Mentor XL
11.2.4
LTC sub-menu
•
Mode
: turns the LTC timecode on and off. Factory default setting is “Off”.
•
Frame Rate
. Since LTC is not encoded within a video signal, the frame rate must be set either
explicitly or by linked association with another system output.
•
Drop / Non-Drop
. Relates to 525/NTSC line timecode and determines whether frames are
dropped to compensate for the non-integer number of NTSC frames per second.
•
Colour Frame Flag
. This is a single bit within the data stream which indicates whether
timecode is related to the video signal. This menu option allows the operator to turn this bit
on or off.
•
User Bits
: the primary function of the User Bits is to allow the operator to embed a date
code within the data stream since timecode represents only embedded time. This conforms
to SMPTE S309.
•
Timecode Offset
. An additional offset may be applied to any timecode output, with a value
between -23h: 59m: 59s and +23h: 59m: 59s. The default is 0h: 0m: 0s. This offset is applied
immediately. Timecode outputs using the same oscillator frequency will remain “in-step”,
using the Timecode JAM settings applied in section 11.2.1.
•
Show Clock:
displays the current LTC1 or LTC2 clock as read-only.
11.2.5
LTC – Frame Rate sub-menu
LTC: Select Frame Rate Source
Independent
23.98
24
25
29.97
30
Main Board
Analog 1
BnB 3
BnB 4
BnB 5
SDI 1
SDI 2
SDI 3
Option Board 3: TLS
1
2
3
4
Since LTC is not contained within a video waveform, the timing must either be set explicitly or allied
to one of the signal outputs.
Page 54 of 84
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