8. RF ADJ Use a suitable trimmer tool to adjust the RF output power
level, (RF FWD on the display). Never set to above the 50W maximum
rated output power.
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 loss of RF output .
Pin 3. RX failure alarm. TTL logic low during normal operation.
Floats high to indicate loss of parent station.
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. RX IN. ‘N’ Socket. Connect the receiving antenna to this input.
11. AC POWER. Connect a power lead with an IEC C13 connector (and
a 3 amp fuse in the plug or at the distribution panel) to this socket. Two
T2 amp (time delay) fuses are fitted within this connector’s Fuse carrier.
12. EARTH. Grounding connection point (M4 stud and bolt).
