Sony DSR 25 Operating Instructions - Page 76

Appendix, Compatibility of DVCAM and DV Format

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Compatibility of DVCAM and DV Format Appendix Appendix Compatibility of DVCAM and DV Format The DVCAM format was developed as a more reliable and higher end format than the consumer DV format. Here we explain the DVCAM and DV formats: the differences, compatibility and limitations on editing. Differences between DVCAM and DV format Item DVCAM DV Track pitch 15 µm 10 µm Audio sampling 12 bit: 32 kHz frequency 16 bit: 48 kHz 12 bit: 32 kHz 16 bit: 32 kHz, 44.1 kHz, 48 kHz 2) Audio recording Lock mode mode 1) Unlock mode Time code system NTSC: SMPTE time code (DF/ NDF, including user bits) Drop frame mode (NTSC) without user bits PAL: EBU time code (including user bits) 1) There are two modes for audio recording; Lock mode and Unlock mode. In Lock mode, the sampling frequencies of audio and video are synchronized. In Unlock mode, which the consumer DV format adopts, the two sampling frequencies are independent. The lock mode maintains high compatibility with the higher formats and is more effective than unlock mode in digital processing and smooth transition during audio editing. 2) This unit cannot record in DV format with 16 bit - 32 kHz or 44.1 kHz. DVCAM and DV cassettes Both DVCAM and DV cassettes can be used on DVCAM or DV video equipment. The recording format is defined according to recorder format as described below. Recorder format Cassette type DVCAM DVCAM (If REC MODE on DV the VTR SET menu of this unit is set to DVCAM.) DV DVCAM (If REC MODE on DV the VTR SET menu of this unit is set to DV SP.) Recording format DVCAM DV • This unit can record in DV format. (SP mode only) • This digital videocassette recorder complies with the DVCAM format. Though DV cassettes can be used for recording, we recommend that you use DVCAM cassettes. Particularly when you use a Mini-DV cassette that is longer than 60 minutes, do not play back the tape repeatedly (i.e., when editing). Set STILL TIME to 1 MIN or 30 SEC (See page 66 (GB)). • If you use a DV cassette to record images in the DVCAM format, the recording time will be reduced to 2/3 of the time indicated on the DV cassette. 76 (GB) Appendix

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76
(GB)
Appendix
Appendix
Compatibility of DVCAM and DV Format
The DVCAM format was developed as a more reliable
and higher end format than the consumer DV format.
Here we explain the DVCAM and DV formats: the
differences, compatibility and limitations on editing.
Differences between DVCAM and DV
format
1) There are two modes for audio recording; Lock mode and
Unlock mode. In Lock mode, the sampling frequencies of
audio and video are synchronized. In Unlock mode,
which the consumer DV format adopts, the two sampling
frequencies are independent. The lock mode maintains
high compatibility with the higher formats and is more
effective than unlock mode in digital processing and
smooth transition during audio editing.
2) This unit cannot record in DV format with 16 bit – 32 kHz
or 44.1 kHz.
DVCAM and DV cassettes
Both DVCAM and DV cassettes can be used on
DVCAM or DV video equipment. The recording
format is defined according to recorder format as
described below.
• This unit can record in DV format. (SP mode only)
• This digital videocassette recorder complies with the
DVCAM format. Though DV cassettes can be used
for recording, we recommend that you use DVCAM
cassettes. Particularly when you use a Mini-DV
cassette that is longer than 60 minutes, do not play
back the tape repeatedly (i.e., when editing). Set
STILL TIME to 1 MIN or 30 SEC
(See page 66
(GB))
.
• If you use a DV cassette to record images in the
DVCAM format, the recording time will be reduced
to 2/3 of the time indicated on the DV cassette.
Item
Track pitch
Audio sampling
frequency
Audio recording
mode
1)
Time code
system
DVCAM
15
µ
m
12 bit: 32 kHz
16 bit: 48 kHz
Lock mode
NTSC: SMPTE
time code (DF/
NDF, including
user bits)
PAL: EBU time
code (including
user bits)
DV
10
µ
m
12 bit: 32 kHz
16 bit: 32 kHz,
44.1 kHz, 48 kHz
2)
Unlock mode
Drop frame mode
(NTSC) without user
bits
Recorder format
DVCAM
(If REC MODE on
the VTR SET menu
of this unit is set to
DVCAM.)
DV
(If REC MODE on
the VTR SET menu
of this unit is set to
DV SP.)
Cassette type
DVCAM
DV
DVCAM
DV
Recording format
DVCAM
DV