11
OPERATION
The TRC-1000 has 3 operating modes:
Control Mode:
This is the normal operating mode. It allows for remote control of a base station equipped with a
tone remote adaptor such as Midian’s TTC-1.
Call Mode:
This mode is for encoding DTMF, 5-Tone, 2-Tone or Pulse Tone.
Menu Mode:
This mode is for configuring the TRC programmable features.
Control Mode:
In Control Mode the LCD displays the time on the first line. On the second line the selected frequency is displayed
along with the programmed alias for that channel. If using with other Midian TRC’s (revision G and higher), the
paralleled remotes will also show the channel change on the display.
Frequency versus Function:
The F1-F17 tones are referred to, industry wide, as Function Tones, but are used
as frequency selector tones to control the base station radio channel selection. Midian, with it’s TTC-1 tone
remote adaptor can use the Function Tones for either frequency selection or for controlling a function for remote
monitoring and control. These functions can be used for turning on/off a scrambler in the TTC-1, controlling voice
prompts from the TTC-1, or providing outputs from the TTC-1 to the TTC Option A (wild card module) for remotely
controlling equipment. If using the TRC with the LCD Option (TRC Option I) the TRC will display the Frequency
and the Function. For example, Frequency 1 can be selected while controlling Function 5 and the display will
show “Freq: 01 Func: 05”. A frequency and function should not share the same Function Tone. For example, if
only channel 1 and 2 at the base station need to be controlled (F1-F2), this leaves F3-F17 for use as function
control. If 16 channels need to be controlled at the base station (F1-F16), this leaves F17 for use as function
control.
Frequency Selection:
To change the channel of the radio (F1 up to F16), press the FREQ button followed by a
single digit number for F1-F9 or a double digit number for F01-F16. When the Function Tone is selected, the TRC
sends the High-Level Guard Tone followed by the selected Function Tone to the tone remote adaptor to change
the channel of the radio. If using with other Midian TRC’s (revision G and higher), the paralleled remotes will also
show the channel change on the display.
Function Selection:
To control a function press the FREQ button followed by a single digit number for F1-F9 or a
double digit number for F10-F16. When the Function Tone is selected, the TRC sends the High-Level Guard Tone
followed by the selected Function Tone to the TTC-1 to command the function control.
Note:
The selection of a
function does not cancel any frequency selection. If the TRC is on Frequency 1 and Function 5 is selected, the
tone remote adaptor will remain on Frequency 1.
Transmitting:
After selecting the desired Function Tone for frequency selection, pressing and holding the SEND
key will generate the High-Level Guard Tone followed by the continuous Low-Level Guard Tone. The user speaks
into the microphone of the TRC and the voice goes out over the Low-Level Guard Tone.
Monitor:
Prior to transmitting or dialing, the user should Monitor the channel to see if there is activity on the
channel. If there is activity, the user should wait until the channel is clear. Pressing the MONITOR button sends
the High-Level Guard Tone followed by the Monitor Function Tone to the tone remote adaptor giving it a
command to open the squelch of the radio. Depending on the tone remote adaptor this can be momentary or
latched. If momentary, the tone remote adaptor will close the squelch of the radio after a set amount of time. If
latched, the squelch will remain open until the tone remote adaptor receives a second Monitor command from the
TRC.
12:00
Freq: 01 Fire 1
