Yamaha IPA8200, Service Manual

Page: 43 / 96

1. Test Conditions
Measuring Voltage : AC 100V 50/60 Hz (J)
: AC 120V 60 Hz (U)
: AC 230V 50 Hz (B, E)
: AC 220V 50 Hz (O)
: AC 220V 60 Hz (K)
Normal temperature : From 10 °C to 35 °C
Normal humidity : From 45 % to 85 %
Load : 4 Ω
(NOTE) 0 dBu = 0.775 Vrms
2. Electrical Characteristic
■
INSPECTIONS
No. Item Input Conditions Output Conditions Nominal Limit
1 Output Power
All channel input
1% T.H.D. Output 4 Ω 210 W > 200 W
8 Ω 120 W > 100 W
All channel input
8 Ω B.T.L. 420 W > 400 W
MODE switch “BRIDGE”
2 Signal to Noise Ratio Input short Ref: 1 kHz, 1 % T.H.D. Output
101 dB > 100 dB GAIN switch “32 dBu” Load: 4 Ω
Measure with A weighted
3 T.H.D All channel input 1 kHz 4 Ω 0.1 % < 0.5 %
Half power 8 Ω 0.1 % < 0.5 %
4 Frequency Response
20 Hz
Ref: 1 kHz, 1 W Output
-1 dB
> -1.5 dB
Load: 8 Ω < 0 dB
20 kHz
No Filter
-1 dB
> -1.5 dB
< 0 dB
5 Crosstalk Input: A, B, C, D, E, F, G, H to adjacent
channel
Ref: 1 kHz
Half power output
70 dB > 60 dB Measured channel, Input impedance =
600 Ω
Load 8 Ω
GAIN switch “32 dBu”
6 Residual Noise Attenuator: Minimum Load: 8 Ω
-72 dBu < -70 dBu Input impedance = 150 Ω Measure with A weighted
GAIN switch “32 dBu”
7 GAIN Switch Input: 1 kHz, -10 dBu Ref: Switch “26 dBu” Switch “26 dB” 16 dBu 16 ±2 dBu
Load: 8 Ω Switch “+4 dBu” 1.2 dB 1.2 ±2 dB
Switch “32 dB” 6.0 dB 6.0 ±2 dB
8 HPF Switch Ref: Switch “OFF”
20 Hz
Ref: Switch “OFF”
Switch “20 Hz” -3.2 dBu -3.2 ±2 dB
1 W Output
55 Hz
Load 8 Ω
Switch “55 Hz” -3.2 dBu -3.2 ± 2 dB
9 Idle Output Power No input Load: 4 Ω
67 W
70 W
± 10 % Consumption
10 1/8 Output Power
Consumption
Input all channel
1 kHz, sine wave
Ref: 25 W output
Load: 4 Ω
360 W < 400 W
INPUT : 1 kHz
Attenuator : All channel maximum
MUTE switch : All channel OFF
GAIN switch : “26 dBu”
HPF switch : “OFF”
MODE switch : “STEREO”
FILTER : DIN – Audio
IPA8200
43