HORITA HOR-TRG-100, User Manual, Page: 10 / 17

10
The following Table 4-3 shows all of the video and time code genlock capabilities of the TRG-100:
TCG OUT | VIDEO IN GENLOCK LED | TCR TC IN GENLOCK LED
FPS | FPS FLASH RATE | FPS FLASH RATE
23.976 | 23.976 Frame | 23.976 Frame
| 29.97 PPS | 29.97NDF PPS
| |
24 | 24 Frame | 24 Frame
| 25,30 PPS | 25,30 PPS
| |
25 | 25 Frame | 25 Frame
| 24,30 PPS | 24,30 PPS
| |
29.97NDF | 29.97 Frame | 29.97NDF Frame
| 23.976 PPS | 23.976 PPS
| |
29.97DF | 29.97 Frame | 29.97DF Frame
| |
30 | 30 Frame | 30 Frame
| 24,25 PPS | 24,25 PPS
| |
50 720P | |
50 1080i | 50 Frame | 24,25,30 PPS
| 24,25,30 PPS |
| |
59.94 720P | |
59.94 1080i | 59.94 Frame | 29.97DF PPS
| 23.976 PPS |
NOTE: "Frame" means frame rate, PPS means Pulse-Per-Second rate.
Table 4-2, TCG Video and Time Code Genlock Table
4.26 Genlocking to the Time Code Input
If the TCR and TCG frame rates are equal, the TCR and TCG time codes are genlocked at each frame time. If the TCR and
TCG frame rates are any mix of 24, 25, or 30 FPS, the TCG is genlocked so that TCG frame 00 starts at the start of each
new second of the input time code.
Time code genlock works like this because although the TCR and TCG frame rates may not match, for example if the TCR
equals 25 FPS and the TCG equals 30 FPS, because the jam operation occurred at the start of frame 00, then exactly one
second after the jam operation they will both be incrementing the seconds value of their time codes at exactly the same
instant of time. If the TCR is selected as the GenLock source, then the TCG timing can be adjusted to keep the generated
time code locked to the TCR tine code input.
This same genlock method works for any mix of 23.976 FPS and 29.97NDF FPS TCR/TCG time code, the TCG is
genlocked so that TCG frame 00 occurs at the start of each new TCR second. Refer to Table 4-3 for more detail.
4.27 Genlocking to the Video Input
If the video and TCG frame rates are equal, that is NTSC video and 29.97 FPS time code, or PAL video and 25 FPS time
code, then genlock takes place on each frame of video and time code. If the frame rates are NTSC video and 23.976 FPS
time code, or PAL video and 24 or 30 FPS time code, then genlock takes place at a video derived one second rate at the
start of each TCG frame 00. Refer to Table 4-3 for more detail.