Sine Wave Test - Kurzweil PC3x Service Manual

Diagnostics
Description of Tests

Sine Wave Test

For a pure sine wave that exercises the full dynamic range of the PC3x, press the Run PC3 soft
button to exit diagnostics and return to normal operation. In Program mode, use the numeric
keypad and select program 1000, Sine Wave.
Warning: This test can produce a very high level (20-30dB higher than normal which can be
damaging), and must be activated in order to play. Follow Steps 1–5 to activate and run the test.
1. Position the volume slider and sliders 1-9 to minimum.
2. Use the numeric keypad and select program 1000, Sine Wave.
3. Press the SW1 button located directly above the Mod Wheel.
4. Play C4 (Middle C) to produce a 261 Hz sine wave at all of the outputs.
5. Move the volume slider up slowly.
Note: Do not touch Slider 1 or the amplitude may change.
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Table 2-1
2-8
FREQUENCY
NOTE Hz
D2 20.6
F#2 32.7
C3 65.4
F#3 130.8
C4 261.6
F#4 523.2
C5 1046.5
F#5 2092.8
C6 4186.0
F#6 8371.2
C7 16744.0
D7 21096.1
Frequency and Amplitude Values
AMPLITUDE
(Tip or Ring to Sleeve)
Vrms Vp-p
3.08 4.35
3.21 4.54
2.80 3.95
2.80 3.95
2.80 3.95
2.80 3.95
2.77 3.92
2.80 3.95
2.80 3.95
2.81 3.97
3.00 4.24
2.77 3.92
dBm
+12.0
+12.3
+11.2
+11.2
+11.2
+11.2
+11.1
+11.2
+11.2
+11.2
+11.8
+11.1