R&S RTO6 - Page 686

Protocol analysis
R&S
®
RTO6
686User Manual 1801.6687.02 ─ 05
Command Word
Figure 13-22: Structure of a command word
The format of a command word consists of the following parts (see Figure 13-22):
●
Sync: an invalid Manchester waveform.
●
Remote Terminal (R
T) Address: the unique address of the corresponding RT.
●
Transmit/Receive (T/R): indicates the action required from the RT.
●
Subaddress/Mode Code: indicates the RT subaddress. The subaddresses 0 and
31 signalize the transmission of a mode code.
●
Data Word Count /Mode Code: indicates the number of words that are sent/
received by the RT. A maximum of 32 words is allowed. This field may be used for
the transmission of the mode code value.
●
Parity: checks if there are bit errors during the transmission. The total number of
logic 1 bits for the word (sync bits not included) shall be odd.
Data Word
Figure 13-23: Structure of a data word
The format of a data word consists of the following parts (see Figure 13-23):
●
Sync: an invalid Manchester waveform.
●
Data: the transferred information (16 bit).
●
Parity: checks if there are bit errors during the transmission. The total number of
logic 1 bits for the word (sync bits not included) shall be odd.
MIL-1553 (option R&S RT
O6-K530)