Pintek PS-251 模拟示波器（25MHz带元件测试，2通道）

25MHz, ALT Trigger.
1mV sensitivity.
10ns Resolution.
Component test, Beam-finder
Illuminate, Hold-off, X-Y 

Type: Rectangular with integral grateful.
Display Area: 8 x 10 div (1 div= 1 cm)
Accelerating Voltage: 2.1 kV.
Phosphor: P31
Vertical amplifiers (CH 1 and CH 2)
Sensitivity: 5 mV/div to 5V/div (X1 mode). 
                      1 mV/div to 1V/div (X5 mode).
                      1-2-5 sequence, 10 step attenuator.
                      Vernier control provides full adjustable
                       attenuation between steps.
Accuracy: ±3% (X1 mode). ±5% (X5 mode).
Input Resistance: 1 M±2%
Input Capacitance: 25 pF//10pF.
Frequency Response: 5 mV to 5 V/div (CAL): DC 
                                         to 25 MHz (-3 dB) 1 mV/div 
                                         (CAL): DC to 10 MHz (-3 dB)
Rise Time: Approximately 14.0ns.
Operating Modes: CH1 : CH 1, single trace. CH2 : CH 2,
                                  single trace. ALT : dual trace, alternating.
                                  CHOP : dual trace, chopped. ADD :
                                  algebraic sum of CH 1 + CH 2
Polarity Reversal (Invert): CH 2 only.
Maximum Input Voltage: 400 V dv + ac peak
Maximum Undistorted Amplitude: DC-to-25 MHz : 4 divisions. 
                                                                DC-to-15 MHz : 8 divisions.
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: 1mv/div to 5v/div
Accuracy: Y-Axis : ±3% ±X-Axis : ±6%
Input Impedance: 1M//25PF
Frequency Response: DC to 1 MHz typical (-3 dB)
X-Y Phase Difference: Approximately 3o at 50 kHz.
Maximum input Voltage: 400Vdc+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, ±6% (0.1 μs and 0.2 μs ranges
                                         uncaliubrated when X10 is engaged).
Holdoff: Continuously adjustable from NORM to 5 times normal.
TRIGGERING
Trigger Source: CH 1, CH 2, ALT, EXT, LINE.
Maximum External Trigger Voltage: 300V 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: Internal : 0.5 division (1 division with TV
                                     Coupling) External : 500 mV
OTHER SPECIFICATIONS
COMPONENT TEST:
Test Voltage: Max. 6 Vrms (open circuit).
Test Current: Max. 11 mA(shorted).
Test Frequency: Line Frequency
Components : Capacitor, Inductor, Diode, Transistor, Zener etc.
BEAM FINDER: Trace can be return to CRT center area when 
                               press beam finder button.
GRATICULE ILLUMINATION: Adjustable
Calibration Voltage: 1 kHz (nominal) Positive 
                                      Square Wave, 2.0 V p-p (±3%)
Trace Rotation: Electrical, front panel adjustable.
Power Requirements: 115/230 VAC ±10%, 50/60Hz
Dimensions: 324 x 132 x 398 mm (12.8 x 5.2 x 15.6").
Weight: Approximately 7.6kg (16.75bs).