
5
1
GENERAL
This manual provides instructions for installing and operating the HORITA TCP-50 Time Code Processor.
The TCP-50 is intended for use in field, studio, editing, engineering, and post production situations where it is desired to
translate between time code frame rates, add an offset to an existing time code value, repair a time code signal, evaluate
time code signal integrity, or provide a seamless switchover to a backup time code signal should a master time code signal
fail.
The TCP-50 consists of a SMPTE longitudinal Time Code Reader (TCR) and a SMPTE longitudinal Time Code Generator
(TCG) which operate together to perform the various translation functions. The TCP-50 has a time code input for the TCR
and a time code output from the TCG. There is also a composite video input to lock the TCG time code to a video reference
("genlock"), and to overlay the video with the TCR and TCG time code numbers or various TCP-50 operational setup
menus.
The TCP-50 also allows user entry up to 9 lines of 20 characters each of source ID or other alphanumeric titling
information.
All of the TCP-50 setup information, operating mode selection, and titling information is saved in a battery backed up, non-
volatile memory, and restored at power up.
1.1 Word and Acronym Definitions
Word and acronym definitions used in this manual are defined below:
DF Drop Frame time code - A 30FPS time code numbering system consisting of hours, minutes, seconds, and
frames (HR:MN:SC:FR) running at the slightly slower frame rate of 29.97FPS rate causes the "real" time
indicated by the numbers to also run slightly slower, gradually falling behind real time to accumulate an
error of about 3 1/2 seconds an hour.
To correct this error in real time, some frame numbers are "skipped" or "dropped" from the expected
numbering sequence. The formula is that at the start of each minute, except for a new tens of minute, the
frame number sequence progresses from frame number 29 to frame number 02, rather than from frame
number 29 to frame number 00. This skipping ahead by 2 frame numbers a minute causes the time code
time to match that of real time.
EBU European Broadcast Union - European standards setting organization.
FPS Frames-Per-Second of video, film, or time code.
23.976FPS - video "film" camera frame rate proportionally slowed to match 29.97FPS video rate
24FPS - film speed frame rate.
25FPS - European PAL television frame rate.
29.97FPS US NTSC color television frame rate.
29.97DF - "Drop frame" time code that matches US television frame rate as well as real time.
29.97NDF - "Non-drop frame time code that matches US television frame rate but whose time value runs
slower than real time.
30FPS - US television BW frame rate.
Freerun Not locked to a reference.
Genlock To lock signals together such that one is a timing reference for the other. For example, to lock time code
generation to a video reference so that each frame of time code is generated in exact synchronism with
each video frame.
Jam, jamming, To preset a time code generator to the same time as a time jammed code reader to cause the
generated time code to be the same as the read time code.
LTC Longitudinal (or Linear) Time Code - time code that has a frequency range that allows it to be recorded
on an audio recorder or the audio track of a video recorder. Generally, longitudinal refers to being