Data Sheet
Technical data subject to change
© B&K Precision Corp. 2012
v013112
www.bkprecision.com
Tel.: 714.921.9095
B&K Precision's model 2125A is a dual trace oscilloscope
with a delayed sweep 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 2125A
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.
■ Delayed sweep in 23 steps
■ Built in component tester for capacitors, inductors,
diodes, transistors, zener diodes
■ 23 step time base to 0.1ms/div
■ Deluxe handle/tilt stand
■ cUL certified
30 MHz Delay Trace Analog Oscilloscope With Probes
Model 2125A
Specifications 2125A
V
ERTICAL AMPLIFIERS (CH 1 and CH 2)
S
ensitivity
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
A
ccuracy
±
3%, ±5% at x5
Input Resistance 1 MΩ +2%
Input Capacitance 25 pF ±10pF
Frequency Response 5 mV to 5 V/div: DC to 30 MHz (-3dB), X5: DC to 10 MHz (-3dB)
Rise Time 12ns (Overshoot ≤5%)
Operating Modes CH 1: CH 1, single trace
CH 2 CH 2, single trace
A
LT
d
ual trace, alternating
C
HOP
d
ual trace, chopped
A
DD
a
gebraic sum of CH 1 + CH 2
P
olarity Reversal
C
H 2 only
M
ax. Input Voltage
4
00 V (DC to AC peak)
SWEEP SYSTEM
Operating Modes
M
ain, mix (both main sweep and delay sweep displayed),
or Delay (only delay sweep displayed), X-Y
M
ain Sweep SpeeD
0
.1 µs/div to 2.0 s/div in 1-2-5 sequence,
2
3 steps Vernier control provides fully adjustable sweep time between steps
A
ccuracy
±
3%
Sweep Magnification 10X, ±5%
Delayed Sweep Speed 0.1 ms/div to 0.1s/div in 1-2-5 sequence, 23 steps
H
oldoff
C
ontinuously variable for Main sweep up to 10 times normal
D
elay Time Position
C
ontinuously 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 Maximum External 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: ≥0.1Vp-p
Norm Bandwidth: 100Hz - 40MHz, Internal: 1.5 div. External: ≥0.1Vp-p
TV-V Bandwidth: DC -1kHz, Internal: 0.5 div, External: ≥0.05Vp-p
TV-H 1 kHz - 100kHz, Internal: 0.5 div, External: ≥0.05Vp-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 ame 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
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), ≤85% RH
Full Operation: 32˚ to 104˚ F (0˚ to 40˚C), ≤85% RH
Storage: -4˚ to 158˚ F (-20˚ to +70˚C)
Power Requirements
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 Approximately 17.2 lbs (7.8 kg)
Three Year Warranty
Supplied Accessoriesa Instruction Manual, Two PR-33A x1/x10 Probes or equivalent, AC Power Cord, 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
