Remote Control Outputs; Expanded Remote Control Outputs - ACC RC-96 Owner's Manual

Remote Control
.Outputs
Expanded Remote
Control Outputs
Chapter Eight: Interfacing
to
Other Equipment
RIC connector, pins 3, 4 and 5
Also at LINK connector, pins 3 and 5
The RC-96 controller provides three open collector high voltage,
high current remote control logic output functions which can be
controlled by Touch-Tone commands. The remote control logic
outputs can be used for such functions as high/low power select,
antenna select, or control of other equipment at the repeater site.
The three outputs are commanded with the User Function user
· commands and may be forced on or off, and may be interrogated.
When any output is interrogated, a short (2ms) pulse is generated
on that output - that is, the output toggles to the opposite state
and back. The pulse is ·too short to disturb equipment being
controlled, but long enough to trigger a one-shot or 555 timer to
stretch to any duration required.
Two logic outputs'may:.have-:dedicated'functions when certain
options are selected. If commanded to the "Phone Line Shared"
mode with a Programming command, Control Output 3 (UF 3)
becomes an active low Phone Line In-Use output, which may be
or-tied with other controllers at. the site to indicate that another
controller is currently using the phone line. See "Sharing the
Phone Line" later in this chapter.
An external cartridge tape player may be interfaced to the con­
troller to play ID, tail, or Bulletin Board messages. The activa­
tion of these messages when loaded properly with the Message
Editor can cause a one second pulse to be generated at Control
Output 2 (UF 2) to start the external device. The controller then
monitors the External Device Busy logic input for indication of
completion of the recorded message. See "External Tape Player"
later in this chapter for details.
RIC connector, pins 3,4 and 5
Also at LINK connector, pins 3 and 5
An alternative mode (DIP switch selectable) uses the outputs to
serially shift out eight remote control logic functions plus remote
base frequency information (see next section) - a total of 24 bits.
· The eight remote control output functions permit more extensive
· remote control of equipment at the· site at the expense of several
external IC's required to capture the data. The FC-! Frequency
Control Board is available from ACC for this purpose as is the
FC-900 Interface.
In the expanded mode, the User Function outputs
app~ar
at the
shift register outputs, just as they appeared directly at the control
outputs in the direct mode. The logic sense of the UF outputs
RC-96 REPEATER CONTROLLER OWNER'S MANUAL· 75