
Programming Guide 3-31
ESG Family Signal Generators Remote Data Transfer
Data Downloads Directly into Pattern RAM
contain another 7 Mbits of control information, a file this size requires a signal generator
with Option UN9 and its 8 Mbyte pattern RAM. The largest amount of modulation data for
a waveform in an Option UN8 signal generator is approximately 125 kbits, which leaves
enough room for the required 875,000 control bits.
Preliminary Setup
Before downloading data, set up the digital communications format to enable the signal
generator to define the modulation format, filter, and data clock. Activating the digital
communications format after data downloads to PRAM can damage the data.
From the Front Panel Interface
To set up the TDMA format, press
Mode > desired format and toggle the format on.
To set up a custom modulation format, press
Mode > Custom and toggle the format on.
To adjust symbol rate, filtering, or other parameters, press the appropriate softkey and
adjust the value.
Via the Remote Interface
For TDMA formats, send the SCPI command:
[:SOURce]:RADio:<desired format>[:STATe]:ON
Or for custom modulation send:[:SOURce]:RADio:CUSTom[:STATe]:ON
To adjust symbol rate, filtering, or other parameters, execute the appropriate SCPI
command.
SCPI Command to Download Data in Block Format
:MEMory:DATA:PRAM:BLOCk <datablock>
This command downloads the block-formatted data directly into pattern RAM.
Sample Command Line
A sample command line:
:MEMory:DATA:PRAM:BLOCk #ABC
A the number of decimal digits to follow in B.
B a decimal number specifying the number of data bytes in C.
C the binary user file data.
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