Programming instructions

Downloading and Using Files
ARB Waveform Data Downloads
Chapter 4148
Bit-value and Output Power
Bit-value and output-power:
• 0 = 0 volts
• –32768 gives negative full-scale output
• 32767 gives positive full-scale output
Types of Arbitrary Waveform Generator Memory
Waveform data can be saved to volatile memory (called waveform memory or WFM1) and
non-volatile memory (called NVWFM memory). The data in waveform memory is lost
whenever the signal generator’s line power is cycled. If Option 005 is not installed, then the
signal generator provides approximately 3 Msamples of non-volatile memory. With Option 005
there is approximately 6 Gsamples of NVWFM memory available.
Waveforms stored in NVWFM memory must be moved to volatile memory in order to be
sequenced and played.
Table 4-1 IQ Data File Structure
I
o
16 bits Q
0
16 bits I
1
16 bits Q
1
16 bits
2 bytes 2 bytes 2 bytes 2 bytes
Table 4-2 Marker File Structure
4 bits unused
MSB
M
0
4 bits
LSB
4 bits unused
MSB
M
1
4 bits
LSB
1 byte 1 byte