The FEL-10 is a low noise distributed 10 MHz frequency reference. The device can be used to provide a stable and spectrally pure 10 MHz reference. The FEL-10 can be phase locked via a +/- 5 VDC tuning signal or phase locked to an external 10 MHz 1VRMS signal. The unit incorporates a low noise OCXO and the high performance distribution amplifier module, HPDA. Five outputs are available with channel to channel and reverse isolation exceeding 100 dB. The FEL-10 is offered in a stand-alone rack-mount enclosure with SMA connectors. The optional PLL module allows locking to an external 10 MHz source. The PLL module has loss of reference and loss of lock indicators.

FEL-10 Users Manual
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FeaturesApplications
  • High isolation:  > 100 dB
  • Low harmonic distortion:  -45 dBc
  • Low phase noise 
  • Frequency distribution
  • Phase noise measurements
  • Reference frequency generation
  • Telecomunications
Specifications
ParameterConditionsMinTypMaxUnits
Output power +10 +13 - dBm
Output isolation Channel to channel
Reverse		 -
-		 100
100		 -
-		 dB
Mech. tuning range - +/-1 E-6 - -
Electrical tuning range +/-5 VDC - +/-2 E-7 - -
Aging After 30 days operation - 1 E-9 - Per day
Tuning port voltage - +/-5 - VDC
Temperature Stability @ 10 MHz, 0-50°C - +/-1.5E-8 - -
Phase noise L(f) 10 Hz
100 Hz
1 kHz
>10 kHz		 -
-
-
-		 -125
-155
-164
-165		 -122
-152
-161
-162		 dBc/Hz
Harmonics - -45 -40 dBc

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