R&S^®SR600E1 FM Solid-State Transmitters

The Transmitters R&S® SR610E1 for 10 kW, R&S® SR605E1 for 5 kW and R&S® SR602E1 for 2.5 kW belong to the fourth generation of fully solid-state Rohde&Schwarz VHF FM transmitters. The proven concept of the predecessor solid-state transmitter generation was developed further and substantially improved. The high-power FM transmitters in solid-state technique with output powers from 2 kW to 10 kW ensure broadcasting of sound programs in large areas. High reliability and the optimum price/performance ratio are distinguishing features of the transmitters. They emit AF, RDS (radio data system) and SCA (subsidiary channel authorization) signals such as DARC (data radio channel) in mono, stereo and composite mode.

The transmitters comprise the following modules:

• VHF FM Transmitter SU135 (exciter)
• Power Amplifier VU320
• Power combiners and splitters
• Power supply unit
• Fan set
• Transmitter rack

Internal communication takes place via a serial CAN (controller area network) bus. This bus has proved itself in harsh industrial environments and can easily be extended whenever required. The transmitters can be locally and remotely controlled. Remote control can be implemented via:

• BITBUS
• Parallel interface
• Modem
• Internet

The transmitters can be configured to form the usual standby systems such as passive exciter standby, passive (1+1) and passive (n+1) transmitter standby. The integrated forced-air cooling system ensures that the junction temperature of the output transistors does not exceed 120°C to 130°C. This is primarily for achieving a high MTBF.

The transmitters are in compliance with the requirements of the R&TTE Directive 1999/5/EC and the following standards:

• Safety: EN 60215
• EMC: ETS300447
• RF requirements: ETS 300384

The transmitters also meet the:

• Standard specifications 5/1.0 parts 1 and 2, 5/1.1 and 5/3.1 of ARD and DTAG