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Base stations for digital mobile radio must function reliably at all times. To guarantee this, the transceivers are subjected to stringent quality tests at all stages of production from the individual module to the ready-made product, and key RF parameters are measured during on-site installation and during service. However different the measurement tasks may be, they can all be performed with a single compact test system – Digital Radiocommunication Tester CMD54/57 (FIG 1)*.
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