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