Other Inputs and Outputs:
Power Input: +12 volt power is supplied to the RVS-8 through J1. The actual voltage can be b11 and
+15 and should be regulated. Total current consumption is less than 300 mA. If voltage drops below 11 volts,
the voter will still function, but the relay may not energize.
Audio / COR Output: J2 provides the audio and COR output. The audio output also has a separate ground
connection. The output adjustment for audio on J2 is provided by R125.
The COR output is supplied through relay K1 and J2. The relay can handle up to 5 amps at 250 volts.
The mechanical service life of the relay is 10 million operations (about 2500 operations per day for 10
years). The relay is a single pole, double throw type that can be configured for a normally open or normally
closed configuration. All switch contacts are floating with respect to the PC board (not tied to +12 or ground)
to allow for use with other than 12 volt systems.
User Interface: The User Interface (J7) provides connections to the front panel LEDs and pushbutton switches.
Refer to the diagrams near the end of the manual for specific pin connections.
Output Selection: The Output Selection header (J6) provides the user with an output that follows which site is
currently selected. The output pin (1 through 8) for the corresponding voted channel (1 through 8) goes to
+12 volts. All other channels will float to zero volts.
The software provides a special counting function that keeps track of the voted sites during a COR cycle.
Just before the COR cycle ends (about 1 mSec) the output selection will switch to the site that was voted most
during the cycle. This provides the user an opportunity to connect the output selection header to a controller
that will sense the selected site and take action (possibly change the tail beep or make a voice announcement).
Without this sensing software, the voter would constantly select the site with the longest tail squelch when the
COR cycle ends (not desireable).
The Selected / Continuous jumper JP1 changes the output to either continuously follow the voted
channel or only provide an output when a COR is active. In most cases, the jumper will be in the Continuous
position.
Pin 9 provides a ground and pin 10 pr12 through a 1K resistor. These signals are provided in
case the Output Selection or other back panel connections need to be tied high or low for the equipment it is
connected to. The +12 pin is limited to 10mA.
Installation and Alignment: After the unit is in its case and properly turns on, you can run some audio
through a few of the channels to see how it operates. The alignment is pretty much the same as described in the
QST article. A voltmeter (as a minimum) can be used, but you may want to use an audio signal generator and an
oscilloscope for the audio path checks.
While on the bench, set up each channel to match your COR and Disable Active State. Also set all controls
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