22
Jun. 2014 GP-10
Verification of AF-AD waveform
11. Input a signal like the one shown below to the normal input connector on
the GK-3.
200-Hz, 2.0 Vp-p, sine wave
12. Connect the oscilloscope to the OUTPUT L/MONO and R jacks.
Oscilloscope settings: 2.0 V/1.00 msec
13. Verify that signals like the ones shown below are output.
OUTPUT L/MONO, R: 2.2 Vp-p±0.5 V
fig.test9-6.eps
14. Press to move the flashing cursor on the screen to AF.
fig.test9-7.eps
15. Turn the PATCH/VALUE knob counterclockwise to change the screen
display to af.
fig.test9-8.eps
16. Verify that signals like the ones shown below are output.
OUTPUT L/MONO: 2.2 Vp-p±0.5 V
OUTPUT R: 6.0 Vp-p±0.5 V
fig.test9-9.eps
17. Turn the PATCH/VALUE knob clockwise to change the screen display to
AF.
Verification of MUTE operation
18. Press to move the flashing cursor on the screen to mut.
fig.test9-10.eps
19. Turn the PATCH/VALUE knob clockwise to change the screen display to
MUT.
fig.test9-11.eps
20. Verify that no signals are output.
fig.test9-12.eps
21. Turn the PATCH/VALUE knob counterclockwise to change the screen
display to mut.
Verification of GK IN input
22. Disconnect the plug from the normal input connector on the GK-3.
(Allow only input from the GK pickup.)
23. Adjust the selector switch on the GK-3 to MIX.
24. Play each string from the 6th to the 1st in sequence and verify that signals
are output from OUTPUT L/MONO and R as shown in the following
chart.
25. Press or to move the flashing cursor on the screen to G1.
fig.test9-13.eps
26. Turn the PATCH/VALUE knob clockwise to change the G1 display on the
screen to G2, G3, and G4, and verify that the input guitar sound
simultaneously becomes louder.
* Note that G3 and G4 are about the same level.
27. Connect the oscilloscope to the PHONES jack and repeat steps 24
through 26.
28. Detach the guitar equipped with the GK-3 from the GK IN connector.
Strings Output channel
6 R
5 L
4 R
3 L
2 R
1 L
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