SLM-5650B Satellite Modem
Revision 2
Introduction 1–19 MN-SLM-5650B
Table 1-10. Doppler Requirements
Parameter C-Band X-Band Ku-Band Ka-Band
Doppler Shift in Hz ± 2475 ± 3535 ± 6045 ± 11,810
Doppler Rate of Change in Hz/sec
Doppler Acceleration in Hz/sec
2
± 243 ± 290 ± 526 ± 1124
1.4.1.2 Data Quality Performance
1.4.1.2.1 OM-73 Compatible Mode Performance
Operating in the OM-73-compatible mode, SLM-5650B BER vs. E
b
/N
0
performance with
differential encoding and data scrambling enabled does not exceed values shown in Table 1-11
through Table 1-16.
1.4.1.2.2 MIL-STD-188-165A Compatible Mode Performance
Operating with BPSK, QPSK, or OQPSK modulation in the MIL-STD-188-165A compatible mode,
SLM-5650B BER vs. E
b
/N
0
performance with differential encoding and data scrambling enabled will
not exceed values shown in Table 1-11 (without Reed-Solomon) or Table 1-12 (with Reed-
Solomon) tested in an IF back-to-back configuration over the BER range 5 x 10
-3
to 1 x 10
-7
.
Operating with 8PSK modulation and rate 2/3 pragmatic Trellis coding (without Reed-Solomon
outer coding), SLM-5650B BER vs. E
b
/N
0
performance is less than or equal to the values shown
in Table 1-13 when tested in an IF back-to-back configuration.
Operating with 8PSK modulation, rate 2/3 pragmatic Trellis coding, and Reed-Solomon (219,201)
outer coding, SLM-5650B BER vs. E
b
/N
0
performance is better than or equal to the values shown
in Table 1-14 when tested in an IF back-to-back configuration.
1.4.1.2.3 IESS-308 Compatible Mode Performance
When operating in the IESS-308 Compatible Mode, SLM-5650B BER vs. E
b
/N
0
performance is as
specified in IESS-308.
1.4.1.2.4 IESS-309 Compatible Mode Performance
When operating in the IESS-309 Compatible Mode, SLM-5650B BER vs. E
b
/N
0
performance is as
specified in IESS-309.
1.4.1.2.5 IESS-310 Compatible Mode Performance
When operating in the IESS-310 Compatible Mode, SLM-5650B BER vs. E
b
/N
0
performance is as
specified in IESS-310.
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