SDM-300L3 Satellite Modem
Revision 1
Open Network Operations MN/SDM300L3.IOM
10–17
10.4.3 D&I
Modem
Defaults
Table 10-3
. D&I Modem Faults
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
Decoder Type
Viterbi
Mod Power Offset
0 dB
Differential Decoder
ON
Power Output
-10 dBm
Demodulator Type
Open Net
Differential Encoder
ON
IF Loopback
OFF
Modulator Type
INTELSAT Open Net
RF Loopback
OFF
Encoder Type
Viterbi
Sweep Center Freq.
0 Hz
CW Mode
Normal (OFF)
Sweep Range
60000 Hz
Mod Power Fixed
0 dB
Sweep Reacquisition
0 seconds
Mod Spectrum
Normal
BER Threshold
NONE
Demod
Spectrum
Normal
Interface
TX Clock Source
TX Terrestrial
Buffer Size
1 mS
Buffer Clock Source
Insert
Frame Structure T1 Data
G.704
TX Clock Phase
Auto
Frame Structure E1 Data
G.704
RX Clock Phase
Normal
Frame Structure T2 Data
G.743
External Reference Freq.
1544 kHz
Frame Structure E2 Data
G.742
Baseband Loopback
OFF
Loop Timing
OFF
Interface Loopback
OFF
TX Overhead Type
D&I
TX Coding Format
AMI
RX Overhead Type
D&I
RX Coding Format
AMI
TX Terr Interface
G.703
TX 2047
OFF
RX Terr Interface
G.703
RX 2047
OFF
IBS Scrambler
ON
IBS Descrambler
ON
Drop Data Format
T1
Insert Data Format
T
TX Data/AIS Fault
NONE
RX Data/AIS Fault
NONE
TX Data Phase
Normal
Buffer Programming
MS
RX Data Phase
Normal
Note:
When selecting E1_CAS or E1_CCS D&I data format, the defaults in the D&I data
channels are offset by 1 from 16 and up. When programming from E1_CAS or E1_CCS to any
other format, the D&I channels are defaulted to straight through.
