Owner`s manual

OPERATING THE RADIO
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Ritron RCCR Clean Cab User Manual 9
Ritron, Inc. (800)-USA-1-USA [e-mail]
Volume
▼VOL▲
The VOL button is a toggle switch used to incrementally increase
or decrease the front-panel speaker volume. Pressing the right
side of the VOL button will increase speaker volume while
pressing the left side will decrease volume. As the volume is
changed the display will indicate the volume level and a tone will
be heard. Volume can be set to a value between 1 and 20. The
volume level can be adjusted by pressing the VOL button for each
increment, or by holding the VOL button down to automatically
increment.
T/D HOME
TX RX
TX RX
Volume Display
• When pressing the VOL button, any “―T/D―” or “―HOME―” indications on the display will
be momentarily replaced by the Volume Level and will reappear when the VOL button is
released.
• The RCCR PC programmer can be used to set a minimum allowable volume. For example, if
the radio is set for a minimum volume of 3 the VOL button will never be able to lower the
volume below level 3.
• The VOL button does not change the handset speaker audio. Handset volume is at a fixed
level that can be set using the RCCR PC programmer.
• The RCCR PC programmer can set the AUX volume to a fixed level, or allow it to be adjusted
by the VOL button.
PTT (Push-to-Talk)
P
T
T
The PTT button is pressed to transmit voice message from the front-panel microphone. The red “TX”
lamp in the center of the display will illuminate whenever the PTT button is pressed to indicate that the
transmitter is active. The radio will transmit on the channel indicated in the “―TX―” area on the
lower left side of the display.
It is important to monitor the channel before transmitting to avoid interference with other radio users. If
the “―TX―” and “―RX―” are set to the same channel and you hear a received voice signal in the
front-panel speaker, you should wait for the received signal to go away before pressing the PTT
button. The yellow “RX” busy lamp in the center of the display is another indication that a signal is
received.
Brightness Control
Display brightness is automatically adjusted depending on the ambient light in the locomotive cab,
dimming in low light and increasing intensity in high light. The keypad is automatically backlit in low
light conditions.