Sony PDW-HD1500 Operation Manual page 38

Display
Block A Block B
NEXT xxx
PREV xxx
F.FWD
F.REV
PLAY
PLAY LOCK
REC
REC LOCK
JOG STILL
JOG FWD
JOG REV
SHUTTLE STILL
SHUTTLE (Speed)
VAR STILL
VAR (Speed)
TOP 0001/xxxx
END xxxx/xxxx
PREROLL
f Playback condition mark
One of three channel condition marks is displayed when
the ACCESS indicator is lit during any mode except
recording. The three channel condition marks indicate the
following three stages.
Display Name
Green
condition
Yellow
condition
Red
condition
a) Read errors will occur if the playback condition continues to deteriorate.
If a read error occurs, a "Disc Error!" alarm appears in the time data
display, the picture freezes, and audio is muted.
38
Superimposed Text Information
Operation mode
Cuing up to the first frame of the
next clip.
Cuing up to the first frame of the
current clip.
Fast forward search
Fast reverse search
Playback mode (servo unlocked)
Playback mode (servo locked)
Record mode (servo unlocked)
Record mode (servo locked)
A still picture in jog mode
Jog mode in forward direction
Jog mode in reverse direction
A still picture in shuttle mode
Shuttle mode
A still picture in variable mode
Variable speed mode
Cuing up to the first frame of the
first clip.
Cuing up to the last frame of the
last clip.
Cuing up during thumbnail search
Description
There is no problem with the
playback condition. This unit and
the disc can be used just as they
are. This corresponds to the
"green" channel condition
indicator of a VTR.
The playback condition has
deteriorated to some degree.
There are no read errors, but you
should take the action described
in the next section. This
corresponds to the "yellow"
channel condition indicator of a
VTR.
The playback condition has
deteriorated. There are no read
a)
errors, but you should take the
action described in the next
section. This corresponds to the
"red" channel condition indicator
of a VTR.
To display playback condition marks, set setup menu item
012 CONDITION DISPLAY ON VIDEO MONITOR to
"ena", and set setup menu item 005 DISPLAY
INFORMATION SELECT to "T&sta".
For details about operation, see "Basic menu operations"
(page 94).
Playback condition displays
You can be alerted in advance to deteriorating playback
conditions and to error correction rates which are
approaching their limits.
Deteriorating playback may be due to the following
causes.
• Scratches and dust on the disc surface
This includes fingerprints, dust from the air, tar from
cigarette smoke, and so on.
Scratches and soiling which occur before recording are
not a problem because they are registered in advance as
defects, and recording avoids them. However, scratches
and soiling which occur after recording can lead to
deteriorating playback conditions.
• Aging of disc recording layers
Over several decades, the recording layers of optical
discs can age and cause deteriorating playback
conditions.
You can use this function to check archival discs and
other discs which have been stored for extended periods,
so that you can take action before the deterioration
progresses further.
• Deteriorating laser diodes performance
The performance of the laser diodes used in optical
heads can worsen with age, leading to deteriorating
playback conditions.
For details, see "Digital hours meter" (page 114) about
this setting.
Refer to the Maintenance Manual for an approximate
guide to when it is time to replace optical heads.
To prevent playback conditions from
deteriorating
Pay attention to the following points when handling discs.
• Do not open disc cartridges and touch discs directly with
your hands.
• Do not store for long periods in locations which are
dusty or exposed to air circulated by fans.
• Do not store for long periods under high temperatures or
in locations exposed to direct sunlight.
If playback conditions have deteriorated
If a yellow or red playback condition mark appears, check
the following points.
Whether the disc displays the same playback condition
on other XDCAM devices: If so, the surface of the
disc may be dirty or scratched, or the performance of