The software is pretty simple, configure the UART at 9600,N,8,2 (yes, 2 stop bits required, cflag |= CSTOPB) then send the following SCPI commands:

SYSTEM:REMOTE

*RST

*CLS

DISP:TEXT 'MILSTD-1553'

FORM:BORD SWAP

DATA:DAC VOLATILE, 

<array of 800 CSV data points>

VOLT 10

FREQ 12500

FUNC USER VOLATILE

FUNC:SHAP USER