To Use Direct Sampler Access Configurations (Option 012 Only) - Agilent Technologies 8719ES User Manual

Optimizing Measurement Results
Reducing Noise

To Use Direct Sampler Access Configurations (Option 012 Only)

Direct sampler access to both the A and B samplers can decrease the noise floor of the
analyzer.
In the standard configuration (Option 012 with all jumpers in place), the signal entering
one of the test ports passes through a coupler with 14 dB coupling before it reaches the
sampler. Thus, the input signal is reduced by approximately 14 dB before it reaches the
sampler. By using direct sampler access and inputting the signal from the DUT directly in
the A or B sampler input, you can improve the noise floor of the analyzer by 14 dB.
Figure 5-1 Increased Dynamic Range Configuration
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