Configuring Aupc For Operation - Paradise Datacom P300 Series Installation & Operating Handbook

If the ESC interface is set to
also being used for network M&C (as this is the setting used to provide the connectivity for distant
end M&C). In this case the AUPC will use up to 33% of the ESC channel bandwidth in order to
ach ieve an Eb/No reporting rate of once per second. If the ESC Baud rate is such (ie so h
the AUPC can achieve this update rate using less than 33% of the ESC channel bandwidth, then
it uses only the proportion of bandwidth required for a 1Hz update rate. The
used by interleaving the requests for the distant Eb/No and distant end Eb/No responses between
M& C messages using the ESC channel.
If th e ESC interface is set to RS485, then the external RS485 interface will be disabled and the
AUP C will use 100% of the ESC channel bandwidth to achieve as high an Eb/N
possible.
If the ESC interface is s
The Eb /No update rate and percentage of ESC channel bandwidth used is displayed on one screen
of the
8.11.2

Configuring AUPC for operation

DO NOT switch on the AUPC immediately, it is much simpler to get the circuit working first, determine
the normal levels, AND THEN activate the AUPC.
Configure t he modems at both ends of the link and ensure the basic satellite link is operating
correctly. S et the Tx power to achieve the di
For IBS/SMS and IDR carriers the ESC can be switched on later within the overhead without
changing the carrier power or bandwidth.
For Clo sed Net Plus ESC carriers, the overhead is added as required for the ESC channel.
Adding an ESC channel later will change the bandwidth of the signal and may slightly affect
the Eb/ No. In this case configure the ESC at least to a nominal Baud rate. If the ESC is not
used fo r any other M&C purposes then 300 Baud may be sufficient for AUPC alone.
Configure an ESC channel for 8 bits no parity, Baud rate as described below.
F or IBS/SMS and IDR configure as higher rate ESC channel as the modem can provide. This
will give the fastest possible reporting rate.
For Clo sed Net Plus ESC our suggestion would be to include the optional Backward Alarm
(as this is a very useful feature), and set the Baud rates as high as possible without either
exceedi ng the allotted satellite bandwidth or using an overh
The ESC channel for the AUPC must have symmetrical Baud rates.
Set the ES C interface:
If the ESC channel is to be used for AUPC only, set the ESC interface to
RS485 port will be disabled and
whatever Baud rate you have defined the ESC channel.
If the ESC channel is to be used for AUPC and distant end remote M&C, set the ESC
interface to either Link-Local or Link-Remote (Local at the controlling PC end, remote at the
end farthest away from the PC).
This is contrary to expectations! When using AUPC with either Link-Local and
Note:
Link-Remote selected as the ESC interface (to internally connect the Remote M&C
po rt to the ESC channel) it is not required to have the ESC channel at the same
Baud rate as the M&C system.
For example the station M&C could be running at 9600 Baud, and the ESC channel
set for 2400 Baud. The AU
P300H P300 Series Modem Installation and Operating Handbook
(
et to RS232 or RS422, AUPC cannot be used.
sequence of screen displays.
stant Eb/No expected under clear sky conditions.
the AUPC will use 100% of the ESC channel capacity at
PC software will buffer and rate convert the M&C
or ) then it assumes the ESC channel is
ead over 10%.
igh) that
33% bandwidth is
o reporting rate as
. The external
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