Sony DSR 250 Operating Instructions - Page 156

- Additional Information - Compatibility of DVCAM and DV formats DVCAM format is developed as a more reliable and higher end format than consumer DV format. Here explained are the differences, compatibility, and limitations on editing about DVCAM and DV formats. Differences between DVCAM and DV formats Item Track pitch Audio sampling frequency Audio recording mode 1) Time code DVCAM DV 15 µm 10 µm 12 bit: 32 kHz 16 bit: 48 kHz 12 bit: 32 kHz 16 bit: 32 kHz, 44.1 kHz, 48 kHz Lock mode Unlock mode Drop frame system or Drop frame system only Non-drop frame system (SMPTE time code) 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 consumer DV format adopts, the two sampling frequencies are independent. Therefore, lock mode is more effective than unlock mode in digital processing and smooth transition during audio editing. DVCAM and DV cassettes The recording format of picture is defined according to recorder's format as described below. Recorder's format Cassette's format Recording format DVCAM DVCAM DVCAM DV DVCAM DV DVCAM DV DV DV This digital camcorder complies with DVCAM format. Though DV cassettes can be used for recording, we recommend you to use DVCAM cassettes to get the most out of high reliability of DVCAM format. The recording time of DV cassettes is 2/3 shorter than that indicated on the DV cassettes. Compatibility on playback Some tapes cannot be played back on DVCAM or DV video equipment. Tape On DV video equipment On DVCAM video equipment DV-formatted Can be played back Can be played back (only when recorded in SP mode) DVCAM-formatted Some equipment may be able to play back Can be played back 156