EXC-GT – FM super-compact transmitter series
User’s manual – Page 5 of 98
1
I
NTRODUCTION
Congratulations on your purchase! The
EXC-GT
transmitter series is equipped with the most modern technology available, to
provide you with maximum performance at minimal performance cost, while fully conforming to technical regulations. Flexibility,
quality, compactness, and low electrical consumption make the devices in the EXC-GT series the best offered on the market today.
The transmitters in the EXC-GT series are available ranging from 30 W (for common uses, such as an exciter) to 4 KW, ideal for
N+1 systems and as a spare transmitter. These are just a few of the advanced characteristics that make the EXC-GT series truly
unique:
Super-compact size and reduced weight
– The most powerful model is so compact that it can be entirely contained within a
standard 19” 4-unit rack.
Low performance costs.
The unique design reduces internal loss and allows the device to achieve an extremely high yield –
typically greater than 80% - minimizing electrical consumption and thus decreasing performance costs.
Sturdy modular construction
. Reliable modular construction minimizes and facilitates maintenance operations. In addition, it
ensures a greater average time between failures, as well as ease of maintenance.
Easy to use and to configure.
All the transceivers use the same control interface, which is equipped with a large LCD screen,
a multifunction knob, and few other buttons. This allows the user to easily set functions on the device, and to view the
operating parameters in the blink of an eye.
Nominal RF output power over the full FM range particularly stable against time.
The output power may be varied from a
minimum level and the operating frequency includes the full FM range, without retouching other parameters.
Power section entirely modular and highly reliable.
In the high-power versions, the stage of RF amplification is composed
of multiple internal subcompact modules produced from the latest advances in technology and working in perfect synergy.
Thanks to internal balancing circuits, when a failure occurs in one of the modules, the others are automatically rebalanced,
allowing for transmission at reduced power. Each module is easily identifiable, inspected, and removable without the assistance
of a welder, thanks to the reduced number of interconnections achieved using multi-polar connectors.
RF output stage has a reverse intermodulation figure lower than the standard bipolar construction
. Low enough to
approach that of tube equipment, due to the MOS-FET design.
Low level of dissipation.
The reduction in internal loss and overall elevated yield minimize the dissipation of heat; as a result,
the devices in the EXC-GT Series perform well even in challenging environmental conditions.
Stable, reliable power supply.
The entire line of transmitters integrates the use of power sources with active power factor
correction (PCF), as stipulated in recent regulations. As such, impact on the electrical power source is minimal, resulting in
greater reliability over the entire device.
Easy diagnostics and easy-to-read parameters
, thanks to a comprehensive metering and alarms section on the LCD
display. All parameters and alarms are easily accessible from remote posts via the remote control input, which allows the user
to change from stand-by to “on air” in a fraction of a second. Upon request, an external controller can be provided for long-
range use of the device from an office or from other service points.
Compliance with the strictest regulations.
This device was designed in full compliance with CCIR, FFC, and other strict
international regulations, as well as the recent, strict EC anti-magnetic noise requirements. In addition, this device complies
with EC and ETSI 302.018-2 v 1.1.2.1 (2006-03) standards.
And that’s not all: Siel products provide greater value added and incomparable quality. For further details, refer to Chap. 3.
Please note
that the manufacturer, in its continuous attempt to further improve the quality this product, reserves the right to
change its technical features without prior notice.
,
Warning! Before initiating operations, it is essential to read this entire manual – with particular reference to Chap. 2 –
in order to avoid damage to objects or people.
