R&S®GV2900 Power Management Unit (PMU)

  • Overview

Key Facts

The R&S®GV2900 power management unit (PMU) assigns the exciter signals to the inputs of the power amplifiers, and ensures that the number of HF transmitting lines and the RF power of each HF line are configured in line with the current user requirements of the HF transmission system.

Key Facts

The R&S®GV2900 power management unit (PMU) assigns the exciter signals to the inputs of the power amplifiers, and ensures that the number of HF transmitting lines and the RF power of each HF line are configured in line with the current user requirements of the HF transmission system.

The radio operator configures the R&S®XB2900 HF broadband system via the central control system, installed in the console in the radio room, using a userfriendly man-machine interface. For emergency purposes, a predefined configuration is activated immediately. In addition, the system can be controlled manually by the operator, since all components of the R&S®XB2900 HF transmit/ receive broadband system are equipped with a local control unit.

Inside the power management unit, the RF signals are distributed by high-performance switching devices at low power levels. The system is designed so that no highpower RF switching is necessary, thus ensuring high reliability and instantaneous channel changing for frequencyadaptive and EPM (ECCM) applications.

The following operating modes are possible:

Single-line mode Each R&S®VK2900 amplifier is allocated to a single R&S®GX2900 exciter
2 kW mode Two R&S®VK2900 power amplifiers are driven with the same exciter signal, i.e. Nos. 1 and 2 and Nos. 3 and 4
4 kW mode All four R&S®VK2900 amplifiers are coherently driven with the same exciter signal
Mixed mode One exciter unit controls two power amplifiers, i.e. coherent driving; two exciters operate on independent lines, and one exciter remains free for receiver operation
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