iZ Technology Corporation
TIMECODE
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RADAR supports two distinct protocols of positional timecode: SMPTE/EBU and MIDI timecode (MTC).
Both support all industry standard frame counts and rates. While chasing timecode it is normal practice to
reference RADAR’s clock either directly to the incoming timecode signal or to an external wordclock or
video sync source. These clock sources are set separately in the MAIN MENU / SYNC MENU / SYNC
REFERENCE menu.
Because there are many variables when synchronizing devices in a recording studio or broadcasting
facility RADAR has been designed to be very flexible in this regard.
RADAR can chase either SMPTE or MTC (MIDI timecode) and synchronize its internal clock to video
sync, wordclock, active digital I/O connections or even to an incoming SMPTE or MTC signal. This allows
RADAR to synchronize with other audio recorders, video tape recorders and sequencers in the real world.
When slaved to an analogue tape machine it is critical that RADAR follow any deviation in speed
introduced by the tape transport. In this scenario the incoming timecode is smoothed and averaged to
create a stable reference signal for the internal clock of the RADAR. Because the internal clock will
constantly match the incoming clock source in this configuration, RADAR will follow the master exactly,
even if vari-speed is used.
In other applications where all the devices in a system are referenced to video sync i.e. black burst or
house sync, RADAR can be referenced to video sync directly or to a wordclock generator that is in turn
referenced to the video sync source. A system wide sync source is critical for video and film production
and post-production work because it creates a known relationship between the positional timecode and
the timing information present in the video signal. For more information on video sync refer to
APPLICATIONS: LIVE RECORDING:CHASING TIMECODE AND CLOCK SYNCHRONIZING and APPLICATIONS:
PLAYBACK:CHASING TIMECODE AND CLOCK SYNCHRONIZING.
Offsets between RADAR and other machines can be captured or set manually.
For more information on sync reference, refer to CONFIGURATION: SYNC REFERENCE earlier
in this section.
SYNC
One of the keys to accurate positional synchronization is reference synchronization. The reference sync
signal provides a clock that enables RADAR to lock with other devices without drifting over time. Please
refer to CONFIGURATION: SYNC REFERENCE for information on this important topic.
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