5 in 1 Testlab with Oscilloscope   Model 3744
  
     
 
Features
Model 3744
  • Triple Output DC Source for External Use
  • 100MHz Frequency Counter Measures Frequency of Function Generator or Waveform Displayed on Oscilloscope, also Input for External Use
  • Function Generator Operates in the Range of 0.02Hz to 2MHz with 50 ohms Output Impedance and Attenuation upto 60dB
  • Low Cost Solutions to Diverse Test and Measuring Requirements in the Laboratory
  • Comprises of Several Instruments in One Package - Dual Trace Oscilloscope, Component Tester/Comparator, Triple Output DC Power Source, Frequency Counter and Function Generator
  • Oscilloscope with dc to 30MHz Bandwidth and 1mV/div Sensitivity on Both Channels
  • 140mm Rectangular CRT and 8 x 10 cm Display with Internal Graticule
  • 40ns/div to 0.2s/div Time Base
  • Z Modulation
  • X-Y Operation
  • TV Triggering Frame (V) & Line (H)
  • Line Trigger
  • Component Tester / Comparator for Quick Evaluation of Component Characteristics
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 the sensitivity to 1mV/div & 2mV/div (LEDindicated).
Accuracy ±3%.
Bandwidth DC - 30MHz (-3dB), dc coupled
10Hz - 30MHz (-3dB), ac coupled.
Rise Time 11.6ns or less.
Display Modes CH1 only, CH1 & CH2 alternate or chop mode, Algebraic addition CH1+CH2, Algebraic subtraction CH1-CH2, CH2 invert & X-Y.
Input Impedance 1M ohms // 25pF (approx).
Maximum Input Voltage 400V (DC + AC peak).
Internal Trigger Signal CH1 or CH2 signal.
TIME BASE
Sweep Speed 18 calibrated steps. 0.5µs/div to 0.2s/div in 1, 2 & 5 sequence.
Sweep Magnifier x5 Magnification extends the sweep speed to 100ns/div.
x5 Magnification indication wtih LED.
Accuracy ±3%.
Variable Uncalibrated continuously variable control between steps, extends fastest sweep speed to 40ns/div (approx) (Uncal LED indication).
Hold-off Time 4:1 (approx.) variable control.
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-V / TV-H.
Trigger Sensitivity Internal : AUTO 1 div 30Hz - 30MHz
NORM 1 div 3Hz - 30MHz.
External : AUTO 1V p-p 30Hz - 30MHz
NORM 1V p-p 3Hz - 30MHz
(Typical 40MHz at 2 div).
HORIZONTAL DEFLECTION Horizontal input via CH2 (CH1 operates as Y).
Deflection Coefficient Same as CH2.
Bandwidth DC - 1MHz (-3dB).
Input Impedance 1M ohms and 25pF (approx).
GENERAL
Cathode Ray Tube 140mm Rectangular Screen, Internal Graticule 8 x 10 cm, P31 Phosphor.
Accelerating potential : 2kV.
Trace Rotation Front Panel Control, allows ±5º of trace adjustment.
Z Modulation 30V p-p signal upto 1MHz modulates at normal intensity.
Calibrator Provides 0.2V ±2%, 1KHz squarewave output for probe compensation.
DUAL COMPONENT TESTER/COMPARATOR Dual Component Tester allows comparison of a Device-Under-Test (D.U.T.) and a sample device.
Test Voltage 8.6V rms.
Test Current 28mA max.
Test Frequency 50Hz or 60Hz.
TRIPLE OUTPUT D.C. SOURCE Three independent, regulated DC outputs, +5V at 1A max and ±12V at 200mA max. continuous (common floating w.r.t. ground).
Line / Load Regulation ±2%.
Ripple Less than 8mV r.m.s.
Termination 2mm Jacks on the Front Panel.
0.02Hz - 2MHz FUNCTION GENERATOR
Frequency Range 0.02Hz to 2MHz in 8 decade ranges.
Output Waveform DC, sine, triangle, square.
DC Offset ±5V (across 50 ohms), ±10V (open circuit).
Maximum Output Voltage 10V p-p for all functions (with 50 ohms loads).
20V p-p open circuit (DC + AC peak not exceed 10V across 50 ohms).
Output Impedance 50 ohms (nominal).
Attenuator 0dB to 40dB in steps of 20dB, 20dB fine attenuation by amplitude control.
Accuracy ±0.5dB per 20dB step at 1KHz.
Sine Distortion Less than 3% upto 200KHz.
100MHz DIGITAL FREQUENCY COUNTER
Frequency Range 10Hz to 100MHz (usable).
Gate Time 0.01, 0.1, 1 & 10 sec (switch selectable).
Accuracy ±1 count ± Time Base accuracy.
Time Base 10MHz crystal oscillator.
Accuracy ±20 ppm at 25ºC.
Stability ±30 ppm over 0ºC to 50ºC range.
Inputs (Switch Selectable).
Gen Frequency of Function Generator.
Scope Signal through triggered channel of scope.
Ext External signal through BNC connector.
Sensitivity  
Scope Input Min. 4 div p-p swing on oscilloscope.
Ext Input 20mV rms over 10Hz to 50MHz.
50mV rms over 50MHz to 100MHz.
5V p-p max.
Input Impedance  
Ext Input 1M ohm // 30pF.
Display 7 digit, 0.3" LED display indicates frequency in Hz, KHz & MHz.
GENERAL INFORMATION
Power Requirement 115V/230V AC ±10%, 47/65Hz, 75VA (max.).
Dimensions 235 (H) x 315 (W) x 420 (D) mm approx.
Weight 10 Kgs. approx.
Accessories Instruction Manual, 2 Input BNC Leads, Component Tester Leads.
Optional : High impedance switch probe with x1 or x10 Attenuation (Model 306), Trolley (Model 304).
 

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