TCG TIME CODE GENERATOR
for SR-112
TIMECODE DISTRIPALIZER
TCG Time Code Generator
Software option for the SR-112
The TCG is an option for the SR-112 that enables the user to generate time code. Installation is very simple as it is software only and doesn’t require any hardware modification.
Features
- Generates all standard time code formats
- Genlocks to video sync (HD and SD)
- Repairs time code:
- Copy Mode (Regenerate)
- Jam Sync Mode
- Can also delay time code and correct phase errors
Generating Time Code
The TCG can be used as a stand alone master generator, locked to it’s high precision internal crystal or genlocked to an external video sync including HD and SD..
Repairing Time Code
The TCG can also be used to repair time code by regenerating or jamsyncing incoming time code.
- Drop Out Repairs: In Repair mode, time code is regenerated and fills in drop outs. Flywheeling times available are: 5fr, 15fr or ∞. The TCG can lock to either the incoming code or to an external video reference.
- Jitter Reduction: The regenerator uses a proprietary form of phase locking to clock the output time code. This is continuously updated to follow the input variations, thus maintaining sync while substantially reducing jitter.
- Auto Video Phase Correction: If the incoming code is synchronous but out of phase with the video reference, the TCG automatically aligns time code to the closest video frame edge.
- Time Code Delay: The TCG can delay the source time code up to 60 miliseconds. This feature can be used when audio is ahead of the video.
TGC Specifications
| Modes of Operation: | Generate Repair |
| Generator Formats: | 24 fps – speed: 23.976 24 fps – speed: 24.000 25 fps – speed: 25.000 30 DF – speed: 29.970 30 ND – speed: 29.970 30 DF – speed: 30.000 30 ND – speed: 30.000 |
| Repair Modes: | Copy – continuously copies the time code input, as long as it continues to increment. Jam – a one-time copy of the input time code is transferred, then generator increments as in GENERATE mode. Show – a special setting for live shows where no frames are skipped or duplicated |
| Repair Flywheel Times: | 5 Fr 15 fr Infinity |
| Repair Ramp up Time: | None to 9.5 sec in 0.5 sec increments |
TGC Resources
Manual & Data Sheet
Engineering Notes / Modifications
FAQs
How do I install the TCG in my SR-112?
Enter the authorization code you received when you purchased the TCG in menu 98 (Feature Key). Keep in mind that this code is only valid for the SR-112 with the serial number used during registration.
Can the TCG generate 23.976 code locked to NTSC video?
Yes. And when that happens, the GEN STATUS 1 page displays “XFrm” to indicate that the generator is creating 24 frame code locked at 23.976Hz to an NTSC video reference. This is the only cross frame mode currently supported.
What is the difference between ‘Copy’ and ‘Jam’?
Copy means the TCG continuously reads the time code input and regenerates the exact same numbers. Jam means that a one-time copy of the input time code is transferred to the generator shortly after the input time code achieves play velocity. The generator then increments as it would in Generate Mode.
What is the ‘Show’ option?
The show option is a special repair mode for live shows that guarantees a continuous stream of time code (no drop-outs, no skipped frame).
Can the TCG delay time code to realign it with video?
When Video Ref is turned on, the regenerated time code will always be aligned properly with video, even if the input is out of phase. In addition to proper edge alignment, the TCG also lets you delay the time code, up to 60 msec, in case the video is lagging (lip sync is off).
Can the TCG be remote-controlled?
Yes, there are 2 ways to remote-control the TCG. The first one is done manually, via the ethernet port using a standard browser (SR-112 user manual page 17). The second is via the optional serial adapter SP/SR112 – refer to the Command List of the protocol description.
Why is the ‘Reshape’ LED blinking while I am in ‘Repair’ Mode?
It means that the Generator is bypassed and the input time code is active. The SR-112 is reshaping, not regenerating. Typically, this happens during jam/copy ramp up and is temporary. It also happens when the input code is not within the menu 23 or 24 specs (Input Persistency and Jam Window). Look at the Gen Status 2 page on the LCD and see if the ‘Copy’ or ‘Jam’ indicator is also blinking. If so, adjust the settings of menus 23 and/or 24.