Comtech EF Data SDM-650B - Manual (Page 337)

SDM-650B Satellite Modem Trojan Interface
Rev. 5 G–41
Parameter 15 (p15): Demodulator filter A assignment.
p15 = nnn_mmmm.m, where “nnn” is the code rate, and “mmmm.m” is the data rate in
kbit/s.
Parameter 16 (p16): Demodulator filter B assignment.
p16 = nnn_mmmm.m, where “nnn” is the code rate, and “mmmm.m” is the data rate in
kbit/s.
Parameter 17 (p17): Demodulator filter C assignment.
p17 = nnn_mmmm.m, where “nnn” is the code rate, and “mmmm.m” is the data rate in
kbit/s.
Parameter 18 (p18): Demodulator filter D assignment.
p18 = nnn_mmmm.m, where “nnn” is the code rate, and “mmmm.m” is the data rate in
kbit/s.
Parameter 19 (p19): Descrambler enable ON/OFF.
p19 = n, where “n” is “0” to indicate off or “1” to indicate on.
Parameter 20 (p20): Receive clock (Invert/Normal).
p20 = n, where “n” is “0” or “1” (“0” = NRM, “1” = INV).
Parameter 21 (p21): Baseband loopback ON/OFF.
p21 = n, where “n” is “0” to indicate off, or “1” to indicate on.
Parameter 22 (p22): RF loopback ON/OFF.
p22 = n, where “n” is “0” to indicate off, or “1” to indicate on.
Parameter 23 (p23): Not implemented.
p23 = “,”.
Parameter 24 (p24): BER threshold.
p24 = nnnn, where “nnnn” is the currently programmed BER threshold in the same
format as the single command “BERT_”.
Parameter 25 (p25): Sweep Reacquisition.
p25 = nnn, where “nnn” is the reacquisition parameter in seconds.
Parameter 26 (p26): IF loopback ON/OFF.
p26 = n, where “n” is “0” to indicate off, or “1” to indicate on.
Parameter 27 (p27): MODEM REMOTE/LOCAL mode.
p27 = n, where “n” is “0” to indicate local or “1” to indicate remote.
(See Note) Parameter 28 (p28): Sweep center programmed.
p28 = snnnnn, where “s” is “+” or “-”, and “nnnnn” is the sweep center currently
programmed.
(See Note) Parameter 29 (p29): Sweep width range.
p29 = nnnnn, where “nnnnn” is in the range of 0 to 50000 Hz.
(See Note) Parameter 30 (p30): Sweep direction.
p30 = n, where “n” is “+” for positive or “-” for negative sweep direction.
Parameter 31 (p31): External Reference Frequency.
p31 = nnnnn, where “nnnnn” is the external reference frequency in kHz.
Parameter 32 (p32): Interface Reference Clock.
p31 = n, where “n” is “0”, “1”, “2”, or “3” (“0” = TXC, “1” = RXC, “2” = EXT, “3” =
INT).
Parameter 33 (p33): Interface Buffer Depth.
p33 = nnnnn, where “nnnnn” is “512”, ”1024”, ”2048”, ”4096”, ”8192”, ”16384”, or
”32768”.
Note: Parameters 28, 29, and 30 are only returned when fast acquisition is enabled. See the
“FAM_” command definition.