12
Mar.2002
11. CODEC (ADC MIX) check
1.
Input a sine wave (1kHz, +5dBm).
2.
Set the [TYPE] volume knob to ‘CUSTOM.’ (The “MEMORY” indictor
lights up red.)
3.
Check the output waveform (AF-AD DSP through) with an oscilloscope.
fig.wave5_45
12. Normal waveform check
1.
Input a sine wave (200Hz, 400mVp-p).
2.
Power off and on the unit again to enter normal operations, and use an
oscilloscope to check the waveform generated when the initial pedal
position is restored.
fig.test4-2_30
fig.wave7_65
3.
Step down the pedal and check that the waveform changes smoothly.
4.
Check the waveform generated at the pedal position when it stops, using
an oscilloscope.
fig.test4-1_30
fig.wave6_65
5.
Press the [MEMORY/MANUAL] button to check the waveform.
fig.wave8_65
13. Noise check
1.
Insert a 47 k ohm short plug into the INPUT jack.
2.
Set the [TYPE] volume knob to ‘ADVANCED,’ the [WAH RANGE]
volume knob to the central position and the [DRIVE] volume knob to
‘OFF.’
3.
Using a noise meter, check that the residual noise level is ‘-87dBm’ or
below.
4.
Connect the monitoring speaker and check that no shock noise is
generated.
14. Battery operation check
1.
Remove the DC plug and install a battery.
2.
Insert a plug into the INPUT jack and check that power can be applied to
the unit.
3.
Next, check that the unit operates normally.
This completes the test mode.
