4
RF INPUT
Connects to the TTA via the main feeder cable and carries the RF signal, DC power
and the communications channel between the RMC and TTA.
RF OUTPUTS 1 to 8
Eight equal level RF outputs are available from the RMC. Best performance will be
achieved if 50 ohm terminations are fitted to any unused RF outputs however, due
to the high isolation between outputs, the performance degradation is minimal if
unused RF outputs are left unterminated.
EXPANSION PORT
This port is provided to connect to an optional Expansion Multicoupler. If the
Expansion Port is not used it is important to terminate it by selecting the appropriate
setting of the CONFIG switch. (See CONFIG Switch)
Rotary Switches
Four switches are provided:
CONFIGURATION, DISTRIBUTION GAIN ATTENUATOR
and
INPUT GAIN ATTENUATOR
tens and units. See
SYSTEM SET-UP
for instructions on
how to adjust these switches.
ALARM Connections
A three way locking Phoenix plug is provided to connect the alarm relay to an
external alarm. The contacts labelled “NC” and “COM” are closed when the RMC
has power applied and there are no faults.
POWER
A two way locking Phoenix plug is provided to connect an external DC source
capable of supplying the required voltage and current. The required voltage is shown
on the rear panel label next to the power socket and the power consumption for the
system is 32 W. e.g a 12V system will draw around 2.5 A. The DC power input is
reverse polarity protected. A green LED above the power socket indicates when
power is present.
AC Power
The optional AC to DC power supply provides 12 VDC to power a 12 V RMC and is
supplied fitted with a two way locking Phoenix plug. The power supply should be
mounted safely in a convenient location and clear of any equipment or obstructions
which may cause it to overheat.
RESET Switch
To reset the RMC back to factory default values, including the IP address and
passwords: Remove the DC power and while pressing the reset button, re-apply
the power and hold the button in for about 10 seconds until the power LED starts to
flash.
To only reset the RF configuration values: When the RMC is powered, press and
hold the reset button in for about 10 seconds until the power LED starts to flash.
