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Model 2120B - 2125A
  30 MHz Analog Oscilloscopes

Analog -  30MHz W/ 50MHz Frequency Counter | 30 MHz | 40 MHz | 60 MHz | 100 MHz

Digital - 20 MHz Analog/Digital | Selection Guide |
Specifications model
  2125A
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 5V/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
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 us/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 0.1 s/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
Maximum External Trigger Voltage 300 V (DC + AC peak)
Trigger Coupling AC 30 Hz to 30 MHz
  TV H Used for triggering from horizontal syns pulses
  TV H Used for triggering from vertical syns pulses
TRIGGER SENSITIVITY
Coupling Bandwidth Int Ext
Auto 100Hz - 40MHz 1.5 div. >=0.1Vp-p
Norm 100 Hz - 40 MHz 1.5 div. >=0.1Vp-p
TV-V DC - 1kHz 0.5 div >= 0.05Vp-p
TV-H 1 kHz - 100 kHz 0.5 div >= 0.05 Vp-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 1 MHz typical (-3 dB), to 6 div horizontal deflection
X-Y Phase Difference 3 0 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 6V rms maximum (open)
Test Current 11 mA maximum (shorted)
Test Frequency Line Frequency (60Hz in USA)
Calibrating Voltage 1 kHz (+-10%) Positive Square Wave, 0.2 V p-p (+-2%)
Other Specifications
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 Approximately 40 W
All other operating specifications are the same as model 2120A
Dimensions (WxHxD) 7x14.5x14.25'' (180x370x440 mm)
Weight Approximately 17.2 lbs. (7.8 kg)
Three Year Warranty
Accessories
SUPPLIED: Instruction Manual, Two PR-33A x1/x10 Probes or equivalent, AC Power Cord, Spare Fuse
OPTIONAL: PR-32A Demodulator Probe, PR-37A x1/x10/REE Probe, LC-210A Carrying Case
Specifications model
  2120B
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
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)
Two Year Warranty
Accessories
SUPPLIED: Instruction Manual, Two PR-33A x1/x10 Probes or equivalent, AC Power Cord, Spare Fuse
OPTIONAL: PR-32A Demodulator Probe, PR-37A x1/x10/REE Probe, PR-100A x 100 Probe, PR-55 High Voltage x1000 Probe, LC-210A Carrying Case