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TWINTEX TOS-2020CF Analog Oscilloscope 20MHz with built-in 6 digits frequency counter

Product details
Channel:2CH;Sweep magnification:10 times;
Bandwidth:20MHz;Supply Ability:2000 Piece/Pieces per Month;
Place of Origin:China;Type:Analog;
Display:High illumination internal graticule CRT;Payment Terms:L/C,T/T,Western Union;
Packaging Detail:Double-Layer cartons;Model Number:TOS-2020CF;
Brand Name:TWINTEX;Function:TV synchronization; X-Y mode; ALT triggering function;
Certificate:CE;Port:SHENZHEN or HONG KONG;
Vertical Sensitivity:5mV~5V/DIV, 10 steps in 1-2-5 sequence;

TWINTEX TOS-2020CF Analog Oscilloscope 20MHz with built-in 6 digits frequency counter 

 

Features

Dual channel 20MHz/30MHz/40MHz
10 times sweep magnification
TV synchronization; X-Y mode
High illumination internal graticule CRT
Encoded switch, reliable and durable
Fully sealed durable attenuation switch
ALT triggering function, enabling simultaneous observation of two independent signals

 

Specifications

 

Model

20MHz

40MHz

50MHz

Vertical system

Sensitivity

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

Accuracy

≤3%

Vernier sensitivity

≤1/2.5 of panel indicated value

Bandwidth

DC (AC 10Hz)~20MHz

DC (AC 10Hz)~40MHz

DC (AC 10Hz)~50MHz

AC coupling

<10Hz (at 100kHz, 8DIV, frequency response -3dB)

Rise time

Approx. 17.5ns

Approx. 8.75ns

Approx. 7ns

Input impedance

Approx. 1MΩ//Approx. 25pF

DC balance shift

5mV~5V/DIV: ±0.5DIV

Vertical mode

CH1, CH2, DUAL (ALT/CHOP), ADD, CH2 INV

Chopping repetition frequency

Approx. 250kHz

Input coupling

AC, GND, DC

Max. Input voltage

400V peak-peak, AC frequency≤1kHz

Common mode rejection ratio

>50:1 at 50kHz sine wave (set CH1 and CH2 at same sensitivity)

CH2 INV BAL

Balanced point variation≤1DIV (referred to graticule center)

 

Horizontal system

Sweep time

0.2us~0.5s/DIV, 20 steps in 1-2-5 sequence

Accuracy

±3%, X10MAG: ±5% (20ns~50ns/DIV uncalibrated)

Vernier sweep time control

≤1/2.5 of panel indicated value

Sweep magnification

X10 (fastest sweep time 20ns/DIV)

Position shift@X10MAG

≤2DIV at CRT screen center

Linearity

±5%, X10MAG: ±10% (0.2s~1us)

Trigger system

Trigger mode

AUTO, NORM, TV-V, TV-H

Trigger level lock

Not provided

Trigger source

CH1, CH2, ALT, LINE, EXT

Trigger coupling

AC: 20Hz to full bandwidth

Trigger slope

“+” or “-”

Sensitivity

Frequency

20Hz~2MHz

2MHz~20MHz

20MHz~40MHz

40MHz~50MHz

CH1, CH2

1DIV

1.5DIV

2.5DIV

3DIV

ALT

2DIV

3DIV

 

 

EXT

200mV

800mV

 

 

TV

Sync pulse>1DIV (EXT: 1V)

External trigger input

Input impedance

Approx. 1MΩ//Approx. 25pF

Max. input voltage

400V (DC+AC peak), AC frequency≤1kHz

X-Y mode

Sensitivity

5mV~5V/DIV±3%

X-axis bandwidth

DC~500kHz (-3dB)

Phase error

≤3° at DC~50kHz

Calibration signal output

Waveform

Positive-going square wave

Frequency

Approx. 1kHz

Duty ratio

<48:52

Output voltage

2Vpp±2%

Output impedance

Approx. 1kΩ

Frequency counter (only for TOS-2020CF, TOS-2040CF, TOS-2050CF)

Display

6 digits LED

Accuracy

±0.01%

Component test (only for TOS-2020CT, TOS-2040CT, TOS-2050CT)

Testing subject

Resistor, Capacitor, Coil, Diode, Zener or simple combination of the components

Testing voltage

Approx. 9Vac pp

Testing frequency

50/60Hz

Testing current

Approx. 0.6mA

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