Mocomtech CDM-570L Manual Do Utilizador
CDM-570/570L Satellite Modem with Optional IP Module
Revision 4
Summary of Specifications
TURBO PRODUCT
CODEC
Rate 7/8 QPSK
Rate 7/8 8-PSK
Rate 7/8 16-QAM
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
CODEC
Rate 7/8 QPSK
Rate 7/8 8-PSK
Rate 7/8 16-QAM
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
For:
BER=10
-6
BER=10
-7
BER=10
-8
Rate 7/8 (Q, OQ)
Guaranteed Eb/No:
(typical value in
parentheses)
4.3 dB (4.0 dB)
4.4 dB (4.1 dB)
4.5 dB (4.2 dB)
Rate 7/8 (8-PSK)
Guaranteed Eb/No:
(typical value in
parentheses)
7.0 dB (6.6 dB)
7.1 dB (6.7 dB)
7.2 dB (6.8 dB)
Rate 7/8 (16-QAM)
Guaranteed Eb/No:
(typical value in
parentheses)
8.1 dB (7.7 dB)
8.2 dB (7.8 dB)
8.3 dB (7.9 dB)
TURBO PRODUCT
CODEC
Rate 0.95 QPSK
Rate 0.95 8-PSK
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
CODEC
Rate 0.95 QPSK
Rate 0.95 8-PSK
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
For:
BER=10
-6
BER=10
-7
BER=10
-8
Rate 0.95 (Q, OQ)
Guaranteed Eb/No:
Guaranteed Eb/No:
(typical value in
parentheses)
6.4 dB (6.0 dB)
6.7 dB (6.3 dB)
6.9 dB (6.5 dB)
Rate 0.95 (8-PSK)
Guaranteed Eb/No:
Guaranteed Eb/No:
(typical value in
parentheses)
9.3 dB (8.9 dB)
9.8 dB (9.4 dB)
10.3 dB (9.9 dB)
TURBO PRODUCT
CODEC
Rate 3/4 8-QAM
Rate 7/8 8-QAM
Rate 0.95 8-QAM
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
CODEC
Rate 3/4 8-QAM
Rate 7/8 8-QAM
Rate 0.95 8-QAM
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
For:
BER=10
-6
BER=10
-7
BER=10
-8
Rate 3/4 (8-QAM)
Guaranteed Eb/No:
Guaranteed Eb/No:
(typical value in
parentheses)
6.5 dB (6.1 dB)
6.8 dB (6.4 dB)
7.2 dB (6.8 dB)
Rate 7/8 (8-QAM)
Guaranteed Eb/No:
Guaranteed Eb/No:
(typical value in
parentheses)
6.6 dB (6.2 dB)
6.7 dB (6.3 dB)
6.8 dB (6.4 dB)
Rate 0.95 (8-QAM)
Guaranteed Eb/No:
(typical value in
parentheses)
9.6 dB (9.2 dB)
10.1 dB (9.7 dB)
10.6 dB (10.2 dB)
16-QAM
VITERBI/RS
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
VITERBI/RS
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
For:
BER=10
-6
BER=10
-8
16-QAM Rate 3/4
Viterbi/RS
Guaranteed Eb/No:
(typical value in
parentheses)
8.1 dB (7.5 dB)
8.6 dB (8.0 dB)
16-QAM Rate 7/8
Viterbi/RS
Guaranteed Eb/No:
(typical value in
parentheses)
9.5 dB (9.0 dB)
10.1 dB (9.5 dB)
Plesiochronous/
Doppler Buffer
Doppler Buffer
Selectable size of
± 128, 256, 512, 1024, 2048, 4096, 8192, 16384 and 32768 bits
Size selection is displayed in bits and milliseconds. Supports asymmetric operation - when buffer is
clocked from Tx clock, Rx and Tx rates do not need to be identical.
clocked from Tx clock, Rx and Tx rates do not need to be identical.
Monitor Functions
Eb/No estimate, 2 to 16 dB (
± 0.25 dB accuracy)
Corrected Bit Error Rate, 1E-3 to 1E-9
Frequency offset,
Frequency offset,
± 200 kHz range, 100 Hz resolution
Buffer fill state, in percent
Receive signal level (-20 to –90 dBm, accuracy is
Receive signal level (-20 to –90 dBm, accuracy is
± 2.5 dB)
12.3
Automatic Uplink Power Control
Operating Mode
Requires Closed Network Framed mode for transport of Eb/No information from remote modem
(EDMAC can be enabled or disabled)
(EDMAC can be enabled or disabled)
Target Eb/No range
0 to 9.9 dB at remote demod (default is 4.0 dB)
Max AUPC range
0 to 9 dB (default is 3 dB)
Monitor functions
Remote demod Eb/No and Tx power level increase
(front panel or via remote control interface)
(front panel or via remote control interface)
12–5