Sony Betacam SX DNW-A100 Maintenance Manual page 254

6-2. APR-12 Board Replacement
3. LAU PB Frequency Response Adjustment (OXIDE)
Measuring equipment: Audio analyzer (dB ratio measurement mode, 80 kHz LPF)
CH1 adjustment
(1) Connect the input of audio analyzer to AUDIO OUTPUT CH1 connector.
However, when the optional kit BKNW-105 is equipped in the DNW, connect the audio analyzer to
MONITOR OUTPUT L connector.
(2) Playback the following specified portions (_20 VU) of the alignment tape CR8-1A or CR8-1A PS,
and perform the adjustments and checks.
(DNW-A100/A50/A45: CR8-1A, DNW-A100P/A50P/A45P: CR8-1A PS)
Playback portion
5:00 to 5:55 (1 kHz, _20 VU)
6:00 to 6:25 (40 Hz, _20 VU)
6:30 to 6:55 (7 kHz, _20 VU)
7:00 to 7:25 (10 kHz, _20 VU)
7:30 to 7:55 (15 kHz, _20 VU)
n
If the specification for RV500 adjustment is not satified, readjust after changing the setting of S500/
APR-12(A-1).
CH2 adjustment
(1) Connect the input of audio analyzer to AUDIO OUTPUT CH2 connector.
However, when the optional kit BKNW-105 is equipped in the DNW, connect the audio analyzer to
MONITOR OUTPUT R connector.
(2) Playback the following specified portions (_20 VU) of the alignment tape CR8-1A or CR8-1A PS,
and perform the adjustments and checks.
(DNW-A100/A50/A45: CR8-1A, DNW-A100P/A50P/A45P: CR8-1A PS)
Playback portion
5:00 to 5:55 (1 kHz, _20 VU)
6:00 to 6:25 (40 Hz, _20 VU)
6:30 to 6:55 (7 kHz, _20 VU)
7:00 to 7:25 (10 kHz, _20 VU)
7:30 to 7:55 (15 kHz, _20 VU)
n
If the specification for RV600 adjustment is not satified, readjust after changing the setting of S600/
APR-12(G-1).
6-16
Specifications[dB]
DNW-A100/A50/A45 DNW-A100P/A50P/A45P
Measured value makes Measured value makes
0 dB (reference). 0 dB (reference).
+0.7
C.V. C.V.
_1.7
C.V. ± 0.3 C.V. ± 0.4
C.V. ± 0.3 C.V. ± 0.4
+0.3
C.V. C.V.
_1.0
The correction values (C.V.) are given on the label of the alignment tape.
Specifications[dB]
DNW-A100/A50/A45 DNW-A100P/A50P/A45P
Measured value makes Measured value makes
0 dB (reference). 0 dB (reference).
+0.7
C.V. C.V.
_1.7
C.V. ± 0.3 C.V. ± 0.4
C.V. ± 0.3 C.V. ± 0.4
+0.3
C.V. C.V.
_1.0
The correction values (C.V.) are given on the label of the alignment tape.
Adjustment point
_
+0.7
(Check only)
_1.7
1RV501/APR-12(A-1)
(Check only)
_1.0
1RV500/APR-12(A-1)
_1.7
Adjustment point
_
+0.7
(Check only)
_1.7
1RV601/APR-12(G-1)
(Check only)
_1.0
1RV600/APR-12(G-1)
_1.7
DNW-A100/A50/A45
DNW-A100P/A50P/A45P