27
DTXPRESS
30
H.H.
CONT.
99
[Depress]
30
H.H.
CONT.
MIN-
0
[Release]
To the next test
* If the "99", "MIN- 0" value is in the nearby range, proper
operation is available.
[Check item]
Check the LCD test result.
(When the result is OK, testing proceeds to the next test and
remains in the standby mode.)
[Indication of judgment result]
When the result is OK, C-31. OUTPUT L 1kHz test is started
automatically.
When the result is NG
None
[Content of FAIL judgment]
Testing does not proceed to the next test.
[MIDI code output of judgment result]
OK
A0 1E 02
FAIL A0 1E 03
[Completing the test]
When the result is OK, testing proceeds to the next test..
C-31. OUTPUT L 1kHz
[Test code]
1F
[Initial indication]
31
OUTPUT
L
1kHz
[Test content]
Check that correct signal is being outputted from OUTPUT (L/
MONO).
[Test method]
Press the [SAVE/ENTER] key to execute the test.
Execute C-30.H.H.CONT. test. If its result is OK, testing is
started automatically. Set VOLUME to MAX.
Connect the standard phone plugs to both of OUTPUT (L/
MONO and R) and measure frequency, waveform, level and
total harmonic distortion of each output signal. After that,
disconnect the plug connected to OUTPUT (R) and measure
the output of OUTPUT (L/MONO) again. Check to make sure
that the plug is not connected to AUX IN.
[Check item]
• OUTPUT (L/MONO)
Frequency: 1kHz
±
3Hz
Waveform: Sine wave
Level: -5.5
±
2dBu (load of 10k
Ω
)
Total Harmonic Distortion: 0.5% or less
• OUTPUT (R)
Level: -65dBu or lower (load of 10k
Ω
)
■
When the plug is disconnected from OUTPUT (R)
• OUTPUT (L/MONO)
Frequency: 1kHz
±
3Hz
Waveform: Sine wave
Level: -11.0
±
2dBu (load of 10k
Ω
)
Total Harmonic Distortion: 0.5% or less
[Indication of judgment result]
None
[Content of FAIL judgment]
None
[MIDI code output of judgment result]
A0 1F 01
(This code is outputted after the sine wave is outputted.)
[Completing the test]
When the result is OK, press [SAVE/ENTER] key, and [A0 1F
02] is output from MIDI OUT and testing proceeds to the next
test.
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