Ceyear 1465 Series, Programming Manual

Page: 80 / 143

3 SCPI
3.3 Instrument subsystem command
73
[:SOURce]:FM:DEViation <Deviation>
Function: This command sets FM Dev of the signal generator. It should be noted that FM Dev
varies in different frequency band.
Setting format: [:SOURce]:FM:DEViation <val>
Query format: [:SOURce]:FM:DEViation?
Parameter:
<Deviation> The relationship between current frequency and FM Dev is as follows:
1465 Current frequency FM Dev
9kHz - 250MHz 0 - 2MHz
250MHz -500MHz 0 - 1MHz
500MHz - 1GHz 0 - 2MHz
1GHz - 2GHz 0 - 4MHz
2GHz-3.2GHz 0 - 8MHz
3.2GHz - 10GHz 0 - 16MHz
10GHz-20GHz 0 - 32MHz
20GHz-40GHz 0 - 64MHz
40GHz-67GHz 0 - 128MHz
Example: :FM:DEViation 500kHz FM Dev of FM signal is 500 kHz.
Key Entry:
【 FM/ΦM 】 —>[Basic Config]—>[FM Dev]
[:SOURce]:FM:INTernal:FREQuency <Frequency>
Function: This command is used for setting the internal modulation rate for FM in the signal
generator. Through this command, the first tone can be set when FM waveform is set
to DualSinc, and the start frequency can be set when FM waveform is set to
SweepSinc. It should be noted that, when FM Source is set to External, the internal
modulation rate can not be set. For related commands, see
―
:FM:INTernal:SHAPe
‖,―
:FM:SOURce
‖.
Setting format: [:SOURce]:FM:INTernal:FREQuency <val>.
Query format: [:SOURce]:FM:INTernal:FREQuency?
Parameter:
<Frequency> The FM modulation rate ranges of different waveforms are:
Sine wave: [0.005Hz
，
10.000000000MHz],
Square wave: [0.005Hz
，
10.000000000MHz],
Triangular wave: [0.005Hz
，
10.000000000MHz],
Zigzagwave: [0.005Hz
，
10.000000000MHz],
Noise: [0.005Hz
，
10.000000000MHz],
Sweep sine: [0.01Hz
，
10.000000000MHz],
Dual sine: [0.01Hz
，
10.000000000MHz].
Example: :FM:INTernal:FREQuency 300kHz FM signal modulation rate is 300kHz.
Reset status: 0.001MHz
Key Entry:
【
FM/ΦM
】
—>[Basic Config]—>[FM Rate]
【 FM/ΦM 】 —>[SweepSinc]—> [Freq Start]