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A.1.5.4
IBS Modem Defaults
Refer to Table A-18 for IBS modem defaults.
Data Rate
TX Rate A
TX Rate B
TX Rate C
TX Rate D
TX Rate V
IF Frequency
IF Output
Mod Power Offset
Power Output
Differential Encoder
Modulator Type
Encoder Type
CW Mode
Mod Power Fixed
Mod Spectrum
TX Clock Source
Buffer Clock Source
TX Clock Phase
RX Clock Phase
External Reference Freq.
Baseband Loopback
Interface Loopback
TX Coding Format
RX Coding Format
TX 2047
RX 2047
TX Data/AIS Fault
RX Data/AIS Fault
Buffer Programming
A–54
Table A-18. IBS Modem Defaults
Modulator
A
64 kbit/s, QPSK 1/2
256 kbit/s, QPSK 1/2
768 kbit/s, QPSK 1/2
2048 kbit/s, QPSK 1/2
128 kbit/s, QPSK 1/2
70 MHz
OFF
0 dB
-10 dBm
(see Note)
ON
Intelsat Open Net
Viterbi
Normal (OFF)
0 dB
Normal
TX Terrestrial
Receive Satellite
Auto
Normal
1544 kHz
OFF
OFF
AMI
AMI
OFF
OFF
NONE
NONE
Bits
Demodulator
Data Rate
RX Rate A
RX Rate B
RX Rate C
RX Rate D
RX Rate V
IF Frequency
Decoder Type
Differential Decoder
Demodulator Type
IF Loopback
RF Loopback
Sweep Center Freq.
Sweep Range
Sweep Reacquisition
BER Threshold
Demod Spectrum
Interface
Buffer Size
IBS Scrambler
IBS Descrambler
Frame Structure T1 Data
Frame Structure E1 Data
Frame Structure T2 Data
Frame Structure E2 Data
Loop Timing
TX Overhead Type
RX Overhead Type
TX Terr Interface
RX Terr Interface
TX Data Phase
RX Data Phase
SDM-300A Satellite Modem
A
64 kbit/s, QPSK 1/2
256 kbit/s, QPSK 1/2
768 kbit/s, QPSK 1/2
2048 kbit/s, QPSK 1/2
128 kbit/s, QPSK 1/2
70 MHz
Viterbi
ON
Intelsat Open Net
OFF
OFF
0 Hz
60000 Hz
0 seconds
NONE
Normal
384
ON
ON
G.704
G.704
G.743
G.742
OFF
IBS
IBS
G.703
G.703
Normal
Normal
Rev. 4
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