Panasonic AJ-D93MC, Service Manual

Page: 59 / 180

INF-46
Item Set value
No.
SUPER
DISP.
No.
SUPER
DISP.
Setting contents and
outline function explanation
BACK
-UP
Remarks
P16
Q16
R16
FLT SEN 0
1
2
3 0
1
2
3
The detection sensitivity for the fault detection function is set in four
levels.
A fault status is detected when a status where a normal signal can
not be detected consecutively for 5 tracks over the following track
values.
0: 1/2, 1: 3/4, 2: 7/8, 3: 15/16
Yes Factory use only
Do not change any setting
P17
Q17
R17
PLLREV 0
1 SLOW
FAST
The compensation speed in PLL frequency compensation mode is
set in two levels
Yes Factory use only
Do not change any setting
P18
Q18
R18
PLL PHS 0
|
9
|
31
0
|
9
|
31
In the PLL response speed setting, mainly the phase pull-in speed is
controlled. The response speed becomes faster with larger values.
Yes Factory use only
Do not change any setting
P19
Q19
R19
REV LEV 0
1
2
3 0
1
2
3
The strength of the frequency pull-in operation of the PLL phase
comparison characteristic expansion function is controlled in four
levels. The action is weakest with 0 and strongest with 3.
When the data acquisition ratio at the time of special playback is bad,
it can be improved by controlling this parameter.
Yes Factory use only
Do not change any setting
P20
Q20
R20
PLL FRQ
0
|
8
|
31
0
|
8
|
31
The setting of the PLL response speed controls mainly the frequency
pull-in speed. The response becomes faster with larger values.
Yes Factory use only
Do not change any setting
P21
Q21
R21
MONI LIM W
0
|
28
|
127
0
|
28
|
127
Setting of the frequency offset tolerance value for PLL frequency
monitor control
The actual tolerance range in regard to the reference frequency is
(set value)/10.24%.
Yes Factory use only
Do not change any setting
P22
Q22
R22
MONI LIM N
0
|
28
|
127
0
|
28
|
127
Setting of the frequency offset tolerance value for PLL frequency
monitor control
The actual tolerance range in regard to the reference frequency is
(set value)/10.24%.
Yes Factory use only
Do not change any setting
P23
Q23
R23
TH EYE
0
|
110
|
255
0
|
110
|
255
Setting of the threshold value for judging the signal quality after
equalization
The judgment result for the signal quality is used for adaptive
equalization, PLL, fault detection function, and other control.
Yes Factory use only
Do not change any setting
P24
Q24
R24
TH ULK 0
|
98
|
255
0
|
98
|
255
Setting of the threshold value for judging the signal quality after
equalization
The judgment result for the signal quality is used for adaptive
equalization, PLL, fault detection function, and other control.
Yes Factory use only
Do not change any setting
P25
Q25
R25
TH ENV 0
|
16
|
255
0
|
16
|
255
Setting of the threshold value for the envelope detection signal
The envelope detection signal is used for adaptive equalization filter,
PLL, and AGC hold control.
Yes Factory use only
Do not change any setting
P26
Q26
R26
PLL LIM
0
|
7
0
|
7
In the PLL response speed setting, mainly the phase pull-in speed is
controlled.
Yes
Factory use only
Do not change any setting
P27
Q27
R27
VCO L
0
|
512
|
1023
0
|
512
|
1023
Yes Use for electrical adjustment
P28
Q28
R28
VCO R
0
|
512
|
1023
0
|
512
|
1023
Setting of the initial value of the output voltage adjusting the VCO
center frequency
Adjustment is performed automatically in standby mode, but the time
required for automatic adjustment can be reduced by setting this
value in advance to a suitable value.
The automatically adjusted value is read out and set.
• Read-out is possible only at the time of EJECT, STANDBY-OFF.
Operation:
• At the time of P53, Q53: IC READ = SINGLE
Read-out and display are performed each time the SET
button is pressed.
• At the time of P53, Q53: IC READ = CONT
Read-out and display are performed once every second.
Yes Use for electrical adjustment
P29
Q29
R29
T L1 3A
-31
|
0
|
31
-31
|
0
|
31
The initial values for six of the seven tap coefficients of the adaptive
equalization filter, excluding the fixed center tap, are set for the L1
head. The tap coefficient values after adaptive equalization filter
convergence at the time of standard tape playback are read out and
set.
Yes Use for electrical adjustment