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TA7982-0100-10-00 and RX6996-3408-44-XXB
TOWER TOP AMPLIFIER and
RECEIVER MULTICOUPLER / TTA CONTROLLER
INTRODUCTION
The RFI Tower Top Amplifier (TTA) together with the Receiver Multicoupler / TTA
Controller (RMC) provides a low noise, high intercept point receive system designed
to amplify and distribute signals from a single tower mounted antenna to multiple
receivers. Set-up of the system is possible using either a manual interface or via the
Ethernet interface using a PC. TTA and RMC power, fault and control status is given
by LEDs on the RMC front and rear panels and can also be remotely monitored via
the Ethernet interface. Different models cover several DC voltage ranges and AC
operation is provided via an external AC to DC adapter.
GENERAL
Operating Precautions
•
There is no On/Off switch on the units, they become active as soon as DC power
is connected or the AC plug pack is switched on at the AC outlet.
•
Do not operate the unit outside the specified operating temperature range.
•
Do not open the unit as there are no user serviceable parts inside. All faulty
equipment should be returned to the supplier for repair.
INSTALLATION
Mounting
TTA - The TTA is designed for tower top installation. Please refer to the TTA Quick
Start Guide included with the TTA for installation instructions.
RMC - The RMC must be mounted indoors only. It is designed to fit in a 1U rack
space and should be mounted clear of any equipment that generates excess heat.
Do not mount the unit inside small unventilated enclosures.
Cabling
•
Connect the antenna cable to the ANTENNA port on the TTA.
•
Connect the TTA MAIN output to the RMC RF Input with the main feeder cable.
This cable should have a maximum loss of 6 dB at 824 MHz.
•
Connect the TTA Test output to the RMC rear panel Test Port.
Earthing and Lightning Protection
Compliance with international electrical safety standards requires that the external
Protective Earthing point on the TTA and RMC, as indicated by this
symbol, be
permanently hardwired to the premises protective earth system using 1.5 mm
2
(14 AWG) minimum cross-sectional area conductor. These connections provide
protection from hazardous and transient voltages. It is essential to also install the
recommended lightning protectors on all interconnecting cables between the two
units.
