Q-Flex Satellite Modem Installation and Operating Handbook
13-4
The effect of
Link-Local
is to transmit whatever is received over the satellite ESC channel
out onto the local modem’s M&C bus, while at the same time, transmitting all incoming
M&C messages out over the satellite ESC channel.
The effect of
Link-Remote
is to loop back whatever is received over the modem’s satellite
ESC channel to the modem’s M&C port and to transmit over the satellite ESC channel
whatever is transmitted by the modem out of its M&C port.
IP to Serial
supports the transmission of IP-wrappered RS485 messages through the
ESC channel, which are then transmitted as serial messages on the remote RS485 bus.
13.3 Edit->Tx-Rx>Framing->Overhead IBS Screen
The
Edit->Tx-Rx->Framing->Overhead IBS
screen, shown in
Figure 13-3
controls the
overhead in IBS mode, allowing both the low and high-rate ESC channels to be set up.
Figure 13-3 Edit->Tx-Rx->Framing->Overhead IBS Screen
This contains the following options:
•
High-rate ESC data mode.
Controls whether the IBS high-rate asynchronous ESC
channel is enabled.
•
High-rate ESC overhead usage.
This allows backward compatibility with the
Paradise P230 unit but should otherwise be set to
Maximum overhead
.
•
ESC interface baud rate
. IBS uses a fixed frame format and therefore the amount
of overhead is limited. The maximum ESC baud rate that may be selected is
displayed.
•
ESC interface character length.
This can be set to 7 or 8 bits.
•
ESC interface parity polarity.
This can be set to
None
,
Even
or
Odd
.
