PB-500 Analog Circuits Trainer Instruction Manual 10/2009
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ABOUT GLOBAL SPECI ALTIES Thank you for selecting this Global Specialties product. You won't be disappointed! Since 1973, Global Specialties has been the recognized leader in technical education courses, training equipment and tutorial materials. Our electronics and microcomputer teaching systems have proven to be effective in secondary schools, technical schools, colleges, universities and industrial training departments throughout the world.
TABLE OF CONTENTS Product Description ................................................................ page 6 Specifications ..........................................................................page 7 Checkout ................................................................................. page 8 Addendum ............................................................................... page 11 Service & Warranty Information ..............................................
INTRODUCT ION The Global Specialties Model PB-500 Analog Circuits Trainer is an analog breadboarding instrument with built-in power supplies and function generator. It can be used for analog circuit design and training purposes and its unique combination of built-in functions and uncommitted devices makes it one of the most convenient breadboarding systems available. Power supplies - The PB-500 has four regulated DC power supplies available for breadboarding.
SPECIFICATIONS Input Power Source Regulated wall mount adapter with outputs of +/12VDC @ 200mA, 5VDC @ 250mA Power Supplies Fixed - 12VDC @ 200mA +/- 5% Fixed - (-)12VDC @ 200mA +/- 5% Variable - 0 to 7.5VDC @ 50mA +/- 10% Variable 0 to (-) 7.5VDC @ 50mA +/- 10% Function Generator Connectors Slide Potentiometers Slide Switches Speaker Breadboards Weight Dimensions Frequency - Factory set to 1Khz. Variable with use of external capacitor from 0.
PB-500 CHECKOUT 1. Power Section - AC Adaptor Operation a) Plug AC adaptor into Jl then in wall outlet. Check for -12 volts between "-12 v" and "GND. b) Check for +12 volts between "+12 v" and "GND". Voltages should measure +/ -12 volts +/ -5%. 2. Variable Supplies a) Measure the voltage between " -V" and "GND", using the slide pot (R2) the supply voltage should vary from 0 to -7.5 volts +/ 10%.
5. Speaker a) Jumper "SPKR -" to "GND" and "SPKR+" to "SOR". b) A 1KHz tone should be audible from the speaker. c) Remove the jumper between "SPKR+" and "SOR" and the tone should no longer be audible 6. Uncommitted Switches (SI & S2) (S1) a) Set SI to the "1,2" position. b) Jumper "SQR" to "Sl-2" and "SPKR+" to "Sl-1" c) A 1KHhz tone should be audible from the speaker. d) Set SI to the "2,3" position. e) The tone should no longer be audible f) Move the jumper from "Sl -1" to "Sl-3".
b) Connect an ohmmeter (100k range) between "100k -1" and "100k-2". c) The meter should read 0 ohms. d) Move the slider gradually to the right and observe the ohmmeter. e) The reading on the meter should increase from 0 to 100k ohms i n proportion to the movement of the slider. f) Move the ohmmeter lead from "100k -2" to "100k -3" and check for approximately 100k ohms. 8. BNC Connectors (BNC -1 & BNC-2) (BNC-1) a) Check for continuity between "BNC -l-"and the metal shell of BNC-1.
ADDENDUM NOTE 1: Function Generator operating frequency with "INT" to "COM" jumper removed and external capacitor installed. External capacitor (microfarads) 1000 100 10 1 .1 .01 .001 11 Frequenc y (Hertz) 0.
SERVICE AND WARRANTY INFORMATION For up-to-date product information, please visit www.globalspecialties.com. For instructions on how to obtain a return merchandise authorization number (RMA), please visit our website, or call our customer service department. GLOBAL SPECIALTIES 22820 Savi Ranch Parkway Yorba Linda, CA 92887 800-572-1028 globalspecialties.com Global Specialties will service and repair this instrument free of charge for a period of 3 full years, subject to the warranty conditions below.
