Sony DNW-A75 Maintenance Manual page 145

A031 : DRIVE GAIN
This menu is used to adjust the drive gain of an analog DT
susyem for analog Betacam playback. Only the automatic
adjustment is described below.
m
. It is necessary to perform this adjustment in both 525/60
and 625/50 systems.
. It is required the following alignment tape located in the
beginning of color-bar portion in advance.
To execute the adjustment
(1) Prepare the following alignment tape located in the
beginning of the color-bar portion.
In 525/60 system: CR5-1B (TC 00:00:14:00) or
CR5-2A (TC 00:00:00:00)
In 625/50 system: CR5-1B PS (TC 00:00:14:00) or
CR5-2A PS (TC 00:00:00)
(2) Insert the cassette tape into this unit.
(3) Check to see that an * mark is assigned to "Start auto
adjust" on the superimposed display.
. If the * mark is not assigned to "Start auto adjust",
turn the search dial to set the mark to "Start auto
adjust".
(4) Press the SET button once.
. On pressing it, a message "Set VARIABLE x 3"
will be displayed on the superimposed display.
(5) Press the VAR button to enter the VARIABLE mode.
. The VAR button lights.
(6) Turn the search dial in the FORWARD (2) direction
to enter the VARIABLE +3 times normal speed mode.
. On entering the VARIABLE +3 times normal speed
mode, the automatic adjustment is initiated.
. During the automatic adjustment, a message
"ADJUSTING......" will be displayed.
(7) Check the result of checking.
. On completing the automatic adjustment, a message
"ADJUST COMPLETE" will be displayed.
. If the automatic adjustment fails, a message "#
ADJUST INCOMPLETE #" is displayed. In this
case, refer to "When failing the automatic adjust-
ment" on the next page.
(8) To exit the menu, press the MENU button once.
(9) To save the adjustment data into the NV-RAM of a DT
system, execute the SAVE ANALOG DT DATA in
A032 : DATA SAVE menu.
n
The alignment tape will automatically be ejected in
returning to the A0 : SERVO/DT ADJUST mode picture.
DNW-A75/A75P
Example of display and operation
ANALOG DT ADJUST
A031:DRIVE GAIN
MODE : VARIABLE x 3
*
Start auto adjust
Ach manual adjust
Bch manual adjust
Ach:0280 Bch:002A0
(1)(2) 0
Insert the alignment tape
(3) 0
DIAL (2)
[SET]
(4) 0
ANALOG DT ADJUST
A031:DRIVE GAIN
MODE : VARIABLE x 3
*
Start auto adjust
Ach manual adjust
Bch manual adjust
Set VARIABLE x 3
Ach:0280 Bch:002A0
0 [VAR], DIAL (2)
(5)(6)
ANALOG DT ADJUST
A031:DRIVE GAIN
MODE : VARIABLE x 3
*
Start auto adjust
Ach manual adjust
Bch manual adjust
ADJUSTING......
Ach:0280 Bch:002A1
0
ANALOG DT ADJUST
A031:DRIVE GAIN
MODE : VARIABLE x 3
*
Start auto adjust
Ach manual adjust
Bch manual adjust
ADJUST COMPLETE
Ach:0280 Bch:002A0
(7) 0
Check
[JOG]
(8) 0
[MENU]
(9) 0
(10) 0
Data save
*
A032:DATA SAVE
4-2. TAPE Maintenance Mode (M0)
4-2-8. ANALOG DT ADJUST Mode (A02)
4-55