Instruction manual

22 Chapter 3 Operation
emergency is terminated and replaced with the Man Down cycle.
The Man Down cycle is terminated at the conclusion of the repeats;
upon receipt of an acknowledgment or by pressing <A><D>. Cycling
power also will terminate the cycle.
If the number of repeat transmissions is set to 1 (one), the
transmission will be considered non-critical. The radio display will
present ―Msg Sent‖ instead of ―Man-Down‖. The message type can
be changed to a unique value.
Emergency and Man Down Open Microphone Monitor
If this feature is enabled, when an emergency or Man Down is
activated, the radio will key up and transmit ambient noise for a
programmed period of time. It will then unkey and remain unkeyed
for a programmed amount of time and then repeat the process. It will
alternate between TX and RX throughout the cycle. The length of
the cycle is determined by the settings of ―Number of repeat
emergency (or man down) transmissions‖ and ―Time between
emergency (or man down) repeats‖. If the value is set to zero, there
will be no open microphone monitor.
Time-Out-Timer and Stuck-Microphone
The Time-Out-Timer feature terminates a transmission that is longer
than the programmed time. Available times are 30s, 60s, 90s, 120s.
[Default = 60s]. The radio will automatically unkey and a low
frequency (500 Hz) tone will be heard in the local speaker for four
seconds or until the radio is unkeyed. The value of the time-out-
timer is programmable in the radio personality programming.
To permit identification of the offending radio, prior to un-keying the
transmitter, the VMDE-200 will send the radio ID.
DTMF Operations
The VMDE-200 is capable of generating DTMF tones in three
modes.
Manual Keypad DTMF
DTMF tones are generated when keypad buttons are pressed with
the radio keyed. The DTMF tone continues to be transmitted until the
button is released. The radio microphone is muted for the duration
of the button press. This feature can also be used on channels that
use GE Star or MDC-1200 ANI signaling. Enabling this feature and
not designating ANI type (or designating the channel as a non-
signaling channel) for the channel will permit manual DTMF
generation without PTT ANI.
DTMF Keypad auto transmit
If enabled, the radio will automatically go into transmit and DTMF will
be generated when keypad buttons are pressed. ANI will not be
generated for any automatic transmit session. After a button is
released, the radio will remain keyed for one second to await further
button presses. The length of the transmitted DTMF tone is the value
programmed as ―DTMF character duration‖. The radio microphone is
muted for the duration of the function. If PTT ANI is enabled, the ANI
will be generated as programmed (beginning send or end send) for
radio PTT button presses.