Specifications

14
May. 2008 DD-7
5. Depress the toe of the EV-5 pedal all the way.
Verify that the CHECK LED is lighted up red.
fig.DD-7-wave-1.eps_75
6. Unplug the EV-5 from the jack.
6. DSP Through Check (INPUT B Check)
Make the connections shown below to the INPUT and OUTPUT jacks on the
DD-7, using the settings indicated.
INPUT A: Input a rectangular wave at 400 Hz, 800 mVp-p.
INPUT B: Input a rectangular wave at 400 Hz, 800 mVp-p.
OUTPUT A: Connect the oscilloscope.
OUTPUT B: Connect the oscilloscope.
Set the oscilloscope to 500 mV/DIV, 1 ms/DIV, and coupling: DC.
1. Adjust the MODE control to the 200 ms position.
Verify that the CHECK LED goes dark.
fig.DD-7-wave-1.eps_75
2. Disconnect the plug from the INPUT B jack.
Verify that the CHECK LED lights up green.
fig.DD-7-wave-4.eps_75
If the waveforms grow larger, operation is correct. If the waveforms
show no change, operation is faulty.
3. Insert the plug into the INPUT B jack.
Verify that the CHECK LED goes dark.
fig.DD-7-wave-1.eps_75
7. DSP Through Check (INPUT A Check)
Make the connections shown below to the INPUT and OUTPUT jacks on the
DD-7, using the settings indicated.
INPUT A: Input a rectangular wave at 400 Hz, 800 mVp-p.
INPUT B: Input a rectangular wave at 400 Hz, 800 mVp-p.
OUTPUT A: Connect the oscilloscope.
OUTPUT B: Connect the oscilloscope.
Set the oscilloscope to 500 mV/DIV, 1 ms/DIV, and coupling: DC.
1. Adjust the MODE control to the 50 ms position.
Verify that the CHECK LED lights up orange.
fig.DD-7-wave-1.eps_75
2. Disconnect the plug from the INPUT A jack.
Verify that the CHECK LED lights up red.
fig.DD-7-wave-5.eps_75
If the waveforms grow larger, operation is correct. If the waveforms
show no change, operation is faulty.