Pioneer CX-3283 Руководство по эксплуатации - Страница 9
Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Автомобильный приемник Pioneer CX-3283. Pioneer CX-3283 32 страницы. Dvd mechanism module ls2
Печатать страницу
5
1.3.4 Focus Balance (FBAL) Adjustment
The function is to adjust a focus position so that RFENV will be maximized during Focus Close, Tracking Open
and Tracking Close.
1.3.5 DPD Amplitude Adjustment
The function is to adjust the gain at the analog stage so that the input signal of the DPD comparator of the TE generating
circuit of DVD will be constant.
1.3.6 Tracking Error Amplitude Learning
The function is to vibrate the lens in the direction of track and adjust the TE amplitude level so that it will be
190LSB at the digital equalizer input stage during Focus Close and Tracking Open.
1.3.7 Tracking Balance (TBAL) Adjustment
The function is to vibrate the lens in the direction of track, and using the Newton-Raphson method,
search for the balancing point where DC offset will be zero and adjust it during Focus Close and Tracking Open.
1.3.8 OFTR Adjustment
The function is to adjust the binarization threshold level to binarize an OFTR signal.
1.3.9 AS Normalization Adjustment
The function is to fine-tune the AS signal level so that it will be 64 LSB at the digital equalizer input stage after measuring
the AS signal level by the specified number of sampling and A/D converting it at ADSC during Tracking Close.
1.3.10 Focus Gain Adjustment / Tracking Gain Adjustment
The function is to adjust to the target gain intersection point by injecting disturbance into a Servo Loop during Tracking Close.
All the automatic adjustment results can be checked on the display in a test mode.
List of Automatic Adjustment Coefficients
State
Power On
F close
FE
F close (after TBAL)
TE
T close
AS
Caution: All coefficients are expressed in hexadecimal. The specification values for all production lines (during TP production) are used.
As for a disc used, it is TDV-582 for DVD and TCD-792 for CD.
1.4 CIRC BLOCK (MN2DS0018MA : IC1501)
The CIRC block incorporates the digital signal processing function for CD-DA and CD-ROM
(EFM demodulation and error correction) and the digital servo processing function for a Spindle Motor.
1.5 DRC BLOCK (MN2DS0018MA : IC1501)
The Digital Read Channel (DRC) is equipped with A/D converter, Digital Equalizer (DEQ), Adaptive
equalizer, Viterbi detector, Digital PLL circuit, RISC interface, and peripheral circuits to read signals of an optical disc.
5
6
Coefficient
VIN7 Offset
VIN8 Offset
VIN9 Offset
VIN10 Offset
FEPP(FEMAX-FEMIN)
AS MAX
Normalization Adjustment
TEPP(TEMAX-TEMIN)
Normalization Adjustment
F Gain
T Gain
Normalization Adjustment
6
7
DVD
_
05FB
0A17
_
05FB
0A17
-
06B1
-
06B1
_
2E18
1D84
6C08
Not specified
Not specified
_
1235
36B0
80E8
Not specified
_
0100
0400
_
0100
0400
Not specified
CX-3283
7
8
CD
_
08D3
_
08D3
_
A8CF
_
5B07
8
A
B
C
D
E
F
9
http://www.Datasheet4U.com