Ad Conversion Level Adjustment (Ad-23 Board) - Sony PCM-1630 Operation And Maintenance Manual

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3-3. AD CONVERSION LEVEL ADJUSTMENT
(AD-23 BOARD)
Equipment: Distorsion Meter
AF Oscillator
Oscilloscope
Connection:
EX-71 Extension Board
75D. BNC Cable
EX-71 extension board
RV1 01 (CH- 1)
AD-23 board
REC {
LEVEL
ADJUST
RV201 (CH-2)
Condition:
RV102 RV103
()()
RV202 RV203
()()
PCM-1630
REFERENCE level 4 dBs (0 dBs
=
0.775 Vrms),
Head room 20 dB
Switch Settings:
Front Panel SW
ENC IN SW: ANALOG
DA
IN
SW:
INT
PB
MODE: A
REF MARKER: -20 dB
AD-23 Board SW
EMP SW (SWl): OFF
DITHER SW (SW2): OFF
Adjustment Location
REC {
LEVEL
ADJUST
() RV101
() RV201
cfC]
SW1
RV102 ()
0 ()
RV103
TP103
R V202 ()
0 ()
R V203
TP203
AD-23 BOARD -component side-
3-2
ANALOG IN
CH-1 or CH-2
AF oscillator
ANALOG OUT CH-1 or CH-2
COMPOSITE
DIGITAL IN A
COMPOSITE
DIGITAL
OUT 1 or 2
1§1 SW2
Distortion
meter
PCM-1 630 (UC/AEP)