Measurement instrument having time, frequency and logic domain channels
AssigneeKeysight Technologies, Inc.
InventorKen A. Nishimura
Life of this patent
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Abstract
A measurement apparatus is provided for measuring signals from a device under test (DUT). The measurement apparatus includes a time domain receiver configured to receive from the DUT a time domain signal in a time domain; a logic domain receiver configured to receive from the DUT a logical signal comprising logic levels over time; a frequency domain receiver configured to receive from the DUT a frequency domain signal in a frequency domain through frequency downconversion; and a controller coupled to the logic domain receiver, and configured to determine the logic levels over time of the logical signal and to control at least one parameter of the frequency domain signal in response to the determined logic levels.
Claims11
A measurement apparatus for measuring signals from a device under test (DUT), the measurement apparatus comprising:
- a time domain receiver configured to receive from the DUT a DUT time domain output signal in a time domain and to provide a time domain input signal;
- a logic domain receiver configured to receive from the DUT a DUT logic domain output signal comprising logic levels over time;
- a frequency domain receiver configured to receive from the DUT a DUT frequency domain output signal in a frequency domain and to provide a frequency domain input signal;
- and
- a controller coupled to the logic domain receiver, and configured to determine control signals in response to the logic levels from the DUT logic domain output signal for controlling at least one parameter of the frequency domain input signal.
A measurement apparatus for measuring signals from a device under test (DUT), the measurement apparatus comprising:
- a time domain receiver configured to receive a DUT time domain output signal from the DUT in a time domain and to provide a time domain input signal;
- a logic domain receiver configured to receive a DUT logic domain output signal from the DUT comprising logic levels over time;
- a local oscillator (LO) configured to generate a LO signal, and to provide the LO signal to a mixer configured to mix the LO signal and a hopped DUT frequency domain output signal from the DUT to provide a downconverted frequency domain signal;
- a frequency domain receiver configured to receive the downconverted frequency signal in a frequency domain and to provide a frequency domain input signal;
- and
- a controller coupled to the logic domain receiver, and configured to determine control signals in response to the logic levels for controlling at least one parameter of the frequency domain input signal,
- wherein the logic levels comprise a frequency control word (FCW) representing a center frequency of the hopped DUT frequency domain output signal, and
- wherein the controller is further configured to synchronously adjust timing and frequency parameters of the LO to match timing and corresponding frequency parameters of the hopped DUT frequency domain output signal.
Dependencies are inferred from the claim text.