They are the models
that have led BSI to
success
on the world market for solid-state
transmitters. BSI has shown, many
years ago, the ability to integrate the
modulator and power amplifier in devices
of very small size without giving up any
of highest quality performances that more
refined customers demand.
They are used as
driver for amplifiers power up to 30 kW,
but can also be conveniently used directly
“in antenna” to realize transmitting
stations at low-cost and very small
footprint.
They are distinguished by
reliability and unmatched feature.
Exciter ETB100 offers the
high ETB series performance with 100 W output power.
Exciter in 3 rack units, switching power
supply, equipped with telemetry.
Suitable both to drive medium power devices and to direct connection in antenna,
to cover urban or mountainous areas.
Available with internal stereo board.
Interface LCD allows ease reading and setting operations of parameters. Final user can password-protect its chosen configurations.
3 bars indicate frequency deviation (one for composite signal and two for left and right channels), with peak memory. A histogram on frequency and time axis allows precise monitoring of audio chain performances. An extremely wide and flat audio pass-band, without phase rotation, ensures that the MPX signal is transmitted at high quality without stereo degradation. A programmable ALC (Automatic Level Control) circuit acts on variations of the composite MPX signal, maintaining its level within the range defined by the user.
The RF amplifier is behind by a ROS meter, that in case of mismatch, gradually decreases the output power up to a safe value, the ETB exciters series might remain in this condition for an indefinite time without damage.
IPF is an intelligent system that allows the transmitter to stay "ON AIR" into mismatched loads.
It allows remote monitoring and adjustment of the unit's operating parameters. Just an additional standard or GSM modem and HyperTerminal software (© Microsoft Windows) are required.
Inside ETB exciters an expansion slot has been designed to place a Stereo Input and Stereo coder board (stereo filter, clipper and pre-emphasis).
It allows the first 40 current harmonics emission reduction below the limits imposed by European standards (EN61000-3-2), better functioning of electronic equipment connected to the network, waveform of the current very close than sinusoidal.
All ETB exciters meet the essential requirements of Directive 1999/5/EC.
On request we can personalize the ETB display with the broadcaster's logo
| ENVIRONMENT | |
| Temperature range (operating) | 0 - +45 °C |
| Temperature range (non operating) | -20 - +50 °C |
| Humidity range (operating) | 95% a 40 °C |
| Humidity range (non operating) | 90% a 65 °C |
| Altitude range (operating) | <4600 meters |
| Altitude range (non operating) | <15000 meters |
The
B5000
is a very high specification FM Power Amplifier that uses the latest design and construction techniques. It provides high performance, excellent control and monitoring. The
E5000 is a wideband design requiring no tuning and offers very easy installation.
The B5000 is a solid state FM amplifier that supplies, in the 87,5 - 108 MHz frequency range, a nominal output power of
5 KW.
B5000 is a block that contains 16
RF amplifier modules extractable, with a power of 300 W each, combined to give
the power of 5 KW on output connector. Each RF module is built with a MOSFET of
325 W maximum power.
The power supply unit is split into 3 power supply, 3 KW each, easily accessible
and replaceable in case of failure.
| Operating band | 87.5 - 108 MHz |
| Output Low-pass Filter | W.B. 87.5 MHz - 108 MHz |
| RS232/RS485 | Yes |
| Points of measure | RF Sample-MPX Monitor |
| Displayed Parameters | More than 50 parameters displayed on a wide graphic LCD |
| Adjustments | From the frontal panel trough LCD /from PC |
| Microprocessor controlled | Yes |
| Power supply redundancy | Yes |
| Number of MOSFETs | 16 (B5000) |
| RF power stage technology | ICEFET & ECOSAVING |
| MOSFET type | BLF278 Philips |
| Number of power supplies | 2 (E2000) 3 (E3500) 3 (E5000) |
| Dimensions: Rack units | 4U |
| Dimensions: W - H - D | 48.5 - 17.5 - 70 cm |
| Weight | 40 kg (2000) 44 kg (3500) 45 kg (5000) |