Operations Manual

Page 4 RF Technology PA50
3 TEST POINTS
3 Test Points
These test points are provided on the PCB and the DB9 front panel connector for use by
maintenance personnel
TP100 and TP101 Driver drain current measurement. A multimeter placed across
these pins will indicate 1 volt for 1 amp of Q102 drain current
TP102 and TP103 O/P stage drain current measurement. A multimeter placed across
these pins will indicate 1 volt for 10 amps of Q100 and Q101
drain current
TP200 PA Temperature reading. 1 volt indicates a temperature of 40
degrees. This reading deviates by 10mV per degree of change
TP203 Reverse voltage output from the reflectometer
TP204 Forward voltage output from the reflectometer
DB9 pin 1 GND
DB9 pin 2 O/P drain current
DB9 pin 3
DB9 pin 4 Reverse voltage
DB9 pin 5 +28V
DB9 pin 6 Driver drain current
DB9 pin 7
DB9 pin 8 Forward voltage
DB9 pin 9
4 I/O Connections
There are 3 I/O connectors on the rear panel with the following functions
25 pin connector DC power and exciter logic interface
Pin 1,2,3,4,14,15,16,17 GND
Pin 10,11,12,13,22,23,24,15 +28V
Pin 7 DATA-IO
Pin 19 CLK
Pin 20 CS
Pin 18 VREFB
Pin 6 Forward Volts
Pin 8 Reverse Volts
Pin 9 Temperature
BNC Connector: RF Input from exciter, approximately1 Watt
N Connector: RF Output to antenna, up to 150 Watts