SDI LNFR-100E Manual de usuario descargar pdf (Pagina 56)

SpectraDynamics, Inc. ● 1849 Cherry Street Unit 2, Louisville CO, 80027 ● Phone (303) 665 1852 ● Fax (303) 604 6088

www.spectradynamics.com

NOISE SOURCE, NS-NM

APPLICATIONS

• AM/PM noise measurements

• Characterization of components

FEATURES

• Stable Gaussian noise generator

• Noise bandwidth up to 10%

• Noise flatness < 1 dB

• Low insertion loss

DESCRIPTION

Model NS-NM is a gaussian noise source module that may be used to calibrate the AM and PM

noise measurement system. The gaussian noise source is typically bandwidth limited to 10% of the carrier

frequency of interest and is summed with the RF carrier when calibrating the measurement system. Once

calibration is complete, the noise source can be turned off and the AM or PM noise measurement can be

completed without disconnecting any of the signals. The noise source calibration certificate may be obtained

from SDI or at NIST.

The NS-NM plugs into the NMS mainframe. The noise source can be turned on or off manually

or under control of the Noise Measurement System Controller. The NS-NM uses one slot of the system

mainframe.

SPECIFICATIONS

PARAMETER CONDITIONS MIN TYP MAX UNITS

Center frequency must be specified upon

order placement

1 - 45000 MHz

Calibrated

noise bandwidth

BW of center frequency - 10 - %

Noise Level low

high

-120

-100

dBVrms/rtHz

Noise flatness +/- 1 MHz

+/- 10 MHz

0.5

1.0

Insertion loss - 1.0 - dB

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SDI LNFR-100E Manual de usuario Pagina 56