RSR/VT A&D “ANDY” Board User Manual and Test Procedure Version 2.2 June 5, 2006 Copyright © 2005-2006 By R. B. Lineberry, W. C. Headley, and R. W.
A&D Board User Manual and Test Procedure General Operating Instructions 1) Read this manual in its entirety before engaging in any experimentation. 2) The A&D (ANDY) board should be tested upon receipt to assure that all sections of the board operate within specifications. See the Test Procedure section. 3) Never construct a circuit or insert any wiring with power applied to the board. 4) Construct the circuit per your laboratory manual and then double check the wiring.
A&D Board User Manual and Test Procedure Digital Clock • +0.3 to +4.
A&D Board User Manual and Test Procedure Operation The circuit diagram of the ANDY board is shown in Appendix A. The silk screen of the board is shown in Figure 1. The six different sections of the board that are used to connect to the breadboard are outlined in red: the power sources; the digital logic probes; the digital switches; the digital pulsers; the digital clock; and the function generator. Each section has labeled socket headers associated with it.
A&D Board User Manual and Test Procedure It is common practice to connect each power source to a breadboard bus. The busses are labeled with a red line to represent the ‘+’ busses and a blue line to represent the ‘-‘ busses. These busses provide a convenient and effective method to distribute power to your circuit For advanced users, the raw power supplied to the board by the wall adapter is available in the socket headers labeled “+12V Raw” and “-12V Raw”.
A&D Board User Manual and Test Procedure The "up arrow" pulser starts at logic LOW (or 0) and becomes HIGH (or 1) only when the button is pushed. E) Digital Clock The digital clock provides a square wave output with approximately 50% duty cycle. Its frequency can be varied between about 60 Hz and 40 kHz, using the CLK FRQ knob. The clock frequency increases when the knob is turned clockwise. The high state is typically 4.7V and the low state is typically 0.3V.
A&D Board User Manual and Test Procedure Test Procedure The test procedure for the ANDY board is found in Appendix B. This procedure should be followed when first receiving the board to determine if the board is functioning according to specifications. When a problem arises, the test procedure can be used to narrow the scope of the problem. User Repairs The user should not attempt to repair the ANDY board, without explicit instructions from your course instructor or technical support team.
A&D Board User Manual and Test Procedure Appendix B: A&D Board Test Procedure Use this check sheet to perform an initial verification of the A&D board. Place a check mark in the box to the left of each item as it is completed. Name:_______________________________ Student No:______________________ Required Equipment • A&D Board, with Power Supply Module • Tektronix TDS210 oscilloscope. 1 • A BNC-to-mini-grabber test lead, available in the Computer Engineering Labs.
A&D Board User Manual and Test Procedure Oscilloscope Operation 2 Figure 2: TDS210 Oscilloscope Front Panel 1. [ ] Turn on the TDS210 oscilloscope. The power button is top left. 2. [ ] Connect a BNC-to-mini-grabber cable to the CH 1 BNC connector of the TDS210 oscilloscope. 3. [ ] Connect the red mini-grabber end to the TDS210 PROBE COMP ~ 5V _⎡⎤_ (upper connector). 4. [ ] Press the CH 2 Menu button until the CH 2 indicators disappear from the bottom of the screen. 5.
A&D Board User Manual and Test Procedure Power Supply Operation 1. [ ] Disconnect the red mini-grabber from TDS210 PROBE COMP ~ 5V _⎡⎤_. 2. [ ] Gently rotate the DIN5 connector of the power supply module to find the correct orientation and plug it into the A&D board. 3. [ ] Plug the power supply module into a 120V AC outlet. 4. [ ] Set the Logic Probes switch to “ON”. Notice the Logic Probe LEDs are lit and possibly blinking. 5. [ ] Press the TDS210 MEASURE button. 6.
A&D Board User Manual and Test Procedure 15. [ ] The oscilloscope should display a straight horizontal line at about 5V. See Figure 5. Figure 5: Oscilloscope Display of +5V Power Supply 16. [ ] Verify that the Mean voltage is 5V ± 5%. 17. [ ] Verify that the Pk-Pk voltage is around 300 mV or less. 18. [ ] Remove the red and black mini-grabbers from the 10kΩ resistor. 19. [ ] Connect the 10kΩ resistor between +9V and GND. 20. [ ] Turn the TDS210 CH1 VOLTS/DIV knob counter-clockwise to indicate 5.
A&D Board User Manual and Test Procedure 27. [ ] Connect the scope probe mini-grabbers across the 10kΩ resistor, black to GND. 28. [ ] The oscilloscope waveform should be a straight horizontal line at about -9V. See Figure 7. Figure 7: Oscilloscope Display of -9V Power Supply 29. [ ] Verify that the Mean voltage is -9V ± five percent. 30. [ ] Verity that the Pk-Pk voltage is around 400 mV or less. v. 2.2, © 2005-2006 by R. B. Lineberry, W. C. Headley, & R. W. Hendricks p.
A&D Board User Manual and Test Procedure Digital Clock 1. [ ] Remove the red and black mini-grabbers from the 10kΩ resistor. 2. [ ] Turn the TDS210 CH1 VOLTS/DIV knob one click clockwise to indicate 2.00 V/division. 3. [ ] Connect a 10kΩ resistor between the A&D Board CLK and GND socket connectors. 4. [ ] Connect the scope probe mini-grabbers across the 10kΩ resistor, black to GND. 5. [ ] Note that the LED, next to the CLK socket connector, glows green and red.
A&D Board User Manual and Test Procedure 15. [ ] Turn the TDS210 SEC/DIV knob clockwise, to display approximately 4 waveforms. See Figure 9. Figure 9: Oscilloscope Display of 40 kHz Digital Clock 16. [ ] Verify that the Digital Clock is producing a square wave, with about 5V Pk-Pk and 40 kHz Frequency. The waveform should rise and fall quickly. The tops and bottoms may have some ringing, undershoot, and noise, which is normal. Sine/Square Wave Function Generator 1.
A&D Board User Manual and Test Procedure 10. [ ] Gradually turn the A&D AMPLITUDE knob clockwise and verify that the amplitude increases up to approximately 10V Pk-Pk at 60 Hz as shown in Figure 10. Figure 10: Oscilloscope Display of 60 Hz Sine Wave 11. [ ] Turn the TDS210 SEC/DIV knob clockwise to indicate 100us/division. 12. [ ] Gradually turn the A&D FREQ (60 Hz to 5 kHz) knob clockwise and verify that the frequency increases up to approximately 5 kHz at 10V Pk-Pk as shown in Figure 11.
A&D Board User Manual and Test Procedure 13. [ ] Turn the TDS210 SEC/DIV knob clockwise to indicate 10us/division. 14. [ ] Gradually turn the A&D FINE FRQ (5 kHz to 20 kHz) knob clockwise and verify that the frequency increases up to approximately 20 kHz at 10V Pk-Pk as shown in Figure 12. Figure 12: Oscilloscope Display of 20 kHz Sine Wave 15. [ ] Keeping the A&D AMPLITUDE knob turned fully clockwise, set the A&D OFFSET SW to “ON”. 16. [ ] Gradually rotate the A&D OFFSET knob in both directions.
A&D Board User Manual and Test Procedure 21. [ ] Minimize the A&D FINE FRQ control. Verify an output of approximately 5 kHz at 13V Pk-Pk as shown in Figure 14. Figure 14: Oscilloscope Display of 5 kHz Square Wave 22. [ ] Turn the TDS210 SEC/DIV knob counter-clockwise to indicate 5ms/division. 23. [ ] Minimize the A&D FREQ control. Verify an output of approximately 60 Hz at 13V Pk-Pk as shown in Figure 15. Figure 15: Oscilloscope Display of 60 Hz Square Wave v. 2.2, © 2005-2006 by R. B. Lineberry, W. C.
A&D Board User Manual and Test Procedure 24. [ ] While watching the TDS210 CH1 Pk-Pk display, adjust the A&D AMPLITUDE knob to obtain approximately 1V Pk-Pk (Hint: adjust TDS210 CH1 VOLTS/DIV as needed). While watching the TDS210 CH1 Freq display, adjust the FREQ knob to obtain a 1 kHz square wave (Hint: adjust TDS210 SEC/DIV as needed). See Figure 16. Figure 16: Oscilloscope Display of 1 kHz Square Wave 25. [ ] Set the A&D SHAPE toggle to “SIN” for Sine Wave output. 26.
A&D Board User Manual and Test Procedure Logic Probes 1. [ ] Set the LOGIC PROBE switch to ON. 2. [ ] Make sure all Logic Probe LEDs are lit. Note: When a logic indicator has no input it is in an indeterminate state and the color of its LED could be red, green, or flickering. For fun, run your finger over the tops of the Logic Probe inputs. 3. [ ] Connect a wire between the +5V socket connector and logic probe 1 (LP1). The LP1 LED should be lit red indicating a logic HI or ‘1’.
A&D Board User Manual and Test Procedure Completion 1. [ ] Unplug the power supply module from the 120V AC outlet and then the DIN5 connector from the breadboard. 2. [ ] Write a detailed description of any test that does not meet specifications in the comment block below. 3. [ ] If you had difficulty with any of the test procedures, or discovered errors, please comment below and communicate this information to your instructor. 4.
