Description
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 |
Benchtop
|
Portable
|
Average Noise Level |
-125 dBm
|
Frequency |
10 KHz - 21 GHz
|