Meinberg GPS167TGP, Operating Instructions Manual

Page: 13 / 62

13
Programmable pulse
(optional)
At the male connector Typ VG64 there are three programmable TTL outputs (Prog
Pulse 0-2), which are arbitrarily programmable.
Other technical details are described at the end of this manual.
Timecode outputs
(optional)
Abstract
The transmission of coded timing signals began to take on widespread importance
in the early 1950´s. Especially the US missile and space programs were the forces
behind the development of these time codes, which were used for the correlation of
data. The definition of time code formats was completely arbitrary and left to the
individual ideas of each design engineer. Hundreds of different time codes were
formed, some of which were standardized by the "Inter Range Instrumentation Group"
(IRIG) in the early 60´s.
Except these "IRIG Time Codes", other formats like NASA36, XR3 or 2137 are still
in use. The board GPS167 however generates the IRIG-B, AFNOR NFS 87-500 code
as well as IEEE1344 code which is an IRIG-B123 coded extended by information for
time zone, leap second and date. Other formats may be available on request.
At the male connector Typ VG64 there are also IRIG-B modulated (3Vpp into 50
Ohm) and IRIG-B unmodulated DC level shift.