Midian Electronics TRC-2, Manual

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9
CONTROLS & INDICATORS
Power/Volume Switch: On the right side of the TRC, there is a switch which acts as the power and volume
switch. The switch is in the power off position when turned fully clockwise past the click. Turning the switch
counter-clockwise past the click turns the power on to the volume control. At this point the volume is in the low
position. Turning the switch further counter-clockwise increases the volume.
LED 1 (PWR - LINE/SUP): This LED is a bi-color LED. The LED will glow red when the power is on to the TRC. It
glows orange when Line 2/Supervisor mode is active.
LED 2 (SEND - F1/F2): This LED is a tri-color LED. The LED will glow red during transmit of Freq 1 and orange
during transmit of Freq 2. It glows green when Guard Tone is detected from a parallel tone remote.
FREQ: The FREQ button acts as the frequency select key. Pressing this key once will give a single beep to
indicate F1. Pressing this key again will give a double beep to indicate F2.
INTER: Pressing the INTER key will allow intercom communications between several connected tone remotes
without transmitting over the radio. When the INTER key is pressed and held, the audio is routed on the line
without the Guard Tone activating the transmitter. Other tone remotes on the same line will hear the audio
automatically. No cross mute is available in intercom mode since there is no Guard Tone present.
MONITOR: Pressing the MONITOR key will allow the user to monitor the channel before pressing the SEND key
to make a call. If a conversation is heard then another co-channel user presently “owns” the channel and should
not be interrupted.
SEND: Pressing SEND will transmit the high-level guard tone for 120 msec, followed by the frequency tone for 40
msec, followed by the low-level guard tone that keys the radio with the voice and dialing riding over the low-level
continuous tone.
Optional 0-9, *, # Keys: These keys are used to dial DTMF. Press the desired buttons followed by the SEND key
transmits the DTMF.
1
ABC
2
DEF
3
GHI
4
JKL
5
MNO
6
PQRS
7
TUV
8
WXYZ
9
MENU
*
OPER
0
CLR
#
FREQ INTER
MONITOR
SEND
PWR - LINE/SUP SEND - F1/F2