Keysight Technologies M8131A, Руководство пользователя

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Keysight M8131A 16/32 GSa/s Digitizer User’s Guide 63
M8131A User Interface 3
• DDC Mode - The DDC (Digital Down Conversion) mode is available
for only 16 GSa/s sample rate.
• Decimation Factor - The decimation factor depends upon the sample
rate and mode. The following decimation factors are available:
• Acquisition Mode - This defines how the acquisition of samples should
be done. The only possible choice currently is Not-Segmented, which
means that the length of output sampled vector is defined by:
• Capture Settings - The Caption Settings pane displays the following
options when the option Not Segmented is selected in the Acquisition
Mode drop-down list.
• Full Memory Size - Sets the length of waveform to the maximum
available memory. Available when the operating mode is selected as
Capturing.
• Record Time - The captured waveform has a length of sample-rate
(GSa/s) * record-length (sec).
As an example, 1 usec is equivalent to 16000 samples.
• Num. of Samples - Sets the number of samples.
Channel Parameters
• Channel 1/2/3/4 - Selects the channel. The availability of channels
depends upon the sample rate. For the 16 GSa/s sample rate, all four
channels are available. However, for the 32 GSa/s sample rate, only
two channels (Channel 1 & 2) are available.
• Display On: Turns on or off the waveform memories for corresponding
channel number and display its content in trace panel(s). The “Run”
capture button is functional only when at least one channel is selected.
Sample Rate Mode Decimation Factor
16 GSa/s Direct 1, 2, & 4
16 GSa/s DDC 32, 64, 128, & 256
32 GSa/s Direct 1
NOTE
With option 01x the minimum decimation factor is 4, i.e. the effective
maximum sample rate is 4GSa/s.