Comtech EF Data SDM-300A - Manual (Page 204)

SDM-300A Satellite Modem Revision 6
Front Panel Operation MN/SDM300A.IOM
5–110
5.5 Custom Modem Defaults
Note: The following parameters do not revert to default settings after a hard reset:
• Address/Parity/Baud Rate • EXT AGC Max Power
• Remote Type • Display Contrast
• EXT AGC MIN Power
Table 5-3. Custom Modem Defaults
Modulator Demodulator
Data Rate A Date Rate A
TX Rate A 64 kbps, QPSK 1/2 RX Rate A 64 kbps, QPSK 1/2
TX Rate B 128 kbps, QPSK 1/2 RX Rate B 128 kbps, QPSK 1/2
TX Rate C 256 kbps, QPSK 1/2 RX Rate C 256 kbps, QPSK 1/2
TX Rate D 512 kbps, QPSK 1/2 RX Rate D 512 kbps, QPSK 1/2
TX Rate V 38.4 kbps, QPSK 1/2 RX Rate V 38.4 kbps, QPSK 1/2
IF Frequency 70 MHz IF Frequency 70 MHz
IF Output Off Descrambler On
Power Output 0.0 dBm Differential Encoder On
Scrambler On RF Loopback Off
Differential Encoder On IF Loopback Off
Carrier Mode Normal-Modulated BER Threshold None
Modem Reference Internal Sweep Center 0 Hz
RS Encoder Off Sweep Range 60000 Hz
Reacquisition 0 seconds
RS Decoder Off
Interface
TX Clock Source TX Terrestrial RX Coding Format AMI
TX Clock Phase Auto Channel, Level (TX/RX) -5 dBm
EXT-CLK Frequency 1544 kHz Drop Format T1
Buffer Clock RX (Satellite) Insert Format T1
Buffer Size 384 bit/s or 6 mseconds Drop SAT Channel Terr, others T-Slot Terr
RX Clock Phase Normal Insert SAT Channel Terr, other T-Slot Terr
B-Band Loopback Off ASYNC TX Baud 110 kbps
Interface Loopback Off ASYNC RX Baud 110 kbps
Loop Timing Off ASYNC TX Length 7 bit/s
TX Data Fault None ASYNC RX Length 7 bit/s
RX Data Fault None ASYNC TX Stop 2 bits
TX 2047 Pattern Off ASYNC RX Stop 2 bits
RX 2047 Pattern Off ASYNC TX Parity Even
TX Coding Format AMI ASYNC RX Parity Even