Features
Dual channel 20MHz
10 times sweep magnification
TV synchronization; X-Y mode
High illumination internal graticule CRT
Japanese encoded switch, reliable and durable
Fully sealed durable attenuation switch
ALT triggering function, enabling simultaneous observation of two independent signals
Specifications
Model | TOS-2020CH | TOS-2040CH | TOS-2050CH |
Vertical system |
Sensitivity | 5mV~5V/DIV, 10 steps in 1-2-5 sequence |
Sensitivity accuracy | ≤3% |
Verniersensitivity | 1/2.5 or less than 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. 1MΩhttps://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 base | 0.2us~0.5s/DIV, 20 steps in 1-2-5 sequence |
Sweep time base accuracy | ±3%, X10MAG: ±5% (20ns~50ns/DIV uncalibrated) |
Vernier sweep time base | ≤1/2.5 of panel indicated value |
Sweep magnification | X10 (Max. sweep time base 20ns/DIV) |
Position shift caused by X10MAG | Within 2DIV at CRT screen center |
Linearity | ±5%, X10MAG: ±10% (0.2s~1us) |
Triggersystem |
Trigger mode | AUTO, NORM, TV-V, TV-H |
Trigger level lock | Not provided |
Trigger source | CH1, CH2, LINE, EXT |
Trigger coupling | AC: 20Hz to full bandwidth |
Polarity | “+” or “-” polarity |
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. 1MΩhttps://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) |
X-Y phase error | ≤3° at DC~50kHz |
Output signal |
Calibration signal | Waveform | Positive-going square wave |
Frequency | Approx. 1kHz |
Duty ratio | <48:52 |
Output voltage | 2Vpp±2% |
Output impedance | Approx. 1kΩ |
CRT |
Display | 6" rectangle, internal graticule, 8×10DIV (1DIV=1cm) |
Phosphor | P31 |
Accelerating voltage | Approx. 2kV (20MHz); Approx. 12kV (40MHz) |
Trace rotation | Adjustable at front panel |
General |
Power source | AC110V/220V±10% selectable, 50/60Hz, Max.35VA |
Accessories | Power cord ×1, Operation manual ×1, Probe ×2 Component test lead ×1 (only for TOS-2020CT, TOS-2040CT, TOS-2050CT) |
Dimension | 310×150×455mm |
Weight | Approx.8kg |
