Product specifications

CDD-562L/564 Demodulator with IP Module Revision 1
Introduction MN/CDD564L.IOM
1–14
1.5.5 BER (Bit Error Rate)
IMPORTANT NOTE: Starting with Release 1.4.1 of the CDM-570/570L firmware, the maximum sysmbol rate has been increased from 2.5 to
3.0 Msysmbol/sec. This has been done without modification to the hardware and as a consequence there may be a small degradation in
BER versus Eb/No performance for rates above 2.5 Msymbols/sec. The degradation is as follows:
Rates from 2.5 to 2.65 Msps: degradation < 0.1 dB
Rates from 2.65 to 2.80 Msps: degradation < 0.2 dB
Rates from 2.80 to 3.00 Msps: degradation < 0.3 dB
TURBO PRODUCT CODEC
Rate 3/4 QPSK
Rate 3/4 8-PSK
Rate 3/4 16-QAM
(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
(Q)
Guaranteed Eb/No:
(typical value in
parentheses)
3.8dB (3.4dB)
4.1dB (3.7dB)
4.4dB (4.0dB)
Rate 3/4
(8-PSK)
Guaranteed Eb/No:
(typical value in
parentheses)
6.2dB (5.8dB)
6.4dB (6.0dB)
6.8dB (6.3dB)
Rate 3/4
(16-QAM)
Guaranteed Eb/No:
(typical value in
parentheses)
7.4dB (7.0dB)
7.8dB (7.3dB)
8.2dB (7.7dB)
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)
For:
BER=10
-6
BER=10
-7
BER=10
-8
Rate 7/8 (Q)
Guaranteed Eb/No:
(typical value in
parentheses)
4.3dB (4.0 dB)
4.4dB (4.1 dB)
4.5dB (4.2 dB)
Rate 7/8 (8-PSK)
Guaranteed Eb/No:
(typical value in
parentheses)
7.0dB (6.6dB)
7.1dB (6.7dB)
7.2dB (6.8dB)
Rate 7/8 (16-QAM)
Guaranteed Eb/No:
(typical value in
parentheses)
8.1dB (7.7dB)
8.2dB (7.8dB)
8.3dB (7.9dB)
TURBO PRODUCT CODEC
Rate 0.95 QPSK
Rate 0.95 (8-PSK)
(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)
Guaranteed Eb/No:
(typical value in
parentheses)
6.4dB (6.0dB)
6.7dB (6.3dB)
6.9dB (6.5dB)
Rate 0.95
(8-PSK)
Guaranteed Eb/No:
(typical value in
parentheses)
9.3dB (8.9dB)
9.8dB (9.4dB)
10.3dB (9.9dB)
Monitor Functions
Eb/No estimate, 2 to 16 dB (
±
0.25 dB accuracy)
Corrected Bit Error Rate, 1E-3 to 1E-9
Frequency offset, ± 200 kHz range, 100 Hz resolution
Buffer fill state, in percent
Receive signal level (-20 to –90 dBm, accuracy is ± 2.5 dB)