Draka - Test Reports


Test Reports | Draka Environment & Quality

Environment and Quality

Test Report

A test report is attached to each cable drum delivered by Draka. The test report includes identification data of the cable and drum, test results of transmission characteristics and other electrical characteristics as well as test results of mechanical dimensions of the cable.

Characteristic impedance is a routine measurement and it is derived from the electrical length and capacitance measurements. The tolerance in feeder cables is 50+/- 1Ω.

High voltage tests verify that no breakdown occurs in insulation or jacket when high voltages are applied.

Return loss sums up the effects of all the impedance variations within the cable and at its ends, at a certain frequency. The return loss is measured from both ends of the cable at 10-2700 MHz frequency band.

Attenuation is determined from the ratio of the input and output power. The test report contains the attenuation values at 400, 500, 800, 900, 1000, 1800, 1900 and 2200 MHz frequencies.

We also carry out a TDR (Time Domain Reflectometry) measurement in order to verify that there are no local damages in
the cable.


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