Wholesale Factory Price Rek 20Mhz Dual Trace Oscilloscope MOS620CH Analog oscilloscope/READOOT OSCILLOSCOPE/CRO

Model

Specifications

20MHz Oscilloscope

Vertical Axis

Sensitivity

5mV~5V/DIV, 10 steps in 1-2-5 sequence

Vernier Vertical Sensitivity

To 1/2.5 or less of panel-indicated value.

Frequency bandwidth

DC~20MHz

AC coupling: Low limit frequency 10Hz. (With reference to 100KHz, 8DIV. Frequency response with-3dB.)

Rise time

Approx. 17.5nS

Input impedance

Approx. 1M ohm//Approx.25pF

DC balance shift

Adjustable on panel

Linearity

≤ ±0.1 DIV of amplitude change when waveform of 2 DIV at graticule center is moved vertically.

Vertical modes

CH1: CH1 single channel.

CH2: CH2 single channel.

DUAL: CH1 and CH2 are displayed. 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

400V (DC+AC peak), AC: frequency 1KHz or lower

When set probe switch at 1:1, the maximum effective readout is 40V pp (14 Vrms at sine wave),

Or set prove switch at 10:1, the maximum effective readout is 400 V pp (140 Vrms at sine wave).

Common mode rejection ratio

50:1 better at 50KHz sinusoidal wave. (When sensitivities of CH1 and CH2 are set equally)

Isolation between channels

(At 5m V/DIV range)

>1000:1 at 50 KHz

>30:1 at 15 KHz

CH2 INV BAL

Balanced point variation: ≤1 DIV (Reference at center graticule)

Triggering

Triggering Source

CH1, CH2, LINE, EXT(CH1and CH2 can be selected only when the vertical mode is DUAL or ADD). In ALT mode, if the TRIG.ALT switch is pushed in, it can be used for alternate triggering of two different sources.

Coupling

AC: 20Hz to full bandwidth

Slope

+/-

Sensitivity

20Hz~2MHz: 0.5DIV, TRIG-ALT:2 DIV, EXT:200mV

2-20MHz: 1.5 DIV

TRIG-ALT:3 DIV, EXT:800mV

TV: Sync Pulse more than 1 DIV(EXT: 1V)

Triggering Modes

AUTO: Sweeps run in the free mode when no triggering input signal is applied. (Applicable for repetitive signals of frequency 25Hz or over)

NORM: When no triggering signal is applied, the trace is in the ready state and not displayed.

TV-V: This setting is used when observing the entire vertical picture of television signal.

TV-H: This setting id used when observing the entire horizontal picture of television signal.

EXT triggering signal input

Input impedance Max. Input Voltage

Approx: 1M ohm//Approx. 25 pF

400V (DC+AC peak), AC: Frequency not higher than 1KHz

Horizontal Axis

Sweep time

0.2 uSec ~ 0.5Sec/DIV, 20 steps in 1-2-5 sequence

Sweep time accuracy

+/-3% (10°C-35°C)

Vernier sweep time control

≤1/2.5 of panel-indicated value

Sweep magnification

10 times

x10MAG sweep time accuracy

+/-5%(20nSec~50nSec are uncalibrated)

Linearity

+/-5%, x10MAG: +/-10% (0.2s and 1us)

Position shift caused by x10MAG

Within 2 DIV at CRT screen center

X-Y Mode

Sensitivity

Same as vertical axis

Frequency bandwidth

DC to at least 500 KHz

X-Y phase difference

≤3°at DC~50 KHz

Calibration Voltage

Waveform

Positive-going square wave

Frequency

Approx. 1KHz

Duty ratio

Within 48:52

Output voltage

2V p-p +/-2%

Output impedance

Approx. 1K ohm

CRT

Type

P31

Phosphor

Approx. 2KV

Acceleration voltage

Approx. 2kV

Effective screen size

8x10 DIV (1 DIV=10mm (0.39 in))

Graticule

Internal

Trace rotation

Provided