9. REMOTE 9-pin D-sub Female. Remote control and monitor inputs
and outputs are available on this connector:
Pin 1. Reflected Power Alarm. TTL logic low during normal
operation. Floats high to indicate a high level of reflected power
(critical antenna mis-match) has been detected.
Pin 2. Forward Power alarm. TTL logic low during normal
operation. Floats high to indicate RF output has failed
Pin 4. Temperature alarm. TTL logic low during normal
operation. Floats high to indicate over-temperature condition
has occurred.
Pin 9. RF Mute Control. Supplying between 5 and 12V this pin to
(with reference to chassis ground potential) will mute the RF
output. Primarily used in automated changeover systems.
Pin 6, 7, 8 GND connection, at chassis earth potential.
The above ‘Open Collector’ outputs are capable of operation up to 50V
and sinking a current of 75mA maximum. The normally high, (ie. ‘pull
low’ upon alarm condition) provides inherent ‘power failure’ or ‘cable
connection failure’ signalling.
10. MPX IN. If using an external processor and RDS encoder, or a
baseband MPX Studio-Transmitter Link, connect to this BNC. Adjust the
output level of the external equipment to provide the correct
modulation level (requires test equipment).
11. POWER. Connect a power lead with an IEC C13 connector (and a 5
amp fuse in the plug or at the distribution panel) to this socket. Two T4
amp (time delay) fuses are fitted within this connector’s Fuse carrier.
12 EARTH. Grounding connection point (M4 stud and bolt).
Connect a suitable rated test load to the RF OUPUT socket before
connecting the unit to mains power. IMPORTANT! FAILURE TO DO SO
MAY RESULT IN DAMAGE NOT COVERED BY WARRANTY.
Installation
