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.