Appendix
English, Revision 04, Date: 19.01.2015
51
A.2
Data direction SPS -> Antenna
In this direction commands are transmitted only when required (by now the command
for starting the monitor program is implemented; see section 4.2.3.1.2 on page 22). To
overcome the frequent cyclical data output of the antenna, the 3964R of the antenna
has a lower priority (see Figure 28).
Figure 29
Diagram procedure 3964R; SPS —> antenna
B
Procedure „transparent“
For the interconnection antenna <—> SPS a transparent protocol can be used. The fol-
lowing settings have to be observed for the data transmission:
-
1 start bit, 8 data bit, parity even, 1 stop bit, Baudrate 19200 Bd (default) or
38400 Bd.
B.1
Data direction antenna -> SPS
In this direction, cyclical antenna data is transmitted. The duration is parameterize-
able, it should take an integral part or multiple of the transponder code transmission.
The minimum cycle duration depends upon the telegram length, the Baudrate and the
chosen telegram content.
The data sentence always starts with an „=“-character (hex 0x3d). Then the parame-
ters chosen from the respective menu follow. The telegram is to be quit with an 8 bit
check sum over all characters. The characters are sent without delay.
B.2
Data direction SPS -> antenna
Commands are transmitted into this direction if necessary. Each command must start
with a „=“-character (hex 0x3d). The format of the commands is described in Table 3
„Possible system status messages“ on page 20. The telegram is to be quit with a 8 bit
