PB-501 Logic Design 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 5 Specifications…. ................................................................ ……page 6 PB-501 Checkout ............................................................... ……page 7 Addendum……………………………………………………….…..
PRODUCT DESCRIPTION The Global Specialties Model PB-501 Logic Designer is a complete digital circuit design instrument. It can full fill modest requirements for the design and study of gates, counters, multiplexers and can even interface directly to a microprocessor. The unit contains 8 LED logic indicators, 8 logic switches, a clock and two debounced pushbuttons.
SPECIFICATIONS Input Power Source Battery - 4 "C" type Adapter - Optional 5V- Optional Clock Frequency - Fixed at 1Khz +/-50% Logic "1" output current 1.2mA @ 3.5V Logic "0" output current 1.2 mA @0.25V User variable with use of external capacitor Pulsers Fully debounced pushbuttons (2 each) with logic true and complementary outputs Logic '1" output current 400 µA @ 2.4V min Logic "0" output current 16mA max @ 0.
PB-501 CHECKOUT PROCEDURE 1. Install 4 “C” Cell batteries in accordance with the orientation indicated on the battery holder. If the optional Power Adapter is being used, plug into “J1”, and then to the wall outlet. Turn Power Switch to the “On” position and check for +5V between the “+5” and “GND” on the interconnect socket. User may also supply +5V for Trainer operation by performing the following: a. Remove batteries and power adapter. b. Install jumper between J2 & J3. c.
f. Leave wires connected. 6. LATCH TEST a. Jumper CLOCK X to PB1. Jumper CLOCK Y to PB2. A l l LEDs should be l i t . b. Set switch "0" thru 3 to not OPEN. A l l LEDs should be l i t . Press and release P B 1 ; "D0" thru “D3” should go out. c. Set switch 4 thru 7 to not OPEN. “D4” through “D7” should s t i l l be l i t . Press and release PB2; “D4” through “D7” should go out. Remove CLOCK jumpers. 7. INPUT PORT TEST a. Jumper ENABLE X to PB1. Jumper ENABLE Y to PB2. A l l LEDs should be out. b.
ADDENDUM For Capacitor C4 Installed External capacitor 100 picofarad .001 microfarad .01 microfarad . 1 microfarad 1.0 microfarad 10 microfarad For Capacitor C4 Removed 100 picofarad .001 microfarad .01 microfarad . 1 microfarad 1.0 microfarad 1 0 microfarad Frequency (HZ) 917 505 92 10 1 .1 10000 1000 100 10 1 .
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.
