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the number of consecutive jam bypass errors exceeds 5, the last valid primary reader's time is jammed
into the generator again with the programmed OFFSET. In the absence of valid reader data within the
last 5 frames, the generator operates according to the programmed NO CODE JAM mode (HOLD =
generator stops; RUN = generator increments normally; or MUTE = generator turns off) until valid
reader code resumes. At this time it will be re-jammed to the reader, thus repairing large dropouts on
the reader tape. (See section 3.4.10 for a full description of the NO CODE JAM modes.)
The drop frame and colour frame modes of the code being read are transferred to the generator during
jam sync. The formatted modes return when the Jam sync mode is terminated.
The OFFSET register for the Continuous Jam Sync mode allows you to apply a continuous offset
between the generator and reader numbers when you are in Continuous Jam Sync mode. The value
entered into the Offset register will be added to the reader time before it is jammed into the generator.
Offset values other than 00:00:00:00 usually indicate that the generator is leading the reader. In order
for the generator to lag behind the reader, enter a value equal to 24:00:00:00 minus the lag offset
desired.
3.4.5. Turning the ATC Generator On
The ANC GEN ON/OFF key is used to turn the Ancillary Time code (ATC) inserter on and off. (You
must exit the Setup menu to turn the ATC generator on or off.) When the ATC generator is Off, the
program video passes through the ATC keyer with nothing added. When the ATC generator is On, the
RP188 ancillary time code and the VANC IRIG packet will be added to the program video.
3.4.6. Setting the ATC Packet Type.
GEN ATC TYPE
Atc gen:ltc
Atc gen:vitc
Atc gen:ltc+vitc
3.4.7. Selecting the Line to Insert VANC IRIG Packets On.
In addition to inserting ATC packets into the HANC area of the HDSDI, the HD9010TM-IRIG inserts a
VANC packet that contains the IRIG TIME as well as user data entered using the AUX COM serial port.
(Contact the factory for information about inserting user data into the VANC packet.) This special
VANC packet can be decoded by the HD9010TM-IRIG's VANC reader to allow you to encode the IRIG
information onto a 'clean' videotape and then display the IRIG information later on playback. See
section 3.5.2 for information on how to set the HD9010TM to read the VANC IRIG packet.
OPERATION
HD9010TM-IRIG HDTV Time Code Master / IRIG-B Reader Manual
The SMPTE RP188 recommended practice for Ancillary Timecode
(ATC) identifies two types of ATC packets. The GEN ATC TYPE menu
item is used to select whether the ATC generator will insert LTC, VITC
or both types of ancillary timecode packets.
Select Atc gen:ltc to insert LTC type ATC packets.
Select Atc gen:vitc to insert VITC type ATC packets.
Select Atc gen:ltc+vitc (default) to insert both LTC and VITC type ATC
packets.
Revision 2.1
Page 3-6
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