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Wide frequency range :
Unlike similar systems, a single phase noise system covers a
frequency range of 50 MHz to 18 GHz. Wide bandwidth
: PMT8080 covers over two octaves of RF frequency.
Phase noise measurements can be made at offset frequencies from
1 Hz to 10 MHz. Flexible : The PMT8080
can measure a wide variety of oscillator types, including free
running VCOs, locked PLL systems, and test equipment.
Simple to use : PMT8080 uses only three front-panel
coaxial connections to the reference signal generator, oscilloscope
and the external mixer. Front panel meter and oscilloscope provide
an indication of system lock. Low phase noise
floor : The exceptionally low phase noise floor of
the PMT8080 allows even very low noise oscillators to be characterized.
Compact : The small size of the PMT8080
uses only a few square inches of valuable bench area. |
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| Princeton Microwave Technology’s flexible
phase noise measurement system PMT8080 allows accurate phase
noise measurement to a far lower level than can be achieved
using a spectrum analyzer. The unit uses a phase locked system
(outlined below) to convert the noise sidebands of the signal
directly to base band. The base band is sampled using a fast
A/D and converted to a data file for analysis.
A simple PC application provides all the necessary control
and will run on a 486 or a faster machine. The data file produced
can be ported to a MathCAD routine (also supplied) to provide
scaled plots of phase noise at various offsets.
The software provided is also capable of indicating any spurious
signals that may be present in the spectrum of the unit under
test, thus enhancing the systems effectiveness, not only as
a design and verification tool, but also as a quality verification
tool for production environments. |
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| PARAMETER |
UNITS |
SPECIFICATIONS |
| Input Frequency Range |
MHz |
1- 26000 |
| Oscillator Input level |
dBm max |
14 |
| Local Oscillator level |
dBm max |
17 |
| Phase noise floor |
KHz |
-165 dBc/Hz |
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KHz |
-175 dBc/Hz |
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KHz |
-175 dBc/Hz |
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MHz |
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| Operating Temperature |
Centigrade |
0 to 50 |
| Storage temperature |
Centigrade |
-50 to 100 |
| Power Requirements |
Volts AC |
110 Volts |
| Dimensions |
Rack Mounted |
19 inch Rack |
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