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Markham, ON L3R 0H5, Canada
1. Internal Reference source.
The internal time reference, a voltage controlled OCXO with accuracy over 5ppb, is calibrated against an external 10MHz reference provided by a GPS receiver.
Factory calibration provides accuracy not less than +/-10Hz.
The accuracy degrades over time because of the crystal aging.
AVQ1020(2ndGen), AVQ1022(2ndGen), AVQ1022m(2ndGen), AVQ200
If necessary, the OCXO can be adjusted by using an external 10MHz source.
The OCXO frequency can be adjusted by ControlPanel->System->Factory Settings->Int. 10MHz Fine Tune.
AVQ1022(1stGen), AVQ1022m(1stGen)
AVQ1022 (1stGen) and AVQ1022m(1stGen) require a special procedure for the OCXO adjustment. Please contact us at support@avateq.com for further information.
2. Input signal power detector.
The power detector is calibrated by using a reference generator.
The calibration table is stored internally.
No re-calibration is required.
3. ALC gain.
The internal ALC gain is calibrated by using instrumental generators providing real broadcasting signals.
For Tx out mode -20dBm input level is a reference point.
The calibration procedure optimizes the ALC gain.
No re-calibration is required.