Sony DSR 250 Operating Instructions - Page 107

Editing Setting time values Drop-frame mode In the NTSC standard, the time code value is based on 30 frames per second, but the exact video frame frequency is in fact 29.97 frames per second and the real time, or 18 frames per 10 minutes. Drop-frame mode corrects for this by skipping two frame counts at the beginning of every minute which is not a multiple of ten. In non-drop-frame mode, however, no frame counts are omitted, and there is a gradual deviation of the time code from real time. Making the time code continuous at back space editing Set TC MAKE to REGEN in the menu settings to make the time code continuous when the recording has been interrupted or when the cassette tape has been removed from the camcorder between shootings. When the camcorder is in recording pause mode, the recorded time code is read from the tape and synchronized to the internal time code generator. Once you set TC MAKE to REGEN in the menu settings Even if TC RUN is set to FREE RUN in the menu settings, the running mode is automatically set to REC RUN. 107