Agilent Technologies N5183A MXG, N5181A/82A, E8663B manual Memory Allocation, Volatile Memory

Creating and Downloading Waveform Files

Waveform Memory

Figure 5-1

Root directory

E443xB Volatile waveform data1

ARBI ARBQ

USER

E443xB Non-volatile waveform data1

NVARBI NVARBQ

Agilent MXG (Only): 4

NONVOLATILE

MXG (only) USB media:

File listing with extensions1, 2

Non-volatile Waveform sequences

SEQ

Non-volatile waveform data (internal storage1, 3)

HEADER MARKERS WAVEFORM SECUREWAVE

Volatile waveform directory

BBG1

Volatile waveform data

HEADER MARKERS WAVEFORM SECUREWAVE

1For information on using the E443xB directories, see “Downloading E443xB Signal Generator Files” on page 228.

2The Agilent MXG uses an optional “USB media” to store non-volatile waveform data.

3The Agilent MXG internal non-volatile memory is referred to as “internal storage”.

4This NONVOLATILE directory shows the files with the same extensions as the USB media and is useful with ftp.

Memory Allocation

Volatile Memory

The signal generator allocates volatile memory in blocks of 1024 bytes. For example, a waveform file with 60 samples (the minimum number of samples) has 300 bytes (5 bytes per sample ⋅ 60 samples), but the signal generator allocates 1024 bytes of memory. If a waveform is too large to fit into 1024 bytes, the signal generator allocates additional memory in multiples of 1024 bytes. For example, the signal generator allocates 3072 bytes of memory for a waveform with 500 samples (2500 bytes).

3 x 1024 bytes = 3072 bytes of memory

200 Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide