Pioneer PRV-9000 Supplementary Manual

P I B
PIB # 190001
RODUCT NFORMATION ULLETIN
PRV-9000 –Time Code Support
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VERVIEW
SMPTE (acronym for Society of Motion Picture and Television Engineers) adopted two time code
standards, Longitudinal Time Code (LTC) and Vertical Internal Time Code (VITC). Both time code
formats were created for accurately locating exact positioning points of video and audio.
In many professional videotape formats, LTC is recorded in a separate longitudinal audio track. The
disadvantage of LTC is when the playback device is in stop, search or scan mode there is no LTC
signal present. The time code data contains the hours, minutes, seconds and frame numbers.
Because LTC can also be generated and recorded as an audio signal, the Pioneer PRV-9000 can
record LTC as a discrete and separate audio signal on one of the two unbalanced audio inputs.
To include a time code, verify that the source material includes either LTC or VITC signal. If none is
present, record LTC directly from a LTC generator.
If the source material contains only a VITC signal, a VITC to LTC translator must be used.
For best results, record a sequence in DVD Video mode rather than in VR mode. If the time-coded
DVD recording is in Video mode, the disc can be played back in most DVD Video players.
Recording LTC
As mentioned above, the PRV-9000 uses an audio channel to record the LTC signal, just as an
analog audio signal is recorded. Connect the LTC signal to either audio input channel. The
remaining audio channel is available for recording a monaural analog audio signal.
VTR with Time Code Track
When recording from a VTR that contains a time code (LTC) track, impedance matching
transformers are required. Connect the VTR's time code output to one of the PRV-9000's audio
inputs using an impedance matching transformer. If audio is required, connect one of the VTR's
audio channels using an impedance matching transformer to the remaining audio channel on the
PRV-9000.
VITC
When recording from source that contains a VITC, first connect the source video output to the input
on the VITC to LTC translator. Two impedance matching transformers may be required with one
transformer to convert the source balanced audio signal to an unbalanced input signal for the PRV-
9000. The other transformer connects the VITC and the LTC translator output to the audio input
channel of the PRV-9000. The video signal from the source connects to the PRV-9000's video input,
associated with audio input.
created: JB on 22 Oct 2001 Page 1 of 2
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