Analog Oscilloscopes With Probes
2100C Series
Data Sheet
www.bkprecision.com
Technical data subject to change
© B&K Precision Corp. 2019
B&K Precision's 212x Series are dual trace
oscilloscopes that offers high performance at a
low price. Most competitor's entry level
oscilloscopes have a 20 MHz bandwidth, while
B&K Precision's 212x Series have a bandwidth of
30-60 MHz.
These oscilloscopes are built by and backed by
B&K Precision, a company that has been selling
reliable, durable, value priced test instruments
for over 60 years.
Common Features & Benefits
■Dual or single trace operation
■5 mV/div sensitivity
■Calibrated 23-step time base with X10
magnifier
■Video sync trigger
■Alternate/chop sweep
■Sum and difference capability
Additional Features
■Built-in component tester (2125C & 2160C)
■Built-in 50 MHz frequency counter
(2121C only)
■Delayed time base
■Main, Mix, Delay, X-Y sweep modes
Specifications 2120C 2121C 2125C 2160C
Bandwidth 30 MHz 30 MHz 30 MHz 60 MHz
Sweep Time 0.1 µs/div to 2 s/div 20 ns/div to 5 s/div
Component Tester - - √ √
Counter - √- -
v040519
2 www.bkprecision.com
Analog Oscilloscopes
2100C Series
Specifications 2120C & 2121C
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 Impedance 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 algebraic sum of CH 1 + CH 2
Polarity Reversal CH 2 only
Max. 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 ±10%
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
TRIGGER SENSITIVITY
Auto Bandwidth:100 Hz-30 MHz, Internal: 1.5 div, External: ≥0.5Vp-p
Norm Bandwidth: DC to 30 MHz, Internal: 1.5 div, External: ≥0.5Vp-p
TV V Bandwidth: 20 Hz-1 kHz, Internal: 1.0 div, External: ≥0.5Vp-p
TV H Bandwidth:1 kHz-100 kHz, Internal: 1.0 div, External: ≥0.5Vp-p
HORIZONTAL AMPLIFIER (Input through channel 1 input)
X-Y Mode Switch selectable using X-Y switch. CH 1: X axis, CH 2: Y axis
Sensitivity Same as vertical channel 2
Input Impedance Same as vertical channel 2
Frequency Response DC to 1 MHz typical (-3 dB)
X-Y Phase Difference Approximately 3˚ at 50 kHz
Maximum Input Voltage Same as vertical channel 2
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%)
COUNTER (2121C)
Display 5 digits, 0.36” red LED, display at “Hz” or “kHz” auto range
Display Resolution Auto select from 0.001 Hz to 1 kHz depending on the frequency
Max. Counter Range 0.1 Hz to 50 MHz
Accuracy +0.01% + 1 digit or 1/99999 + 1 digit
Time Base 18,432 MHz + 10ppm (23 ºC ±5 ºC)
GENERAL
Temperature
Within specified accuracy:
50˚ to 95˚F (10˚ to 35˚C), 10-80% RH
Full operation: 32˚ to 122˚ F (0˚ to 50˚C), 10-80% RH
Storage: -22˚ to 158˚ F (-30˚ to +70˚C), 10-90% RH
AC Input 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)
Weight 16.8 lbs (7.6 kg)
One Year Warranty
Supplied Accessories Instruction manual, two PR-33A X1/X10 probes or equivalent,
AC power cord and spare fuse
Optional Accessories
PR-32A demodulator probe, PR-37A x1/x10/REF. probe,
PR-100A x100 probe, PR-55 high voltage x1000 probe,
LC-210A carrying case
Specifications 2125C & 2160C
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 Impedance 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)
DC to 60 MHz (-3 dB). Model 2160C
X5 MAG: DC to 15 MHz (-3 dB). Model 2160C
Rise Time 12ns (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
Max. Input Voltage 400 V (DC to AC peak)
SWEEP SYSTEM
Operating Modes Main, mix (both main sweep and delay sweep displayed),
or Delay (only delay sweep displayed), X-Y
Main Sweep Speed 0.1 µs/div to 2.0 s/div in 1-2-5 sequence,
23 steps Vernier control provides fully adjustable sweep time between steps
Accuracy ±3%
Sweep Magnification 10X ±5%
Delayed Sweep Speed 0.1 ms/div to 0.1s/div in 1-2-5 sequence, 23 steps
Holdoff Continuously variable for Main sweep up to 10 times normal
Delay Time Position Continuously variable to control percentage of display that is
devoted to main and delay sweep
TRIGGERING
Triggering Modes AUTO (free run) or NORM, TV-V, TV-H
Trigger Source CH 1, CH 2, ALT, EXT, LINE
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
TRIGGER SENSITIVITY
Auto Bandwidth: 100Hz - 40MHz, Internal: 1.5 div, External: ≥0.5Vp-p
Norm Bandwidth: 100Hz - 40MHz, Internal: 1.5 div. External: ≥0.5Vp-p
TV-V Bandwidth: DC -1kHz, Internal: 1.0 div, External: ≥0.5Vp-p
TV-H 1 kHz - 100kHz, Internal: 1.0 div, External: ≥0.5Vp-p
HORIZONTAL AMPLIFIER (Input through channel 1 input)
X-Y Mode Switch selectable using X-Y switch. CH 1: X axis, CH 2: Y 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 1MHz typical (-3 dB), to 6 div horizontal deflection
X-Y Phase Difference 3˚ or less at 50 kHz
Max. Input Voltage Same as vertical channel 2
CRT
Type Rectangular with internal graticule
Display Area 8 x 10 div (1 div = 1 cm)
Accelerating Voltage 2 kV, 12 kV (2160C)
Phosphor P31
Trace Rotation Electrical, front panel adjustable
COMPONENT TESTER
Components Tested Resistors, Capacitors, Inductors, and Semiconductors
Test Voltage 6 V rms maximum (open)
Test Current 11 mA maximim (shorted)
Test Frequency Line frequency (60 Hz in USA)
Calibrating Voltage 1 kHz (±10%) positive square wave, 0.2 V p-p (±2%)
GENERAL
Temperature
Within specified accuracy:
50˚ to 95˚F (10˚ to 35˚C), 10-80% RH
Full operation: 32˚ to 122˚ F (0˚ to 50˚C), 10-80% RH
Storage: -22˚ to 158˚ F (-30˚ to +70˚C), 10-90% RH
AC Input 100/120/220/240 VAC ±10%, 50/60 Hz, Approximately 40 W
Dimensions (WxHxD) 7 x 14 .5 x 14.25" (180 x 370 x 440 mm)
Weight 16.8 lbs (7.6 kg)
One Year Warranty
Supplied Accessories Instruction manual, two PR-33A X1/X10 probes or equivalent,
AC power cord and spare Fuse
Optional Accessories PR-32A demodulator probe, PR-37A x1/x10/REF. probe, PR-100A x100 probe,
PR-55 high voltage x1000 probe, LC-210A carrying case
