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208143 REV -
Operations Manual, HPA3, Mini Compact Outdoor SSPA
Table 2-2: J4 Monitor & Control Port Pin-Outs
Pin # Signal
Type
Function
Notes
B
Mute Input
Closure to Ground Disables DC power to SSPA
Unit powers up muted. This line
must be pulled to ground (V or d)
to enable amplifier.
P
Auxiliary Input
Closure to Ground Auxiliary Fault Input
L
a
b
Summary Alarm Form C Relay
Closed on Fault
Common
Open on Fault
L-a: normally open
a-b: normally closed
N
Z
M
Auxiliary Alarm
Form C Relay
Closed on Fault
Common
Open on Fault
N-Z: normally open
Z-M: normally closed
G
Auxiliary Alarm
Open Collector
High on Fault
Requires external pull-up
W
10 Base-T Tx-
Refer to M&C Section
H
10 Base-T Rx+
Refer to M&C Section
J
10 Base-T Rx-
Refer to M&C Section
X
10 Base-T Tx+
Refer to M&C Section
S
Reserved
Make no connection
R
Reserved
Make no connection
A
Reserved
Make no connection
f
Reserved
Make no connection
D
RS232/RS485
Select
Closure to Ground
Selects Serial
Communication
Default is RS485; Pull to ground
(d) to enable RS232
E
RS485 TX- or
RS232 OUT
Serial TX Output
Serial Link Data Port
Refer to M&C Section
F
RS485 RX- or
RS232 IN
Serial RX Input
Serial Link Data Port
Refer to M&C Section
T
RS485 TX+
Serial TX Output
Serial Link Data Port
Refer to M&C Section
U
RS485 RX+
Serial RX Input
Serial Link Data Port
Refer to M&C Section
V
Chassis Ground Signal Ground
Common Signal Return
d
Isolated Ground Signal Ground
Isolated Comm Ground
Ground for Signals D, E & F
j
Interface
Select 0
Closure to Ground Select Baud Rate & Protocol Refer to M&C Section
e
Interface
Select 1
Closure to Ground Select Baud Rate & Protocol Refer to M&C Section
g
PGM Switch
Flash Firmware Port
Reserved for Programming
c
PGM CLK
Flash Firmware Port
Reserved for Programming
K
PGM-Sout
Flash Firmware Port
Reserved for Programming
Y
PGM-Sin
Flash Firmware Port
Reserved for Programming
h
PGM +5V
Flash Firmware Port
Reserved for Programming
C
PGM Enable
Flash Firmware Port
Reserved for Programming
