Analog Oscilloscope LODESATAR MOS-620CH 20MHz DUAL Channel

• High luminance, internal graticule CRT
• Japanese electronic encoder, light, handy and reliable
• Fully sealed long-live vertical mode switch
• ALT Triggering Function. Two independent signals
• simultaneous observation
• Build-in 6 Digit Frequency Counter
• 20MHz/40MHz/50MHz Dual Channel
• 10 times sweep magnification
• TV Synchronization-Y mode

Specification

Horizontal System

• Sweep time: 0.2uSec~0.5Sec/DIV,20steps in 1-2-5 sequence;
• Sweep time accuracy:±3%
• Vernier sweep time control:≤1/2.5 of panel-indicated and #118alue;
• Sweep magnification: 10 times;
• ×10MAG sweep time accuracy: ±5% (20nSec~50nSec are uncalibrated);
• Linearity:±5%,×10MAG: ±10% (0.2s~1us)
• Position shift caused by ×10MAG: within 2DIV. At the CRT screen center

X-Y MODE:

• Frequency bandwidth: DC to at least 500KHz;
• X-Y phase difference:≤3°at DC~50KHz
• Sensitivity: Same as the vertical axis. (X-axis: CH1 input signal; Y-axis: CH2 input signal.);

CALIBRATION VOLTAGE

• Waveform: Positive-going square wave;
• Frequency: Approx. 1KHz;
• Duty ratio: Within 48:52;
• Output voltage: 2Vp-p±2%;
• Output impedance: Approx.1KΩ

 CALIBRATION SIGNAL 

• Waveform: Positive-going square wave;
• Frequency: Approx. 1KHz;
• Duty ratio: Within 48:52;
• Output voltage: 2Vp-p±2%;
• Output impedance: Approx.1KΩ

 CRT

• Type: 6-inch rectangular type, internal graticule;
• Phosphor: P31;
• Acceleration voltage: Approx.2KV(20MHz)/Approx.12kv(40MHz);
• Effective screen size:8×10DIV[1DIV=10mm(0.39in)];
• Graticule: Internal;
• Trace rotation: Provided

VERTICAL AXIS

• Sensitivity:5mV~5V/DIV,10 steps in 1-2-5sequence
• Sensitivity accuracy:≤3%
• Vernier vertical sensitivity: Continuously variable to 1/2.5 or less of panel-indicated and #118alue Frequency
• bandwidth: DC~20MHz(x5MAG: DC~7MHz)/DC~40MHz(x5MAG: DC~15MHz)DC~50MHz(X5MAG: DC~15MHz)
• AC coupling: Low limit frequency 10Hz. (Concerning 100KHz, 8DIV, Frequency response with-3dB.)
• Rise time: Approx.17.5ns (x5 MAG: Approx.50nS) Approx.8.75ns (x5 MAG: Approx.25nS)
• Approx.7ns (x5 MAG: Approx.23.3nS)
• Input impedance: Approx.1MΩ/Approx.25pF
• DC balance shift: 5mV~5V/DIV: ±0.5DIV, 1mV~2mV/DIV ±2.0DIV
• Linearity:<±0.1DIV of amplitude change when the waveform of 2DIV at the graticule center is moved vertically
• vertical 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
• Chopping repetition frequency: Approx. 250KHz
• Input coupling: AC, GND,  DC
• Maximum input voltage: 300Vpeak (AC: frequency 1KHz or lower);
• common-mode rejection ratio: 50:1 or better at 50KHz sinusoidal wave.
• (When sensitivities of Ch1 and Ch2 are set equally)
• Isolation between channels (At 5mV/DIV range): >1000:1 at 50KHz; >30:1 at 15MHz/>30:1 at 35MHz/>30:1 at 45MHz
• CH2 INV BAL: Balanced point variation:≤1DIV (Reference at center graticule)

TRIGGERING

• Triggering source: CH1,CH2,LINE,EXT
• Coupling: AC: 20Hz to full bandwidth
• SLOPE: /-
• Sensitivity: 20Hz~2MHz:1DIV, 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 1 DIV (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:1MΩ/approx.25pF;
• Max. input voltage:300V (DC AC peak), AC: Frequency not higher than 1KHz