BK Precision 2120C
30 MHz Dual Trace Analog Oscilloscope with Probes
The B&K Precision 2120C is a dual trace oscilloscope that offers high performance at a low price. Most competitor's entry level oscilloscopes have a 20 MHz bandwidth, while B&K Precision's 2120C has a bandwidth of 30 MHz. The B&K Precision 2120C oscilloscope is built by and backed by B&K Precision, a company that has been selling reliable, durable, value priced test instruments for over 60 years.
- Dual or single trace operation
- Calibrated 23-step time base with X10 magnifier
- AUTO/NORM triggered sweep operation with AC, TVH, TVV and line coupling
- Video sync trigger
- Alternate/chop sweep
- Delayed time base
- Main, Mix,
- 5 mV/div sensitivity
- Delay, X-Y sweep modes
- Sum and difference capability
- Compact low profile design
- cUL certified
| Specifications | |
| Bandwidth | 30 MHz |
| Sweep Time | 0.1 μs/div to 2 s/div |
| Vertical Amplifiers (CH 1 and CH 2) | |
| Sensitivity | 5 mV/div to 5 V/div, 1 mV/div to 1 V/div at X5 |
| Attenuator | 10 steps in 1-2-5 sequence. Vernier control provides full adjustment between steps |
| Accuracy | ±3%, ±5% at X5 |
| Input Resistance | 1 MΩ ±2% |
| Input Capacitance | 25 pF ±10 pF |
| Frequency Response | 5 mV to 5 V/div: DC to 30 MHz (-3dB). X5: DC to 10 MHz (-3dB) |
| Rise Time | 12 ns (Overshoot ≤5%) |
| Operating Modes | CH 1: CH 1, single trace |
| CH 2 | CH 2, single trace |
| ALT | dual trace, alternating |
| CHOP | dual trace, chopped |
| ADD | agebraic sum of CH 1 + CH 2 |
| Polarity Reversal | CH 2 only |
| Maximum Input Voltage | 400 V (DC + AC peak) |
| Sweep System | |
| Sweep Speed | 0.1 μs/div to 2 s/div in 1-2-5 sequence, 23 steps, Vernier control provides fully adjustable sweep time between steps. |
| Accuracy | ±3% |
| Sweep Magnification | 10x |
| Triggering | |
| Triggering Modes | AUTO (free run) or NORM, TV-V, TV-H |
| Trigger Source | CH 1, CH 2, ALT, EXT, LINE |
| Max External Trigger Voltage | 300 V (DC + AC peak) |
| Trigger Coupling | AC 30 Hz to 30 MHz |
| TV H | Used for triggering from horizontal sync pulses |
| TV V | Used for triggering from vertical sync pulses |
| Horizontal Amplifier (Input through channel 2 input) | |
| X-Y Mode | Switch selectable using X-Y switch. CH 1: X axis, CH 2: Y axis |
| Sensitivity | Same as vertical channel 1 |
| Input Impedance | Same as vertical channel 1 |
| Frequency Response | DC to 1 MHz typical (-3 dB) |
| X-Y Phase Difference | Approximately 3° at 50 kHz |
| Maximum Input Voltage | 1 kHz (±10%) positive square wave, 2 V p-p (±3%) |
| CRT | |
| Type | Rectangular with internal graticule |
| Display Area | 8 x 10 div (1 div = 1 cm) |
| Accelerating Voltage | 2 kV |
| Phosphor | P31 |
| Trace Rotation | Electrical, front panel adjustable |
| Calibrating Voltage | 1 kHz (±10%) positive square wave, 2 V p-p (±3%) |
| General Specifications | |
| Temperature | Within Specified Accuracy: 50° to 95°F (10° to 35°C), ≤85% RH |
| Full Operation: 32° to 104°F (0° to 40°C), ≤85% RH | |
| Storage: -4° to 158°F (-20° to +70°C) | |
| Power Requirements | 100/120/220/240 VAC ±10%, 50/60 Hz, approximately 40 W. |
| Dimensions (WxHxD) | 7 x 14.5 x 17.25" (180 x 370 x 440 mm) |