Paradise 205486 REV F - Manual (Page 29)

Operations Manual, HPA2, Compact Outdoor SSPA 208495 REV C 29
3.0.3 Compact Outdoor SSPAs in Legacy Systems
The isolated return for RS-232/RS-485 systems that exists on Compact Outdoor SSPAs with
serial numbers 300,000 and above will require an additional connection on J4 when used in
systems that have Monitor and Control cables designed to be used with units with serial
numbers < 300,000.
Figure 3-6 shows the required connection between the chassis ground and the isolated
ground (pin V to pin d).
If it is not possible to modify the existing cable harness or otherwise externally connect the
chassis ground Pin V to the isolated return at Pin d as shown in Figure 3-6, consult the
factory for other options.
Figure 3-5: J4 Connections for RS-232 Communications for Serial Numbers <300,000
Chassis Ground
TX Enable
RS232/RS485 Select
Baud Select 0
Baud Select 1
Chassis Ground
RS232 (RX)
RS232 (TX)
9600 BAUD Selection shown
V
B
D
j
e
d
F
E
J4
Figure 3-6: J4 Connections for RS-485 Communications for Compact Outdoor SSPAs
of Serial Numbers >300,000 in systems with M&C cables designed for
Compact Outdoor SSPAs of Serial Numbers <300,000
Chassis Ground
TX Enable
RS232/RS485 Select
Baud Select 0
Baud Select 1
Isolated Return for RS232/RS485
RS485 (RX-) RS232 (RX)
RS485 (TX-) RS232 (TX)
RS485 (TX+)
RS485 (RX+)
9600 BAUD Selection shown
V
B
D
j
e
d
F
E
T
U
J4