Page 21 of 25
User manual
Antenna model: AT3000
Rev 6.0 – September 2014
Clampco Sistemi is a registered trademark of
Calzavara SpA
– via Corecian, 60 – 33031 – Basiliano (Italy) http://www.clampco-sistemi.com/
RF cable
: periodically check that the end of the inner conductor is not too far back from (max 3 mm) or projecting
beyond the plane (max 1mm) of the opening of the threaded ring on the male connector: this can respectively
cause poor contacts or damage the female connector of the antenna or analyzer.
Check that there are no obvious signs of local deterioration of the cable. Even slight recurrent distortion of the
cable (for example opposite the ferrite beads) can cause resonance and defective behavior of the device at some
frequencies.
The cable must be periodically calibrated to evaluate its attenuation (which is part of the measuring chain). It is
also important to check the intrinsic return loss at the connectors, with a suitable load and a network analyzer or
equivalent device: a high return loss coefficient can in fact affect the overall measuring uncertainty.
A functional check procedure for the individual cable significantly reduces the possibility of measuring unreliability:
the simplest method is to have two similar cables and compare the results obtained when they are used
successively. If in doubt, please do not hesitate to contact the manufacturer: the cost of cable maintenance is
usually negligible.
Summary of Contents for AT3000
Page 2: ......
