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3-6. DEC-98 Board Adjustment
3-6-1. VCO Adjustment
Preparation
. Short jumper JP1001 (J-11) on the DEC-98 board using
a shorting pin.
. Connect as shown in the figure.
MAV-70
Oscilloscope
CH-2
TP
IN
Adjustment procedure
Equipment : Frequency counter and oscilloscope
Test point : TP1004 (J-9)/DEC-98 board
Adj. point : 1RV1001 (J-10)/DEC-98 board
27.0 ± 0.1 MHz
Spec. :
11
10
9
8
7
RV1001
1
TP1004
JP1001
ENC-47 board (A side)
MAV-70
Frequency counter
CH-2
OUT
6
5
4
3
2
1
3-7. DA-134 Board Adjustment
3-7-1. Audio Output Level (CH-1) Adjustment
Preparation
. S301 (E-3)/DA-134 board → 20
. S303 (E-1)/DA-134 board → +4
Adjustment procedure
1. Input a _20 dB FS signal of 1 kHz from the AES/EBU
IN connector on the ENC-47 or ENC-51 board and
record it.
2. Reproduce the recorded signal.
3. Equipment : Oscilloscope or audio level meter
Test point : AUDIO OUT 2 connector/DEC-98 board
(in 600 Z load)
Adj. point : 1RV301 (E-2)/DA-134 board
3470 ± 40 mV p-p (4.0 ± 0.1 dBm)
Spec. :
A
B
C
D
12
11
10
9
E
F
G
H
J
K
DA-134 board (A side)
3-6. DEC-98 Board Adjustment
3-7. DA-134 Board Adjustment
3470 ±40 mV p-p
8
7
6
5
4
3
RV301
1
S301
S303
2
1
A
B
C
D
E
F
G
3-9 (E)
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