Futurecom P25 - Page 75

8M083X25 R14
APX Series P25 Interface
DVRS Installation & Programming Guide – PART II
January 2019
Page 75 of 153
Field Name
Range
Description
Notes
Engine Start
Alarm
OFF – 9
Volts
In most installations the DVR is
programmed to be in the OFF mode
upon power up. If not, the ‘Engine Start
Alarm’ field may be enabled to prevent
the DVR from transmitting when the
voltage drops below the programmed
threshold during engine start up.
This option may be useful only
in installations where the DVR
is programmed to power up in
System or Local mode. Since
the recommended DVR Power
up mode is OFF, this option is
not needed in most
installations. Default setting is
OFF.
MSU RF
Bypass
Switch
Enable /
Disable
check box
This field must be enabled on all in-
band DVR models equipped with an RF
Switch.
Relay 1 must be selected in the ‘Relay
Use’ field due to the Auxiliary Cable
wiring.
Applies to In-Band DVRS
Models Only. This option
enables the Switch connecting
the in-band filtering at the
output of the MSU.
Band Lock
Enable /
Disable
In some in-band application, the Band
Lock feature may need to be disabled
even though there is no In-Band filter
provided with the DVRS. The typical
application for Disabling the Band Lock
is a Fixed DVRS installation where all
the required isolation (min 70dB) is
provided by antenna separation and no
in-band filter is required.
If the ‘MSU RF Bypass
Switch’ option is enabled, this
field is ignored.
If the ‘MSU RF Bypass
Switch’ option is disabled, this
field determines the MSU
behavior if the MSU and DVR
operate in the same frequency
band.
External
Master Light
Enable /
Disable
check box
This field needs to be enabled on DVR
models using an external light which is
lit when a DVR is a Primary or
Permanent Primary.
Relay 2 must be selected in the ‘Relay
Use’ field due to the Auxiliary Cable
wiring.
This option requires external
switching logic and hardware
(provided by installer).
Relay Use
‘Not Used’
‘MSU RF
Bypass SW’
‘Duplexer
Bypass SW’
‘Master
Light’
‘LOC Mode
Light’
‘SYS Mode
Light’
‘DVR ON
light’
‘External
Alarm’
Relay 1 must be assigned to the RF
Switch OR the Duplexer Bypass Switch
if the corresponding option is installed.
Relay 2 must be assigned to the Master
Light if this option is installed.
The MSU RF Switch option is included
with all side-by-side and Transportable
in-band models.
All Lights, Alarm relays and
associated external logic are to
be provided by installer.
AFC
Cumulative
Enable
Disable
Enables or Disables the Cumulative
Automated Frequency Control (AFC)
tuning.
Default setting is Enable. Set to
Disable during calibration.
AFC Fast
Enable
Disable
Enables or Disables the Fast AFC
tuning.
Default setting is Enable. Set to
Disable during calibration.