RS232 Communication
ProTelevision Technologies
PT 5780 DVB-T Modulator
Instruction Manual
Revision 3.11
6-10
•
OUTPut:IF:LEVel
This command is used to set the IF level in the IF version of modulator. The level range
possible is –2 to 8 dB in 0.1 dB steps. Note that the command :OUTPut:LEVel could also be
used – see this command description below.
Example
OUTP:IF:LEV –1.0
Set level to –1dB.
OUTP:IF:LEV?
Response: -1.0
•
OUTPut:RF:FREQency
This command is used to set the RF value in the RF version of modulator. The frequency range
possible is 30 to 1000 MHz in 1 Hz steps. Values entered can be different units; Hertz, kHz,
MHz, GHz or “to the power of” format. The response units are always Hertz. Note that the
command :OUTPut:FREQquency could also be used – see this command description below.
Example of Hertz format:
OUTP:RF:FREQ 64025
000
Set RF to 64,025 MHz.
OUTP:RF:FREQ
64e6
Set RF to 64 MHz.
OUTP:RF:FREQ
64000khz
Set RF to 64 MHz.
OUTP:RF:FREQ
64.025mhz
Set RF to 64,025 MHz.
OUTP:RF:FREQ?
Response
: 64025000
•
OUTPut:RF:LEVel
This command is used to set the RF level in the RF version of modulator. The level range
possible is –10 to 0 dB in 0.1 dB steps. Note that the command :OUTPut:LEVel could also be
used – see this command description below.
Example
OUTP:RF:LEV –1.5
Set RF level to -1.5 dB.
OUTP:RF:LEV?
Response
: -1.50
•
OUTPut:FREQency
Command to set the output frequency value. The output frequency set would be the IF value for
the IF version of the modulator and RF value for the RF version
Example for IF system:
OUTP:FREQ 36.150mhz
Set the IF frequency to 36.150 MHz.
OUTP:FREQ?
Response:
36150000
Example for RF system:
OUTP:FREQ 474mhz
Set the RF frequency to 474.00 MHz.
OUTP:FREQ?
Response:
474000000
•
OUTPut:LEVel
Command to set the output level. The output level set would be the IF level for the IF version of
the modulator and the RF level for RF version. The level is set in dB relative to nominal output
level.
Example
OUTP:LEV 0.0
Set level to 0 dB.
OUTP:LEV?
Response:
0.0
Summary of Contents for PT 5780
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