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SDM-100A Satellite Modem
Rev. 0
Parameter 20 (p20): Demodulator preset B assignment
(ref. "ADRB_" command).
p20 = nnnn_mmm.mmm, code rate/data rate in kbit/s.
Parameter 21 (p21): Demodulator preset C assignment
(ref. "ADRC_" command).
p21 = nnnn_mmm.mmm, code rate/data rate in kbit/s.
Parameter 22 (p22): Demodulator preset D assignment
(ref. "ADRD_" command).
p22 = nnnn_mmm.mmm, code rate/data rate in kbit/s.
Parameter 23 (p23): Demodulator preset V assignment
(ref. "ADRV_" command).
p23 = nnnn_mmm.mmm, code rate/data rate in kbit/s.
Parameter 24 (p24): Descrambler enable (ref. "DE_"
command).
p24 = n, where 'n' is '0' (off) or '1' (on).
Parameter 25 (p25): Differential decoder enable (ref.
"DDEC_" command).
p25 = n, where 'n' is '0' (off) or '1' (on).
Parameter 26 (p26): RF loopback (ref. "RFL_" command).
p26 = n, where 'n' is '0' (off) or '1' (on).
Parameter 27 (p27): IF loopback (ref. "IFL_" command).
p27 = n, where 'n' is '0' (off) or '1' (on).
Parameter 28 (p28): Sweep center frequency (ref. "SCF_"
command).
p28 = snnnnn, sweep center frequency in Hz.
Parameter 29 (p29): Sweep width range (ref. "SWR_"
command).
p29 = nnnnn, sweep range in Hz.
Parameter 30 (p30): BER threshold (ref. "BERT_"
command).
p30 = xxxx, BER threshold.
Parameter 31 (p31): Demodulator type (ref. "DT_"
command).
p31 = n, where 'n' is '0' (EFD), '1' (INTL), '2' (CSC), or
'3' (FDC).
Parameter 32 (p32): Demodulator decoder type (ref.
"DDT_" command).
p32 = n, where 'n' is '0' (SEQ) or '1' (VIT).
Parameter 33 (p33): Receive BPSK Data Ordering (ref.
"RDA_" command).
p33 = n, where 'n' is '0' (NRM) or '1' (INV).
Parameter 34 (p34): Transmit clock source (ref. "TC_"
command).
p34 = n, where 'n' is '0' (INT), '1' (REF), or '2' (EXT).
Parameter 35 (p35): Transmit clock phase (ref. "TCP_"
command).
p35 = n, where 'n' is '0' (NRM), '1' (INV), or '2' (AUTO).
Parameter 36 (p36): Buffer clock source (ref. "BC_"
command).
p36 = n, where 'n' is '0' (INT), '1' (REF), '2' (EXT), or '3'
(SAT).
Parameter 37 (p37): Receive clock phase (ref. "RCP_"
command).
p37 = n, where 'n' is '0' (NRM) or '1' (INV).
Parameter 38 (p38): Baseband loopback (ref. "BBL_"
command).
p38 = n, where 'n' is '0' (off) or '1' (on).
Parameter 39 (p39): Interface Buffer Programming (ref.
"IBP_" command).
p39 = n, where 'n' is '0' (BITS ) or '1' (MS).
Parameter 40 (p40): Interface buffer size (ref. "IBS_"
command).
p40 = nnnnnn, buffer size in bits or milli seconds.
Parameter 41 (p41): Modem operation mode (ref. "MOM_"
command).
p41 = n, where 'n' is '1' (TX_ONLY), '2' (RX_ONLY), or
'3' (DUPLEX).
Parameter 42 (p42): MODEM REMOTE/LOCAL mode.
p42 = n, where 'n' is '0' (LOCAL) or '1' (REMOTE).
Parameter 43 (p43): ADPCM Interface Programming (ref.
Remote Control Operation
A–23
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