Rosendahl mif 4 - Manual (Page 6)

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Timecode faster or slower than 6% or timecode running reverse is
translated into so-called MTC full messages.
MTC full messages are used to spot a DAW or other MTC controlled
software to a specific location, just like a locater.
In operation mode SOURCE = LTC a video sync input signal
does not influence the LTC to MTC translation process.
Synchronisation is always referenced to the LTC Input signal,
indicated in CAL DISPLAY mode by "I" ( I 1.0000 ).
The default timecode standard after powering up is defined by the
non volatile stored settings made in the generator setup (section 5).
Detection of a different timecode standard takes one time 2-3
seconds. A correctly setup default standard avoids this delay each
time after powering up.
4. MTC and USB input modes
Digital Audio Workstations as well as lighting and show control
software use MTC midi timecode for synchronisation.
mif 4 reads MTC to regenerate synchronised, stable LTC and MTC
timecode.
MTC timecode can be quite unstable and jittery caused by the
latency of computer operating systems. For this reason, mif 4 makes
use of slow and integrating sync algorithms.
If the unit receives an MTC full message, it will stop and generate a
short burst of stationary LTC timecode.
The unit repeats one LTC frame 8 times.
On the LED display there are DECIMAL POINTS to separate hours,
minutes, seconds and frames (00.00.00.00.).
The rightmost decimal point (to the right of the frame digits) is used
as a LOCKED indicator.