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ScienTECH 820 Product Tutorial

Readout, component tester, digital multimeter and power supply
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30 MHz Oscilloscope with Color LCD Digital
Readout, Component Tester, Digital Multimeter and Power Supply
Techlab Scientech 820
Product Tutorial
Ver. 1.2
Designed & Manufactured in India by:
An ISO 9001:2008 company
Scientech Technologies Pvt. Ltd.
94, Electronic Complex, Pardesipura, Indore - 452 010 India,
+ 91-731 4211100,
: info@scientech.bz ,
:
www.ScientechWolrd.com

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Summary of Contents for ScienTECH 820

  • Page 1 30 MHz Oscilloscope with Color LCD Digital Readout, Component Tester, Digital Multimeter and Power Supply Techlab Scientech 820 Product Tutorial Ver. 1.2 Designed & Manufactured in India by: An ISO 9001:2008 company Scientech Technologies Pvt. Ltd. 94, Electronic Complex, Pardesipura, Indore - 452 010 India, + 91-731 4211100, : info@scientech.bz ,...
  • Page 2 Techlab Scientech 820 30 MHz Oscilloscope with Color LCD Digital Readout, Component Tester, Digital Multimeter and Power Supply Techlab Scientech 820 Table of Contents Safety Instructions Introduction Features Technical Specifications Front Panel Diagram Front Panel Control Back Diagram & Control...

  • Page 3: Safety Instructions

    Techlab Scientech 820 Safety Instructions Read the following safety instructions carefully before operating the product. To avoid any personal injury, or damage to the product, or any products connected to Do not operate the instrument if you suspect any damage within.
  • Page 4 Techlab Scientech 820 is an ideal Instrument for Electronics, Electrical & Instrumentation Laboratories. This Techlab 820 has Oscilloscope, Digital Multimeter and DC Power Supply in a compact space saving housing. The Scientech 820 forms an Independent Test Lab for many applications.
  • Page 5 Techlab Scientech 820 Features • 2 Channel-4 Trace Display • 40 MHz Trigger Bandwidth • Scientech Digital Multimeter • DC Power Supply ± 12 V & 5 V • Component & Continuity Tester • Microcontroller based design • Alpha numeric LCD with backlit •...
  • Page 6 Techlab Scientech 820 Technical Specifications Oscilloscope Sensitivity: Internal 0.5div, External 0.8 V Operating Modes: (approximately). Channel I, Channel II, Channel I & II alternate or chopped (approximately Horizontal Deflection (X): Input via CHII 350 KHz), X-Y operation (Ratio 1:1 Bandwidth: DC - 3 MHz (-3 dB).
  • Page 7 Techlab Scientech 820 General Information: Power Consumption: 65 VA (approximately) Cathode Ray Tube: Color Display: LCD Type: 65K Color 140 mm Rectangular tube with internal TFT, Negative Transmissive graticule. P31 Phosphor Accelerating potential: 2 KV Resolution: 128(W) ×128(H) (approximately) Viewing direction: 6 O' clock Display: 8 x 10 cm Screen Size: 1.51”...
  • Page 8 Techlab Scientech 820 Scientech 61 Digital Multimeter Technical Specifications Accuracy = ± (reading the lowest effective digit) preheating time: 30min. Temperature for accuracy guarantee: (32 ± 5) °C, R.H<75%, one year guaranteed from the production date DC Voltage (DCV) Range...
  • Page 9 Techlab Scientech 820 The input value for accuracy guarantee should be larger than 10% of range. Input resistance: 2M Ω for all range. Overload protection: 200mV range: 250V DC or AC peak value, other range: 1000V DC or AC peak value.
  • Page 10 Techlab Scientech 820 Resistance (Ω) Range Accuracy Resolution 200 Ω 0.01 Ω ± (0.1%RGD+20) 2K Ω 0.1Ω 20K Ω 1 Ω ± (0.1%RGD+5) 200K Ω 10 Ω 2m Ω 100 Ω 20M Ω 1K Ω ± (0.4%RGD+5) Open voltage : less than 3V...
  • Page 11 Techlab Scientech 820 HFE Measuring Range Displaying Test condition HFE NPN OR PNP 0-1000.0 Basic current is approx .10µA ,vce is approx .3V Diode and Continuity Test Range Description Test condition The measuring value is the approx value for Forward DCA is forward voltage drop .when the resistance under...
  • Page 12 Techlab Scientech 820 Front Panel Diagram...
  • Page 13 Techlab Scientech 820 Front Panel Controls Power ‘On/Off’ Push button switch for supplying power to instrument. Switch when pushed gives 10 times magnification of the X signal. Switch when pressed cuts off the time base & allows access to the external horizontal signal to be fed through CH 2 (used for X-Y display).
  • Page 14 Techlab Scientech 820 (17) Trace Sep Trace Separator x1 & x10 in 4 trace operation (Alt). (18) Intensity Controls the brightness of the trace. (19) TR Trace Rotation controls the alignment of the trace with graticule (screw driver adjustment). (20) Focus Controls the sharpness of the trace.
  • Page 15 Techlab Scientech 820 (39.) Hold Key (40.) Capacitance measuring plug (41) 20A Input terminal (42) Less than 2A input terminal (43) Function Knob: (44) HFE Plug (45) COM (46) V Ω Hz input terminal...
  • Page 16 Techlab Scientech 820 Back Panel Controls (47) Power switch (48) 220/ 110V switch (49) Fuse (50) Power plug (51) Fuse 350 mA fuse is provided at the back panel. Spare fuse is provided inside the instrument. (52) Z mod Banana socket provided for modulating signal input i.e.
  • Page 17 Techlab Scientech 820 Operating Instructions General Information: The 30 MHz Dual Trace Techlab Scientech 820 is a compact, low line and just trouble free new generation Minilab. It is technically advanced, as particularly illustrated by the increased use of microcontroller circuits. The logical arrangement of the controls &...
  • Page 18 Techlab Scientech 820 Type of Signal Voltage: All signals whose frequency spectrum is below 30 MHz can be displayed on the Scientech 820 • Simple electrical processes such as sinusoidal RF and AF signals or 50 Hz ripple voltages are easily displayed by the instrument.
  • Page 19 Techlab Scientech 820 The minimum required voltage on the Y input for a display of 1cm amplitude is 2 mVpp. However, smaller signals can be displayed. The deflection coefficients on the input attenuators are indicated by Vpp/cm or mVpp/cm. The magnitude of the applied voltage is ascertained by multiplying the selected deflection coefficient with the display amplitude in cm.
  • Page 20 Techlab Scientech 820. Using of probes also provides series protection for the input of the Techlab amplifier. Note: That all attenuator probes must be compensated in conjunction with the Techlab.
  • Page 21 Techlab Scientech 820 Operating Modes: The required operating modes are selected with push buttons in the vertical amplifier section. For selecting either channels, CH 1/CH 2 is pressed or released, while selecting either channel, it also selects triggering of respective channels. For selecting both the channels, Dual is pressed, the alternate or chop can be selected by pressing Alt/Chop switch.
  • Page 22 Techlab Scientech 820 If the pulse duty factor of a square signal changes drastically, and a part of this square wave deforms to a needle pulse, the operation of the "Level" control may become necessary, after pressing "Auto/ Level" switch. With composite signals the trigger facility is dependent on the occurrence of certain periodically recurring levels.
  • Page 23 Techlab Scientech 820 Component Tester Techlab Scientech 820 comes with an additional facility, a built-in Components Tester. This allows passive and active components like resistors, capacitors, inductors, transformer, silicon or germanium diodes, zener diodes, tunnel diodes, schottky diodes, transistors, JFETs, MOSFETs, UJTs, SCRs, TRIACs, and even linear and digital ICs to be tested while still in circuit.

  • Page 24: Warranty

    The repair work will be carried out, provided the product is dispatched securely packed and insured. The transportation charges shall be borne by the customer. Hope you enjoy the Scientech Experience. List of Contents •...