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TX-FM1/S/R/A Technical Manual www.txtechniques.co.uk
2. Safety Information
2.1 General Safety Information
Use of this device into a radiating antenna requires a valid Wireless and Telegraphy
licence.
Never operate this device without a suitable 50 ohm load connected to the RF
OUTPUT socket, or without a suitable antenna.
Use of this device as part of a transmission system, or combined transmission
system not specified by the manufacturer, may require further testing to ensure that it
remains compliant with the essential requirements and other relevant provisions of
Directive 19999/5/EC. Approval from a 'Notified Body' and clearance from the
Spectrum Management Authority may also be required.
Never allow audio, or audio peaks, in excess of +8dB enter the AUDIO IN LEFT
and/or AUDIO IN RIGHT input sockets, as this may lead to overmodulation of the
carrier. Always use an external audio limiter in cases where audio levels may exceed
+6dBu. FAILURE TO COMPLY MAY INVALIDATE ANY WARRANTIES OR
APPROVALS GIVEN TO THIS PRODUCT.
RISK OF FIRE! High power RF (Radio Frequency) energy could cause ignition of
combustible surfaces during fault conditions. Installation should be left to qualified
personnel. RF can cause severe burns to skin. Ensure antenna systems and feeder
cables are not situated near – or could fall onto – any combustible surface.
Installation must adhere to safety regulations and the requirements of the relevant
authorities. We recommend that at least two people are present during installation.
Keep a file containing installation instructions and plans, including details of the
transmission system (antennae, feeders, filters, etc) and operating instructions for all
equipment at the transmission site at all times. Display posters detailing first aid
treatment and treatment for electrical shock, along with telephone numbers for
contacting the emergency services in the event of personal injury.
BERYLLIUM OXIDE IS LETHAL. Some components inside this appliance contain the
highly dangerous TOXIC substance Beryllium Oxide. In case of damage contact the
manufacturer or its Agent immediately. Seek advice from the local authority when
discarding this appliance.
To reduce the risk of electrical shock, do not remove the cover, or any screws. NO
user serviceable parts inside; refer servicing to qualified personnel.
To reduce the risk of fire or electrical shock, do not expose this appliance to rain or
moisture.
To reduce the risk of fire, always replace fuses with the same type and rating.
Do not operate this appliance without a suitable 50 ohm dummy load or a suitable,
matched antenna connected to the RF OUTPUT socket on this apparatus. Although
the output devices used in this appliance are intended to be open and short circuit
tolerant, MIS-OPERATION MAY RESULT IN DAMAGE NOT COVERED BY ANY
WARRANTY.
The heatsink at the rear of this appliance may become very warm under normal
operating conditions.
Summary of Contents for TX FM1
Page 22: ...19 TX FM1 S R A Technical Manual www txtechniques co uk 8 Wiring Diagram REF FWD...
Page 23: ...9 Circuit Diagrams 9 1 FM1 EXCI...
Page 24: ...9 2 FM1 ALC Left Audio Channel...
Page 25: ...9 3 FM1 ALC Right Audio Channel...
Page 26: ...9 4 FM1 AP...
Page 27: ...9 5 FM1 RDS...
Page 28: ...9 6 FM1 PA...
Page 29: ...9 7 FM1 RF...
Page 30: ...9 8 FM1 LCD...