Siemens NFR2001



The Siemens Normalfrequenzeinrichtung NFR2001 is a clock processing, selection and distribution unit for PDH and SDH networks. It receives one or multiple reference signals [traditionally from atomic clocks], processes the signals to compensate for transmission errors and synchronizes a two-stage PLL to remove high frequency jitter and wander.

The NFR2001 generates a local clock referecne which can be provided to PDH and SDH transmission equpment.

In case the active reference signal fails, the NFR2001 provides fail-over from its internal reference until the firmware has switched over to a new reference signal.

NFR2001 is internally redundant; all components/modules exist twice and can fail-over whenever needed. This also allows servicing or upgrade/downgrade while remaining fully operational.

The NFR2001 allows for the following clock inputs:
  • 2.048 Mbit/s data signal
  • 2.048 MHz clock signal
  • 10 MHz clock signal
The NFR2001 provides the following clock outputs:
  • [up to 60] 2.048 MHz clock reference outputs (G.703) 75 ohms unbalanced or 120 ohms balanced.


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Manuals (German)

Files (8)
NFR2001 Information.pdf View NFR2001 Information.pdf 290 KB laforge, 03/10/2024 10:28 AM
NFR2001 Bedienung.pdf View NFR2001 Bedienung.pdf 510 KB laforge, 03/10/2024 10:28 AM
DSC01333.JPG View DSC01333.JPG 2.75 MB laforge, 03/11/2024 11:26 AM
DSC01339.JPG View DSC01339.JPG 3.17 MB laforge, 03/11/2024 11:26 AM
DSC01343.JPG View DSC01343.JPG 5.19 MB laforge, 03/11/2024 11:26 AM
DSC01347.JPG View DSC01347.JPG 6.63 MB laforge, 03/11/2024 11:26 AM
DSC01348.JPG View DSC01348.JPG 2.16 MB laforge, 03/11/2024 11:26 AM
DSC01351.JPG View DSC01351.JPG 3.11 MB laforge, 03/11/2024 11:26 AM

Updated by laforge about 1 month ago · 2 revisions

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