3-112
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
3-10-2. VCO Free-running Frequency
Automatic Adjustment
Preparing tool
.
Analog composite video monitor
n
This video monitor is for menu displaying. Be sure to
connect it to VIDEO OUTPUT COMPOSITE 3 (SU-
PER) connector.
Preparation
1. Check the setting on the sub control panel.
CHARACTER switch
8
ON
2. Check that the VTR has warmed up.
Before starting the adjustment, warm up the VTR through
the power for 10 minutes or more.
Automatic Adjustment
1.
To enter the maintenance mode, press S1101(G-1) on
the SS-63 board.
2.
Enter A23 : CP VR in the maintenance mode.
3.
Enter the following specified sub menu.
For SDI output:
A231 : SDI ENC VR
For SDTI output: A232 : SDTI ENC VR
For SDI input:
A233 : SDI DEC VR
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In this time, the adjustment mode is the manual, and
“Manual” is displayed on the video monitor.
(In the time data display area of the VTR, “MANU-
AL” is displayed.)
4.
Change the adjustment mode to the automatic.
(Change the massage to “Auto (Push SET button)”.)
n
How to change the adjustment mode from the manual
to the automatic:
When there is the
*
-mark to ahead of “Manual”, turn
the search dial in FORWARD (
2
) direction while
pressing the JOG button.
(In the time data display area, “PUSH SET” is dis-
played.)
5.
To execute the automatic adjustment, press the SET
button once on the lower control panel.
.
The displayed message on the video monitor
changes to “Auto Adjusting ...”. The displayed data
value also changes.
The display in the time data display area does not
change. (“PUSH SET” in it remain displayed.)
6.
Confirm the automatic adjustment completion on the
video monitor.
.
Message “Auto Adjust Complete” is displayed
when the automatic adjustment is completed.
n
If message “Auto Adjust Failure” is displayed, refer to
the “For Automatic Adjustment Failure” below.
7.
To exit the sub menu, press the MENU button once on
the lower control panel.
n
Go to step 3 in order to perform other VCO free-
running frequency adjustment.
8.
To exit the menu of A23 : CP VR, press the MENU
button once again.
Data save (store the adjusted data)
n
Do not save the adjustment data if the automatic
adjustments was not completed normally.
9.
Enter A2F : NV-RAM CONTROL, then execute
“SAVE ALL ADJUST DATA”.
.
Message “Save Complete” is displayed on the video
monitor when this data save is completed normally.
n
When loading the previous data without save the
current adjusted data, execute “ALL DATA PREVI-
OUS”.
10. To exit the maintenance mode, press the MENU
button four times.
For Automatic Adjustment Failure
Confirm that no abnormality exists in the harness and flat
cable connecting the CP-297 board and MB-647 board.
If no abnormality is found in the connection, the CP-297
board or DIF-42 board is considered to be defective.
3-10. SDI/SDTI I/O Lines Adjustment (CP-297 Board)
3-10-2. VCO Free-running Frequency Automatic Adjustment
