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BK 2121 Analog Oscilloscope with Frequency Counter 30MHz
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BK 2121 Analog Oscilloscope with Frequency Counter 30MHz


BK 2121
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 BK 2121

Features:
  • 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


  Description

B+K Precision's model 2121 is a dual trace oscilloscope with a built in 50MHz Frequency Counter 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 2121 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.


  Models, Options, & Accessories


Model Description List Price Sale Price
2121 30MHz Analog Oscilloscope with Frequency Counter
$599.00 
Model Accessories List Price Sale Price
LC 210A Oscilloscope and Spectrum Analyzer Carrying Case
$95.68 
PR 37AR PR 37AR Deluxe 10:1 Red Probe
$47.84 
PR 100A PR100A x100 Probe f/All Scopes
$64.00 
PR 32A RF Detect/Demodular Probe
$61.36 
PR 37AG PR 37AG Deluxe 10:1 Gray Probe
$47.84 
PR-55 High-Voltage Oscope Probe, 10kV, 50MHz
$329.00 


  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
Attenuator 10 steps in 1-2-5 sequence. Vernier control provides full adjustment between steps
Accuracy +-3%, +-5% at X5
Input Resistance 1 M +- 2%
Input Capacitance 25 pF +- 10pF
Frequency Response 5 mV to 5 V/div: DC to 30 MHz (-3 dB). X5: 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 us/div to 2s/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
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
TRIGGER SENSITIVITY
Coupling Bandwidth Int Ext
Auto 100 Hz - 30 MHz 1.5 div. 100 mV
Norm DC to 30 MHz 1.5 div 100 mV
TV V 20 Hz-1 kHz 5 div 100 mV
TV H 1 kHz-100 kHz .5 div 100 mV
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 Same as vertical channel 1
CRT
Type Rectangular with internal graticule
Display Area 8x10 div (1 div = 1 cm)
Accelerating Voltage 2 kV
Phosphor P31
Trace Rotation Electrical, front panel adjustable
Display Resolution Auto select from 0.001Hz to 1KHz depending on the frequency
Max Counter Range 0.1Hz to 50MHz
Max External Voltage 300V dc + ac peak
Accuracy +0.01% + 1 digit or 1/99999 + 1 digit
Time Base 18,432MHz + 10ppm (230 C +/- 50 C)
Sensitivity Electrical, front panel adjustable
Sensitivity INT 2Hz ~ 40MHz >= 1 Div
1Hz ~ 45MHz >= 2 Div
0.2Hz ~ 50MHz >= 3 Div
Sensitivity EXT 10Hz ~ 50MHz >= 200m Vrms
1Hz ~ 50MHz >= 400m Vrms
Other Specifications
Calibrating Voltage 1 kHz (+-10%) Positive Square Wave, 2 V p-p (+-3%)
ENVIRONMENT
Within Specified Accuracy 50 0 to 95 0 F (10 0 to 35 0 C), <= 85% RH
Full Operation 32 0 to 104 0 F (0 0 to 40 0 C), <=85% RH
Storage -4 0 to 158 0 F (-20 0 to +70 0 C)
Power Requirements 100/120/220/240 VAC +- 10%, 50/60 Hz, approximately 40 W
Dimensions (WxHxD) 7x14.5x17.25" (180 x 370 x 440 mm)
Weight Approximately 17.2 lbs. (7.8 kg)


   
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