ARA-1 Operations Manual
2-8
INTEROPERABILITY NOW
NOTE:
An Audio Crossover Adapter, part number 0313 080515, is included with
the ARA-1. This DB-15 male to DB-15 female adapter allows the use of radio
cables developed specifically for the JPS ACU-1000 Intelligent Interconnect
system to be used with the ARA-1. It provides a crossover of transmit and receive
audio, as well as COR and PTT control signals. You only need this adapter if you
are planning to connect a radio to the ARA-1 using a JPS designed or
manufactured radio interface cable. The adapter makes the ARA-1 audio
connector pinout match the one found on the ACU-1000. If you are designing a
cable based on Table 2-2, or if you are connecting the ARA-1 directly to an ACU-
1000, then you do not need the Audio Crossover Adapter.
2.8.4
Network Connection (J3)
The ARA-1 is connected to the Ethernet network via rear panel connector J3 using a standard
RJ-45 Ethernet Patch Cable (non-crossover). A six-foot long cable is included with the unit.
2.8.5
Serial Port Connection (J4)
J4 is a standard RS-232 DCE serial port. It is a female DB-9 connector, and can be interfaced to
most PCs, typically standard DTE serial ports, using a DB-9 straight-through serial cable (not
included with the ARA-1).
NOTE:
This connector is used only during factory setup.
Table 2-3
J4 Serial Port Pinout
J4 pin
Description
2
TX data
3
RX data
5
Ground
End of Section 2