Installation & Operation Manual TCC70XS
Page 72
TC Reader
Current status of the “general” reader (
Read
):
source
Feedback about that special time code reader which currently transfers
data to the “general” reader:
ATC_VITC
/
ATC_LTC
/
D-VITC
/
LTC
time
Current ti
me information of the “general” reader. This time display should
not be used for a precise comparison of time, because this display may be
delayed up to two seconds due to internal data transfer.
user
Current user data of the “general” reader.
frame rate
C
urrent frame rate of the “general” reader.
flags:
The six flag bits are indicated which are included in each time code word.
The meaning of each bit depends on the type of time code (LTC or VITC)
as well as on the frame rate. The relationship is as follows:
Bit No
Frame Rate
VITC LTC
30, 30 df
25
24
14
10
Flag 1 Drop (
df
)
–
–
15
11
Flag 2 Colour Frame (
cf
) Colour Frame (
cf
)
–
35
27
Flag 3 VITC: Field (
ff
)
LTC: Polarity (
pc
)
BGF 0
VITC: Field (
ff
)
LTC: Polarity (
pc
)
55
43
Flag 4 BGF 0
BGF 2
BGF 0
74
58
Flag 5 BGF 1
BGF 1
BGF 1
75
59
Flag 6 BGF 2
VITC: Field (
ff
)
LTC: Polarity (
pc
)
BGF 2
The value of each flag is directly shown as read from the time code word
(
flags 1
–
6
) as well as evaluated according to its meaning (
bgf 0
–
2, cf,
df, ff/pc
).
id
and
dir
are flags produced from TCC70XS:
id
=
1
if VITC, =
0
otherwise,
dir
=
1
if LTC runs in reverse direction, =
0
otherwise.
Error Counter
Error counters of the individual time code readers. Each error will increment a counter. Count
range: 0
–
255. This information can be used to verify that a time code source is free from
errors.
Time Code
Counter 1
Counter 2
D-VITC, ATC_VITC
Discontinuity of the
VITC time addresses
Error with respect to VITC
of 1
st
and 2
nd
field
LTC, ATC_LTC
Discontinuity of the
LTC time addresses
Each counter resets to zero if the corresponding time code reader will be disabled completely
at the
Functions
configuration page.
