20MHz DUAL TRACE OSCILLOSCOPE   Model 3305S

Features
Model 3305S
  • DC - 20MHz Bandwidth
  • 1mV/div Sensitivity on Both Channels
  • CH1, CH2 (Independent Channels), CH1 & CH2 (Alternate / CHOP), CH2 INVT, ADD and SUBTRACT
  • X-Y Operation
  • 40ns/div to 0.2s/div Time Base
  • 140mm Rectangular CRT with Internal Graticule
  • Triggering to 40MHz
  • Z Modulation (TTL Level)
  • 8 x 10 cm Display
  • TV Triggering Frame (V) & Line (H)
  • Line Trigger
  • Component Tester
Technical Specifications
VERTICAL DEFLECTION
Deflection Coefficient (CH1 & CH2) 1mV/div to 20V/div. 5mV/div to 20V/div in 12 calibrated steps in 1-2-5 sequence.
x5 magnification increases sensitivity to 1mV/div and 2mV/div (LED indication).
Accuracy 3%.
Bandwidth DC - 20MHz (-3dB), dc coupled.
10Hz - 20MHz (-3dB), ac coupled.
DC - 28MHz (-6dB).
Rise Time 17.5nsec or less.
Display Modes CH1, CH2, CH1 & CH2 Alternate or Chop mode & X-Y, CH1-Y, CH2-X, Algebraic ADD and SUBTRACT with CH2-INVT.
Input Impedance 1M ohms & 25pF (approx).
Maximum Input Voltage 500 Volts (dc + peak ac).
Internal Trigger Signal CH1 or CH2.
TIME BASE
Sweep Speed 18 calibrated steps. 0.5S/div to 0.2S/div in 1, 2 & 5 sequence.
Sweep Magnifier x5 Magnification extends the sweep speed to 100nS/div. x5 Magnification indication with LED.
Accuracy 3%.
Variable Uncalibrated continuously variable control between steps, extends fastest sweep speed to 40nS/div (approx). (Uncal LED indication).
TRIGGER SYSTEM
Triggering Mode Automatic or Normal with Level Control.
Source CH1 / CH2 / LINE / EXT.
Slope Positive or Negative.
Coupling ac / dc / HF reject or TV Frame / TV Line.
Trigger Sensitivity  
Internal AUTO 0.5 div 30Hz - 20MHz
NORM 0.5 div 3Hz - 20MHz.
External AUTO 0.8V p-p 30Hz - 20MHz
NORM 0.8V p-p 3Hz - 20MHz.
(Typical 40MHz).
HORIZONTAL DEFLECTION
Deflection Coefficient Same as CH2.
Bandwidth DC - 2.5MHz (-3dB).
Phase shift <3 deg. at 60KHz.
Input Impedance 1M ohms and 25pF (approx.).
COMPONENT TESTER Component Tester allows V-I characteristics of a Device - Under Test (D.U.T.).
Test Voltage 8.6V r.m.s.
Test Current 28mA max.
Test Frequency 50Hz or 60Hz (Mains).
GENERAL INFORMATION
Cathode Ray Tube 140mm Rectangular screen, Internal Graticule, 8 x 10 cm, P43 phosphor.
Accelerating potential : 2KV.
Trace Rotation Front Panel control, allows 5 of trace adjustment.
Z - Modulation TTL level.
Calibrator Provides 0.2V 1%, 1KHz (approx) squarewave output for probe compensation.
Power Requirement 230V AC 10%, 47-65Hz, 40VA or 115V AC 10% (on request).
Dimensions 165 (H) x 320 (W) x 420 (D) mm approx.
Weight 8.0 Kgs. approx.
Accessories Manual with Circuit Diagrams - 1 No.
BNC-Crocodile Cable - 1 No.
Component Tester Lead - 1 No.
Optional : High impedance switch probe with x1 or x10 Attenuation (Model 306), Trolley (Model 304).
Environmental Specifications Normal : 10C to 40C RH 85%.
Operational : 0C to 50C RH 85%.