Aeroflex 2946A Instructions d'exploitation télécharger pdf (Page 208)

46882-311D A-1

Appendix A

DIRECTIONAL POWER HEADS

Contents

Features..........................................................................................................................................A-7

Performance data - power head only..............................................................................................A-8

Performance data - in conjunction with 2945A............................................................................A-10

Additional parts associated with directional power head.............................................................A-13

Supplied................................................................................................................................A-13

Optional................................................................................................................................A-13

Using the directional power head accessory ................................................................................A-14

General .................................................................................................................................A-14

Power supply ........................................................................................................................A-14

Procedure..............................................................................................................................A-14

Technical description...................................................................................................................A-16

Directional coupler assembly................................................................................................A-16

Channel circuit......................................................................................................................A-16

Control circuit.......................................................................................................................A-16

Power supply and oscillator..................................................................................................A-16

List of tables

Table A-1 Conversion of VSWR to return loss ..........................................................................A-13

List of figures

Fig. A-1 Power range of HF directional power head .................................................................A-11

Fig. A-2 Power range of UHF directional power head ..............................................................A-11

Fig. A-3 VSWR range for HF and UHF directional power heads .............................................A-12

Fig. A-4 Percentage to dB error conversion...............................................................................A-12

Fig. A-5 Directional power head screen.....................................................................................A-14

Fig. A-6 Simplified block diagram of HF or UHF power head..................................................A-17

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Aeroflex 2946A Instructions d'exploitation Page 208