M8190A Datasheet, PDF (11/41 Pages) Keysight Technologies – Arbitrary Waveform Generator

11 | Keysight | M8190A Arbitrary Waveform Generator - Data Sheet
Infinite playtime (continued)
Data sources
Waveform data for streaming can be retrieved from a number
of sources:
– Harddisk – typically a fast RAID drive or Solid State Drive
(SSD), which offers sufficient data throughput for continu-
ous streaming.
– Algorithmically generated – typically a pre-calculated
set of waveforms that are available in PC memory. User
software can select which waveform is used at which point
in time.
– From Digitizer – to realize capture/replay scenarios.
Thoughput and achievable bandwidth
For continuous streaming, the hardware and software on
the controlling PC must be able to deliver data fast enough
to keep up with waveform generation. On a high-end PC, a
thoughput of 500 – 600 MByte/s are achievable. In Digi-
tal Up-conversion mode, this corresponds to a modulation
bandwidth of 125 – 150 MHz (4 bytes per I/Q sample pair).
In triggered streaming mode, approx. 2 GHz modulation
bandwidth can be achieved. This is the maximum that can be
achieved in DUC mode – depending on the on/off ratio of the
signal (please refer to publication no. 5991-3937EN).
Possible
data
sources
Algorithmic
waveform
generation
in real-time
Digitizer
Internal or
external HD
Availability
The memory ping-pong and streaming functionality is
available starting with M8190A firmware Rev. 3.0. An example
program in C++ (both source and executable) is provided
with the firmware installation that realizes the streaming
functionality.
PC (external or
embedded
controller)
PCIe
x4 Gen2
M8190A
AXIe chassis
Analog
signal