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8563A

8563A. SPECTRUM ANALYZER 9 kHz - 26.5 GHz. Overview What is Spectrum Analysis?. Overview Types of Tests Made. Modulation. Noise. Distortion. Theory of Operation Spectrum Analyzer Block Diagram. RF input attenuator. IF gain. IF filter. detector. mixer. Input signal. Log Amp.

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8563A

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  1. 8563A SPECTRUM ANALYZER 9 kHz - 26.5 GHz Overview What is Spectrum Analysis?

  2. Overview Types of Tests Made . Modulation Noise Distortion

  3. Theory of Operation Spectrum Analyzer Block Diagram RF input attenuator IF gain IF filter detector mixer Input signal Log Amp Pre-Selector Or Low Pass Filter video filter local oscillator sweep generator Crystal Reference CRT display

  4. Frequency Translated Signals Resultant Signal To Be Measured Mixer Generated Distortion Specifications Distortion Mixers Generate Distortion

  5. 3 dB Detector Mixer 3 dB BW Input Spectrum IF Filter/ Resolution Bandwidth Filter (RBW) LO Sweep RBW Display

  6. Primary functions (Frequency, Amplitude, Span) Softkeys 8563A SPECTRUM ANALYZER 9 kHz - 26.5 GHz Control functions (RBW, sweep time, VBW) Numeric keypad RF Input

  7. Penalty For Sweeping Too Fast Is An Uncalibrated Display Swept too fast

  8. Specifications Sensitivity/DANL Effective Level of Displayed Noise is a Function of RF Input Attenuation signal level 10 dB Attenuation = 20 dB Attenuation = 10 dB Signal-To-Noise Ratio Decreases as RF Input Attenuation is Increased

  9. 10 dB 10 dB Specifications Sensitivity/DANL: IF Filter (RBW) Displayed Noise is a Function of IF Filter Bandwidth 100 kHz RBW 10 kHz RBW 1 kHz RBW Decreased BW = Decreased Noise

  10. Specifications Sensitivity/DANL Sensitivity is the Smallest Signal That Can Be Measured 2.2 dB Signal Equals Noise

  11. Specifications Dynamic Range Dynamic Range

  12. Features Modulation Measurements: Time-Gating Time Division Multiple Access (TDMA) user #1 Time 1 0 Amplitude 5 4 Timeslot 3 2 1 0 1 2 3 4 5 6 Frequency Channel Number

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