Generator Ltc Parity Mode Selection; Configuring How The Continuous Jam Sync Mode Works When There Is No Primary Reader Code - evertz HD9010TM-IRIG Instruction Manual

3.4.9. Generator LTC Parity Mode Selection

The purpose of the phase correction parity bit (LTC bit 27 in 30 FPS, 59 in 25 FPS) is to compensate
for phase reversals in the LTC bi-phase mark modulation that could occur when code inserts are
performed. Use of the bi-phase mark parity bit is optional, as some readers may not recognize its
presence.
GEN LTC PARITY
Ltc parity: off
Ltc parity: on
3.4.10. Configuring how the Continuous Jam Sync Mode Works
when there is no Primary Reader Code
GEN NO CODE JAM
No code jam: Run
No code jam: Hold
No code jam: Mute
OPERATION
HD9010TM-IRIG HDTV Time Code Master / IRIG-B Reader Manual
The GEN LTC PARITY item controls the parity mode of the generator.
Select Ltc parity off to configure the generator for the non parity mode.
The bi-phase mark parity bit will be always set to zero.
Select Ltc parity on to configure the generator for the parity mode. The
bi-phase mark parity bit will be put in a state where every 80 bit word
will contain an even number of logic zeros, in order that the
magnetization transient between bit cell 79 of one word and bit cell zero
of the next shall always be in the same direction.
The GEN NO CODE JAM item controls the operation of the continuous
jam sync mode when there is no incoming code to the primary reader.
Select No code jam run when you want the generator to free run when
there is no incoming Reader code. When the reader code resumes,
the generator will re-jam to the incoming code. Using this mode will
allow the user to repair large dropouts in the incoming code. The
generated code will be continuous if the incoming code is also
continuous.
Select No code jam hold when you want the generator to stop when
there is no incoming Reader code. When the reader code resumes,
the generator will re-jam to the incoming code. Use this mode if you
want the output of the generator to stop on the last number read when
you stop the tape machine supplying the incoming code to the reader.
Select No code jam mute when you want to turn off the generator when
there is no incoming Reader code. The generator time will stop at the
last number read. When the reader code resumes, the generator will
turn on and re-jam to the incoming code. Use this mode if you want the
output of the generator to turn off completely when you stop the tape
machine supplying the incoming code to the reader.
Revision 2.1
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