Tektronix 2794

RF Spectrum Analyzer, 10 kHz to 21 GHz (325 w/optional mixers)
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The Tektronix 2794 spectrum analyzer is a wide band, very sensitive receiver. It works on the principle of "super-heterodyne receiver" to convert higher frequencies (normally ranging up to several 10s of GHz) to measurable quantities. The received frequency spectrum is slowly swept through a range of pre-selected frequencies, converting the selected frequency to a measurable DC level (usually logarithmic scale), and displaying the same on the CRT of the Tektronix 2794. The CRT displays received signal strength (y-axis) against frequency ( x- axis). Some applications for Tektronix 2794 Spectrum Analyzers include Site Monitoring: Verify that the frequency and signal strength of your transmitter is accurate. Interference: Before a system is installed you use a Tektronix 2794 spectrum analyzer to verify that the frequencies (you plan to use) are not occupied or if the presence of a very strong signal will interfere with your new setup. Interference can be created by a number of different situations. Other tests that utilize the Tektronix 2794 spectrum analyzer features include antenna isolation, co-channel interference, adjacent channel power, occupied bandwidth, intermodulation, microwave or satellite antenna alignment, and characterization of components. 2794 Performance Characteristics:
  • Form Factor: Mainframe
  • Input Impedance: 50 Ohm
  • Minimum Frequency: 10 kHz
  • Maximum Frequency: 21 GHz direct; (325 GHz optional mixers required)
  • Frequency Accuracy: 0.007 %
  • Zero Span: Yes
  • Minimum Span: 100 Hz
  • Maximum Span: 150 GHz
  • Minimum Sweep Time: 200 us
  • Maximum Sweep Time: 100 s
  • Minimum Resolution Bandwidth: 10 Hz
  • Maximum Resolution Bandwidth: 3 MHz
  • Minimum Video Bandwidth: 0.3 Hz
  • Maximum Video Bandwidth: 30 kHz
  • Maximum Safe AC Input: 1 dBm
  • Minimum Displayed: Average Noise -125 dBm
  • Maximum Displayed: Average Noise -80 dBm
  • Maximum Dynamic Range: 134 dB
  • Maximum Amplitude Uncertainty: 5 %
  • Trigger Source: External,Internal
  • Trigger Modes: Freerun,TTL
  • Probe Power: Yes
  • Noise Source Driver: No Tektronix 2794 Measurements/Features:
  • Manufacturing ATE
  • Avionics
  • Broadcasting
  • CATV
  • Cellular Radio
  • Design and Engineering
  • Nuclear Physics
  • Two-way radio
  • Specifications & Attributes (Spectrum Analyzers)
    Form Factor
    Average Noise Level
    -125 dBm
    10 KHz - 21 GHz

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