Nexo NXAMP 4X4, Руководство по обслуживанию

Страница: 69 / 153

Press the [B] button to enter the bridge test mode. The
following display appears.
Perfor m the test according to the “Inspection with
BRIDGE mode”. (See page 82)
If OK, press the [B] button to return the display to the
test menu screen.
4-17. CALIBRATION
Press the [B] button to start the calibration. The following
display appears.
Input the 1 kHz, +10 dBu sine wave to the channel 1 in-
put terminal, and press the [B] button. The analog input
level is automatically calibrated, and the following dis-
play appears.
Input the 1 kHz, +10 dBu sine wave to the channel 2 in-
put terminal, and press the [B] button. The analog input
level is automatically calibrated, and the following dis-
play appears.
Input the 1 kHz, +10 dBu sine wave to the channel 3 in-
put terminal, and press the [B] button. The analog input
level is automatically calibrated, and the following dis-
play appears.
Input the 1 kHz, +10 dBu sine wave to the channel 4 in-
put terminal, and press the [B] button. The analog input
level is automatically calibrated, and the following dis-
play appears.
Input the 1 kHz, +10 dBu sine wave to the channel 1 in-
put terminal.
Adjust the ENCODER so that the output voltage ob-
tained at the channel 1 output terminal is +38.1 dBu,
and press the [B] button.
The analog output level is automatically calibrated, and
the following display appears.
Input the 1 kHz, +10 dBu sine wave to the channel 2 in-
put terminal.
Adjust the ENCODER so that the output voltage ob-
tained at the channel 2 output terminal is +38.1 dBu,
and press the [B] button.
The analog output level is automatically calibrated, and
the following display appears.
Input the 1 kHz, +10 dBu sine wave to the channel 3 in-
put terminal.
Adjust the ENCODER so that the output voltage ob-
tained at the channel 3 output terminal is +38.1 dBu,
and press the [B] button.
The analog output level is automatically calibrated, and
the following display appears.
Press the [B] button to enter the analog test mode. The
following display appears.
Perform the test according to the “Inspection with analog
test mode”. (See page 79–81)
Press the [B] button. The following display appears.
If OK, press the [B] button to return the display to the
test menu screen.
4-16. BRIDGE test
4-15. ANALOG test
NXAMP4x4
69
0 0 C H O O S E T E S T < >
1 5 A N A L O G
1 7 C A L I B R A T I O N
C H 3 I N P U T S I G N A L O K ?
1 7 C A L I B R A T I O N
C H 4 I N P U T S I G N A L O K ?
1 7 C A L I B R A T I O N
C H 1 S E T T O 3 8 . 1 d B u ?
1 7 C A L I B R A T I O N
C H 2 S E T T O 3 8 . 1 d B u ?
1 7 C A L I B R A T I O N
C H 3 S E T T O 3 8 . 1 d B u ?
1 7 C A L I B R A T I O N
C H 4 S E T T O 3 8 . 1 d B u ?
1 5 A N A L O G
A N A L O G T E S T O K ?
1 5 A N A L O G
M U T E T E S T O K ?
0 0 C H O O S E T E S T < >
1 6 B R I D G E
1 6 B R I D G E
A N A L O G T E S T O K ?
0 0 C H O O S E T E S T < >
1 7 C A L I B R A T I O N
1 7 C A L I B R A T I O N
C H 1 I N P U T S I G N A L O K ?
1 7 C A L I B R A T I O N
C H 2 I N P U T S I G N A L O K ?