344 Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide
Creating and Downloading User–Data Files
User File Data (Bit/Binary) Downloads
5. At the ftp prompt, type the desired command:
— <file_name1> is the name of the file as it appears in the signal
generator’s directory.
— <file_name> is the name of the file as it appears in the PC/UNIX
current directory.
— <directory> is the signal generator’s BIT or BIN directory.
6. At the ftp prompt, type: bye
7. At the command prompt, type: exit
Real–Time Custom High Data Rates
Custom has two modes for processing data: serial and parallel. When the data
bit rate exceeds 50 Mbps, the signal generator processes data in parallel
mode, which means processing the data symbol by symbol versus bit by bit
(serial). This capability exists in only the Custom format when using a
continuous data stream. This means that it does not apply to a downloaded
PRAM file type (covered later in this chapter).
In parallel mode, for a 256QAM modulation scheme, Custom has the capability
to reach a data rate of up to 400 Mbps. The FIR filter width is what determines
the data rate. The following table shows the maximum data rate for each
modulation type. Because the signal generator’s maximum symbol rate is 50
Msps, a modulation scheme that has only 1 bit per symbol is always processed
in serial mode.
To Get a File From the Signal Generator
get /user/<directory>/<file_name1> <file_name>
To Place a File in the Signal Generator
put <file_name> /user/<directory>/<file_name1>
Modulation Type Bit Rate Range for Internal Data (bit rate = symbol rate x bits per symbol)
16 Symbol Wide FIR
Filter
32 Symbol Wide FIR
Filter
64 Symbol Wide FIR
Filter
BPSK, 2FSK, MSK 1bps–50Mbps 1bps–25 Mbps 1bps–12.5Mbps
To Next Page
Loading...
Need help?
General
