Specifications

15
May. 2008 DD-7
3. Insert the plug into the INPUT A jack.
Verify that the CHECK LED lights up orange.
fig.DD-7-wave-1.eps_75
8. DSP Through Check (OUTPUT 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 HOLD position.
Verify that the CHECK LED has gone dark.
fig.DD-7-wave-1.eps_75
2. Disconnect the plug from the OUTPUT A jack.
Verify that the CHECK LED lights up green.
fig.DD-7-wave-6.eps_75
3. Insert the plug into the OUTPUT A jack.
Verify that the CHECK LED goes dark.
fig.DD-7-wave-1.eps_75
9. DSP Through Check (OUTPUT B Check)
& CLIP Check
Make the connections shown below to the INPUT and OUTPUT jacks on the
DD-7, using the settings indicated.
INPUT A: Input a sine wave at 400 Hz, 4.0 V p-p.
INPUT B: Input a sine wave at 400 Hz, 4.0 V p-p.
OUTPUT A: Connect the oscilloscope.
OUTPUT B: Connect the oscilloscope.
Set the oscilloscope to 2.0 V/DIV, 1 ms/DIV, and coupling: DC.
1. Adjust the MODE knob to the MODULATE position.
Verify that the CHECK LED lights up orange.
Verify that the waveforms are not clipped.
fig.DD-7-wave-7.eps_75
2. Disconnect the plug from the OUTPUT B jack.
Verify that the CHECK LED lights up red.
fig.DD-7-wave-8.eps_75