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The Amplitude and Phase Noise Measurement System product line is a modular instrument that may be customized to
implement a versatile dual-channel phase noise measurement system. The measurement system may be used to
make both AM and PM noise measurements on signals in the frequency range of 1 MHz to 45 GHz. Custom
detector modules may be added to extend the carrier frequency measurement range. The measurement
system is composed of modules that plug into the measurement system mainframe. The mainframe
dimensions are 5U X 19” X 16”. The mainframe is included with the purchase of a Noise Measurement
System Controller (NMSC).
There are two standard measurement system controllers. The NMSC-1 has a spectral analysis
capability from DC to 1 MHz. The NMSC-2 extends the spectral analysis frequency range to 10 MHz and is
upgradeable to provide spectral analysis from DC to 40 MHz. The NMSC modules contain a dual-channel
spectrum analyzer allowing the cross correlation measurement of signals that are lower than the system noise floor. The front
panel has a 6.4 inch, color touch-screen display. An external keyboard, monitor and printer can also be
connected to the controller. Remote measurements or monitoring are possible using an ethernet connection.
There are six slots available on the noise measurement crate for the various measurement modules.
Two standard noise detector modules are currently offered that cover the frequency range of 1 MHz to 18
GHz. The ND-1 covers the frequency range of 1 MHz to 1 GHz. The ND-3 module covers the frequency range of 1 GHz to 18 GHz. Custom modules
may be ordered to extend the frequency range or implement special measurement topologies. All the noise
detector modules are designed to facilitate the measurement of sources as well as passive and active
components. For source measurements, the reference and device under test are phase locked with
programmable PLL bandwidth to accommodate measurements of wide tuning voltage controlled oscillators to
very stable ultra-low noise oven stabilized oscillators. Noise in amplifiers, multipliers, mixers and other active
and passive components can be measured easily with the addition of one of the programmable delay line
modules.
Calibration of the Phase Noise Measurement System can accomplished easily using a noise source module,
NS-NM or a tone calibration module, TC-NM. The system can also be calibrated by using the traditional beatnote
calibration method. Calibrated noise source modules and tone calibration modules can be ordered for
any frequency range of interest. The tone calibration circuitry is included in the ND-1NM noise detector,
however the ND-2NM and ND-3NM detectors do require an external tone calibration module.
Power Supply: 110 VAC, 3A, 60 Hz
220 VAC, 2A, 50 Hz
Optional Battery Power Input: +/- 12VDC, 2A
Operating Temperature: 10 to 40 degrees C
Dimensions: 5U X 19” X 16”
Empty Weight: 25 lb
Full Weight: 50 lb
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