Downloading and Using Files
Downloads Directly into Pattern RAM (PRAM)
Chapter 4 185
Via the remote interface:
For TDMA formats, send the following SCPI commands:
[:SOURce]:RADio:<desired format>[:STATe]:ON
[:SOURce]:RADio:<desired format>:BURSt[:STATe]:ON
[:SOURce]:BURSt:SOURce INT
For custom modulation, send:[:SOURce]:RADio:CUSTOm[:STATe]:ON
To adjust symbol rate, filtering, or other parameters, send the appropriate SCPI command.
SCPI Command to Download Data in List Format
:MEMory:DATA:PRAM:LIST <uint8>[,<uint8>,<...>]
This command downloads the list-formatted data directly into PRAM. The variable <uint8>
is any of the valid 8-bit, unsigned integer values between 0 and 255, as specified by Table 4-1.
Note that each value corresponds to a unique byte/address in PRAM.
Sample Command Line
For example, to burst a FIX4 data pattern of “1100” five times, then turn the burst off for 32
data periods (assuming a 1-bit/symbol modulation format), the command is:
:MEMory:DATA:PRAM:LIST 85,21,20,20,21,21,20,20,21,21,20,20,21,21,20,20,21,
21,20,20,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
16,16,16,16,16,16,16,16,16,16,144
21 signifies data=1, burst = on (1)
20 signifies data=0, burst = on (1)
16 signifies data=unspecified, burst = off (0)
85 enables event 1 trigger signifying the beginning of the data pattern
144 signifies data=unspecified, burst = off (0), pattern repeat = on (1)
Querying the Waveform Data
Use the following SCPI command line to determine whether there is a user-defined pattern in
the PRAM:
:MEMory:DATA:PRAM?
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