Data Sheet
30 MHz Dual Trace Analog Oscilloscope With Probes
Model 2120B
B&K Precision's model 2120B 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 models 2120B has a bandwidth of 30 MHz. This oscilloscope is built by and backed by B&K Precision, a company that has been selling reliable, durable, value priced test instruments for over 50 years.
■Dual or single trace operation
■5 mV/div sensitivity
■AUTO/NORM triggered sweep operation with AC, TVH, TVV and line coupling
■Compact low profile design
■cUL certified
Specifications |
2120B |
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VERTICAL AMPLIFIERS (CH 1 and |
CH 2) |
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Sensitivity |
5 mV/div to 5 V/div, 1 mV/div to 1 V/div at X5 |
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Attenuator |
10 steps in 1-2-5 sequence. Vernier control provides full adjustment between steps |
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Accuracy |
±3%, ±5% at X5 |
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Input Resistance |
1 MΩ ±2% |
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Input Capacitance |
25 pF ±10pF |
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Frequency Response |
5 mV to 5 V/div: DC to 30 MHz (-3dB). X5: DC to 10 MHz (-3dB) |
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Rise Time |
12 ns (Overshoot ≤5%) |
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Operating Modes |
CH 1: CH 1, single trace |
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CH 2 |
CH 2, single trace |
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ALT |
dual trace, alternating |
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CHOP |
dual trace, chopped |
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ADD |
agebraic sum of CH 1 + CH 2 |
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Polarity Reversal |
CH 2 only |
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Maximum Input Voltage |
400 V (DC + AC peak) |
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SWEEP SYSTEM |
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Sweep Speed |
0.1 µs/div to 2 s/div in 1-2-5 sequence, 23 steps, |
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Vernier control provides fully adjustable sweep time between steps. |
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Accuracy |
±3% |
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Sweep Magnification |
10x |
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TRIGGERING |
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Triggering Modes |
AUTO (free run) or NORM, TV-V, TV-H |
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Trigger Source |
CH 1, CH 2, ALT, EXT, LINE |
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Maximum External Trigger Voltage |
300 V (DC + AC peak) |
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Trigger Coupling |
AC 30 Hz to 30 MHz |
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TV H |
Used for triggering from horizontal sync pulses |
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TV V |
Used for triggering from vertical sync pulses |
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TRIGGER SENSITIVITY |
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Auto |
Bandwidth:100 Hz-30 MHz, Internal: 1.5 div, External: 100 mV |
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Norm |
Bandwidth: DC to 30 MHz, Internal: 1.5 div, External: 100 mV |
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TV V |
Bandwidth: 20 Hz-1 kHz, Internal: .5 div, External: 100 mV |
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TV H |
Bandwidth:1 kHz-100 kHz, Internal: .5 div, External: 100 mV |
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HORIZONTAL AMPLIFIER (Input |
through channel 2 input) |
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X-Y Mode |
Switch selectable using X-Y switch. CH 1: X axis, CH 2: Y axis |
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Sensitivity |
Same as vertical channel 1 |
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Input Impedance |
Same as vertical channel 1 |
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Frequency Response |
DC to 1 MHz typical (-3 dB) |
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X-Y Phase Difference |
Approximately 3˚ at 50 kHz |
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Maximum Input Voltage |
Same as vertical channel 1 |
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CRT |
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Type |
Rectangular with internal graticule |
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Display Area |
8 x 10 div (1 div = 1 cm) |
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Accelerating Voltage |
2 kV |
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Phosphor |
P31 |
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Trace Rotation |
Electrical, front panel adjustable |
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Calibrating Voltage |
1 kHz (±10%) Positive Square Wave, 2 V p-p (±3%) |
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GENERAL |
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Within Specified Accuracy: 50˚ to 95˚F (10˚ to 35˚C), ≤85% RH |
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Temperature |
Full Operation: 32˚ to 104˚F (0˚ to 40˚C), ≤85% RH |
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Storage: -4˚ to 158˚F ( -20˚ to +70˚C |
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Power Requirements |
100/120/220/240 VAC ±10%, 50/60 Hz, approximately 40 W. |
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Dimensions (WxHxD) |
7 x 14.5 x 17.25" (180 x 370 x 440 mm) |
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Weight |
Approximately 17.2 lbs (7.8 kg) |
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Two Year Warranty |
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Supplies Accessories |
Instruction Manual, Two PR-33A x1/x10 Probes or equivalent, |
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AC Power Cord, Spare Fuse |
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Optional Accessories |
PR-32A Demodulator Probe, PR-37A x1/x10/REF. Probe, PR-100A x100 Probe, |
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PR-55 High Voltage x1000 Probe, LC-210A Carrying Case |
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Technical data subject to change |
www.bkprecision.com |
© B&K Precision Corp. 2012 |
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v013012 |
Tel.: 714.921.9095 |
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