Comtech EF Data SDM-300A - Manual (Page 286)

SDM-300A Satellite Modem Revision 6
ASYNC/AUPC Interface MN/SDM300A.IOM
11–4
11.2 AUPC
There are two modes of AUPC location:
AUPC between two modems Maintains a target Eb/No programmed into the modem at each end.
Self-Monitoring AUPC with one
modem Maintains a target Eb/No for a modem that receives its own carrier from
the satellite.
The menu below is enabled by selecting Local Modem AUPC = ON, located under the
Utility: Modem Type menu. This menu sets the AUPC parameters for both the self
monitoring with one modem and the AUPC between two modems.
Table 11-1. Setting AUPC Parameters
AUPC ENABLE Enables the AUPC to function locally. (Configuration: Local AUPC menu)
NOMINAL POWER Output power level. Can be used for problem conditions, if chosen.
MINIMUM POWER Sets minimum output power to be used.
MAXIMUM POWER
Sets maximum output power to be used.
TARGET NOISE Desired Eb/N0 of the local modem.
TRACKING RATE Sets speed at which modems will adjust to output power.
LOCAL CL ACTION Defines action that local modem will take if it loses carrier (Maximum,
Minimum, or Hold).
REMOTE CL ACTION Defines action that local modem will take if remote modem reports carrier
loss (Maximum, Minimum, or Hold).
LINK
MODEM A MODEM B
M O D E M
AUPC Between Two Modems Self-Monitoring AUPC with One Modem