Instruction manual

Chapter 3 Operation 21
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 ―Emrgency‖. The message type can
be changed to a unique value.
Man Down Capabilities
The VMDE-200 board contains wire feed-throughs for attaching
wires to permit the connection of a man down sensing switch. The
man down input terminals on the VMDE-200 are feed-throughs T1
and T2 where T1 is the high side and T2 is ground. T1 must not be
attached to any point that exceeds 3.6 VDC or microprocessor
damage will result.
The Man-Down message transmission is generally initiated by
closure of a mercury switch located within a hand-held radio when
the radio is continuously tipped greater than 60 degrees from
vertical. There are two programmable timers associated with the
man down feature.
Man Down Warning Delay
The man down warning delay is programmable 0 to 255 seconds.
Once the VMDE-200 senses a man down situation, this timer begins
to run. If the radio is not uprighted within this period of time, a
warning tone lasting 1 second is sounded. If the radio is uprighted,
the warning timer resets.
Man Down Activation Delay
If the warning delay timer succeeds to complete its countdown and
the warning tone is sounded, the activation delay timer begins to run.
The activation delay timer is programmable 0 to 255 seconds. If the
radio is not uprighted within this period of time, the radio will key up
and send a message to the base.
In GE Star® the man down message ID can be programmed to be
different than the radio PTT ANI. If the ID’s are different and a man
down message is sent, the VMDE-200 will expect an
acknowledgment to the man down ID not the PTT ID.
In GE Star® and DTMF, this message can be unique and
distinguishable from a general emergency message. In MDC-
1200®, an emergency message will be sent.
The man down message transmission will be repeated a
programmed number of times with a programmed period between
transmissions. The repeats will be transmitted regardless of radio
status. Available times are as follows:
Number of repeat man down transmissions. (1, 5, 10, 15, 20,
forever) [Default = 5]. Time between man down repeats. (5s, 10, 20,
30s) [Default=10s].
In conjunction with a properly configured radio personality, the radio
will change channels prior to sending the man down message.
Due to the nature of the Man Down critical message, it takes
precedence over an Emergency message. This means that if a
radio is in the emergency cycle when a Man Down occurs, the