Hardware Reference; Power; Carrier Operated Switch - Arcom RC210 Hardware Manual

Power

The RC210 requires anywhere from +11.5 to +15 vdc at 60 ma. This voltage source should be clean, filtered DC. Power
connection is made through a Phoenix power connector and the mating plug is included with the RC210. There is no need to
worry about using a fuse, as the RC210 is protected by an on-board, self-resetting fuse. Once the overload condition is cleared,
the fuse will automatically reset.
Table 1 shows the connections.
Note: Pin 1 is closest to the DB25 I/O connector
There are two grounds provided to prevent digital noise from appearing on the audio channels - digital ground and analog
ground. It is important that these two grounds are kept separate and run directly to the negative (-) terminal of the power source
(BOTH GROUND CONNECTION MUST BE MADE). The battery backup pin may be used to insure the controller remains
powered during power outages. This will allow the RC210 to continue to function and the on-board real time clock will not lose
time. If this connection is made, the RC210 automatically and instantaneously switches power.

Carrier Operated Switch

The signal from the receiver which indicates that a signal is present is called COS. The RC210 can accommodate a COS signal
that presents either a logic high (5 to 15 volts dc) or a logic low (< .8 vdc) when a signal is present. Table 2 shows the settings of
the corresponding jumpers.
The RC210 presents a high impedance on its logic inputs (>10K ohms), you can choose a point in the receiver without concern
that the controller will "load it down". These specifications apply to all logic inputs used with the RC210.

Hardware Reference

Pin Number
1
2
3
4
Jumper Description
JP1 Port 1 CTCSS
JP2 Port 1 COS
JP3 Port 2 CTCSS
JP4 Port 2 COS
JP5 Port 3 CTCSS
JP6 Port 3 COS
Table 1
Description
+11.5 to 15 V DC @ 60 ma
Battery backup
Digital Gnd
Analog Gnd
Table 2
Pins 1 & 2
Active Low
Active Low
Active Low
Active Low
Active Low
Active Low
7
Pins 2 & 3
Active High
Active High
Active High
Active High
Active High
Active High