Figure 3-10: How The Time And Keykode Numbers Are Encoded In Various Time Code Modes - evertz 4025 Instruction Manual

OPERATION
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 0-10 gives a summary of the first six GEN ASSIGN
modes and their meanings. The 3 Line VITC standard uses 2
blocks of 3 lines each to encode the information. Figure 0-11
shows how the data is encoded in the 3 line VITC standard.
1 Pair of VITC
2 Pair of VITC
Figure 0-10: How the Time and KeyKode numbers are encoded in
LTC & First Line RDR 1
Second Line
Third Line RDR2
Figure 0-11: How the Time and KeyKode numbers are encoded in 3
See section 0 and 0 for a complete discussion on the use of multiple VITC
lines in the 4025.
When EDGE data is placed in the user bits, it may consist of a
variable length footage and frame number plus a numeric prefix.
See the FILM drop down menu items (See section 3.10 for a
complete definition of the edge number modes.)
Select RUN EDGE to free run the generator time and put the
film edge numbers into the user bits. You will be able to start
and stop the generator time using the HOLD key.
Model 4025 Film Footage Encoder Manual
VITC 1 &
LTC
TIME BITS
RUN
CINE
CINE
lines
RDR1
CINE
lines
RDR1
Standard VITC
various Time Code Modes
TIME BITS
KeyKode & Pulldown
Line VITC Standard Mode
VITC 1 & VITC 2
LTC TIME &
USER BITS USER BITS
EDGE
NUM
EDGE
EDGE
RDR2 +
KEYKODE
RDR2 +
KEYKODE
Special
format VITC
(Inverted
CRC)
USER BITS CRC
Set to zero Normal
Inverted
RDR2 UB Nibble
Inverted
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