D950/Vista Digital Mixing System
Date printed: 05.08.03 SW V3.3 GC Operation 4-97
4.6.5.2.2 TC3 Reader Settings
Most of the READER settings are automatically set by the system.
Time Source: Select the timecode source for the automation system (master timecode,
used for locate points etc.). If linear timecode (LTC) or the TC3 internal
generator is used, set the source to “TC Input or Internal Generator”. If 9-
pin is used as a TC source, set the source accordingly.
Frame Rate: Supported frame rates are: 24/25/30/30 drop frame. The incoming format
is automatically detected. However, if working with 9-pin TC, the format
may be selected in the “Generator / 9-pin” section.
Offset: This introduces an offset in the TC format, expressed by Reader TC
Value/Incoming TC Value.
Note 1: If it is critical to have quarter-frame accuracy in the dynamic automation
system, it is not recommended to use 9-pin as a timecode source. Techni-
cally, the LTC input is much more accurate whereas the 9-pin input is
likely to jitter due to technical specification of the interface (mostly: max.
1 frame). However, for most applications using of the 9-pin input may be
sufficient. It gives the additional advantage of not having to care about
slow motion automation.
Note 2: If working in slow motion or requesting the automation to show correct
values even when the system is not in play speed, the following conditions
must be met by the connected TC source:
1. If the TC source is set to “TC Input or Internal Generator”, the con-
nected LTC source must provide “standing timecode”, also called
“stationary timecode”. This means that the source is delivering LTC
even when in stop or slow motion. Please refer to the manual of your
TC source in order to check this condition.
2. If working with 9-pin as the master timecode source, there is normally
no problem with machines not providing the current timecode position
while being in stop. Most of the machines will provide their position
at any speed and time. However, please refer to Note 1 (above) con-
cerning accuracy of the provided timecode.
4.6.5.2.3 TC2 Generator Settings
The GENERATOR settings have to be set according to the desired time
code format to be generated. The settings are:
Frame Rate Select from 24/25/30/30 drop frame formats for the generated TC signal.
Sync Reference source Select the Synchronization reference source for the TC2 Generator from
the following options:
• Internal Generator Reference (Internal gen. ref.);
• Reader: TC Input;
• Video sync (BNC).
Usual settings are Internal gen. ref or Video sync.
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