TX Techniques TX FM1, Technical Manual

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TX-FM1/S/R/A Technical Manual www.txtechniques.co.uk
4. Installation
4.1 Connections
Connect a matched, pre-tested antenna system (which complies with the regulations
of the license) to the RF OUPUT socket on the rear of the unit.
Connect a ba4dB (max) audio feed to the AUDIO IN (LEFT) and AUDIO IN
(RIGHT) XLR sockets.
Connect the transmitter to a suitable power source using the supplied IEC connector
power lead. Ensure that the appliance is protected by a 13A fuse either at the supply
plug or at the distribution panel.
4.2 Switching On
Ensure a suitable load is connected to the RF OUPUT socket before connecting the
unit to mains power.
Upon power-up, the display will show the unit's firmware release number. After a few
seconds, it will prompt for the PIN to be entered (or may go straight to the “SELECT”
menu if the PIN function is not enabled).
Enter the correct PIN.
Please note: If an incorrect frequency (eg. Below 87.5MHz or above 108.0MHz) has
been selected on the internal frequency setting switches, the unit will not initialise.
Instead it will display "ALARM: SYSTEM ERROR" after a short while. Disconnect the
mains supply, select a valid frequency internally, and then power-up the unit once
again.
4.3 Settings
The following options can be accessed via the “SETTINGS” menu:
RF OUTPUT. Selecting ‘Disable’ on this menu function mutes the RF output, putting
the unit into a ‘hot standby’ mode.
MPX. Disabling this setting will defeat the MPX Encoder, resulting in a monophonic
signal being transmitted .
DTMF. Disabling this option prevents DTMF tones from activating the TA flag.
PIN. Disabling this option prevents the transmitter from requesting a PIN code, upon
power-up before output. Please note that if the PIN setting is set to ON, the RF
output will not resume following a power outage, without the intervention of an
operator (entering the PIN code), in order to protect the unit against theft. If continual
supply cannot be guaranteed and transmission is required to automatically re-
commence following a power outage, the PIN setting must be disabled (note that this
will not, however, afford any anti-theft protection).