Table 3: Real Time Digital Signal Processing; Table 4: Sequencer - Tektronix AWG5200 Series Technical Reference

Table 3: Real time digital signal processing

Characteristics
Double Data Rate Interpolation (DDR
Mode)
Digital Up-conversion (DIGUP license
required)
Waveform interpolation
Inverse SINC filter

Table 4: Sequencer

Characteristics
Number of steps
Maximum repeat count
AWG5200 Series Technical Reference
Description
Enabling DDR mode increases the output sample rate to 5 to 10 GS/s (2*fclk) and
interpolates the input sample data by 2X to match the output rate. 2X interpolation is
required for sample rates above 5.0 GS/s.
With DDR enabled, the output image moves from (fclk - fout) to (2*fclk - fout). Because
the input data rate does not increase, the output bandwidth remains (fclk/2).
DDR is most useful when combined with digital up-conversion which allows the user
to specify the output center frequency up to the DDR Nyquist frequency. When the
waveform is a traditional, real valued, waveform (not IQ), enabling DDR applies a low
pass filter at a frequency just below (fclk/2) so that no signal is generate between
(fclk/2) and (2*fclk - fclk/2).
The DAC system in each channel includes a digital IQ modulator and numerically
controlled oscillator (NCO) that provides digital up-conversion to a specified carrier
frequency
Digital up-conversion requires an IQ input waveform. In the IQ waveform I and Q
samples alternate in pairs or groups depending on the interpolation selection.
Digital up-conversion can only be used with sample rates between 2.5 and 5 GS/s. Use
interpolation when a lower waveform sample rate is needed.
Real time interpolation of IQ (complex) waveforms is supported independently on each
channel during play out.
Supported interpolation rates are 2x and 4x.
Only IQ (complex) waveforms can be interpolated. The interpolation factor refers to the
sample rate of the complex pair of points relative to the global instrument sample rate
set by the clock. For example if the sample rate is set to 5 GS/s and the interpolation
factor is 2, then the waveform sample rate of both I and Q samples is 2.5 GS/s. DDR
interpolation offers an additional doubling of the sample rate.
Real time correction of the sinx/x frequency roll off can be enabled or disabled
independently on each channel.
Description
16,384
14 address bits. Numbers are zero-0 based in HW (0 to -16383).
1048576 (2 )
20
Specifications
3