Input Limiter Adjustment - Sony HDW-750 Maintenance Manual

10-2-7. Input Limiter Adjustment

Preparation
. Complete the setting as shown below by using the setup
menu.
MENU : MAINTENANCE
PAGE : 07*VTR MODE-2
ITEM : REAR1/WRR VR SEL → SIDE 1
ITEM : REAR2/WRR VR SEL → SIDE 2
. AUDIO SELECT switch CH1/inside panel
→ MANUAL
. AUDIO SELECT switch CH2/inside panel
→ MANUAL
. AUDIO LEVEL CH1 control knob/inside panel
→ Reference position
. AUDIO LEVEL CH2 control knob/inside panel
→ Reference position
. S102 (E-3)/FP-121 board (B side) → ON
. S202 (F-3)/FP-121 board (B side) → ON
. S504 (B-4)/FP-121 board (B side) → OFF
. S505 (A-4)/FP-121 board (B side) → OFF
. Connect sine wave of 1 kHz at +4 dBu to AUDIO IN
CH1 connector/rear panel.
. Connect sine wave of 1 kHz at +4 dBu to AUDIO IN
CH2 connector/rear panel.
Adjustment Procedure
1. Equipment : Audio analyzer
Measurement point : TP101 (D-3)/FP-121 board
(B side)
Confirm that the audio signal satisfies the specifica-
tions of _20.0 ± 0.1 dBu.
2. Equipment : Audio analyzer
Measurement point : TP201 (C-3)/FP-121 board
(B side)
Confirm that the audio signal satisfies the specifica-
tions of _20.0 ± 0.1 dBu.
3. Connect sine wave of 1 kHz at +24 dBu to AUDIO IN
CH1 connector/rear panel.
4. Connect sine wave of 1 kHz at +24 dBu to AUDIO IN
CH2 connector/rear panel.
HDW-750/750CE V1
5. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH1 (X) : Pin-2
CH1 (Y) : Pin-3
GND :
Adjustment point : 1RV150 (B-5)/FP-121 board
(B side)
9.20 ± 0.1 dBm (600 Z)
Specifications :
6. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH2 (X) : Pin-4
CH2 (Y) : Pin-5
GND :
Adjustment point : 1RV153 (B-5)/FP-121 board
(B side)
9.20 ± 0.1 dBm (600 Z)
Specifications :
10-2. Audio System Alignment
Pin-1
Pin-1
10-5