This constellation is typically used to control movement in the azimuth and elevation or polarization range. The rotator control basic modules control up to two rotators, either one AC-powered and one DC-powered rotator or two DC-powered rotators. Rohde & Schwarz Modular System Device 3 MSD_bro_en_ _v0300.indd :46:23Ĥ Powerful control of up to four axis The rotator control options can be used to control up to four axes: azimuth, elevation, polarization and antenna height. For examples, please refer to the R&S ZS129x product brochure. The R&S ZS129A5 is a configurable indoor switch unit that can be adapted to special system requirements. The R&S ZS129A5 switch unit can be controlled via the open collector outputs. Per switch module, up to two SPDT antenna switches or splitters and up to four DC feeds can be assembled. They are integrated into the switch modules so that no further module slot is occupied. The SPDT antenna switch, the splitter and the DC feeds are options that can be used in conjunction with the -SM8 and the -SM26 switch modules. 8 khz to 8 GHz active antennas can be directly powered by DC feeds that supply DC voltage to an antenna input. The optional splitter can be used to distribute an input signal to two outputs (DC to 8 GHz). Further flexibility is provided by a single-pole double-throw (SPDT) antenna switch (DC to 8 GHz).
Since the switching is done on the mast, only one RF cable needs to be routed down to the equipment inside the station. When it is placed on the mast close to the antennas, the number of required RF cables can be significantly reduced. This switch unit is designed for outdoor use. The R&S ZS129A2 switch unit can be controlled via the bus interface. Both modules can control additional external switch units. The -SM8 switch module provides a single-pole sixthrow (SP6T) antenna switch for the frequency range from DC to 8 GHz and the -SM26 switch module provides a SP6T antenna switch for the frequency range from DC to 26.5 GHz. to facilitate antennas covering different frequency ranges or polarizations. Additional system capabilities Flexible switching of up to twelve antennas Several options are available to provide a high degree of flexibility for antenna switching, e.g. Any combination of the -SM8 and -SM26 can be integrated, with a maximum of two per device. When connected to the TTL inputs of the, the receiver can directly initiate the switching. Monitoring equipment such as the R&S ESMD wideband monitoring receiver or the R&S EB500 monitoring receiver provides TTL outputs. the R&S ZS129Z1 or suitable third-party equipment with open collector control. 3 Modular System Device Benefits and key features The bus interface and the open collector outputs can also be used to control other external equipment, e.g.
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