Download waveform data, <binary_block_data> means to download binary data,
<binary_block_data> is a binary data block starting with # sign, "#508192" binary
data, "5" after "#" means there are 5 characters representing data length information ,
"8192" means that there are 8192 bytes representing binary data. Each waveform
point corresponds to a binary number of two bytes (for example, the point 1024
corresponds to a binary number of 0x0400, the low byte of the data is in front, and
the high byte is in the back, so it is 0004), so the number of bytes must be an even
number.
Note: The number of arbitrary waveform points must be 4096