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 Benchtop Oscilloscope |  | BOS Series |  |  
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      	| The BOS Series comprises
dual-channel oscilloscopes with
frequency bandwidths of
40 to 100 MHz at -3 dB, a maximum
sweep of 10 ns, a maximum
sensitivity of 1 mV/DIV, and
150 mm rectangular CRT with
internal graticule.
 These oscilloscopes are rugged,
easy to operate, and highly reliable.
They are ideal for research, production, and electronics
applications. The BOS converts a
high-input differential voltage
(≤1300 Vp) into a low voltage
(≤6.5V).
 Optional accessories include
differential voltage probes, which
provide a safe means of measuring
a floating potential.
 
 
 
| Models | BOS-200 | BOS-205 | BOS-350 | BOS-355 | BOS-605 | 
|---|
 | Cathode Ray Tube | 6" diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV = 1 cm), B31 phosphor, 2 kV acceleration voltage | 6" diagonal, rectangular screen with internal graticule 8 x 10 DIV (1 DIV = 1 cm), B31 phosphor, 12 kV accel voltage |  
 | Vertical Deflection | 
|---|
 
 | Bandwidth | DC to 20 MHz (-3 dB) | DC to 40 MHz (-3 dB) | DC to 60 MHz (-3 dB) |  
 | Sensitivity | 1 mV/DIV to 1 V/DIV (5 MHz, -3 dB), x5 gain selected 5 mV/DIV to 5 V/DIV | 1 mV/DIV to 1 V/DIV (10 MHz, -3 dB), x5 gain selected 5 mV/DIV to 5 V/DIV | 1 mV/DIV to 1 V/DIV (15 MHz, -3 dB), x5 gain selected 5 mV/DIV to 5 V/DIV |  
 | Attenuator | 1-2-5 sequence, 10 step with variable control |  
 | Input Impedance | 1 MΩ ±2%, 25 pF ± 10% |  
 | Max Input Voltage | 400 V (DC + AC peak) |  
 | Rise Time | About 17.5 ns | About 8.8 ns | About 5.8 ns |  
 | Overshoot | Less than 5% |  
 | Operation Mode | CH 1, CH2, DUAL (ALT, CHOP) |  
 | Algebraic Addition | CH 1 + CH 2, CH 1 - CH 2 |  
 | Inverter | CH 2 Only |  
 | Horizontal Deflection | 
|---|
 
 | X-Y Mode | Switch slectable using X-Y switch; CH 1: X axis, CH 2: Y axis |  
 | Accuracy | X Axis: ±6%, Y Axis: ±3% |  
 | Bandwidth | DC to 1 MHz (-3 dB) |  
 | X-Y Phase Difference | Approx. 3 degrees at 50 kHz |  
 | Sweep System | 
|---|
 
 | Sweep Display Mode | Main, Mix | Main, Mix, Delay | Main, Mix | Main, Mix, Delay | Main, Mix, Delay |  
 | Hold-Off Time | 5:1 continuously variable |  
 | Main Sweep | 
|---|
 
 | Sweep Speed | 0.1 ?s/DIV to 2.0 s/DIV in 1-2-5 sequence, 23 steps |  
 | Accuracy | ±3% |  
 | Variable Time Control | 5:1, uncalibrated, continuously variable between steps |  
 | Sweep Magnification | 10x, ±10%, extended sweep speed up to 10 ns/DIV |  
 | Delay Sweep | 
|---|
 
 | Sweep Speed | 0.1 ?s/DIV to 2.0 s/DIV in 1-2-5 sequence, 23 steps | 0.1 ?s/DIV to 2.0 s/DIV in 1-2-5 sequence, 23 steps |  
 | Accuracy | ±3% | ±3% |  
 | Sweep Magnification | 10x, ±10%, extended sweep speed up to 10 ns/DIV | 10x, ± 10%, extended sweep speed up to 10 ns/DIV |  
 | Delay Timeposition | Variable control to locate desirable waveform for extending | Variable control to locate desirable waveform for extending |  
 | Triggering | 
|---|
 
 | Trigger Coupling | AUTO, NORM TV-V, TV-H | AUTO, NORM TV-V, TV-H |  
 | Trigger Source | CH 1, CH 2, ALT, LINE, EXT | CH 1, CH 2, ALT, LINE, EXT |  
 | Slope | ± | ± |  
 | Trigger Sensitivity | 
|---|
 
 | Coupling | TV-V, TV-H, Auto, Nom |  
 | Bandwidth | DC to 1 kHz, 1 kHz to 100 kHz , 100 Hz to 20 MHz, 100 Hz to 20 MHz |  
 | Interior | 1.0 DIV, 1.5 DIV, 1.0 DIV, 0.5 Vp-p |  
 | Exterior | 0.5 Vp-p |  
 | Dimensions | 324 W x 398 D x 132 mm H (12.75 x 15.67 x 5.20") |  
 | Net Weight | Approx. 7.6 kg (16.75 lb) |  
 | Rated Range of Use | 10 to 35°C (50 to 95°F), 10 to 80% RH |  
 | Component Test | 
|---|
 
 | Test Voltage | Max 6 Vrms (open circuit) | Max 6 Vrms (open circuit) |  
 | Test Current | Max 11 mA (shorted) | Max 11 mA (shorted) |  
 | Test Frequency | Line frequency | Line frequency |  
 | Components | Capacitor, inductor, diode, transistor, zener, etc. | Capacitor, inductor, diode, transistor, zener, etc. |  
 | CH 2 Output | 
|---|
 
 | Output level | 100 mV (no load), 50 mV/DIV (with 50 Ω load) |  
 | Bandwidth | 20 Hz to 20 MHz | 20 Hz to 40 MHz | 20 Hz to 60 MHz |  
 | Graticule Illumination | Adjustable |  
 | Calibrator | Square wave about 1 kHz, 2 V p-p ±3% | Square wave about 1 kHz, 2V p-p ±3% |  
 | Z-Modulation | Positive TTL signal, low-level blank intensity at any intensity, high-level unblank any intensity | Positive TTL signal, low-level blank intensity at any intensity, high-level unblank any intensity |  
 | Trace Rotation | Adjustable on front panel				Adjustable on front panel |  
 | Power Source | 110 to 130V (800 mA fuse), 200 to 260V (600 mA fuse) 50/60 Hz selectable |  
 | Power Consumption | Approx. 38 W |  
 | Limits of Operation | 0 to 50°C (32 to 122°F), 10 to 80% RH |  
 | Storage Environment | -30 to 70°C (-22 to 158°F), 10 to 90% RH |  |
 |  |  |  |  |  |  |  | | † Price are shown in RMB. 
 Note: Comes with power cord, 110V fuse, 220V fuse, plastic screwdriver, 2 probes.
 
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