Rohde & Schwarz Introduces
Compact FM Transmitters
August 16, 2007
Source: Rohde & Schwarz
Rohde &
Schwarz has introduced a complete portfolio of compact FM
transmitters featuring a range of different capacities that
cover an entire network. The transmitters, the R&S SR8000
and R&S NR8200 series, help to ensure the high quality
of analog networks with the reliability of advanced digital
transmitters.
R&S NR8200 FM transmitters are available
for transmit powers of 2.5 kW to 40 kW. Two single transmitters
with up to 5 kW each can be accommodated in a 19" rack
– a space-saving solution for extremely small transmitter
stations. Even the complete 30 kW transmitter requires only
2RU. Exciter standby, (n+1) standby, passive standby, and
active dual output stage with manual or automatic switchover
can be implemented for the R&S NR8200 transmitter family.
Transmitters that are already in the network can be easily
integrated in a (n+1) redundancy system.
The FM transmitters of the R&S SR8000
series are rated for an output power between 100 W and 2.5
kW. Due to its compact design all functions are integrated
in a single transmitter and occupy a maximum of 8 RUs.
Single frequency network (SFN) operation is already possible.
Passive standby and (n+1) standby systems containing up to
eight main transmitters are available as a standby system.
The FM transmitters of the R&S SR8000 series meet all
requirements for operation as a converter.
The transmitter families are air-cooled
and based on Rohde & Schwarz’s platform concept of,
a common system for all TV and sound broadcast transmitters.
In addition to digital exciters, the platform includes power
amplifiers, power splitters and couplers, power distribution,
the transmitter rack with a cooling system, and the transmitter
control unit. All transmitter and amplifier parameters required
for diagnostics can be retrieved, either locally or remotely
via standard (IP) protocol and standard software (web browser,
SNMP).
The synthesizer-based digital exciter generates
a frequency-modulated RF signal in the range from 87.5 MHz
to 108 MHz. Analog AF signals as well as digital signals can
be processed in line with the bit-serial AES/EBU protocol.
Left/right, MPX, RDS, or SCA signals can be used as modulation
signals.
The exciter measurement results, the status and the modulation
data are evaluated and displayed on the transmitter control
unit. An error table rounds out the monitoring functions.
Submit a Company
Submit News
Submit a Job
Submit an Event
|
