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26 205486 REV F Operations Manual, HPA2, Compact Outdoor SSPA
Table 3-1: Monitor & Control Connector, J4
Signal Type Function Pin Notes
Mute Input Closure to Ground Disables DC Power to SSPA B Unit Powers up Muted, This line must
be pulled to ground (V or d) to enable
amplifier
Auxiliary Input Closure to Ground Auxiliary Fault Input P
Summary Alarm Form C Relay Closed on Fault
Common
Open on Fault
L
a
b
L-a : normally open
a-b : normally closed
Auxiliary Alarm Form C Relay Closed on Fault
Common
Open on Fault
N
Z
M
N-Z : normally open
Z-M: normally closed
Open Collector High on Fault W Reserved
Auxiliary Alarm Open Collector High on Fault G Requires external pull-up
Voltage Alarm Open Collector High on Fault H Requires external pull-up
Current Alarm Open Collector High on Fault J Requires external pull-up
Temperature Alarm Open Collector High on Fault X Requires external pull-up
RF Power Detector Analog Output Relative Indication of RF Output
Power
R +4.0 vdc at Psat
Gain Adjust Input Analog Input Adjusts Amplifier Gain over 20dB
range
A 2.5 vdc = Max Gain 75dB
0.5 vdc = Min Gain 55dB
Block Up Converter
Alarm
Open Collector High on Fault f Requires external pull-up
RS232 / RS485
Select
Closure to Ground Selects Serial Communication D Default is RS 485; pull to ground (V)
to enable RS 232
RS 485 TX- or
RS232 OUT
Serial TX Output Serial Link Data Port E
RS 485 RX- or
RS232 IN
Serial RX Input Serial Link Data Port F 9600 default Baud Rate
RS 485 TX+ Serial TX Output Serial Link Data Port T
RS 485 RX+ Serial RX Input Serial Link Data Port U
GND Signal Ground Common Signal Return V, d
Baud Select 0 Closure to Gnd Select Baud Rate & Protocol j Refer to Appendix C
Baud Select 1 Closure to Gnd Select Baud Rate & Protocol e Refer to Appendix C
PGM Switch Flash Firmware Port g Reserved for Programming
PGM-Sout Flash Firmware Port K Reserved for Programming
PGM-Sin Flash Firmware Port Y Reserved for Programming
PGM +5V Flash Firmware Port h Reserved for Programming
PGM Enable Flash Firmware Port C Reserved for Programming
Spare Fault Open Collector High on Fault S Requires external pull-up
PGM CLK Flash Firmware Port c Reserved for Programming