Trilogy Mentor XL, User Manual

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Mentor XL
11.2.1 Timecode Jamming
Timecode jamming is the process of setting the time carried on the timecode stream. To avoid
discontinuity, it is important to carry this out carefully. Some menu options apply to all “base” clock
frequencies and are presented under the “All Frequencies” branch. Other options are available
under individual frequencies (e.g. 23.98 Hz etc.) used to derive specific output signals. For example,
to jam the timecode for a 625 PAL signal, follow the 25 Hz menu branch.
11.2.2 Timecode sub-menu
Four timecode formats are supported from the format menu: the chosen format applies to all
timecode generated by the Mentor XL. The different format options place date/time data into the
binary groups of the VITC/LTC codeword in a different sequence. See the table in section 11.2.3
(below) for more detail.
• Format
o
SMPTE 309M
o
Non SMPTE

European

US

Leitch
•
JAM Source
o
Manual: enter values manually from the front panel or browser
o
RTC: uses the Real Time clock
o
VITC: jams the timecode by sampling VITC on the Mentor XL Genlock input. Note:
This option is only displayed when a suitable signal is detected and is only available
under the “All frequencies” branch of the menu. Software version 4.0.0.5 or later is
required.
•
JAM Mode
o
Auto: sets a scheduled time for jamming to take place. This is a recurring action
o
Manual: on command
o
Genlock: when this option is selected, jamming takes place every time genlock is
achieved
• JAM!: initiates the JAM procedure with OK / cancel options.
• Show Clock: shows the current timecode clock for each “base” frequency as read-only. This
option is not displayed on the “All Frequencies” menu branch.
11.2.3 Timecode formats: SMPTE and non-SMPTE
SMPTE 309M --------- Non-SMPTE 309M ---------
European
US Leitch
Binary Group 1 Day units
Binary Group 2 Day tens Day units
Binary Group 3 Month units Day units Month units Month units
Binary Group 4 Month tens Day tens Month tens Month tens/Day tens
Binary Group 5 Year units Month units Day units
Binary Group 6 Year tens Month tens Day tens Year units
Binary Group 7 Year units Year units
Binary Group 8 Year tens Year tens Year tens
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