Specifications

SDM-300L3 Satellite Modem Revision 0
Asynchronous Interface/AUPC MN/SDM300L3.IOM
11–24
11.4.4 ASYNC/AUPC Modem Defaults
Table 11-11. ASYNC/AUPC Modem Defaults
Modulator Demodulator
Data Rate A Data Rate A
TX Rate A 64 kbps, QPSK 1/2 RX Rate A 64 kbps, QPSK 1/2
TX Rate B 256 kbps, QPSK 1/2 RX Rate B 256 kbps, QPSK 1/2
TX Rate C 768 kbps, QPSK 1/2 RX Rate C 768 kbps, QPSK 1/2
TX Rate D 2048 kbps, QPSK 1/2 RX Rate D 2048 kbps, QPSK 1/2
TX Rate V 128 kbps, QPSK 1/2 RX Rate V 128 kbps, QPSK 1/2
IF Frequency 70 MHz IF Frequency 70 MHz
IF Output OFF Descrambler ON
TX Power Level +0 dBm Differential Decoder ON
Scrambler ON RF Loop Back OFF
Differential Encoder ON IF Loop Back OFF
CW Mode Normal (OFF) BER Threshold NONE
RS Encoder OFF Sweep Center Freq. 0 Hz
Modulator Type EFD Closed Sweep Range 60000 Hz
Encoder Type Viterbi Sweep Reacquisition 0 seconds
Mod Spectrum Normal RS Decoder OFF
Mod Power Fixed 0 dB Demodulator Type EFD Closed
Decoder Type Viterbi
Demod Spectrum Normal
Interface
TX Clock Source TX Terrestrial Frame Structure E1 Data G.704
Buffer Clock Source RX Satellite Frame Structure T2 Data G.743
TX Clock Phase Auto Frame Structure E2 Data G.742
RX Clock Phase Normal TX Terr Interface G.703
EXT-REF Frequency 1544.000 kHz RX Terr Interface G.703
Baseband Loopback OFF TX Data Phase Normal
Interface Loopback OFF RX Data Phase Normal
Loop Timing OFF Async TX Baud 110 bps
TX Data/AIS Fault NONE Async RX Baud 110 bps
RX Data/AIS Fault NONE Async TX Length 7 Bits
TX 2047 Pattern OFF Async RX Length 7 Bits
RX 2047 Pattern OFF Async TX Stop 2 Bits
TX Coding Format AMI Async RX Stop 2 Bits
RX Coding Format AMI Async TX Parity EVEN
Buffer Programming Bits Async RX Parity EVEN
Buffer Size 384 TX Overhead Type Async
Frame Structure T1 Data G.704 RX Overhead Type Async
Local AUPC
AUPC ENABLE OFF Target Noise 6.0 dB
Nominal Power +0.0 dBm Tracking Rate 0.5 dB/MIN
Minimum Power -20.0 dBm Local CL Action Hold
Maximum Power +5 dBm Remote CL Action Hold