P25 - SRM9022 RADIO – OPERATING INSTRUCTIONS
©
TMC Radio 2007
page 48
TNM-U-E-0055 Issue 2.1a
6. SPECIAL FUNCTION KEYS
Several function keys are simply short cuts to a menu screen. For further information on the
operation of these function keys, refer to the menu descriptions in section 4.
6.1 A
LARM
This button is used to put the radio into Emergency Mode.
Alarm is supported in Digital mode only.
Pressing the Alarm key send causes the radio to set the Emergency flag in the transmit voice
messaging and depending on radio configuration, optionally enter Transmit/Receive cycle
mode. In cycle mode, the radio will transmit live microphone audio at high gain for the
nominated duration and return to receive mode for the nominated duration.
This cycle will repeat indefinitely or until the radio is turned off and on again.
6.2 A
NNOUNCE
To send an Announce call on the channel, press this function key and then use the PTT to
send the call. The next PTT after the Announce will call the default group.
6.3 C
HANNEL
U
P AND
D
OWN
The current selected zone’s channel is decremented whenever the button is pressed.
The channel up and down functions is normally assigned to the Up/Down function keys.
They can be assigned to other keys if required.
If the current channel is the first channel, then the decremented channel will wrap around to
the last channel in the current zone.
The new channel can be an analogue or digital channel.
If pressed and held, the function auto repeats and updates the display for every 5
th
channel.
If the Talkaround function is enabled and selected, then Talkaround will be cancelled when
the channel is changed.
6.4 C
RYPTO
The function provides a shortcut to the Encryption select menu for user selection of the
current encryption key.
6.5 DTMF
S
END
1/2 (P25 A
NALOGUE
)
This function transmits a predefined DTMF sequence of up to 16 DTMF tones. There are
two DTMF send functions, DTMF1 and DTMF2.
Send DTMF is only supported in analogue mode and can be assigned to keys F1 to F6.
If an analogue channel is selected, and transmit is allowed then this activating this function
transmits a predefined DTMF sequence (up to 16 tones).
6.6 K
EY
L
OCK
The Keyboard Lock function is dedicated to the OK button. To use Key Lock, the function
has to be enabled in the FPP. To unlock the keys, the OK button must be held down for 2
seconds. The keys will then autolock again 10 seconds after no user activity.
Keys are locked in this mode with the exception of Emergency, PTT and any function key
that has been assigned Reset function.
