RS-232 Remote Control Protocol
Page 5-12
Reference Guide: SM6610, SM6615, SM6620 and SM6625 Satellite Modulators
ST.RE.E10152.2
Symbol
rate
Returns current symbol rate in units of 1 symbol/s
Byte 1: Symbol rate bits (31..24)
Byte 2: Symbol rate bits (23..16)
Byte 3: Symbol rate bits (15..8)
Byte 4: Symbol rate bits (7..0)
e.g. 0x01C9C380 = 30 Msymbol/s
4
FEC rate
0x03 - 1/2
0x04 - 2/3
0x05 - 3/4
0x06 - 5/6
0x07 - 7/8
0x08 - 8/9
1
Modulation/coding mode
0x01 - DVB
1
Modulation format
0x00 - QPSK
0x01 - BPSK
0x02 - 8PSK
0x03 - 16QAM
1
Spectrum sense
0x00 - Normal
0x01 - Inverted
1
Spectrum roll-off factor (Alpha)
0x02 - 20%
0x03 - 25%
0x04 - 30%
0x05 - 35%
1
Modulation On/Off
0x00 - Off
0x01 - On
1
Reserved Ignore
value
2
Reserved Ignore
value
1
IF Power
Set IF power in 0.1 dB steps
Byte 1: IF Power bits (15..8)
Byte 2: IF Power bits (7..0)
Value as signed 16-bit integer.
e.g.: 0x000A = 1.0 dBm,
0xFFFF =
−
0.1 dBm
2
IF Frequency
Byte 1: Frequency bits (23..16)
Byte 2: Frequency bits (15..8)
Byte 3: Frequency bits (7..0)
e.g.: 0x11170 = 70 MHz
3
General Control
Bit 0
1
1
0 - SW reset
Normal
Enabled
1..7 - Reserved
Ignore value
Reserved Ignore
value
2
Reserved
Ignore
value
1
Reserved
Ignore
value
1
IF Carrier Control
0x01 - IF Carrier Off
0x02 - IF Carrier On
1
Rate Adaptation Control
0x00 - Off
0x01 - On
1
