Grass Valley TTN-BRS-3232 - Manual (Page 21)

BRS-3232 Rev. 1
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7.2.2. Example: Several units connected by NCB
Messages sent to the RS232 of a single unit will be returned once no matter what address or input/output
number the message has, unless it is a matrix which recognizes one of the conditions a) or b) above.
If none of the cases a) or b) is fulfilled the message will also be transmitted on the NCB. Then if any unit
on the NCB ring recognizes any of the cases a)/b) or c), the message will stop at that point. This means
that the message will only be returned once on the RS232.
However, if none of the units on the NCB ring recognizes any of the cases a) to c), the message will return
to the originator (the unit which received the message on RS232). This unit will re-transmit the message
once more on both NCB and RS232. The message is therefore returned a second time on RS232. This
time one of the cases a) or c) is sure to be identified by one of the units on the NCB ring, and the message
is removed.
There is however one more special case: If several messages for unused addresses are transmitted with
only little delay, one might experience that some messages are returned several times, as the
store/compare/remove function in case c) can only handle a single message at the time. We therefore
recommend that the user avoid sending messages to unused addresses.
7.3. RS232
The RS-232 port is used for external control of Triton units. The RS-232 port allows the customer to
control the equipment via the Triton Router Control System PC program or self-defined customized
solutions.
Connector for the RS-232 port is a DS9 female.
Pin 2 - Tx.
Pin 3 - Rx
Pin 5 - GND
A standard DCE (Data Communication Equipment) cable can be used for connection between PC and
Triton equipment. The connection between the connectors is made one-to-one.
Data-rate is 19200 baud/sec with 8 data-bit, 1 stop-bit, no parity.