BK Precision 2120 20MHz Dual Trace Oscilloscope

The BK Precision 2120 is a dual-trace analog oscilloscope. It offers a bandwidth of 30 MHz and a sensitivity of 5 mV/div to 5 V/div. The instrument features AUTO/NORM triggered sweep operation with AC, TVH, TVV, and line coupling. It has a compact, low-profile design and is cUL certified. The BK Precision 2120 is built by B&K Precision, a company with over 50 years of experience in providing test instruments.

### Technical Specifications

**Vertical Amplifiers (CH 1 and CH 2)**

* **Sensitivity:**
* 5 mV/div to 5 V/div
* 1 mV/div to 1 V/div at X5 MAG
* **Attenuator:**
* 10 calibrated steps in a 1-2-5 sequence
* Vernier control provides full adjustment between steps
* **Accuracy:**
* ±3% (5 mV/div to 5 V/div)
* ±5% (at X5 MAG)
* **Input Resistance:** 1 MΩ ±2%
* **Input Capacitance:** 25 pF ±10 pF
* **Frequency Response:**
* 5 mV/div to 5 V/div: DC to 30 MHz (-3 dB)
* X5 MAG: DC to 10 MHz (-3 dB)
* **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: Algebraic 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 a 1-2-5 sequence, 23 steps
* Vernier control provides fully adjustable sweep time between steps
* **Accuracy:** ±3%
* **Sweep Magnification:** 10x (±10%)

**Triggering**

* **Triggering Modes:** AUTO (free run) or NORM, TV-V, TV-H
* **Trigger Source:** CH 1, CH 2, ALT, EXT, LINE
* **Maximum 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: Y-axis
* CH 2: X-axis
* **Sensitivity:** Same as vertical channel 2
* **Accuracy:**
* Y-Axis: ±3%
* X-Axis: +6%
* **Input Impedance:** Same as vertical channel 2
* **Frequency Response:** DC to 2 MHz typical (−3 dB) (to 6 divisions horizontal deflection)
* **X-Y Phase Difference:** Approximately 3° at 50 kHz

**Other Specifications**

* **Cal/Probe Compensation Voltage:** 2 V p-p ±3% square wave, 1 kHz nominal
* **CH 2 (Y) Output (Model 2125A):** Output Voltage: 50 mV/div (nominal into 50 ohm load)
* **Power Requirements:** 100/120/220/240 VAC ±10%, 50/60 Hz, approximately 40 W
* **Dimensions:** 132 x 324 x 398 mm (5.2″ x 12.8″ x 15.7″)
* **Weight:** 7.6 kg (16.8 lbs)
* **Environmental:**
* Within Specified Accuracy: +10° to +35° C, 10–80% relative humidity
* Full Operation: 0° to +50° C, 10–80% relative humidity
* Storage: −30° to +70° C, 10–90% relative humidity

**Supplied Accessories**

* Two Probes
* Schematic Diagram and Parts List
* AC Power Cord

Why Choose Aumictech for BK Precision 2120?
At Aumictech, we specialize in supplying high-performance test and measurement equipment. Whether you need reliable dual-trace oscilloscopes, precise signal analysis, or robust troubleshooting tools, our team ensures the BK Precision 2120 delivers maximum performance for your application.