152 Chapter 4
Downloading and Using Files
Types of Memory
Types of Memory
The signal generator has two types of memory:
• Volatile Memory: Data stored in volatile memory cannot be recovered if it is overwritten, or if the
power is cycled.
Signal generators with the Option 002 internal baseband generator have 32 megasamples (160 MB) of
volatile memory. Option 602 has 64 megasamples (320 MB) of volatile memory. This memory is
partitioned as follows:
— Option 002: 128 megabytes of waveform memory (WFM1)
Option 602: 256 megabytes of waveform memory (WFM1)
WFM1 data is stored in the signal generator’s /user/bbg1/waveform/ directory.
The bbg1 directory does not share space with other types of file directories, such as bit, binary, and
state.
— Option 002: 32 megabytes of marker memory (MKR1)
Option 602: 64 megabytes of marker memory (MKR1)
MKR1 data is stored in the signal generator’s /user/bbg1/markers/ directory.
• Non-volatile Memory: Data stored in non-volatile memory remains until you delete it.
Signal generators without an internal hard drive (Option 005) have 3 megasamples (15 MB) of
non-volatile storage.
Signal generators with the optional internal hard drive have approximately 1 gigasample (6 GB) of
non-volatile storage.
Unlike volatile memory, non-volatile memory is not partitioned; non-volatile waveform memory
(NVWFM) and non-volatile marker memory (NVMKR), share the same space (along with bit, binary, and
state directories).
NVWFM data is stored in the signal generator’s /user/waveform/ directory.
NVMKR data is stored in the signal generator’s /user/markers/ directory.
NOTE To be sequenced and played, waveforms stored in non-volatile waveform memory
(NVWFM) must be moved to volatile waveform memory (WFM1).
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