Description

Introduction Lodesatar MOS-620CH 20Mhz dual channel analog oscilloscope 

The LODESATAR MOS-620CH 20MHz Dual Channel Analog Oscilloscope stands as one of the most trusted analog oscilloscopes in the Bangladesh laboratory and electronics market. Engineers, students, and technicians choose this model because it combines robust construction with precision measurement capabilities. The MOS-620CH operates across 20MHz, 40MHz, and 50MHz bandwidths on two independent channels, making it versatile enough for both academic demonstrations and professional circuit analysis.

Furthermore, the built-in 6-digit frequency counter eliminates the need for a separate counter unit, saving both bench space and budget. The high-luminance, 6-inch rectangular CRT with an internal graticule produces sharp, easy-to-read waveforms even in brightly lit environments. ALT triggering allows simultaneous observation of two completely independent signals, which proves invaluable during comparative signal testing. With a fully sealed vertical mode switch that ensures long service life and Japanese electronic encoder components for light, handy, and reliable operation, the LODESATAR MOS-620CH 20MHz Dual Channel Analog Oscilloscope earns its place as a go-to instrument for any serious electronics workspace.

Specifications

Lodesatar MOS-620CH 20Mhz dual channel analog oscilloscope 

General

Brand	LODESATAR (LODESTAR)
Model	MOS-620CH
Type	Analog Oscilloscope
Channels	2 (Dual Channel)
Country of Origin	China
Display	6-inch rectangular, high-luminance internal graticule CRT
Power Consumption	Approximately 35 W

Vertical System

Bandwidth	DC~20 MHz (×5 MAG: DC~7 MHz) / DC~40 MHz (×5 MAG: DC~15 MHz) / DC~50 MHz (×5 MAG: DC~15 MHz)
AC Coupling Low Limit	10 Hz (reference: 100 KHz, 8 DIV, −3 dB)
Rise Time	Approx. 17.5 ns (×5 MAG: approx. 50 ns) / 8.75 ns (×5 MAG: approx. 25 ns)
Sensitivity	5 mV ~ 5 V/DIV, 12 steps in 1-2-5 sequence
Vernier Vertical Sensitivity	Continuously variable to 1/2.5 or less of panel-indicated value
DC Balance Shift	5 mV~5 V/DIV: ±0.5 DIV; 1 mV~2 mV/DIV: ±2.0 DIV
Max Input Voltage	400 V (DC + AC peak); AC frequency not higher than 1 KHz
Input Impedance	Approx. 1 MΩ / approx. 25 pF
Vertical Operating Modes	CH1, CH2, DUAL (ALT/CHOP), ADD

Horizontal System

Sweep Time	0.2 µs ~ 0.5 s/DIV, 20 steps in 1-2-5 sequence
Sweep Time Accuracy	±3%
Vernier Sweep Time Control	≤ 1/2.5 of panel-indicated value
Sweep Magnification	×10 (×10 MAG)
×10 MAG Sweep Accuracy	±5% (20 ns ~ 50 ns uncalibrated)
Linearity	±5%; ×10 MAG: ±10% (0.2 s ~ 1 µs)
Position Shift (×10 MAG)	Within 2 DIV at CRT screen centre

Triggering System

Triggering Modes	AUTO, NORM, TV
Triggering Source	CH1, CH2, LINE, EXT, EXT/5
Triggering Signal Input	Approx. 1 MΩ / approx. 25 pF
EXT Triggering Sensitivity (DC~10 MHz)	Approx. 0.5 V
EXT Triggering Sensitivity (10~20 MHz)	Approx. 1.5 V
TV Triggering	TV-V (Field) and TV-H (Line) synchronisation
ALT Triggering	Yes — two independent signals simultaneously

X-Y Mode

X-Axis Sensitivity	Same as vertical axis (CH1 input signal)
Y-Axis Sensitivity	Same as vertical axis (CH2 input signal)
Phase Difference (DC~50 KHz)	≤ 3°

Z-Axis (Intensity Modulation)

Sensitivity	Approx. 5 V p-p for full brightness modulation
Bandwidth	DC to at least 500 KHz

Calibration Signal

Voltage	Approx. 0.5 V p-p
Frequency	Approx. 1 KHz
Waveform	Square wave

Frequency Counter

Display	6 digits built-in
Measurement Range (CH1/CH2)	DC-coupled input
Frequency Bandwidth (EXT IN)	DC to at least 500 KHz
Max Input Voltage (EXT IN)	400 V (DC + AC peak), AC not > 1 KHz

 

Key Features Lodesatar MOS-620CH 20Mhz dual channel analog oscilloscope 

1. Built-in 6-digit frequency counter for direct frequency reading without external equipment
2. Dual-channel operation at 20MHz / 40MHz / 50MHz bandwidth for versatile signal analysis
3. High-luminance, 6-inch rectangular internal graticule CRT ensures crisp waveform display
4. ALT triggering function enables simultaneous observation of two independent signals
5. 10× sweep magnification (×10MAG) for detailed examination of fast transient signals
6. TV synchronization with X-Y mode for TV waveform and Lissajous pattern display
7. Fully sealed long-life vertical mode switch for reliable, maintenance-free operation
8. Japanese electronic encoder design — compact, lightweight, and highly durable
9. Sweep time range: 0.2 µs to 0.5 s/DIV in 20 steps (1-2-5 sequence)
10. Maximum input voltage: 400 V (DC + AC peak) for safe measurement of real-world circuits
11. Sensitivity: 5 mV to 5 V/DIV with ±3% sweep accuracy
12. Rise time: approximately 17.5 ns for capturing fast signal transitions

 

Applications Lodesatar MOS-620CH 20Mhz dual channel analog oscilloscope 

1. University and college physics & electronics laboratory experiments
2. Secondary and higher-secondary level science lab demonstrations
3. Electronics repair shops for diagnosing faulty components and circuits
4. Research and development labs for prototype circuit testing
5. Industrial maintenance for monitoring power supply waveforms
6. Audio and RF signal analysis in broadcast and communication setups
7. Quality control testing on manufactured PCBs and electronic assemblies
8. Polytechnic institute training on analog oscilloscope operation

 

Who Uses This Lodesatar MOS-620CH 20Mhz dual channel analog oscilloscope 

1. University and college laboratory technicians who need a reliable classroom instrument
2. Electronics engineers working on circuit design and debugging
3. Biomedical equipment technicians calibrating and testing medical devices
4. Telecommunication professionals verifying signal integrity
5. Hobbyists and DIY electronics enthusiasts who require professional-grade accuracy
6. Factory QC inspectors checking waveform characteristics on production lines
7. Physics teachers who conduct live demonstrations for students
8. Vocational training institutes that teach practical electronics skills

Frequently Asked Questions (FAQ) Lodesatar MOS-620CH 20Mhz dual channel  analog oscilloscope 

Q: What is the bandwidth of the LODESATAR MOS-620CH?

A: The MOS-620CH supports three bandwidth settings: DC~20 MHz, DC~40 MHz, and DC~50 MHz on both channels. In ×5 MAG mode, bandwidth reduces to DC~7 MHz (20 MHz setting) or DC~15 MHz (40/50 MHz settings). This range covers the vast majority of analog signal measurement tasks in education and electronics engineering.

Q: Does the MOS-620CH include a frequency counter?

A: Yes. The MOS-620CH features a built-in 6-digit frequency counter. This counter displays frequency directly on the oscilloscope panel, removing the need for a standalone frequency counter and simplifying your test bench setup.

Q: Can I view two signals at the same time on this oscilloscope?

A: Yes. The MOS-620CH provides dual-channel operation with ALT triggering. ALT triggering alternates the sweep between CH1 and CH2, allowing you to observe two completely independent signals simultaneously on the same CRT screen.

Q: What is the maximum input voltage the probes can handle?

A: The oscilloscope accepts a maximum input voltage of 400 V (DC + AC peak) on both BNC inputs. For AC signals, the frequency must not exceed 1 KHz at the maximum voltage level. Always use appropriately rated probes for your measurement environment.

Q: Is this oscilloscope suitable for a university physics lab?

A: Absolutely. Manufacturers and distributors specifically position the MOS-620CH as a student-grade dual-channel oscilloscope with 20 MHz bandwidth. Its intuitive panel layout, durable fully sealed switch, and reliable CRT make it a popular choice for university, college, and polytechnic institute laboratories across Bangladesh.

Why Buy from ASTZ BD Lodesatar MOS-620CH 20Mhz dual channel analog oscilloscope 

1. ASTZ BD sources the LODESATAR MOS-620CH directly from authorised distributors, guaranteeing product authenticity and full manufacturer specifications on every unit.
2. We offer competitive pricing for the Bangladesh market with transparent costs — no hidden charges or surprise delivery fees.
3. Our technical team provides pre-purchase consultation to help you confirm that the MOS-620CH suits your specific lab or field measurement requirements.
4. ASTZ BD processes and dispatches orders quickly, reaching customers across Dhaka, Chittagong, Sylhet, Rajshahi, and other divisions through reliable courier partners.
5. We back every oscilloscope with after-sales support, including troubleshooting guidance and warranty claim assistance.
6. Our secure online payment gateway accepts bKash, Nagad, credit/debit cards, and bank transfer for a smooth shopping experience.
7. Thousands of satisfied laboratory professionals and institutions across Bangladesh trust ASTZ BD for their precision instrument needs.