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Page 2-8
INSTALLATION INSTRUCTIONS, CONTINUED
INSTALLATION OF RY 15 RELAY INTERFACE UNIT, Continued
large, use a serles dropping resistor of about a thousand ohms per volt with a
shunt resistance across the data inputs of about two thousand ohms to divide the
sample down to the required voltage.
Sample voltages greater than about
a
couple
volts will be difficult to set.
If the voltage sample is too low
for a
good
reading, less than 1 volt for
a
reading of 1000, a DC amplifier may be required.
Attempt to increase the sample by other means if practical.
The data circuit is
floating, therefore the sample need not be referenced to ground, but may be several
hundred volts above or below ground potential.
Sample lines should be bypassed to
ground at their source with 0.001 mfd capacitors and conveyed to the remote control
1n shielded cables.
Ground both ends of the shielded cable directly to the frame
of the source and the ground terminal of the RY 15.
For each channel the input voltage to the transmitter unit from the RY 15
is
adjusted
with
a
ten-turn pot found adjacent to each channel.
The disptay on the
transmitter unit will blank if overrange;
the studio unit will show the numb
e
rs
111999/1
under"
the
overrange condition.
GATES TRANSMITTERS
Some Gates (Harris) Broadcast Transmitters are not equipped with all relays
necessary for remote control by modern systems.
Order relay assembly from
~arti
Electronic's Remote Control Equipment List that specifies use with Gates "H" and
"H3" series transmitters.
POTOMAC AM-l9 ANTENNA HONITOR
The
Relay Interface Units of "the RMC
15
System are full compatible with thc
popular AM-19 Antenna Monitor.
Each group of three channels can be isolated in the
programming mode for specific use with the Am-19.
Before attempting the interfacing of the remote control to any antenna monitor,
refer to the appropriate literature of that instrument specifically sectio: ls deal ing
with
"remote control" and "auxiliary connections".
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