Rosendahl mif 4 - Manual (Page 7)

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If the unit is in sync and outputs locked timecode, this LOCKED
indicator will light up. In MTC or USB input modes the LOCKED
threshold is < 5ms, in LTC mode < 100µS.
If the incoming midi timecode is jumping or drifting away so that mif 4
is unable to follow the source, it will display ERROR 01 in MTC mode
or ERROR 02 in USB mode.
In this case a stop and restart of the timecode synchronisation will be
executed.
5. GEN generator mode
To edit and start the timecode generator manually please select the
generator mode (SOURCE = GEN) and display mode timecode
(DISPLAY = TC).
Now press and hold the left key for about two seconds until the
HOUR digits and the right key start blinking.
Change the "HOUR" setting with the right key.
Holding down this key for a second will automatically count up the
"HOUR" value.
Press the left key again to navigate to MINUTES.
Change the "MINUTES" value using the right key.
Press the left key again to navigate to FPS section.
(FPS = Frame Per Second)
Select the timecode standard 24, 25, 30 or 30 drop using the right
key.
Press the left key once again to start the timecode generator
manually.
If there is an external video sync signal applied matching the
selected frame rate, the timecode generator will be started
genlocked.
So the start of picture (vertical sync) matches the start of the 80 bit
LTC timecode word and MTC quarter frame F1 0x.