Paradise Datacom P300 Series Installation & Operating Handbook page 158

beyond the current level.
- Limit only: Power economy: The power will not increase, but it will reduce if there are any
especially good atmospheric conditions that allow less power to achieve the target Eb/No.
The AUPC can also be set in self monitor mode (
use d to broadcast information to multiple Rx sites. Provided the local modem Rx path is locked to this
broa dcast carrier then the local Eb/No indicates any atmospheric changes on the local end satellite
upli nk and down link. In this mode the AUPC controls the local Tx power by directly monitoring the
loca l Eb/No. This is an imperfect system as it changes the local Tx power to compensate for local
atmospheric changes which affect the local uplink and downlink, it cannot however compensate for
d istant atmospheric changes affecting the multiple distant downlinks.
ESC channel as the AUPC software can directly read the local Eb/No as well as control the local Tx
pow er.
If AUPC is active in normal (
AUPC can be displayed (
th e traffic log using the Autolog feature (
output on the uncommitted analog DAC output if the Monitor / AGC option is fitted (again see
uncommitted analog DAC output , value = 5 in Appendix E
The speed of reaction of the AUPC depen
(specifically to limit the rate of change of Tx power when a power adjustment is deemed necessary),
and the ESC channel Baud rate (which affects ho
m odem in order to determine if any adjustment is necessary).
The AUPC will use a different proportion of the available ESC bandwidth depending on the E
interface selected.
P300H P300 Series Modem Installation and Operating Handbook
). This is used when a single Tx carrier is
) or self monitor (
), also the AUPC delta power ca
). The AUPC delta power can also be
starting on page 207)
ds primarily on two factors: The user specified slew rate
w regularly the distant Eb/No is read by the local
mode requires no
) modes then the status of the
n be recorded regularly in
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