency response with -3dB.) o Rise time:  Approx. 17.5nS (x5 MAG: Approx. 50nS)  Approx. 8.75nS (x5 MAG: Approx. 25nS).  Approx. 7nS (x5 MAG: Approx. 23.3nS). o Input impedance: Approx. 1MΩ / Approx. 25pF. o DC balance shift: 5mV ~ 5V / DIV; 1mV ~ 2mV / DIV ±2.0DIV. o Linearity: < ±0.1DIV of amplitude change when waveform of 2DIV at graticule center is moved vertically. o Vertically modes  CH1 single channel; CH2 single channel.  DUAL: CH1 and CH2 are displayed simultaneously.  ALT or CHOP selectable at any sweep rate.  ADD: CH1 + CH2 algebraic addition. o Chopping repetition frequency: Approx. 250KHz. o Input coupling: AC, GND, DC. o Maximum input voltage: 300Vpeak (AC: frequency 1KHZ or lower). o Common mode rejection ratio: 50:1 or better at 50KHz sinusoidal wave. (When sensitivities of CH1 and CH2 are set equally). o Isolation between channels (at 5mV / DIV range): > 1000:1 at 50KHz; > 30:1 at 15MHz / > 30:1 at 35MHz / > 30:1 at 45MHz. o CH1 signal output: At least 20mV / DIV into a 50Ω termination. Bandwidth is 50Hz to at least 5MHz. o CH2 INV BAL: Balanced point variation: ≤ 1DIV (reference at center graticule). • Triggering o Triggering source: CH1, CH2, LINE, EXT. o Coupling: AC: 20Hz to full bandwidth. o Slope: + / -. o Sensitivity: 20Hz ~ 2MHz: 0.5DIV, TRIG-ALT: 2DIV, EXT: 200mV; TRIG-ALT: 3DIV, EXT: 800mV, 2 ~ 20MHz: 1.5DIV; 20MHz - 40MHz: 2.5DIV; 40MHz ~ 50MHz: 3DIV; TV: Sync pulse more than 1DIV (EXT: 1V). o Triggering modes: Auto; Norm; TV-V; TV-H; (Both TV-V and TV-H synchronize only when the synchronizing signal is negative). o EXT triggering signal input - input impedance: Approx. 1MΩ / approx. 25pF. o Max. input voltage: 300V (DC + AC peak), AC: Frequency not higher than 1KHz. Features: • High luminance, internal graticule CRT. • Encoder for sweep and vert mode switch. • ALT triggering function, two independent signals simultaneous observation. • Triggering level lock function, automatic synchronize function. • Built-in 1000:1 attenuator expended vertical sensitivity to 10V ~ 20V / DIV. • 20MHz / 40MHz / 50MHz dual channel. • High sensitivity 1mV / DIV. • Z axis input. • CH1 output. • 10 times sweep magnification. • TV synchronization, X-Y mode.