Futurecom P25 - Page 68

8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide – PART II
January 2019
Page 68 of 153
Field Name
Options
/ Units
Description
Notes
Rx RSSI Th
-60 to -
110dBm
The DVRs exchange
Primary/Secondary messages on
their Rx frequency while idle.
Before a Primary DVR sends out a
Primary Heart Beat (HB), it checks
for RF activity and HB exceeding
the programmed ‘Rx RSSI Th’ on
the Rx frequency. If the Primary
DVR does not detect any RF
activity or HB exceeding the ‘Rx
RSSI Th’, it will proceed with
sending a Primary HB. If it detects
HB exceeding the programmed ‘RX
RSSI Th’, the Primary DVR backs
off and becomes non-Primary, on
stand-by. If a HB is detected but its
level is below the programmed ‘Rx
RSSI Th’ the DVR will stay a
Primary and send its HB. If it
detects RF activity on the Rx
frequency, the Primary DVR will
postpone the sending of its HB until
the Rx frequency is clear to ensure
the HB can be successfully (without
interference) received by the other
DVRS.
Refer to the Primary /Secondary
Operation Paragraph for more
details.
Bandwidth
Set 1
Set 2
Selects the Adjacent channel
spacing (12.5kHz or 25KHz) as
programmed in the ‘Frequency
Band Setup’ menu.
See ‘Frequency Band Setup’
Screen.
Steering
Yes
No
Enables (‘Yes’) or Disables (‘No’)
portable initiated steering of the
MSU mode (zone/channel). Based
on the PL/DPL programmed in the
PSU and received by the DVR. The
DVR steers the MSU to the
zone/channel that is associated
with a specific Rx PL/DPL
programmed in the DVR Steering
Table.
Applicable to Analog DVR Modes
only.
Steering Table
screen
Opens a steering Table that
enables the user to program up to
14 different mobile modes per DVR
channel and the corresponding Rx
PL/DPL codes that are used as
steering triggers. When the DVR
receives a LPSU transmission with
the programmed PL/DPL, it will
steer the MSU to the corresponding
MSU mode.
Applicable to Analog DVR Modes
only.