Sony DVW-250 - Audio System Adjustment; PB Level;Distortion Adjustment; INPUT Level Adjustment

9-8
DVW-250/250P
9-4. Audio System Adjustment
9-4-1. PB Level/Distortion Adjustment
Preparation
• SL1-SL8/ADA-44 → OPEN (Head room : 20 dB)
• CH-3/4 OUT switch/connector panel → LINE
• Put the unit into the EE mode.
MODE switch/connector panel → PB/EE
Put the unit into STOP mode.
• On the setup menu, set PAGE and ITEM as follows.
PAGE : <AUDIO>
ITEM : INPUT 1/2 → ANA
ITEM : INPUT 3/4 → ANA
ITEM : EMPHASIS → OFF
• On the DIAG menu, set PAGE and ITEM as follows.
PAGE : <TEST><PROC1>
ITEM : AUDIO TEST → 1 (1 kHz, 0 dB)
Adjustment procedure
1. CH-1 PB Level Adjustment
Equipment : Audio level meter
Test point : AUDIO OUT CH-1 connector
Adjustment point : 1RV205 (C-2 : B) /ADA-44
Specification : +4.0 ±0.1 dBm (600 Ω)
2. CH-1 Distortion Adjustment
Equipment : Audio distortion meter
Test point : AUDIO OUT CH-1 connector
Adjustment point : 1RV201 (A-3 : B) /ADA-44
Specification : Minimum (0.03% or less)
3. Adjust the distortion for channnel-2 through 4 in the
same way.
Test point Adjustment point
PB level Distortion
CH-2 AUDIO OUT CH-2 1RV206 (D-2 : B) 1RV202 (A-3 : B)
CH-3 AUDIO OUT CH-3 1RV207 (E-2 : B) 1RV203 (A-2 : B)
CH-4 AUDIO OUT CH-4 1RV208 (E-2 : B) 1RV204 (A-2 : B)
4. Setting after adjustment
Reset switches and menu to the former positions.
9-4-2. INPUT Level Adjustment
Preparation
• SL1-SL8/ADA-44 → OPEN (Head room : 20dB)
• Put the unit into the EE mode.
MODE switch/connector panel → PB/EE
Put the unit into STOP mode.
• CH-3/4 OUT switch/connector panel → LINE
• CAMERA/LINE switches (CH-1 through CH-4) /
connector panel → LINE
• -60/-20/+4 dB switches (CH-1 through CH-4) /connector
panel → +4 dB
• AUDIO REC LEVEL ON/OFF/PRESET switches
(CH-1 through CH-4) /connector panel → PRESET
• AUDIO PB LEVEL knob (CH-1 through CH-4)
/front panel → fully clockwise (MAX)
• On the setup menu, set PAGE and ITEM as follows.
PAGE : <AUDIO>
ITEM : INPUT 1/2 → ANA
ITEM : INPUT 3/4 → ANA
ITEM : EMPHASIS → OFF
Adjustment procedure
1. CH-1 INPUT Level Adjustment
Inputs 1 kHz +4 dBu signal to the AUDIO IN CH-1
connector on the connector panel.
Equipment : Audio level meter
Test point : AUDIO OUT CH-1 connector
Adjustment point : 1RV1 (L-3 : B) /ADA-44
Specification : +10.0 ±0.1 dBm (600 Ω)
2. Adjust the distortion for channnel-2 through 4 in the
same way.
Test point Adjustment point
CH-2 AUDIO OUT CH-2 1RV2 (L-2 : B)
CH-3 AUDIO OUT CH-3 1RV3 (L-2 : B)
CH-4 AUDIO OUT CH-4 1RV4 (L-2 : B)
3. Setting after adjustment
• AUDIO PB LEVEL knob (CH-1 through CH-4) /
front panel → reference level position (+4 dBm)
• Reset switches and menu to the former positions.
9-4. Audio System Adjustment