4-10 (E)
MAV-555
Adjustment Procedure
1.
Digital Audio Signal Generator : Generate the sine
wave having amplitude from SYSTEM TWO :
_
20
dB FS at frequency :1 kHz. (When emphasis has been
set, set Emphasis OFF.)
2.
Press the R1 button of the PORT SELECT block on
the meter panel.
3.
Set R1 port into record mode.
4.
Select P1 and P2 of the PORT SELECT block in
accordance with the port to be adjusted.
5.
Playback the material that is recorded by step 3.
6.
Equipment : Analog Audio Measuring Equipment
Test point : OUTPUT-1 (CH-1)/CN-1831 board
(BKMA-570)
Adj. point :
1
RV101 (C-2)/DA-136 board
Spec. :
+
3.99
±
0.03 dBm (terminated with 600
Z
).
Adjust CH-2 to CH-4 in the same way as CH-1
CH-2
1
RV201 (C-2)/DA-136 Board
CH-3
1
1
1
1
1
RV301 (F-2)/DA-136 Board
CH-4
1
1
1
1
1
RV401 (F-2)/DA-136 Board
n
Set the filter of the Analog Audio Measuring Equip-
ment to the following setting.
High Pass Filter : 10 Hz
Low Pass Filter : 80 kHz
7.
Set the R1 port P1 (or P2) of the MAV-555 to the STOP mode.
8.
Return the AUDIO LEVEL CONTROLs of the
respective channels on the meter panel, to the original
positions before adjustment.
9.
Turn off the main power.
10. Return the head room level and the audio output level
to the same settings as those before adjustment.
11. Remove the extension board and insert the DA-136
board to the specified slot of the MAV-555.
4-5. DA-136 Board Adjustment
4-5. DA-136 Board Adjustment
4-5-1. Audio Level Adjustment
n
Allow 30 minutes or more of warm up of MAV-555 and
the measuring equipment before starting adjustments.
Preparation
1.
Set the headroom level.
COR101 (C-3), COR201(D-3), COR301 (E-3), and
COR401 (G-3)/DA-136 Board
→
20 dB
2.
Set the output level.
COR102 (B-2), COR202 (D-2), COR302 (E-2), and
COR402 (G-2)/DA-136 Board
→
+
4 dBm/terminated
with 600
Z
3.
Extend the DA-136 board using an extension board.
4.
Make wiring as shown in the connection diagram in
accordance with the ports that require adjustment.
5.
Turn on the main power.
6.
Press the R1 button of the PORT SELECT block on
the meter panel.
7.
Audio Input Select (CH-1 to CH-4)/meter panel
→
AES/EBU.
8.
AUDIO LEVEL CONTROL/meter panel
→
PRESET.
9.
Press the P1 or P2 button of the Port Select block of
the meter panel according to the port to be adjusted.
10. Audio Level Control/meter panel
→
PRESET.
Connection
SYSTEM TWO
AES/EBU Out
Analog Input
Ref Input
Ref signal
AUDIO IN (AES/EBU)
R1-CH1/2
AUDIO IN (AES/EBU)
R1-CH3/4
OUTPUT-1
CH1/2/3/4
MAV-555
TSG-422
BKMA-570
COR401
COR301
COR201
COR101
COR402
COR302
COR202
COR102
1
1
1
1
RV401
RV301
RV201
RV101
1
2
3
4
5
6
A
B
C
D
E
F
G H
DA-136 board (A side)
