SDI LNFR-100E Bedienungsanleitung PDF herunterladen (Seite 38)

LOW NOISE FREQUENCY REFERENCE, LNFR-400

FEATURES

 External 5 MHz/DC tuning

 Low environmental sensitivity

 Ultra-low phase noise

 Very low spurious: -100 dBc

APPLICATIONS

 Atomic frequency standards

 Phase noise measurements

 Reference frequency generation

 Telecommunications standards

DESCRIPTION

The LNFR-400 is an ultra-low noise frequency reference. The

device can be used as a low noise source in phase noise

measurement systems. Other applications include high stability

frequency synthesizers, reference frequency generation and

frequency synthesis chains for atomic standards. The LNFR

-400 contains 5 MHz and 100 MHz ultra-low noise ovenized

oscillators. The outputs at 10 MHz, 20 MHz, 40 MHz and 80

MHz are obtained by multiplying the signal from the 5 MHz

oscillator. The 100 MHz oscillator is phase locked to the 5

MHz oscillator to provide a lower phase noise signal inside the

bandwidth of the phase-locked loop. The output of the 100 MHz

oscillator is doubled to obtain 200 MHz and doubled again to

obtain 400 MHz. All outputs to the front panel are buffered with

low noise isolation amplifiers. The LNFR-400 can be controlled

via a +/- 5 VDC tuning signal or phase locked to a 5 MHz

1 VRMS signal. The synthesizer is offered in a stand-alone

rack-mount package.

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

www.spectradynamics.com

LNFR-100 SELECTION GUIDE

Product Name

Standard Outputs

Frequency (MHz)

Optional Outputs

Frequency (MHz)

LNFR-400 5, 10, 100 20, 40, 80, 200, 400

LNFR-400 HS - High Stability Option

Temperature stability @ 5MHz, 0 to 60 oC = +/- 5 E-10

5, 10, 100 20, 40, 80, 200, 400

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SDI LNFR-100E Bedienungsanleitung Seite 38