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MOS-620CH 20mhz 2 channel analog oscilloscope
Technical Specifications:
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