BK Precision 2125A 20MHz Dual Trace Oscilloscope

The BK Precision 2125A is a dual-trace analog oscilloscope designed for general-purpose measurement and analysis in various technical environments. It offers a 30 MHz bandwidth and a delayed sweep function, providing enhanced waveform observation capabilities for engineers, system integrators, and laboratory professionals.

### Technical Specifications

**Oscilloscope Features:**
* **Bandwidth:** DC to 30 MHz (−3 dB) for full sensitivity ranges; DC to 10 MHz (−3 dB) at x5 MAG.
* **Rise Time:** 12 ns (typical); 35 ns at x5 MAG.
* **Overshoot:** Less than 5%.
* **Dual Trace:** Capable of displaying two waveforms simultaneously with selectable single trace (CH 1 or CH 2) or dual trace.
* **Sweep Modes:** Alternate or chop sweep selectable at all sweep rates. Sum and difference capability (CH 1 + CH 2) for algebraic addition or subtraction of waveforms.
* **Sensitivity:** 5 mV/div to 5 V/div for full bandwidth; 1 mV/div to 1 V/div at x5 MAG.
* **Attenuator:** 10 calibrated steps in a 1-2-5 sequence. A vernier control provides fully adjustable sensitivity between calibrated ranges, with a range of 1/1 to at least 1/3.
* **Accuracy (Vertical):** ±3% for 5 mV to 5 V/div; ±5% at x5 MAG.
* **Input Impedance (Vertical):** 1 MΩ ±2%.
* **Input Capacitance (Vertical):** 25 pF ±10 pF. For model 2125A, a separate source mentions 40 pF ±5 pF.
* **Maximum Input Voltage (Vertical):** 400 V (DC + AC peak).

**Sweep Features:**
* **Main Time Base:** 0.1 µS/div to 2.0 S/div in 1-2-5 sequence, 23 calibrated steps. A vernier control provides fully adjustable sweep time between steps.
* **Delayed Time Base (Model 2125A only):** 0.1 µS/div to 2.0 S/div in 1-2-5 sequence, 23 calibrated steps.
* **Sweep Magnification:** x10 ±10%. For model 2125A, x10 ±5% is stated, with uncalibrated sweep speeds at 0.1 µs and 0.2 µs/div when x10 mag is selected.
* **Holdoff:** Continuously adjustable for the main time base from NORM to 5 times normal.
* **Delay Time Position:** Control adjusts the percentage of display devoted to main and delayed sweep.
* **Accuracy (Time Base):** ±3%, except ±6% on 0.2 S/div and ±20% on 0.1 µS/div.

**Triggering Features:**
* **Trigger Modes:** AUTO (free run), NORM, TV-V (video vertical sync pulses, high frequency reject), TV-H (video horizontal sync pulses, low frequency reject).
* **Trigger Source:** CH 1, CH 2, ALT, EXT, LINE.
* **Trigger Coupling:** AC (30 Hz to 30 MHz), HF/TV-H, DC/LF/TV-V.
* **Trigger Sensitivity:** Internal: 1.5 div (typical); External: ≥0.5 Vp-p. For model 2125A, internal is 0.5 div and external is 500 mV.
* **Maximum External Trigger Voltage:** 300 V (DC + AC peak). For model 2125A, it’s 200 V dc + ac peak.

**Component Tester:**
* **Components Tested:** Resistors, capacitors, inductors, and semiconductors.
* **Test Voltage:** 6 V rms maximum (open). For model 2125A, it’s 12 V rms maximum (open).
* **Test Current:** 11 mA maximum (shorted). For model 2125A, it’s 30 mA maximum (shorted).
* **Test Frequency:** Line frequency (60 Hz in USA).

**CRT Display:**
* **Type:** Rectangular CRT with a large 8 x 10 cm viewing area.
* **Graticule:** Internal graticule.
* **Illumination:** Variable scale illumination on Model 2125A.
* **Trace Rotation:** Electrically adjustable from the front panel.

**Power Requirements:**
* 100–130 VAC or 200–260 VAC, 50/60 Hz, 38 watts.

**Physical Dimensions and Weight:**
* **Dimensions (H x W x D):** 5.2″ x 12.8″ x 15.7″ (132 mm x 324 mm x 398 mm).
* **Weight:** 16.8 lbs (7.6 kg).

**Environmental Conditions:**
* **Operating Temperature:** +10°C to +35°C at 10–80% relative humidity for specified accuracy. Full operating range is 0°C to +40°C at 80% maximum relative humidity.
* **Storage Temperature:** −30°C to +70°C at 10–90% relative humidity.

### Why Choose Aumictech for BK Precision 2125A?
At Aumictech, we specialize in supplying high-end electronic test equipment. Whether you need reliable oscilloscopes for detailed waveform analysis, versatile instruments for component testing, or precise tools for precise measurements, our team ensures the BK Precision 2125A delivers maximum performance for your application.