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4-6. AD-160 Board Adjustment
4-6. AD-160 Board Adjustment
m
. Allow 30 minutes or more of warm up of MAV-555 and
measurement equipment before starting adjustments.
. Be sure that the EM-1 Board has already been completed
of its adjustment.
4-6-1. Analog Audio Offset Adjustment
Preparation
. AUDIO REC/PB level control knobs (CH-1 to CH-4)/
meter panel → PRESET
. COR501 (C-2)/AD-160 board → +4
. COR502 (C-2)/AD-160 board → 20
. COR601 (E-2)/AD-160 board → +4
. COR602 (E-2)/AD-160 board → 20
. COR701 (H-2)/AD-160 board → +4
. COR702 (G-2)/AD-160 board → 20
. COR801 (J-2)/AD-160 board
. COR802 (K-2)/AD-160 board → 20
. AUDIO INPUT CH-1 LEVEL switch/BKMA-570
. AUDIO INPUT CH-2 LEVEL switch/BKMA-570
. AUDIO INPUT CH-3 LEVEL switch/BKMA-570
. AUDIO INPUT CH-4 LEVEL switch/BKMA-570
. S300-1 (H-1)/EM-1 board
Setting the setup menu
. Set the setup menu "010-525/625" to "525/60".
. Set the setup menu "804 AUDIO HEAD ROOM" to "20 dB".
. Set the setup menu "882 EMPHASIS ON/OFF R1" to
"OFF". (When the R1 port is used)
. Set the setup menu "883 EMPHASIS ON/OFF R2" to
"OFF". (When the R2 port is used)
A
B C
D E
1
2
3
4
5
6
7
8
4-14 (E)
→ +4
→ HIGH/ON (600 Z)
→ HIGH/ON (600 Z)
→ HIGH/ON (600 Z)
→ HIGH/ON (600 Z)
→ ON
F G H
J
K
L
S300
EM-1 board (A side)
Adjustment Procedure
CH-1 adjustment
1. Short TP502 (B-3) /AD-160 board and E501 (B-3) /
AD-160 board using a shorting clip.
2. Connect and setup an oscilloscope as follows.
CH-1 :
TP408 (E-4) /AD-160 board, DC 5 V/
DIV
GND :
E401(F-4)/AD-160 board
CH-2 :
TP407 (C-4) /AD-160 board, DC 5 V/
DIV
2 us/DIV
TIME :
CH-2, +slope
TRIG :
BW Limit : ON (20 MHz)
3. Equipment : Oscilloscope
Test point : TP408 (E-4)/AD-160 board
Adj. point : 1RV504 (D-3)/AD-160 board
Spec. :
As specified by the waveform of TP408
(AUDIO CH-1) shown on the next page.
4. Remove the shorting clip from AD-160 board TP502
and E501.
CH-2 adjustment
1. Short TP602 (F-3) /AD-160 board and E501 (B-3) /
AD-160 board using a shorting clip.
2. Connect and set an oscilloscope as follows.
CH-2, _slope
TRIG :
3. Equipment : Oscilloscope
Test point : TP408 (E-4)/AD-160 board
Adj. point : 1RV604 (D-3)/AD-160 board
Spec. :
As specified by the waveform of TP408
(AUDIO CH-2) shown on the next page.
4. Remove the shorting clip from AD-160 board TP602
and E501.
CH-3 adjustment
1. Short TP702 (G-3) /AD-160 board and E801 (L-3) /
AD-160 board using a shorting clip.
2. Connect and set an oscilloscope as follows.
CH-1 :
TP409 (J-4) /AD-160 board
TRIG :
CH-2, +slope
3. Equipment : Oscilloscope
Test point : TP409 (J-4)/AD-160 board
Adj. point : 1RV704 (J-3)/AD-160 board
Spec. :
As specified by the waveform of TP409
(AUDIO CH-3) shown on the next page.
4. Remove the shorting clip from AD-160 board TP702
and E801.
MAV-555
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