User's Manual

2. Interface Description
The HPA4 has 2 external RF ports; both are type "N" female coaxial connectors:
J1 is the RF input port
J2 is the RF output port
DC power connection to the HPA4 is accomplished via J3, a 2-conductor, quick-
disconnect connector. J4 is a control / alarm cable which carries the amplifier's key
signal and high-temp alarm signal.
DC POWER
INTERFACE
J3
J4
RF OUT
J2
COOLING
J1
RF IN
CONTROL
FAN