System Handbook

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D835V2, serial no. 4D167 Extended Dipole Calibrations
Referring to KDB 450824, if dipoles are verified in return loss (<-20dB, within 20% of prior calibration), and in
impedance (within 5 ohm of prior calibration), the annual calibration is not necessary and the calibration
interval can be extended.
<Justification of the extended calibration>
D835V2 – serial no. 4D167
835MHZ
Date of Measurement Return-Loss (dB) Delta (%) Real Impedance (ohm) Delta (ohm) Imaginary Impedance (ohm) Delta (ohm)
11.25.2019
(Cal. Report)
-28.197 50.837 -3.8368
11.24.2020
(extended)
-29.055 3.04 51.086 0.249 -3.2934 0.5434
11.23.2021
(extended)
-28.250 0.19 52.398 1.561 -2.9481 0.8887
The return loss is < -20dB, within 20% of prior calibration; the impedance is within 5 ohm of prior calibration.
Therefore the verification result should support extended calibration.