SDI FS100-RM Manual de usuario descargar pdf (Pagina 60)

NOISE DETECTOR, ND-1

FEATURES

 Ultra-low system noise floor

 RF bandwidth: 2 MHz to 1 GHz

 Integrated PLL and calibration port

 Integrated RF level meter

SPECIFICATIONS

APPLICATIONS

 AM/PM noise measurements

 Characterization of components

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

www.spectradynamics.com

PARAMETER CONDITIONS MIN TYP MAX UNITS

RF measurement range carrier level

+ 7 to + 15 dBm

- 2 - 1000 - MHz

IF bandwidth low

high

DC - 400

0.001 - 1

kHz

MHz

IF gain -

+26

+46

+66

PLL tuning bandwidth carrier level

+ 7 dBm to + 17 dBm

- 0.1 - 100 - Hz

System residual PM noise

@ 5 MHz, +13 dBm carrier

Fourier frequency

1 Hz

10 Hz

100 Hz

1 kHz

10 kHz

100 kHz

-147

-157

-167

-175

-178

-145

-155

-165

-171

-175

dBc/Hz

DESCRIPTION

Model ND-1 is a noise detector module that may be used to measure AM or PM

noise. The module has a proprietary noise detector that can be used to make very high

-resolution single channel measurements. Two ND-1 modules can be combined to

create a dual-channel measurement system. Dual-channel noise analysis will allow

an effective reduction of at least 10 dB and up to 20 dB from the system noise floor. RF

level measurements are made on both the RF and LO inputs. The low noise IF

amplifier has variable gain and bandwidth settings to accommodate different

measurement requirements and a calibration input is available for automatic gain

calibration. The ND-1 also includes an adjustable bandwidth phase-lock loop that can

be used when measuring oscillators to lock the reference and device under test.

The ND-1 plugs into the NMS mainframe and requires a Noise Measurement System

Controller (NMSC).

Options:

ND-1 = 2 MHz - 1 GHz RF Bandwidth, +7 to +15 dBm acceptable carrier power level

ND-1 Option M = 2 MHz - 1 GHz RF Bandwidth, +10 to +17 dBm acceptable carrier power level

ND-1 Option A = 1 - 500 MHz RF bandwidth, +7 to +15dBm acceptable carrier power level

ND-1 Option A-M = 1 - 500 MHz RF bandwidth, +10 to +17dBm acceptable carrier power level

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SDI FS100-RM Manual de usuario Pagina 60

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