Serial Datagram; Customizable Datagrams - GE Reason RT430 Technical Manual

o
100PPS-Output with 100 pulses-per-second;
o
PPX - Output with programmable frequency pulses;
o
PPM - Output with 1 pulse-per-minute;
o
item TMARK - Output with programmable time;
o
IRIG-B - Output with IRIG-B004 signal;
o
DCF77 - Output with DCF77 signal.
It is also possible to choose normal or inverted polarity for each output individually.

The field TMARK allows configuring time to generate a pulse with daily repetition. All outputs
programmed to send TMARK pulses will be programmed within the same time.

The field PPX allows configuring a pulse-frequency that can vary from 1 pulse every-2-seconds to 1
pulse-per-day. All outputs programmed to send PPX pulses will be programmed within the same
pulse-frequency.

The field Cable delay compensation allows entering the size of the antenna cable in meters, allowing
the unit to compensate propagation delay according to the cable length (values between 0 and 999
meters are allowed).
4.4.2

Serial datagram


The field Datagram allows configuring a datagram sent by the serial port. ACEB, NEMEA, GPZDA,
Meinberg and customizable datagrams are possible. When choosing a customizable datagram, it is
necessary to enter a characters set according to the time information used. For more details about
ACEB, NEMEA, GPZDA and Meinberg datagrams, see

A serial datagram is sent each second. The field On-time mark allows choosing if the sending will be
synchronized with the beginning or the end of the datagram;
o
Start of first: pulse synchronized with the beginning of the datagram;
o
Start of last: pulse synchronized with the end of the datagram;

Serial: allows configuring the serial port parameters.
o
The field Speed allows choosing data transmission speed of the serial port, which can be
38400, 19200, 9600, 4800 or 1200 bps;
o
The field Data allows defining the data bits, which can be 7 or 8;
o
The field Parity allows choosing the serial port parity, which can be odd, even, or none;
o
The field Stop bit allows choosing the datagram stop bit, which can be 1 or 2.
4.4.3

Customizable datagrams

RT430 allows defining a datagram ``ASCII'' to be sent once per second by the serial port, using the
characters described below. The datagram characters can be single or special.
The single characters allowed are: 0..9 A..Z a..z $ \{ \} ( ) [ ] . , ; : ! ? @ < >$ \# * \_ - \% \$ blank and empty.
RT430-TM-EN-5
Appendix C;
RT430
57