<< Chapter < Page Chapter >> Page >

Test equipment:

  • Wavetek 270 Function Generator
  • Tektronix 2213A Oscilloscope

System set-up

Before beginning the lab, you need to make sure that the system is set up correctly. Follow the instructionsbelow to setup the station.

Instructions are included for both the SPEEDY-33 and TI 6711 DSK, follow instructions appropriate to the hardware on your station.

Hardware setup

Ni speedy-33 setup instructions

Ni speedy-33 dsp board

NI SPEEDY-33 Installation Guide Part #: 371581A-01, 324158A-01
  • Log on to the computer
  • Connect a USB cable between the PC USB Port of the SPEEDY-33 (Figure 2 #7) and the USB port of your PC. The SPEEDY-33 is poweredby the USB port. Once you connect the cable, the green Power LED (Figure 2 #2) on the SPEEDY-33 will light.
  • Confirm that the Power LED on the SPEEDY-33 is lit.
  • If the New Hardware Found Wizard starts, follow the instructions to configure the drivers.
  • Connect your headphones to the black 3-pronged headphone booster and connect this booster to the Audio Stereo Output Port (Figure 2 #4) on the SPEEDY-33. Turn on the headphone volumebooster.
  • Connect the light gray cable coming out of the computer (which is the audio output from the computer sound card) to theshort gray male-male adapter cable and connect this, in turn, to the Audio Stereo Input Port (Figure 2 #3) of the SPEEDY-33. Thesoundcard output (either CD audio or microphone) will be the input to the DSP board for most of this lab.
  • Switch the Jumpers on the SPEEDY-33 to the Line position. Refer to Figure 1 for the location of the Line/Microphone Jumpers(Figure 2 #9).

Ti 6711 dsk setup instructions

  • Plug the A/C adapter into the DSP board and make sure that the power LED is lit.
  • Connect your headphones to the black 3-pronged headphone booster and connect this booster to the OUT jack on the audiodaughter card attached to the DSP board. Do not use the OUT jack directly on the DSP board. Turn on the headphone volumebooster.
  • Connect the light gray cable coming out of the computer (which is the audio output from the computer sound card) to theshort gray male-male adapter cable and connect this, in turn, to the IN jack of the audio daughter card. Do not use the IN jackdirectly on the DSP board. The soundcard output (either CD audio or microphone) will be the input to the DSP board for most of thislab.
  • Log on to the computer.
  • Once you log on, a DSK Init window should appear on the task bar. Click on it to open up the window and then press ENTER asoften as needed to complete the initialization. This configures the parallel port of the computer to communicate with the DSP board.Note: If you forgot to supply power to the DSP board prior to this step, the initialization will fail. In which case, you will have tolog off, power up the DSP board, and then log on again and run the initialization routine again.
  • Select the EE 453 folder and create a folder within this folder to store your lab files. Use some descriptive name toidentify your lab group. The path for this folder will be Desktop\ee 453\<folder name>
  • Activate Surround Mixer, a program which controls the input/output operation of the sound card. The Surround Mixercontrol panel is a mixer consisting of numerous volume bars, each controlling a different aspect of the sound card. The far leftvolume bar controls the master volume. Make sure that the master volume is set to 100%. The volume bars in the middle control thevarious types of sound sources that the sound card can play (wave files, microphone input, MIDI input, music CD input, etc). Makesure that the wav/mp3, microphone, and line-in volumes are set to 100%.
  • Beneath each of the volume bars is a mute box that can be toggled on/off. When checked, the corresponding sound source isdeactivated. Make sure that all source buttons are muted for now.
  • Keep the Surround Mixer open throughout the lab. You will be selecting various inputs (wave, microphone, and line-in) throughoutthe lab.
When you are finished with each lab, exit LabVIEW, log off the computer, turn off the function generator and the headphone volume booster, and unplug the DSP board from the A/C adapter. Turn in Answered Questions to the TA.

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Fundamentals of digital signal processing lab. OpenStax CNX. Jan 03, 2006 Download for free at http://cnx.org/content/col10303/1.5
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Fundamentals of digital signal processing lab' conversation and receive update notifications?

Ask