Crown Broadcast FM 20/100 W, user manual– 05/2013
Page 13
Crown Broadcast, a division of International Radio & Electronics Corporation 25166 Leer Drive, Elkhart, Indiana, 46514-5425 USA
Ph +1 (574) 262 8900
2.3.5. 2U
Rack
The choice of stainless steel as material guarantees against corrosion. The rack structure and the structure
of the monoblock front panel reinforce the device. The rectangular outline of the front panel has an LCD
display. The transport handles are mechanically interchangeable and can be removed. The cover is fixed by
a set of M3 POZIDRIV screws and can be easily removed. The user has access to every module to set the
parameters of the device.
2.4.
Protecting the transmitter
To ensure the transmitter will work with no risk of damage, a series of protections has been set.
2.4.1. Surge
Protector
An optional surge protector module can be added to the chassis. The goal of this module is to limit the surge
caused by lightning. It works after the main protector usually located in the electrical board and before the
power supply protector thus offering an optimal level of protection. The protector principle is to capture the
surge and divert it to the ground so as to protect the transmitter and its power supplies.
The surge protector used by Crown Broadcast includes multi-MOV technology and a gas discharge tube
(GDT) giving a very high protection and very low parasitic capacitance and leakage currents.
Please refer to Appendix B ‘Maintenance’ for the procedure to replace the surge protection module.
G1
D1
AES1
G2
D2
AES2
MPX
SCA
Audio 1
Audio 2
Internal player
19 kHz output
