Testing Phase Noise of

Ultra Low Phase Noise OCXOs

Challenges and Solutions

Cross correlation technique is used to
test phase noise of ULPN OCXOs

Four test instruments are evaluated:

• Noise XT DCNTS

• Agilent E5052B

• Symetricomm's 5120A-01

• Anapico APPH6000

Each is rated in terms of:

• Accuracy

• Speed

• Ease of use

• Range

• Cost

• Ease of data retrieval

Read White Paper

Precision Ultra Low Phase
Noise OCXO

Dual Frequency Reference Module

Very small hermetically sealed
   36 x 27 mm "Europack" OCXO

Two frequency outputs—
   0 MHz and 100 MHz

Ultra Low Phase Noise
  - 115 dBc/Hz at 1 Hz offset,
    - 145 dBc/Hz at 10 Hz offset for 10 MHz
  - 123 dBc/Hz at 10 Hz offset,
    - 180 dBc/Hz at 100 KHz for 100 MHz

Excellent temperature stability from ± 2 ppb

Low aging from 0.25 ppb/day

Excellent short term stability
   ADEV < 1E-12 at 1 s

More information

Contact a technical support representative

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NEL Frequency Controls, Inc.
357 Beloit St., P.O. Box 457 • Burlington, WI 53105-0457
Phone: 262.763.3591 • Fax: 262.763.2881 • Email: sales@nelfc.com