Comtech EF Data SDM-300L3 - Manual (Page 205)

SDM-300L3 Satellite Modem Revision 1
Modem Types MN/SDM300L3.IOM
5–5
5.5 ASYNC/AUPC Operation
To operate in the Asynchronous/AUPC configuration, the following cards must be installed in the
modem:
• Overhead G.703/IDR/IBS/ASYNC/AUPC/D&I card
• 50-pin D relay adapter card
The ASYNC/AUPC option is a FAST feature that must be enabled using the front panel and the
Utility Modem Type menu. Table A-7 lists that are accessible once the ASYNC/AUPC modem
type is enabled.
T ABLE 5-6. A SYNCHRONOUS P ARAMETER S ETTINGS
Parameter Front Panel Setting Reference Menu
Modem Type ASYNC Utility Modem Type
TX Data/Code Rate TX-V, BPSK 1/2 or QPSK
1/2, 3/4, or 7/8 Configuration Monitor
TX-IF Output ON Configuration Demodulator
RX Data/Code Rate RX-V, BPSK 1/2 or QPSK
1/2, 3/4, or 7/8 Configuration Demodulator
Encoder Type Viterbi/Sequential Utility Modulator
Decoder Type Viterbi/Sequential Utility Demodulator
ASYNC TX Baud 110 to 38400 bit/s Configuration Interface
ASYNC RX Baud 110 to 38400 bit/s Configuration Interface
ASYNC TX Length 5 to 8 bits Configuration Interface
ASYNC RX Length 5 to 8 bits Configuration Interface
ASYNC TX Stop 1 or 2 bits Configuration Interface
ASYNC TX Parity Even or Odd Configuration Interface
ASYNC RX Parity Even or Odd Configuration Interface
Local AUPC ON or OFF Configuration Local AUPC
Nominal Power -5 to -30 dBm Configuration Local AUPC
Minimum Power -5 to -30 dBm Configuration Local AUPC
Maximum Power -5 to -30 dBm Configuration Local AUPC
Tracking Rate 0.5 to 6.0 dBm/min. Configuration Local AUPC
Remote AUPC ON or OFF Function Remote AUPC
AUPC Enable ON or OFF Function Remote AUPC
Baseband Loopback ON or OFF Function Remote AUPC
Asynchronous Overhead with AUPC is a closed network application that gives the user the ability
to communicate from the hub site to the remote site through the added overhead. The user can use
the AUPC feature that remotely controls the remote modem’s power level, according to
parameters programmed by the user. The user also can remotely monitor and control the remote
modem by sending remote commands over the link via the overhead. This can be done by a local
terminal or Monitor and Control system.