TOS-2020BF / 2040BF / 2050BF: with built-in 6 digits frequency counter
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Features
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Dual channel 20MHz/40MHz/50MHz |
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High sensitivity 1mV/DIV
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Z-axis modulation input, CH1 signal output
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10 times sweep magnification |
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TV synchronization, X-Y mode |
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High illumination internal graticule CRT |
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Encoder for sweep and vertical mode switch
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Fully sealed durable attenuation switch |
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ALT triggering function, enabling simultaneous observation of two independent signals |
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Trigger level lock function, Auto synchronize function |
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Built-in 1000:1 attenuator, expanded vertical sensitivity to 10V~20V/DIV |
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MODEL
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TOS-2020B
TOS-2020BF
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TOS-2040B
TOS-2040BF
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TOS-2050B
TOS-2050BF
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Vertical system
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Sensitivity
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5mV~20V/DIV, 12 steps in 1-2-5 sequence |
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Sensitivity accuracy
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≤3%; X5MAG: ≤5% |
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Vernier sensitivity
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1/2.5 or less than panel indicated value
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Bandwidth
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DC~20MHz
(X5MAG: DC~7MHz) |
DC~40MHz
(X5MAG: DC~15MHz) |
DC~50MHz
(X5MAG: DC~15MHz) |
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AC coupling
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<10Hz (at 100kHz, 8DIV, frequency response -3dB) |
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Rise time
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Approx.17.5ns
(X5MAG: Approx.50ns)
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Approx.8.75ns
(X5MAG: Approx.25ns)
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Approx.7ns
(X5MAG: Approx.23.3ns)
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Input impedance
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Approx.1MΩ//Approx.25pF
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DC balance shift |
5mV~5V/DIV: ±0.5DIV |
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Vertical mode |
CH1, CH2, DUAL (ALT/CHOP), ADD, CH2 INV
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Chopping repetition frequency |
Approx. 250kHz |
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Input coupling |
AC, GND, DC
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Max. Input voltage |
300V peak-peak (AC: frequency≤1kHz) |
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Common mode rejection ratio |
>50:1 at 50kHz sine wave (set CH1 and CH2 at same sensitivity) |
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CH2 INV BAL
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Balanced point variation≤1DIV (referred to graticule center) |
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CH1 signal output
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Min.20mV/DIV (50Ω output bandwidth 50Hz~5MHz) |
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MODEL
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TOS-2020B
TOS-2020BF
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TOS-2040B
TOS-2040BF
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TOS-2050B
TOS-2050BF
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Horizontal system
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Sweep time base
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0.2us~0.5s/DIV, 20 steps in 1-2-5 sequence
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Sweep time base accuracy |
±3%, X10MAG: ±5% (20ns~50ns/DIV uncalibrated)
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Vernier sweep time base |
≤1/2.5 of panel indicated value |
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Sweep magnification |
X10 (Max. sweep time base 20ns/DIV)
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Position shift caused by X10MAG |
Within 2DIV at CRT screen center |
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Linearity
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±5%, X10MAG: ±10% (0.2s~1us) |
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Trigger system
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Trigger mode
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AUTO, NORM, TV-V, TV-H
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Trigger level lock
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Provided
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Trigger source |
CH1, CH2, LINE, EXT |
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Trigger coupling |
AC: 20Hz to full bandwidth |
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Polarity
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“+” or “-” polarity |
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Sensitivity
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20Hz~2MHz
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2MHz~20MHz
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20MHz~40MHz
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40MHz~50MHz
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CH1, CH2
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1DIV
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1.5DIV
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2.5DIV
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3DIV
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ALT
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2DIV
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3DIV
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EXT
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200mV
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800mV
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TV: Sync pulse>1DIV (EXT: 1V)
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External trigger output signal |
Input impedance: Approx.1MΩ//Approx.25pF
Max. input voltage: 300V (DC+AC peak), AC≤1kHz
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Z-axis
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Sensitivity
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5Vp-p
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Bandwidth
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DC~2MHz
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Input impedance
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Approx.47kΩ
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Max. input voltage
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30V (DC+AC peak, AC frequency≤1kHz) |
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Calibration signal
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Waveform
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Positive-going square wave |
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Frequency
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Approx.1kHz
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Duty ratio
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<48:52
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Output voltage |
2Vp-p ±2%
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Output impedance |
Approx.1kΩ
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X-Y mode
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Sensitivity
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5mV~5V/DIV, ±3%
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Bandwidth
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DC~500kHz (-3dB) |
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X-Y phase error |
≤3°at DC~50kHz |
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Frequency counter (only for TOS-2020BF, TOS-2040BF, TOS-2050BF)
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Display
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6 digits LED
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Display accuracy
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0.01%
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CRT
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Mode
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6" rectangle, internal graticule |
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Display area
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8×10DIV (1DIV=1cm)
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Phosphor
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P31
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Accelerating voltage |
Approx.2kV (20MHz); Approx.12kV (40MHz) |
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Trace rotation |
Adjustable at front panel
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General
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Power source
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AC110V/220V±10%, 50/60Hz, Max.35VA |
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Dimension
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310×150×455mm
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Accessories
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Power cord ×1, Operation manual ×1, Probe ×2 |
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Weight
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Approx.8kg
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