3152B User Manual
Publication No. 980935 Rev. A
5-76 Programming Reference
EADS North America Test and Services
Response
The 3152B returns the current modulating depth value.
AM:EXEcute
HS Syntax: 07820
Description
This command computes the AM waveform and starts AM generation. Note that this command is available for
compatibility with the legacy 3152A. For new applications, use the MOD:TYPE AM command.
FM Modulation
Programming
Use the following commands for programming the FM parameters.
FM modulation is internal. There are two types of waveforms that can
be used as the modulating waveforms: Standard and Arbitrary. The
standard waveforms are built in a library of waveforms and could be
used anytime without external control. The arbitrary waveforms must
be loaded into a special FM arbitrary waveform memory and only then
can be used as a modulating waveform.
FM:DEViation <deviation>(?)
HS Syntax: 0075A<float>(?)
Description
This programs the deviation range around the carrier frequency. The deviation range is always symmetrical
about the carrier frequency. If you need a non-symmetrical deviation range then you can use the arbitrary FM
composer screen or an external utility to design such a waveform.
Parameters
Name
Range
Type
Default
Description
<deviation>
10e-3 to
100e6
Numeric
100e3
Programs the deviation range around the carrier
frequency in units of Hz.
Response
The 3152B returns the current frequency deviation value. The returned value will be in scientific notation (for
example: 100mHz would be returned as 100e-3 – positive numbers are unsigned).
FM:FUNCtion:SHAPe {SINusoid|TRIangle|SQUare|RAMP|ARB}(?)
HS Syntax: 0078A<1|2|3|4|5>(?)
Description
This command selects one of the following waveform shapes as the active modulating waveform.
Parameters
Name
Type
Default
Description
SINusoid
Discrete
SIN
Selects the sine shape as the modulating waveform
TRIangle
Discrete
Select the triangular shape as the modulating
waveform.
SQUare
Discrete
Select the square shape as the modulating waveform.
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