anyone use IRIG-B timecode with Phantom VEO models ? IRIG-B from GPS receiver

[PCMsoundie]

"What is IRIG-B?
The IRIG-B time code is used in military, government, power industry, and many other commercial and industrial applications to ensure precise time synchronization. "

 

I know there was a timecode box with a kickstarter or indiegogo that was timecode.io or something for GPS UTP time autoset to SMPTE TC OUT that never made the product as was not funded. With cheap TCXO boxes like Diety and Tentacle perhaps we won't really see it in the field for film and TV. Has anyone worked with the Phantom VEO model cameras and used IRIG-B timecode instead of SMPTE? Was it fed from a GPS receiver at all? Even if shooting at 24fps not high speed?

Phantom High Speed VEO & VEO4k Cameras can do:

TC IN: Timecode Input can accept IRIG-B ande SMPTE standards
TC Out: Normally an unmodulated (dc-shifted) IRIG-B (at RS-232 levels) which follows the internal time base of the camera. It is recommended not to process the TC-Out, since a processed signal may no longer represent a standard or accurate time code.

unlike iXML data in the header of Poly WAV files which is just a stamp of SMPTE TC on the first frame IRIG has time code stamped to each frame,  [IRIG format year/hour:minute:second:ns]

The only gear I could see working with this is

The company Masterclock makes The GMR1000 and GMR5000 master clocks can reference GPS, GNSS, time code, NEMA 0183, or frequency signals and generate IRIG-B0, IRIG-B1, IRIG-A, IRIG-E or SMPTE/EBU. They can also act as an NTP server, PTP grandmaster or frequency generator if your system requires multiple timing signals.
GPS500 GPS TIME CODE GENERATOR
The GPS500 is a precision IRIG-B time code generator. It receives reference time information from atomic clocks in GPS satellites, extracting timing reference from these signals, and generates time code synchronized to less than 10 microseconds of UTC (Universal Coordinated Time). If the GPS500 loses connection to GPS satellites, it reverts to an internal TCXO. The GPS500 generates IRIG-B in 1kHz modulated and un-modulated (pulse-width coded) format.  The GPS500 also outputs: SMPTE, EBU:30, 25 or 24fps, PPS, NMEA, Kinemetrics/Truetime protocol,  and date-encoded references (IRIG 1344 and SMPTE Leitch date format or 309M)

 

If you did use IRIG-B how did you set it up and how was it used INSTEAD of SMPTE TC? What was the nature of using TC from GPS satellites?

[Bouke]

Only IRIG i've seen is on a second track of BWF in aviation communications recordings.
(I wrote an IRIG B decoder for MakeTranscriberFiles)

 

 

[Bouke]

On 11/29/2022 at 4:31 PM, PCMsoundie said:

The GPS500 is a precision IRIG-B time code generator. It receives reference time information from atomic clocks in GPS satellites, extracting timing reference from these signals, and generates time code synchronized to less than 10 microseconds of UTC (Universal Coordinated Time). If the GPS500 loses connection to GPS satellites, it reverts to an internal TCXO. The GPS500 generates IRIG-B in 1kHz modulated and un-modulated (pulse-width coded) format.  The GPS500 also outputs: SMPTE, EBU:30, 25 or 24fps, PPS, NMEA, Kinemetrics/Truetime protocol,  and date-encoded references (IRIG 1344 and SMPTE Leitch date format or 309M)

 

this is a bit of a bullshit sales quote.
IRIG B transmits time and day once a second, and the duration of the whole 'the time / date is now exactly: yadda' takes one second.
As I've explained earlier, that does NOT mean it can't be highly accurate (Like in music, the metronome dictates the beats, but NOT the exact moment a note is played.)

But I don't see IRIG B has a place in the syncing world.