EDUCATIONAL TRAINING SYSTEMS

Model: LE- LE7340

40MHz CATHODE RAY OSCILLOSCOPE

 

CRO 40

FEATURES:

  • 40MHz Dual Channels
  • . CRT with Bright high accelerated pole voltage This oscilloscope tube is of fast speed and high light. Votlage of accelerated pole up to 2kv, able to Indicate clear traceseven under High-speed sweep
  • Two waveforms in different frequency can be observed via alternative trigger function
  • . TV signal synchronous function
  • . Z-axis input Function of bright adjustable can add frequency or time marker to oscilloscope, trace of positive signal blanking, TTLmatching
  • X-Y operation This item can be used as an X-Y oscilloscope while setting in X-Y position, CH1 is horizontal axial and CH2 is vertical axial

Vertical System :

  • Sensitivity 5mV~5V/div, 10 steps in 1-2-5 sequence
  • Sensitivity Accuracy -≤3%(*5 MAG: ≤5%)
  • Vernier vertical Sensitivity To 1/2.5 or less of panel-indicated value
  • Frequency Bandwidth DC~40MHz(*5 MAG: DC~15MHz)
  • AC Coupling:
  • Rise Time Approx: 9.5ns(*5 MAG: 25ns)
  • Input Impedance Approx: 1MΩ/25pF
  • Square wave Overshoot: ≤5%(At 10mV/div range)
  • DC Balance Shift 5mV~5V/div: ± 0.5DIV, 1mV~2Mv/DIV ± 2.0DIV
  • DC Balance Shift 5mV~5V/div: ± 0.5DIV, 1mV~2Mv/DIV ± 2.0DIV
  • Linearity <± 0.1DIV of amplitude change when waveform of 2DIV at graticule center is moved vertically.
  • Vertical system: CH1: Channel 1
  • CH2: Channel2 DUAL: Channel 1 and Channel 2
  • ADD: Addition of Channel 1 and Channel 2
  • Chopping repetition Frequency Approx...250KHz
  • Input Coupling AC, GND, DC
  • Max Input Voltage 300Vp-p
  • CMRR >50: 1(@50KHz sine wave)Isolation between channels(At 5mv/DIV range) >1000: 1 at 50kHz; >30: 1 at 40MHz

Triggering

  • Triggering Soure CH1, CH2, LINE, EXT
  • Coupling AC: 20MHz~40MHz: 1.5DIV

Horizontal System

  • Sweep time 0.2uSec0.5Sec/DIV, 20 steps in 1-2-5 sepuence
  • Vernier sweep time control ≤1/2.5 of panel-indicated valueSweep
  • magnification 10 times*10MAG
  • Sweep tine accuracy ± 5%, (20nSec~50nSec are uncalibrated)
  • Linearity ± 3%, *10MAG: ± 5%(20ns and 50ns are uncalibrated)
  • Trigger signal Input Impedance Max Input Voltage: Approx 1MΩ/25pF
  • 300V(DC+AC peak)AC not exceed 1KHz

X-Y Mode

  • BandwidthDC~500KHzX-Y Phase difference=3(within DC50kHz)
  • Sensibility Same as Vertical axis

Calibration Signal

  • Waveform Square wave
  • Frequency Approx 1KHz
  • Duty Ratio
  • Output voltage2Vp-p± 2%
  • Output impedanceApprox 1kΩ

CRT

  • Type 6in, Rectangle, Inside graduaton
  • Phosphor P31
  • Acceleration Voltage Approx 2kV 200MHz
  • Effective Screen Size 8*10DIV(1 DIV=10mm(0.39in))
  • Voltage : Fixed AC220V± 10% or 110/220V± 10% selectable
  • Size : 310*150*455(mm)
  • Weight: Approx. : 8Kg

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