User's Manual

47
1.4 Transmitter Command List
Type ‘o’ messages for Modulation commands
Function
R/W
Block
Command
Data
Type
Set
Modulation
IF output
r/w
o
out
1 byte
0 OFF
1 COFDM
int
Set Narrow
Band
Modulation
FEC
r/w
o
fec
1 byte
1 = 2/3
2 = 1/3
int
Set Narrow
Band
Modulation
Guard
Interval
r/w
o
gua
1 byte
1 = 1/16
2 = 1/8
int
Set Narrow
Band
COFDM
mode
r/w
o
mod
1 byte
0 = QPSK
1 = 16 QAM
2 = BPSK
3 = 8PSK
int
Set
Modulation
Freq
r/w
o
fre
Set Frequency in MHz,
decimal point allowed.
double
Spectrum
Inversion
r/w
o
spe
1 byte
0 = Normal
1 = Inverted
int
COFDM
Bandwidth
r/w
o
wid
0 = 6MHz
1 = 7MHz
2 = 8MHz
3 = 2.5MHz
4 = 1.25MHz
5 = 625kHz
list
Output level
attenuation
high
r/w
o
lev
Default level is 0
Value 0 to 32 1dB
steps
int
Output High
Low switch
r/w
o
hls
0 = low level
1 = high level (default)
int
Output level
attenuation
low
r/w
o
llv
Default level is 32
Value 0 to 32 0.25dB
steps
int
DVB-T FEC
r/w
o
dfe
0 = 1/2
1 = 2/3
2 = 3/4
3 = 5/6
4 = 7/8
int
DVB-T
Guard
r/w
o
dgu
0 = 1/32
1 = 1/16
2 = 1/8
3 = 1/4
int
DVB-T mode
r/w
o
dmo
0 = QPSK
1 = 16QAM
2 = 64QAM
int
DVB-T 4K
Offset
r/w
o
4ko
0 = none
1 = +4KHz
2 = -4KHz
Int
Range Mode
Preset
r/w
o
txm
0 = none
selected(default)
1 = short range
2 = medium range
3 = long range
4 = ultra long range
5 = extra long range 1
6 = extra long range 2
int
IQ Control
r/w
o
iqc
For Engineering Use
Only
int
IQ Gain
r/w
o
iga
For Engineering Use
Only
int