Keysight E4428C ESG RF Programming Manual page 241

Volatile and Non–Volatile Memory (N5162A/82A)
Table 5-4 N5162A/82A Volatile (BBG) and Non–Volatile (Internal Storage and USB Media) Memory
Volatile (BBG) Memory
Option
a
N5162A/82A
651/652/654 (BBG)
019 (BBG)
a
On the N5162A/82A, 512 bytes is reserved for each waveform's header file (i.e. The largest waveform that could
be played with a N5162A/82A with Option 019 (320 MB) is: 320 MB – 512 bytes = 319,999,488 MB.)
b
For serial numbers <MY4818xxxx, US4818xxxx, and SG4818xxxx, the persistent memory value = 512 MB.
Volatile Memory and Non–Volatile Memory (E4438C and E8267D Only)
NOTE
When considering volatile memory, it is not necessary to keep track of marker data, as this
memory is consumed automatically and proportionally to the I/Q data created (i.e. 1 marker
byte for every 4 bytes of I/Q data).
On the E4438C and E8267D, the fixed file system overhead on the signal generator is used to store
directory information. When calculating the available volatile memory for waveform files it is
important to consider the fixed file system overhead for the volatile memory of your signal generator.
Table 5-5 Fixed File System Overhead
Volatile (WFM1) Memory and Fixed File Overhead
Option Size
001, 601 (BBG) 8 MSa (40 MB)
002 (BBG) 32 MSa (160 MB)
602 (BBG) 64 MSa (320 MB)
a
The expression [16 + [44 x MaxNumFiles]) has been rounded up to nearest memory block (1024 bytes). (To find the I/Q waveform sample
size, this resulting value needs to be divided by 4.)
Keysight Signal Generators Programming Guide
Size
8 MSa (40 MB)
64 MSa (320 MB)
Maximum
Number of
Files
(MaxNumFiles)
E4438C and E8267D
1024
4096
8192
Non–Volatile (Internal Storage and USB
Media) Memory
Option
Standard (N5182A)
800 MSa (4 GB)
USB Flash Drive user determined
(UFD)
Memory (Bytes) Used for
Fixed File System
a
Overhead
[16 + (44 x MaxNumFiles)]
46,080
181,248
361,472
Creating and Downloading Waveform Files
Waveform Memory
Size
b
Memory Available
for Waveform
Samples
8,377,088 Samples
33,509,120 Samples
67,018,496 Samples
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