Yamaha i88x Service Manual page 50

i88X
INSPECTIONS
Test Item List
Test Number Item, Measuring Requirements etc.
T01 FS,Jitter, mLAN ACTIVE LED Check
T02 MIDI IN/OUT Check
T03 OPTICAL IN/OUT Check
T04 HiZ Check
T05 MIC Check
T06 ANALOG INPUT/OUTPUT, UNLOCK Check
T07 COAXIAL INPUT/OUTPUT Check
T08 ADAT 96KHz INTPUT/OUTPUT Check
T09 ADAT 48KHz INTPUT/OUTPUT Check
T10 ATSC2 CLOCK Check
T11 Factory Set
Measuring Requirements
When executing this test program, the following measuring instruments etc. are required.
Instruments:
• Digital Audio Analyzer (ATS-2) or the equivalent
• Oscilloscope ( Input Impedance: more than 1M ohm )
• DC/AC Current Meter ( Internal Resistance: 0.1 ohm or less)
Others:
• Player with analog outputs ( Balance/Unbalance )
• Keyboard Amplifier ( KS15 or the equivalent )
• 01V96(Uses MIDI Test*
• PC (Refer to the P42 SOFTWARE ONLY FOR THE mLAN INSPECTION), Optical Input/Output Device etc.
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* It is possible to substitute it with MIDI Monitor.
Measuring Conditions:
• It is time when the value of the Noise level, crosstalk, and the Distortion Rate used 20KHz LPF of measuring
instrument ATS-2 and it is regulated.
• Input Signal for Test: Sine wave of 1KHz(RS=150 ohm)(Distortion Rate: 0.001% or less), unless otherwise speci-
fied.
• Load Conditions of Analog Input/Output plug for Test:
CH1 & CH2: Input Termination Resistance : 150 ohm (between Hot and Cold)
CH1-CH8 : Output Load Resistance :
PHONES : Output Load Resistance :
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and ADAT Test), MIDI Monitor
10K ohm (between Hot and Cold)
33 ohm