Specifications

3-24 Programming Guide
Remote Data Transfer ESG Family Signal Generators
FIR Filter Coefficient Data Downloads
Data Volatility
Downloaded FIR filter coefficient data is nonvolatile. It is stored to the instrument’s
memory catalog.
This data will survive a line power cycle. It will remain in the memory catalog until you
delete the file, or until the signal generator’s internal battery expires.
Downloading FIR Filter Coefficient Data
Preliminary Setup
No preliminary setup is required to download FIR filter coefficient data.
SCPI Command to Download FIR Filter Coefficients
Use the following SCPI command line to download list data from the controller to the
signal generator’s FIR memory catalog:
:MEMory:DATA:FIR "<file name>",osr,coefficient{,coefficient}
Querying the FIR Filter Coefficient Data
Use the following SCPI command line to upload list data from the FIR memory catalog to
the controller:
:MEMory:DATA:FIR? "<file name>"
Sample Command Line
For example, to download a typical set of FIR filter coefficient values, the command will
look like this:
:MEMory:DATA:FIR "FIR1",4,0,0,0,0,0,0.000001,0.000012,0.000132,0.001101,
0.006743,0.030588,0.103676,0.265790,0.523849,0.809508,1,1,0.809508,0.52384
9,0.265790,0.103676,0.030588,0.006743,0.001101,0.000132,0.000012,0.000001,
0,0,0,0,0
FIR1 assigns the name FIR1 to the associated OSR and coefficient values.
The file is then represented with this name in the FIR File catalog.
4 specifies the oversample ratio.
0,0,0,0,0,
0.000001,... represent FIR filter coefficients.
Selecting Downloaded User FIR Filters as the Active Filter
From the Front Panel
To select the downloaded FIR filter data as the active filter for a TDMA format, press
Mode > TDMA > desired format > Modify Standard > Filter > Select > User FIR. Highlight the
desired file in the catalog of FIR files and press
Select File.