External Radio Control; Priority Timer; Master/Slave Operation Parameters - Vertex VXR-1000 Service Manual

CE-22 Program Software

18. External Radio Control

18-1: EXT.R Cntl
This command selects the manner in which
the VXR-1000 will control (and be controlled
by) the connected mobile radio.
On: Signals received by the mobile radio
will be re-transmitted to the portable
radio AND signals received from the
portable radio will be re-transmitted
by the mobile radio.
RX: Signals received by the mobile radio
will be re-transmitted to the portable
radio, but signals from the portable
radio WILL NOT be re-transmitted by
the mobile radio.
Off: Signals will not be re-transmitted by
the VXR-1000 or mobile radio in either
direction.
Press the Space bar to toggle this command
function to ON, RX, or OFF.

19. Priority Timer

19-1: Pri Timer (Priority Timer Polling Interval)
The function sets the interval which sepa-
rates the momentary polling (by the VXR-
1000) of the portable radio; the VXR-1000
will unkey its transmitter, listening for a
possible transmission from the portable, and
if a transmission is detected, the VXR-1000
will cease its transmission. The VXR-1000
will instantly key up the connected mobile
radio to transmit to the "base." Therefore,
this feature allows the portable radio user
to override an incoming transmission from
the "base," if desired.
The available settings are 0.25 second
through 3.00 seconds. A setting of "0.00" sec-
onds turns the interval timer off.
Use the Space bar or Backspace key to in-
crement or decrement this setting, respec-
tively.

20. Master/Slave Operation Parameters

20-1: Master Tone
When LkTn ("Lock Tone") is chosen as the
Master/Slave Mode, the user has the option
of using either 847.5 Hz or 832.5 Hz as the
Master Tone.
20
Press the Space bar to select the desired
Master Tone.
Note: If the Master/Slave Mode setting is not
set to LkTn, the Master Tone command will
not be available.
20-2: Master/Slave Mode
This command determines how the VXR-
1000 will behave when it is within the range
of other VXR-1000s operating on the same
frequency, such as when several mobile
units are at a common location. One (and
only one) VXR-1000 must act as the "Mas-
ter" to provide portable-to-base relay for all
portable units at the scene.
All other VXR-1000s that are present must
revert to a "Slaved" (inactive) status, so as
to avoid interference to each other.
Ordinarily, the first VXR-1000 arriving at a
location will establish itself as the "Master"
by periodically transmitting a Master Tone
signal. Any other VXR-1000 coming within
range will receive this tone (which is trans-
mitted on the same frequency as that used
by the portable for uplinking to the VXR-
1000); these VXR-1000s, upon receiving the
Master Tone, will switch themselves to the
"Slaved" status.
If the original Master leaves the location, the
first "Slave" VXR-1000 to detect the absence
of the Master Tone will then transmit its own
Master Tone. If not challenged by any oth-
er VXR-1000 within range, this Slave will
then become the new Master for this loca-
tion.
All of these transactions occur automatical-
ly, without interruption of voice communi-
cations occurring through the VXR-1000
system.
Use the Space bar to choose between the fol-
lowing selections:
YAESU: This is a Yaesu/Vertex exclusive
system, based on subaudible DCS
signalling.
LkTn: The Lock Tone system employs
audible tone bursts for signalling.