SDI LNFR-100E Bedienungsanleitung PDF herunterladen (Seite 54)

NOISE DETECTOR, ND-1-NM

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

Signal level measurement

range

- -25 to +25 - dBm

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

-150

-160

-170

-175

-178

-145

-155

-165

-171

-175

dBc/Hz

DESCRIPTION

Model ND-1NM 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 or dual-channel measurements. 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-1NM 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-1NM plugs into the NMS mainframe and requires one of the Noise

Measurement System Controllers. The NMSC-1 provides Fourier noise analysis from

DC to 1 MHz from the carrier. The NMSC-2 extends the Fourier frequency analysis

range to 10 MHz. The ND-1NM uses one slot of the system mainframe.

Option A: 1-500 MHz Mixer

For Medium Level Detector option (+10 dBm to +17 dBm) add -M to the part number.

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