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6-3-2. Adjustment Procedure
Output Level Adjustment
Preparation
1.
Open the maintenance menu and set [M374: ANALOG I/O] to "2ch IN/OUT".
2.
Open the setup menu and set [808: INTERNAL AUDIO SIGNAL GENERATOR] to "1 kHz sine [1kHz]".
3.
Open the function menu and set the following items.
[HOME] → [F1: INT SG]:
•
[P1 AUDIO] → [F2: MONITR L]:
•
[P1 AUDIO] → [F3: MONITR R]:
•
4.
Perform chase playback. (Refer to the Operating Instructions of the unit.)
Channel-1 Adjustment
1.
Connect the ANALOG AUDIO INPUT 3 connector to the input connector of the audio level meter or the audio analyzer.
Tip
The ANALOG AUDIO CH1 signal is output according to the menu settings.
2.
Display the maintenance menu.
3.
Select "A272: OUTPUT UNITY".
Tip
Maintenance menu → M1: SERVICE SUPPORT → M1F: ADJUST → A27: APR VR → A272: OUTPUT UNITY
4.
Select "OUTPUT LEVEL CH1".
The OUTPUT LEVEL CH1 ADJUST window appears.
5.
Check and adjust the level on the audio level meter or audio analyzer while changing the set value with the PUSH SET knob.
Specification: +4.0 ± 0.1 dBu (across 600 Ω load).
6.
Press the F1 (RETURN) button to return to the "A272: OUTPUT UNITY" screen.
Channel-2 Adjustment
1.
Connect the ANALOG AUDIO INPUT 4 connector to the input connector of the audio level meter or the audio analyzer.
Tip
The ANALOG AUDIO CH2 signal is output according to the menu settings.
2.
Select "OUTPUT LEVEL CH2".
The OUTPUT LEVEL CH2 ADJUST window appears.
3.
Check and adjust the level on the audio level meter or audio analyzer while changing the set value with the PUSH SET knob.
Specification: +4.0 ± 0.1 dBu (across 600 Ω load).
4.
Press the F1 (RETURN) button to return to the "A272: OUTPUT UNITY" screen.
MONITOR L-Channel Adjustment
1.
Connect the AUDIO MONITOR L connector to the input connector of the audio level meter or the audio analyzer.
2.
Select "MONITOR LEVEL Lch".
The MONITOR LEVEL Lch ADJUST window appears.
3.
Check and adjust the level on the audio level meter or audio analyzer while changing the set value with the PUSH SET knob.
Specification: +4.0 ± 0.1 dBu (across 600 Ω load).
4.
Press the F1 (RETURN) button to return to the "A272: OUTPUT UNITY" screen.
"ON"
"CH1"
"CH2"
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