Selecting What Data Goes In To The Time And User Bits - evertz 4025TR Instruction Manual

GEN ASSIGN
RUN EDGE
CINE NUM
CINE EDGE
LRDR EDGE
CINE VRDR+KEYKODE
LRDR VRDR+KEYKODE
CINE VRDR 3 LINE
LRDR VRDR 3 LINE
EXTENDED MODE
OPERATION
3.3.1

Selecting What Data Goes In To The Time And User Bits

GEN ASSIGN Is used to determine what data is in the time and user bits of
the generator. The left column shows what data will be placed
into the time bits of the LTC and primary VITC generators. The
next column shows what data will be put into the user bits of the
LTC and primary VITC generators. The third column shows
what data will be put into the secondary VITC generator.
The first four modes encode only a portion of the KeyKode
number. These modes should only be used in situations where
you need to maintain compatibility with the timecode modes of
the model 4015 Film Footage Encoder. The next two modes
place the complete film key number read from a KeyKode
reader into a second set of VITC lines (known as the secondary
VITC lines.) The secondary VITC generator is turned off when
the third column is not shown. The next 2 modes use the 3-line
VITC standard for encoding Film information. This standard has
been agreed upon by a number of manufacturers and uses 2
blocks of 3 lines each to encode the information.
Figure 3-10 gives a summary of the first six GEN ASSIGN
modes and their meanings. Figure 3-11 shows how the data is
encoded in the 3-line VITC standard.
1 Pr of VITC lines
2 Pr of VITC lines
Figure 3-10: How the Time and KeyKode numbers are encoded
LTC & First Line
Second Line
Third Line
Figure 3-11: How the Time and KeyKode numbers are encoded
Model 4025TR Film Footage Encoder Manual
VITC 1 &
LTC
TIME BITS USER BITS
RUN EDGE
CINE NUM
CINE EDGE
RDR1* EDGE
CINE RDR2*
RDR1* RDR2*
Standard VITC
in various Time Code Modes
TIME BITS USER BITS
RDR1* Set to zero
KeyKode & Pulldown
RDR2* RDR2* UB
in 3 Line VITC Standard Mode
VITC 1 & VITC 2
LTC TIME & USER
BITS
+ KEYKODE
+ KEYKODE
Special
format VITC
(Inverted CRC)
CRC
Normal
Inverted
Nibble Inverted
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