Rosendahl mif 4 - Manual (Page 9)

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6. DISPLAY modes
Press the right key to select one of four display modes:
TC timecode in hours, minutes, seconds and frames.
UB so-called LTC userbits, 8 nibbles shown hex from 0 to F.
CAL showing the speed of the timecode output.
Display mode CALIBRATION is showing the factor of the current
timecode speed used related to nominal speed.
Examples:
1.0000 = nominal, 0.9990 = pull down, 1.0001 is + 0.01% (100 ppm).
On the left side of the display the letter "r" indicates reference
locked,
the video reference input signal is used for synchronising the actual
timecode generation.
"I" stands for Input and indicates that only the timecode input source
is used to synchronise the actual timecode generation.
LTC mode always references to the input signal even when a valid
reference signal with matching frame rate is applied.
In MTC or USB mode the video reference is used, when the frame
rate matches the timecode standard, i.e. 25 FPS timecode standard
together with PAL 576i50 video syncs.
Pull down video syncs force 30 FPS and DF timecode sources to be
referenced to 29.97 (CAL = 0.9990).